From patchwork Thu Jan 2 22:06:14 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234770 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0EA96C3276C for ; Thu, 2 Jan 2020 22:19:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CF8622464E for ; Thu, 2 Jan 2020 22:19:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003557; bh=3LLXqVPAbNNSxxYw6vlTk3Pi34z2P5dGy620IRkNt7Y=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=J1XYjjXmasL4OU01RA9bJ7CByn/zd086hW9WQ5/4pL4ZkrachWdfYRuXMS8lX82LA DJ4R47g4vXKQtfc+FTRm7JCLUfNCEHC+wQV+tJ//HBWHQitVudqTTVgcw1o6UFHoUm BqrMFgA7C37FQWNipA4Xd9cGNjCxMKqIYfIitfxc= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728557AbgABWTQ (ORCPT ); Thu, 2 Jan 2020 17:19:16 -0500 Received: from mail.kernel.org ([198.145.29.99]:35190 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728547AbgABWTN (ORCPT ); Thu, 2 Jan 2020 17:19:13 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 89B3E24125; Thu, 2 Jan 2020 22:19:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003553; bh=3LLXqVPAbNNSxxYw6vlTk3Pi34z2P5dGy620IRkNt7Y=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hGVDIkfE8Bh4pkTqPk2hSvLvQ2AkirTtz1MaN4GIlSvIPx7z7Ql85BSyOjjB1yd4f mF5uEb7O5G0Ik2eVhubwL6x16Z9XJwtKoyHy0+IdhVQFKyzUBuWuyF0kqGa0rowQaR s41Y/9OoFiLdgPKvzv44JzGWYCXRyWSOlabObpog= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Sreekanth Reddy , "Martin K. Petersen" , Sasha Levin Subject: [PATCH 4.19 002/114] scsi: mpt3sas: Fix clear pending bit in ioctl status Date: Thu, 2 Jan 2020 23:06:14 +0100 Message-Id: <20200102220029.416969030@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Sreekanth Reddy [ Upstream commit 782b281883caf70289ba6a186af29441a117d23e ] When user issues diag register command from application with required size, and if driver unable to allocate the memory, then it will fail the register command. While failing the register command, driver is not currently clearing MPT3_CMD_PENDING bit in ctl_cmds.status variable which was set before trying to allocate the memory. As this bit is set, subsequent register command will be failed with BUSY status even when user wants to register the trace buffer will less memory. Clear MPT3_CMD_PENDING bit in ctl_cmds.status before returning the diag register command with no memory status. Link: https://lore.kernel.org/r/1568379890-18347-4-git-send-email-sreekanth.reddy@broadcom.com Signed-off-by: Sreekanth Reddy Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/mpt3sas/mpt3sas_ctl.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/mpt3sas/mpt3sas_ctl.c b/drivers/scsi/mpt3sas/mpt3sas_ctl.c index 5e8c059ce2c9..07345016fd9c 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_ctl.c +++ b/drivers/scsi/mpt3sas/mpt3sas_ctl.c @@ -1597,7 +1597,8 @@ _ctl_diag_register_2(struct MPT3SAS_ADAPTER *ioc, " for diag buffers, requested size(%d)\n", ioc->name, __func__, request_data_sz); mpt3sas_base_free_smid(ioc, smid); - return -ENOMEM; + rc = -ENOMEM; + goto out; } ioc->diag_buffer[buffer_type] = request_data; ioc->diag_buffer_sz[buffer_type] = request_data_sz; From patchwork Thu Jan 2 22:06:15 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234519 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 53E59C3276C for ; Thu, 2 Jan 2020 22:55:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2A54920848 for ; Thu, 2 Jan 2020 22:55:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578005740; bh=74cpfdnC7BOd4P/CKjKU2kcevS4tDVGdeld1VI1x+cE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=WUnIAiVvwQIx4F5gEYnOHq771+t8o6WVyBR5eUI0492jgc+6g7L/VRG9hCwJekeBy WoKPqe4LIyiqgia7ITyDuwtKr3cNAgFg4GIxkY0FPPtrZyZa7W5euxnrwSgYbffMq+ fXRqUE/T+NoVPUjxfknKhDCU/3UJtuqn737Lx2vg= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727811AbgABWze (ORCPT ); Thu, 2 Jan 2020 17:55:34 -0500 Received: from mail.kernel.org ([198.145.29.99]:35280 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727984AbgABWTQ (ORCPT ); Thu, 2 Jan 2020 17:19:16 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E9A4721582; Thu, 2 Jan 2020 22:19:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003555; bh=74cpfdnC7BOd4P/CKjKU2kcevS4tDVGdeld1VI1x+cE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QqykDcEs6Mr4mK4M2SR0ggwkISc2memowZxkFsFdxiKiESECNrdTdINbOVLW6lZ1r f4/A3GLUd14r2bUT2Y8W70Kc8Wuke3XYZph+VE0J9ALh+ctkr97AiVwLV51lu0HMou XbW/bgG1gSl9S+79G8/elAkrK0/6aHQaluTQudZ4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Dick Kennedy , James Smart , "Martin K. Petersen" , Sasha Levin Subject: [PATCH 4.19 003/114] scsi: lpfc: Fix locking on mailbox command completion Date: Thu, 2 Jan 2020 23:06:15 +0100 Message-Id: <20200102220029.510009370@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: James Smart [ Upstream commit 07b8582430370097238b589f4e24da7613ca6dd3 ] Symptoms were seen of the driver not having valid data for mailbox commands. After debugging, the following sequence was found: The driver maintains a port-wide pointer of the mailbox command that is currently in execution. Once finished, the port-wide pointer is cleared (done in lpfc_sli4_mq_release()). The next mailbox command issued will set the next pointer and so on. The mailbox response data is only copied if there is a valid port-wide pointer. In the failing case, it was seen that a new mailbox command was being attempted in parallel with the completion. The parallel path was seeing the mailbox no long in use (flag check under lock) and thus set the port pointer. The completion path had cleared the active flag under lock, but had not touched the port pointer. The port pointer is cleared after the lock is released. In this case, the completion path cleared the just-set value by the parallel path. Fix by making the calls that clear mbox state/port pointer while under lock. Also slightly cleaned up the error path. Link: https://lore.kernel.org/r/20190922035906.10977-8-jsmart2021@gmail.com Signed-off-by: Dick Kennedy Signed-off-by: James Smart Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/lpfc/lpfc_sli.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index f459fd62e493..bd555f886d27 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -12928,13 +12928,19 @@ send_current_mbox: phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; /* Setting active mailbox pointer need to be in sync to flag clear */ phba->sli.mbox_active = NULL; + if (bf_get(lpfc_trailer_consumed, mcqe)) + lpfc_sli4_mq_release(phba->sli4_hba.mbx_wq); spin_unlock_irqrestore(&phba->hbalock, iflags); /* Wake up worker thread to post the next pending mailbox command */ lpfc_worker_wake_up(phba); + return workposted; + out_no_mqe_complete: + spin_lock_irqsave(&phba->hbalock, iflags); if (bf_get(lpfc_trailer_consumed, mcqe)) lpfc_sli4_mq_release(phba->sli4_hba.mbx_wq); - return workposted; + spin_unlock_irqrestore(&phba->hbalock, iflags); + return false; } /** From patchwork Thu Jan 2 22:06:18 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234769 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 03777C3276E for ; Thu, 2 Jan 2020 22:19:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C3DA521582 for ; Thu, 2 Jan 2020 22:19:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003565; bh=kBs+PGhfDJoXp+X0PDY6anu/CdS5IPxlDl/7I/nC9Gc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=MeC2ZkbC/G7ci/2WFmE8oGrCUn7Q4UzxwKok5Wrouiz9c9luLnMcClnSbWyaxsPTj j0bWcVEuu81ALw/iY1ejiCpn7vQcRYI2T2JxGC7YvFhyBvlUE6yOcnSGWh99KhzwYD z+14jAXlWY/hhAIKw17SZPK7PgfdWRkXO3bDjlgc= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728581AbgABWTX (ORCPT ); Thu, 2 Jan 2020 17:19:23 -0500 Received: from mail.kernel.org ([198.145.29.99]:35500 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728579AbgABWTX (ORCPT ); Thu, 2 Jan 2020 17:19:23 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 3181D2253D; Thu, 2 Jan 2020 22:19:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003562; bh=kBs+PGhfDJoXp+X0PDY6anu/CdS5IPxlDl/7I/nC9Gc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=JJ4zJKISzQXgq/c4ezEoYfIY6MN41Y85gmYSrakBvjbrbpUB1p4ENku4WbMbRAvqh XUzPCwijd0VLk8CV8WRFzWR4Un4PVmzvKps1bKK18thcAYVp2f2p0Q4hb6P96HQJr+ ilPYOJfflNxCDREiW1w0fwONj3CE/xfqqd33X8sc= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Ezequiel Garcia , Robin Murphy , Heiko Stuebner , Joerg Roedel , Sasha Levin Subject: [PATCH 4.19 006/114] iommu: rockchip: Free domain on .domain_free Date: Thu, 2 Jan 2020 23:06:18 +0100 Message-Id: <20200102220029.805232190@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Ezequiel Garcia [ Upstream commit 42bb97b80f2e3bf592e3e99d109b67309aa1b30e ] IOMMU domain resource life is well-defined, managed by .domain_alloc and .domain_free. Therefore, domain-specific resources shouldn't be tied to the device life, but instead to its domain. Signed-off-by: Ezequiel Garcia Reviewed-by: Robin Murphy Acked-by: Heiko Stuebner Signed-off-by: Joerg Roedel Signed-off-by: Sasha Levin --- drivers/iommu/rockchip-iommu.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/iommu/rockchip-iommu.c b/drivers/iommu/rockchip-iommu.c index ad3e2b97469e..140b287e886c 100644 --- a/drivers/iommu/rockchip-iommu.c +++ b/drivers/iommu/rockchip-iommu.c @@ -977,13 +977,13 @@ static struct iommu_domain *rk_iommu_domain_alloc(unsigned type) if (!dma_dev) return NULL; - rk_domain = devm_kzalloc(dma_dev, sizeof(*rk_domain), GFP_KERNEL); + rk_domain = kzalloc(sizeof(*rk_domain), GFP_KERNEL); if (!rk_domain) return NULL; if (type == IOMMU_DOMAIN_DMA && iommu_get_dma_cookie(&rk_domain->domain)) - return NULL; + goto err_free_domain; /* * rk32xx iommus use a 2 level pagetable. @@ -1018,6 +1018,8 @@ err_free_dt: err_put_cookie: if (type == IOMMU_DOMAIN_DMA) iommu_put_dma_cookie(&rk_domain->domain); +err_free_domain: + kfree(rk_domain); return NULL; } @@ -1046,6 +1048,7 @@ static void rk_iommu_domain_free(struct iommu_domain *domain) if (domain->type == IOMMU_DOMAIN_DMA) iommu_put_dma_cookie(&rk_domain->domain); + kfree(rk_domain); } static int rk_iommu_add_device(struct device *dev) From patchwork Thu Jan 2 22:06:19 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234520 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8D322C3276C for ; Thu, 2 Jan 2020 22:55:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 61D9420848 for ; Thu, 2 Jan 2020 22:55:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578005727; bh=nNRpDmLVOlsxrpWf8bBYPJj4c6rbcEi2jILm3nqp3FM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Nbx9TGugS/Yyp/0IRVYm1tHQv8V0D4TEr0BuuW9E9+OCAXtEnxHav4uHy5S05klcu 8ukcqMkI0Mi5GmLgC2bDDuDs/AiIWziRL/gzftAzVtumSDINwkOsD35S7974bep8Da XlbhUuyrvsm74dqVqLYRp0WmtPw1CCuD5eV8a59k= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728574AbgABWT0 (ORCPT ); Thu, 2 Jan 2020 17:19:26 -0500 Received: from mail.kernel.org ([198.145.29.99]:35568 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728177AbgABWTZ (ORCPT ); Thu, 2 Jan 2020 17:19:25 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 8DA3A227BF; Thu, 2 Jan 2020 22:19:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003565; bh=nNRpDmLVOlsxrpWf8bBYPJj4c6rbcEi2jILm3nqp3FM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MGGFrhZWNo53L3fMtpvVhEZL6XZlSZUS8hU5jPW+prLLJ206xvecr4IsSJXlH8pjb j8NYdKDMEpkn+vxaifxOdhFoGyuJXiOn6lmclLK7wSq9Wq5IiBIQ25dsa5Tj9C1XHl xc9cGhDrtNLchFvswU/WwpuSH44rzJ2T8fNhnR+Y= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Thierry Reding , Joerg Roedel , Sasha Levin Subject: [PATCH 4.19 007/114] iommu/tegra-smmu: Fix page tables in > 4 GiB memory Date: Thu, 2 Jan 2020 23:06:19 +0100 Message-Id: <20200102220029.908670741@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Thierry Reding [ Upstream commit 96d3ab802e4930a29a33934373157d6dff1b2c7e ] Page tables that reside in physical memory beyond the 4 GiB boundary are currently not working properly. The reason is that when the physical address for page directory entries is read, it gets truncated at 32 bits and can cause crashes when passing that address to the DMA API. Fix this by first casting the PDE value to a dma_addr_t and then using the page frame number mask for the SMMU instance to mask out the invalid bits, which are typically used for mapping attributes, etc. Signed-off-by: Thierry Reding Signed-off-by: Joerg Roedel Signed-off-by: Sasha Levin --- drivers/iommu/tegra-smmu.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c index 121d3cb7ddd1..fa0ecb5e6380 100644 --- a/drivers/iommu/tegra-smmu.c +++ b/drivers/iommu/tegra-smmu.c @@ -164,9 +164,9 @@ static bool smmu_dma_addr_valid(struct tegra_smmu *smmu, dma_addr_t addr) return (addr & smmu->pfn_mask) == addr; } -static dma_addr_t smmu_pde_to_dma(u32 pde) +static dma_addr_t smmu_pde_to_dma(struct tegra_smmu *smmu, u32 pde) { - return pde << 12; + return (dma_addr_t)(pde & smmu->pfn_mask) << 12; } static void smmu_flush_ptc_all(struct tegra_smmu *smmu) @@ -551,6 +551,7 @@ static u32 *tegra_smmu_pte_lookup(struct tegra_smmu_as *as, unsigned long iova, dma_addr_t *dmap) { unsigned int pd_index = iova_pd_index(iova); + struct tegra_smmu *smmu = as->smmu; struct page *pt_page; u32 *pd; @@ -559,7 +560,7 @@ static u32 *tegra_smmu_pte_lookup(struct tegra_smmu_as *as, unsigned long iova, return NULL; pd = page_address(as->pd); - *dmap = smmu_pde_to_dma(pd[pd_index]); + *dmap = smmu_pde_to_dma(smmu, pd[pd_index]); return tegra_smmu_pte_offset(pt_page, iova); } @@ -601,7 +602,7 @@ static u32 *as_get_pte(struct tegra_smmu_as *as, dma_addr_t iova, } else { u32 *pd = page_address(as->pd); - *dmap = smmu_pde_to_dma(pd[pde]); + *dmap = smmu_pde_to_dma(smmu, pd[pde]); } return tegra_smmu_pte_offset(as->pts[pde], iova); @@ -626,7 +627,7 @@ static void tegra_smmu_pte_put_use(struct tegra_smmu_as *as, unsigned long iova) if (--as->count[pde] == 0) { struct tegra_smmu *smmu = as->smmu; u32 *pd = page_address(as->pd); - dma_addr_t pte_dma = smmu_pde_to_dma(pd[pde]); + dma_addr_t pte_dma = smmu_pde_to_dma(smmu, pd[pde]); tegra_smmu_set_pde(as, iova, 0); From patchwork Thu Jan 2 22:06:21 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234521 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 73526C3276C for ; Thu, 2 Jan 2020 22:55:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4075320848 for ; Thu, 2 Jan 2020 22:55:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578005724; bh=L+Pr4KaWWePHS/ARhpT5PkchyA1n1K5Ej5ew12Jliww=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=WV0as2faTH0y06y4C6PJQzFRSthwImosxclPBOvjJupGyVVkO6O1NlxMyoJdThGpV gFa+KkQNci9ep6AVW1EP/J87mem1QYKQCJ4DES1ATLxhosLEVMvbO94iM4g+H93yAQ tetW+q31Q8Ku3iGcz5dFb3Fq9Nm/Y9DXZW9LSRv8= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727511AbgABWzT (ORCPT ); Thu, 2 Jan 2020 17:55:19 -0500 Received: from mail.kernel.org ([198.145.29.99]:35750 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728605AbgABWTa (ORCPT ); Thu, 2 Jan 2020 17:19:30 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 6304421582; Thu, 2 Jan 2020 22:19:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003569; bh=L+Pr4KaWWePHS/ARhpT5PkchyA1n1K5Ej5ew12Jliww=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=o/ft4bX7L7RVi4y7wd05LR96gXl4p02jChd8DWZnDUShhSfgcwp6YHzQ60z9xg7Qz AlqGw1B7VCES7rZYJdrRt6yPKKpXiBSs6VM0ahlsV6DaMuHVzta527PKDO2t5ZjcKh uZ+B4dLMTNZ6YdheR6g3WtwW0Cs/r9df3ReRVaY0= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Lee Duncan , Mike Christie , David Disseldorp , "Martin K. Petersen" , Sasha Levin Subject: [PATCH 4.19 009/114] scsi: target: compare full CHAP_A Algorithm strings Date: Thu, 2 Jan 2020 23:06:21 +0100 Message-Id: <20200102220030.096331221@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: David Disseldorp [ Upstream commit 9cef2a7955f2754257a7cddedec16edae7b587d0 ] RFC 2307 states: For CHAP [RFC1994], in the first step, the initiator MUST send: CHAP_A= Where A1,A2... are proposed algorithms, in order of preference. ... For the Algorithm, as stated in [RFC1994], one value is required to be implemented: 5 (CHAP with MD5) LIO currently checks for this value by only comparing a single byte in the tokenized Algorithm string, which means that any value starting with a '5' (e.g. "55") is interpreted as "CHAP with MD5". Fix this by comparing the entire tokenized string. Reviewed-by: Lee Duncan Reviewed-by: Mike Christie Signed-off-by: David Disseldorp Link: https://lore.kernel.org/r/20190912095547.22427-2-ddiss@suse.de Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/target/iscsi/iscsi_target_auth.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/target/iscsi/iscsi_target_auth.c b/drivers/target/iscsi/iscsi_target_auth.c index e2fa3a3bc81d..b6bf605fa5c1 100644 --- a/drivers/target/iscsi/iscsi_target_auth.c +++ b/drivers/target/iscsi/iscsi_target_auth.c @@ -78,7 +78,7 @@ static int chap_check_algorithm(const char *a_str) if (!token) goto out; - if (!strncmp(token, "5", 1)) { + if (!strcmp(token, "5")) { pr_debug("Selected MD5 Algorithm\n"); kfree(orig); return CHAP_DIGEST_MD5; From patchwork Thu Jan 2 22:06:23 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234517 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7F958C3276C for ; Thu, 2 Jan 2020 22:55:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 55F7720848 for ; Thu, 2 Jan 2020 22:55:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578005748; bh=Joc9FjlSiz2Sy+hMBbPoK+XA6jLYij35zDIdJ/OEV14=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=fh2YJA3hGEJadItCcvPaxAkVEwNVagIRg9v+jAOZbiJEdHZPSpK86/CkkMi9muOJA LXomRXA0gEgk+6Q4Qhfbg/8t7udq0ysrige4dqBPqZYxtAAJw4qI+7RPALv/VMhH2N XxP9UPsi/8of8DPT1PNkDtTrKvw9LKV/7e4Gy5XU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728503AbgABWTA (ORCPT ); Thu, 2 Jan 2020 17:19:00 -0500 Received: from mail.kernel.org ([198.145.29.99]:34720 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728504AbgABWS7 (ORCPT ); Thu, 2 Jan 2020 17:18:59 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 1FBD521582; Thu, 2 Jan 2020 22:18:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003538; bh=Joc9FjlSiz2Sy+hMBbPoK+XA6jLYij35zDIdJ/OEV14=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=XjtFmDiQD7ZS9y9tkWHayrdYXdAgGzyVJaNn9zgsCuqQlZfXhIMA2J40WQI35pqYr 6S+N6F56Aea7J/zMK4dADAQPrBkA4f/k7vgTNzzdk2+ovM58ONdbagpMneXlk0M5rH uZBBisN+d+evFWOU76ran7y6PHiCfSPOiY1TpDFw= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Dan Carpenter , "Martin K. Petersen" , Sasha Levin Subject: [PATCH 4.19 011/114] scsi: csiostor: Dont enable IRQs too early Date: Thu, 2 Jan 2020 23:06:23 +0100 Message-Id: <20200102220030.277009455@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Dan Carpenter [ Upstream commit d6c9b31ac3064fbedf8961f120a4c117daa59932 ] These are called with IRQs disabled from csio_mgmt_tmo_handler() so we can't call spin_unlock_irq() or it will enable IRQs prematurely. Fixes: a3667aaed569 ("[SCSI] csiostor: Chelsio FCoE offload driver") Link: https://lore.kernel.org/r/20191019085913.GA14245@mwanda Signed-off-by: Dan Carpenter Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/csiostor/csio_lnode.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) diff --git a/drivers/scsi/csiostor/csio_lnode.c b/drivers/scsi/csiostor/csio_lnode.c index cc5611efc7a9..a8e29e3d3572 100644 --- a/drivers/scsi/csiostor/csio_lnode.c +++ b/drivers/scsi/csiostor/csio_lnode.c @@ -301,6 +301,7 @@ csio_ln_fdmi_rhba_cbfn(struct csio_hw *hw, struct csio_ioreq *fdmi_req) struct fc_fdmi_port_name *port_name; uint8_t buf[64]; uint8_t *fc4_type; + unsigned long flags; if (fdmi_req->wr_status != FW_SUCCESS) { csio_ln_dbg(ln, "WR error:%x in processing fdmi rhba cmd\n", @@ -385,13 +386,13 @@ csio_ln_fdmi_rhba_cbfn(struct csio_hw *hw, struct csio_ioreq *fdmi_req) len = (uint32_t)(pld - (uint8_t *)cmd); /* Submit FDMI RPA request */ - spin_lock_irq(&hw->lock); + spin_lock_irqsave(&hw->lock, flags); if (csio_ln_mgmt_submit_req(fdmi_req, csio_ln_fdmi_done, FCOE_CT, &fdmi_req->dma_buf, len)) { CSIO_INC_STATS(ln, n_fdmi_err); csio_ln_dbg(ln, "Failed to issue fdmi rpa req\n"); } - spin_unlock_irq(&hw->lock); + spin_unlock_irqrestore(&hw->lock, flags); } /* @@ -412,6 +413,7 @@ csio_ln_fdmi_dprt_cbfn(struct csio_hw *hw, struct csio_ioreq *fdmi_req) struct fc_fdmi_rpl *reg_pl; struct fs_fdmi_attrs *attrib_blk; uint8_t buf[64]; + unsigned long flags; if (fdmi_req->wr_status != FW_SUCCESS) { csio_ln_dbg(ln, "WR error:%x in processing fdmi dprt cmd\n", @@ -491,13 +493,13 @@ csio_ln_fdmi_dprt_cbfn(struct csio_hw *hw, struct csio_ioreq *fdmi_req) attrib_blk->numattrs = htonl(numattrs); /* Submit FDMI RHBA request */ - spin_lock_irq(&hw->lock); + spin_lock_irqsave(&hw->lock, flags); if (csio_ln_mgmt_submit_req(fdmi_req, csio_ln_fdmi_rhba_cbfn, FCOE_CT, &fdmi_req->dma_buf, len)) { CSIO_INC_STATS(ln, n_fdmi_err); csio_ln_dbg(ln, "Failed to issue fdmi rhba req\n"); } - spin_unlock_irq(&hw->lock); + spin_unlock_irqrestore(&hw->lock, flags); } /* @@ -512,6 +514,7 @@ csio_ln_fdmi_dhba_cbfn(struct csio_hw *hw, struct csio_ioreq *fdmi_req) void *cmd; struct fc_fdmi_port_name *port_name; uint32_t len; + unsigned long flags; if (fdmi_req->wr_status != FW_SUCCESS) { csio_ln_dbg(ln, "WR error:%x in processing fdmi dhba cmd\n", @@ -542,13 +545,13 @@ csio_ln_fdmi_dhba_cbfn(struct csio_hw *hw, struct csio_ioreq *fdmi_req) len += sizeof(*port_name); /* Submit FDMI request */ - spin_lock_irq(&hw->lock); + spin_lock_irqsave(&hw->lock, flags); if (csio_ln_mgmt_submit_req(fdmi_req, csio_ln_fdmi_dprt_cbfn, FCOE_CT, &fdmi_req->dma_buf, len)) { CSIO_INC_STATS(ln, n_fdmi_err); csio_ln_dbg(ln, "Failed to issue fdmi dprt req\n"); } - spin_unlock_irq(&hw->lock); + spin_unlock_irqrestore(&hw->lock, flags); } /** From patchwork Thu Jan 2 22:06:25 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234518 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 407A9C3276C for ; Thu, 2 Jan 2020 22:55:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0860E20848 for ; Thu, 2 Jan 2020 22:55:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578005744; bh=NiX2E+uuYpM05Vh12ekbO1YgiJ2RdkCs0o05eOn7N4E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=TaJaXDT0IuSeppBEfNlO8eQXVLpgSKx+BDc1FDyXmuPScKuEbyMWvwfyZMQOGq392 C+zZY/r6u8dStX8T0equHAtyuzft09jwP/CmTBp0FEBrxuQe5zcKUuqPdQ+LwaU/cU o1YjTuPdyDINvkF1ESxC8ZBI1vzFmiDbv/PFMBzs= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728397AbgABWTF (ORCPT ); Thu, 2 Jan 2020 17:19:05 -0500 Received: from mail.kernel.org ([198.145.29.99]:34850 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728528AbgABWTE (ORCPT ); Thu, 2 Jan 2020 17:19:04 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 002A422314; Thu, 2 Jan 2020 22:19:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003543; bh=NiX2E+uuYpM05Vh12ekbO1YgiJ2RdkCs0o05eOn7N4E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tc/y034uDxzMNzKUXNgwVDYlNKnUdgVbNpTvTTy3yY7yLKBiXiA9MDibG3BxyBdhF bhhKqFSG4pnDZSuzWlrEaag3RyfDlxi3Jp2SEgt6Ki1G4dd1QiNzYcYiVngzOjBCLR X6hfk3XjYLp1LLo8gcupkQKgMwijT5pZdvbDKiFw= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Michael Ellerman , Sasha Levin Subject: [PATCH 4.19 013/114] powerpc/pseries: Mark accumulate_stolen_time() as notrace Date: Thu, 2 Jan 2020 23:06:25 +0100 Message-Id: <20200102220030.448526596@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Michael Ellerman [ Upstream commit eb8e20f89093b64f48975c74ccb114e6775cee22 ] accumulate_stolen_time() is called prior to interrupt state being reconciled, which can trip the warning in arch_local_irq_restore(): WARNING: CPU: 5 PID: 1017 at arch/powerpc/kernel/irq.c:258 .arch_local_irq_restore+0x9c/0x130 ... NIP .arch_local_irq_restore+0x9c/0x130 LR .rb_start_commit+0x38/0x80 Call Trace: .ring_buffer_lock_reserve+0xe4/0x620 .trace_function+0x44/0x210 .function_trace_call+0x148/0x170 .ftrace_ops_no_ops+0x180/0x1d0 ftrace_call+0x4/0x8 .accumulate_stolen_time+0x1c/0xb0 decrementer_common+0x124/0x160 For now just mark it as notrace. We may change the ordering to call it after interrupt state has been reconciled, but that is a larger change. Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20191024055932.27940-1-mpe@ellerman.id.au Signed-off-by: Sasha Levin --- arch/powerpc/kernel/time.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c index 8487ad686462..5449e76cf2df 100644 --- a/arch/powerpc/kernel/time.c +++ b/arch/powerpc/kernel/time.c @@ -235,7 +235,7 @@ static u64 scan_dispatch_log(u64 stop_tb) * Accumulate stolen time by scanning the dispatch trace log. * Called on entry from user mode. */ -void accumulate_stolen_time(void) +void notrace accumulate_stolen_time(void) { u64 sst, ust; unsigned long save_irq_soft_mask = irq_soft_mask_return(); From patchwork Thu Jan 2 22:06:27 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234771 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 83854C3276D for ; Thu, 2 Jan 2020 22:19:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5922E22B48 for ; Thu, 2 Jan 2020 22:19:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003551; bh=8IWJOi6KRoy257bmHLGoFSeIOMVROHSJj/ROJ37nNPM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=APPIOn8kHU2lEe2wudQWjosXbVuTu2uAf5ZAHjLpRbai5iaisJ8mKAoZyMz562bqq T+LOoQvl+9IQLVuEIAaG/nAsTtGhEnHiH+zXkxqYmChOFPNgTq8M8divsCNrfyCOsS sU+DMfPfPEWp0tllkiliboj2kQZtw5ZTQAK94NPk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728543AbgABWTJ (ORCPT ); Thu, 2 Jan 2020 17:19:09 -0500 Received: from mail.kernel.org ([198.145.29.99]:35024 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728547AbgABWTI (ORCPT ); Thu, 2 Jan 2020 17:19:08 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id C385321582; Thu, 2 Jan 2020 22:19:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003548; bh=8IWJOi6KRoy257bmHLGoFSeIOMVROHSJj/ROJ37nNPM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tpz0HgDZwiQjSd5kcqVkj1thYnlQpvMU1sIouC0l8fKcy+WS+Zu6YvO2/f5RxLlW+ YXAU5EaLOlOSmwdTYIRX+hQYhwwfRjXbUakKz7O9B4S8TTnosGKUVr/eJni+nLHwy1 UWcEn9A5b7Q4l3/i9o1rJkwvTBy0KZthKafRtFwA= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Michael Ellerman , Sasha Levin Subject: [PATCH 4.19 015/114] powerpc/tools: Dont quote $objdump in scripts Date: Thu, 2 Jan 2020 23:06:27 +0100 Message-Id: <20200102220030.654375518@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Michael Ellerman [ Upstream commit e44ff9ea8f4c8a90c82f7b85bd4f5e497c841960 ] Some of our scripts are passed $objdump and then call it as "$objdump". This doesn't work if it contains spaces because we're using ccache, for example you get errors such as: ./arch/powerpc/tools/relocs_check.sh: line 48: ccache ppc64le-objdump: No such file or directory ./arch/powerpc/tools/unrel_branch_check.sh: line 26: ccache ppc64le-objdump: No such file or directory Fix it by not quoting the string when we expand it, allowing the shell to do the right thing for us. Fixes: a71aa05e1416 ("powerpc: Convert relocs_check to a shell script using grep") Fixes: 4ea80652dc75 ("powerpc/64s: Tool to flag direct branches from unrelocated interrupt vectors") Signed-off-by: Michael Ellerman Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20191024004730.32135-1-mpe@ellerman.id.au Signed-off-by: Sasha Levin --- arch/powerpc/tools/relocs_check.sh | 2 +- arch/powerpc/tools/unrel_branch_check.sh | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/powerpc/tools/relocs_check.sh b/arch/powerpc/tools/relocs_check.sh index ec2d5c835170..d6c16e7faa38 100755 --- a/arch/powerpc/tools/relocs_check.sh +++ b/arch/powerpc/tools/relocs_check.sh @@ -23,7 +23,7 @@ objdump="$1" vmlinux="$2" bad_relocs=$( -"$objdump" -R "$vmlinux" | +$objdump -R "$vmlinux" | # Only look at relocation lines. grep -E '\:' | awk '{print $1}' ) BRANCHES=$( -"$objdump" -R "$vmlinux" -D --start-address=0xc000000000000000 \ +$objdump -R "$vmlinux" -D --start-address=0xc000000000000000 \ --stop-address=${end_intr} | grep -e "^c[0-9a-f]*:[[:space:]]*\([0-9a-f][0-9a-f][[:space:]]\)\{4\}[[:space:]]*b" | grep -v '\<__start_initialization_multiplatform>' | From patchwork Thu Jan 2 22:06:29 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234763 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8CEDBC3276D for ; Thu, 2 Jan 2020 22:20:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5924B2253D for ; Thu, 2 Jan 2020 22:20:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003644; bh=8VqzkoxjJLB3l5GP5JBQCAJeVpBqdl9yDEo2CnjKTCU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=PAgaj/0RRypfc50ksD3iJYnK8lGGs+iqZbmVXmGngmx2NniygfczFOqhw7Q1cfLrp CCtHmxtHoNRS8k83m3PAIPGnz1nuVGqi5AxEYw9Y85B+H2epKlXhIYZeqB3eiE7ysP xTJ5wxsJPkoXPr2n8CD/LmtqoKwIRZNJMVrqF0C8= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727315AbgABWUn (ORCPT ); Thu, 2 Jan 2020 17:20:43 -0500 Received: from mail.kernel.org ([198.145.29.99]:38646 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728852AbgABWUm (ORCPT ); Thu, 2 Jan 2020 17:20:42 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 6C92A2253D; Thu, 2 Jan 2020 22:20:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003641; bh=8VqzkoxjJLB3l5GP5JBQCAJeVpBqdl9yDEo2CnjKTCU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=T0SgWwUP2QDCCq+VF9+XwvkOFAuLy6trnoTXmXm82OqAcSdZo/OF+cAP1wtE5SlRd TH09pPgYGH6foHCs+HtsuzPWPlN/QUA7nnG81zDldfLHBDfTEpfTKNCThjPbutOY0S XiAJBd9BUzSHfJEKrEKCDoNq2CecrYvMUAuzbc5A= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, =?utf-8?q?Guido_G=C3=BCnther?= , Pavel Machek , Dan Murphy , Sasha Levin Subject: [PATCH 4.19 017/114] leds: lm3692x: Handle failure to probe the regulator Date: Thu, 2 Jan 2020 23:06:29 +0100 Message-Id: <20200102220030.874892409@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Guido Günther [ Upstream commit 396128d2ffcba6e1954cfdc9a89293ff79cbfd7c ] Instead use devm_regulator_get_optional since the regulator is optional and check for errors. Signed-off-by: Guido Günther Acked-by: Pavel Machek Reviewed-by: Dan Murphy Signed-off-by: Pavel Machek Signed-off-by: Sasha Levin --- drivers/leds/leds-lm3692x.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/drivers/leds/leds-lm3692x.c b/drivers/leds/leds-lm3692x.c index 4f413a7c5f05..d79a66a73169 100644 --- a/drivers/leds/leds-lm3692x.c +++ b/drivers/leds/leds-lm3692x.c @@ -337,9 +337,18 @@ static int lm3692x_probe_dt(struct lm3692x_led *led) return ret; } - led->regulator = devm_regulator_get(&led->client->dev, "vled"); - if (IS_ERR(led->regulator)) + led->regulator = devm_regulator_get_optional(&led->client->dev, "vled"); + if (IS_ERR(led->regulator)) { + ret = PTR_ERR(led->regulator); + if (ret != -ENODEV) { + if (ret != -EPROBE_DEFER) + dev_err(&led->client->dev, + "Failed to get vled regulator: %d\n", + ret); + return ret; + } led->regulator = NULL; + } child = device_get_next_child_node(&led->client->dev, child); if (!child) { From patchwork Thu Jan 2 22:06:34 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234529 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3DADAC3276C for ; Thu, 2 Jan 2020 22:54:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 09DEA21835 for ; Thu, 2 Jan 2020 22:54:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578005674; bh=pd/wt+YcBDprBLzmbtoE6qnAlsY3BlzyUlRVgKeZAZ4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=cGOjRpwa6TLDKb5zJehkuaSR/mVkO81DjW32gBVbS/oEH5qeyMIz+dwfvMq0BKIXZ P8XVPIzcUhHIL9hOlY3d7I+Wjd/LLMnqFfB4VHNvBmt/WxVJY2KLyAO3BynOAvQQ/X /o3rmbK83+PLMA5MytwzmICwmM4q678MTCm0hT6c= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728568AbgABWUb (ORCPT ); Thu, 2 Jan 2020 17:20:31 -0500 Received: from mail.kernel.org ([198.145.29.99]:38100 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728609AbgABWUa (ORCPT ); Thu, 2 Jan 2020 17:20:30 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 7DF4C24653; Thu, 2 Jan 2020 22:20:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003630; bh=pd/wt+YcBDprBLzmbtoE6qnAlsY3BlzyUlRVgKeZAZ4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YrBFqGCrzXVnE9SUxMLFGVPuzL7bNS+izcJBWpe8C5EMuXo8S234ciThkAweXmKXW MtnQbUH9RVFDm6L+UOgFLABEvilhnpQ8cTYZI9L+4WD1nDAc12pOGKUFC1xFAAqeUn JflJd2PR1XQRx/S1cqOnGA8eZ5vO8XoRbquV6UZM= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Matthew Bobrowski , Jan Kara , Ritesh Harjani , Theodore Tso , Sasha Levin Subject: [PATCH 4.19 022/114] ext4: update direct I/O read lock pattern for IOCB_NOWAIT Date: Thu, 2 Jan 2020 23:06:34 +0100 Message-Id: <20200102220031.395561173@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Matthew Bobrowski [ Upstream commit 548feebec7e93e58b647dba70b3303dcb569c914 ] This patch updates the lock pattern in ext4_direct_IO_read() to not block on inode lock in cases of IOCB_NOWAIT direct I/O reads. The locking condition implemented here is similar to that of 942491c9e6d6 ("xfs: fix AIM7 regression"). Fixes: 16c54688592c ("ext4: Allow parallel DIO reads") Signed-off-by: Matthew Bobrowski Reviewed-by: Jan Kara Reviewed-by: Ritesh Harjani Link: https://lore.kernel.org/r/c5d5e759f91747359fbd2c6f9a36240cf75ad79f.1572949325.git.mbobrowski@mbobrowski.org Signed-off-by: Theodore Ts'o Signed-off-by: Sasha Levin --- fs/ext4/inode.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 215802cbc42b..00d0c4b8fa30 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -3848,7 +3848,13 @@ static ssize_t ext4_direct_IO_read(struct kiocb *iocb, struct iov_iter *iter) * writes & truncates and since we take care of writing back page cache, * we are protected against page writeback as well. */ - inode_lock_shared(inode); + if (iocb->ki_flags & IOCB_NOWAIT) { + if (!inode_trylock_shared(inode)) + return -EAGAIN; + } else { + inode_lock_shared(inode); + } + ret = filemap_write_and_wait_range(mapping, iocb->ki_pos, iocb->ki_pos + count - 1); if (ret) From patchwork Thu Jan 2 22:06:36 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234764 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4D8B0C3276D for ; Thu, 2 Jan 2020 22:20:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 190262253D for ; Thu, 2 Jan 2020 22:20:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003637; bh=V3dVkhxjE4e30OhRhtsDseRzbnQeEmmeGqu7vSNtaNw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=VFjQaKc380WHZ/q9zjamGXaoPKG/nWsu+CWbqOLC7AGoFvo7qIBpwx7qdR8pf+Xp1 pi4nTsoNCOxHeFt9iJHgU8H4talkdS2ZNbZldhQr/Zd6nKdtHPHfbx3ODOYOMINYE6 cU2MM7dyikKKjpvCiEc26gfqrVZy1+9xfQl6G4o4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728824AbgABWUf (ORCPT ); Thu, 2 Jan 2020 17:20:35 -0500 Received: from mail.kernel.org ([198.145.29.99]:38314 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728609AbgABWUf (ORCPT ); Thu, 2 Jan 2020 17:20:35 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 4045B2253D; Thu, 2 Jan 2020 22:20:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003634; bh=V3dVkhxjE4e30OhRhtsDseRzbnQeEmmeGqu7vSNtaNw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Mh6seBUKKwGkclQwGxCmeylfOi/2nnigth2Yot+yxmyJUTrlGaR3vpbRX3+6kq44U aM4IT2No30FJP4PLgHkpbFJaSJaPDoEv9BVhQM9DyxkcXDGyOYUowUtjVa++eKPJWi Q94FFOlEbiKUYsqkUaMJCTjwSJT8m5KwOQgi0XVM= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Theodore Tso , Jan Kara , Sasha Levin Subject: [PATCH 4.19 024/114] jbd2: Fix statistics for the number of logged blocks Date: Thu, 2 Jan 2020 23:06:36 +0100 Message-Id: <20200102220031.569867814@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Jan Kara [ Upstream commit 015c6033068208d6227612c878877919f3fcf6b6 ] jbd2 statistics counting number of blocks logged in a transaction was wrong. It didn't count the commit block and more importantly it didn't count revoke descriptor blocks. Make sure these get properly counted. Reviewed-by: Theodore Ts'o Signed-off-by: Jan Kara Link: https://lore.kernel.org/r/20191105164437.32602-13-jack@suse.cz Signed-off-by: Theodore Ts'o Signed-off-by: Sasha Levin --- fs/jbd2/commit.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c index 24f86ffe11d7..020bd7a0d8e0 100644 --- a/fs/jbd2/commit.c +++ b/fs/jbd2/commit.c @@ -724,7 +724,6 @@ start_journal_io: submit_bh(REQ_OP_WRITE, REQ_SYNC, bh); } cond_resched(); - stats.run.rs_blocks_logged += bufs; /* Force a new descriptor to be generated next time round the loop. */ @@ -811,6 +810,7 @@ start_journal_io: if (unlikely(!buffer_uptodate(bh))) err = -EIO; jbd2_unfile_log_bh(bh); + stats.run.rs_blocks_logged++; /* * The list contains temporary buffer heads created by @@ -856,6 +856,7 @@ start_journal_io: BUFFER_TRACE(bh, "ph5: control buffer writeout done: unfile"); clear_buffer_jwrite(bh); jbd2_unfile_log_bh(bh); + stats.run.rs_blocks_logged++; __brelse(bh); /* One for getblk */ /* AKPM: bforget here */ } @@ -877,6 +878,7 @@ start_journal_io: } if (cbh) err = journal_wait_on_commit_record(journal, cbh); + stats.run.rs_blocks_logged++; if (jbd2_has_feature_async_commit(journal) && journal->j_flags & JBD2_BARRIER) { blkdev_issue_flush(journal->j_dev, GFP_NOFS, NULL); From patchwork Thu Jan 2 22:06:38 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234530 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5B47DC3276D for ; Thu, 2 Jan 2020 22:54:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 30971222C3 for ; Thu, 2 Jan 2020 22:54:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578005668; bh=gvAaG+d7XPXErCZz0EtzFyx+y9qm2zos3QZhL5yM2yY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=yDZcm3ECR2kSM0ukLBh9r0tzuRcxH7QB+LbJyCU23ra2LpulFBlBSzYD9cttZEXRE 6RmB8/cV7kop0iSkbNoqbTqvZMfh1lhWVLGQMQBbCxnmL+TUwXoC6tP+RebNPfSC6c AtK+0ftlMpIJF+Ug6yuFOS42FlRIMTgVApBLZWqk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728628AbgABWUk (ORCPT ); Thu, 2 Jan 2020 17:20:40 -0500 Received: from mail.kernel.org ([198.145.29.99]:38554 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726099AbgABWUk (ORCPT ); Thu, 2 Jan 2020 17:20:40 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 103312253D; Thu, 2 Jan 2020 22:20:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003639; bh=gvAaG+d7XPXErCZz0EtzFyx+y9qm2zos3QZhL5yM2yY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=lqJqLnmJL02z96cpdJc72/BdCJQg/f4sYd05IWWSEzEsP8hKiNxLv7NIVEO9ojC/g wYQS7BQl1a0jUOu6aSXcfwxGzU7ZIVa9J4QFTHr+skIEcazFHpyELDPMWwlcrxAA4T XX2F1j82pJHFHlW77hZ2x+qGgfliHFPxY/FkrFac= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Dick Kennedy , James Smart , "Martin K. Petersen" , Sasha Levin Subject: [PATCH 4.19 026/114] scsi: lpfc: Fix duplicate unreg_rpi error in port offline flow Date: Thu, 2 Jan 2020 23:06:38 +0100 Message-Id: <20200102220031.755670668@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: James Smart [ Upstream commit 7cfd5639d99bec0d27af089d0c8c114330e43a72 ] If the driver receives a login that is later then LOGO'd by the remote port (aka ndlp), the driver, upon the completion of the LOGO ACC transmission, will logout the node and unregister the rpi that is being used for the node. As part of the unreg, the node's rpi value is replaced by the LPFC_RPI_ALLOC_ERROR value. If the port is subsequently offlined, the offline walks the nodes and ensures they are logged out, which possibly entails unreg'ing their rpi values. This path does not validate the node's rpi value, thus doesn't detect that it has been unreg'd already. The replaced rpi value is then used when accessing the rpi bitmask array which tracks active rpi values. As the LPFC_RPI_ALLOC_ERROR value is not a valid index for the bitmask, it may fault the system. Revise the rpi release code to detect when the rpi value is the replaced RPI_ALLOC_ERROR value and ignore further release steps. Link: https://lore.kernel.org/r/20191105005708.7399-2-jsmart2021@gmail.com Signed-off-by: Dick Kennedy Signed-off-by: James Smart Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/lpfc/lpfc_sli.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index bd555f886d27..a801917d3c19 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -17867,6 +17867,13 @@ lpfc_sli4_alloc_rpi(struct lpfc_hba *phba) static void __lpfc_sli4_free_rpi(struct lpfc_hba *phba, int rpi) { + /* + * if the rpi value indicates a prior unreg has already + * been done, skip the unreg. + */ + if (rpi == LPFC_RPI_ALLOC_ERROR) + return; + if (test_and_clear_bit(rpi, phba->sli4_hba.rpi_bmask)) { phba->sli4_hba.rpi_count--; phba->sli4_hba.max_cfg_param.rpi_used--; From patchwork Thu Jan 2 22:06:40 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234522 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 20ED6C3F68F for ; Thu, 2 Jan 2020 22:55:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E7BFC20848 for ; Thu, 2 Jan 2020 22:55:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578005717; bh=xhTQ3xdz1oBuLHajguPgBXuKNFb9qwF9r7qZ5NJCneY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=FASqXQBr0pGBUR+Ijc0kPrzAufOygWMaN3HidvbKn9FwIjeDSyDhzddywE2CnwF7n sHyflK6/3/hN2QtfsXw7+2J6mPCEW7CwxwADIspZh+PkW4V8xRLkMreEuFcA4PTiBr 3GAxvIz9FsttGKZ8XgKrTf831xQW/LCNUSIJAxm0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728616AbgABWTk (ORCPT ); Thu, 2 Jan 2020 17:19:40 -0500 Received: from mail.kernel.org ([198.145.29.99]:36092 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728467AbgABWTk (ORCPT ); Thu, 2 Jan 2020 17:19:40 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id F0B3C22B48; Thu, 2 Jan 2020 22:19:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003579; bh=xhTQ3xdz1oBuLHajguPgBXuKNFb9qwF9r7qZ5NJCneY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=blRpFpW9FHF6BlEexIlwH/Ew4QtknqGdSugILm6W7j6YX9pGNdm1NT6Ou30oJ/JUY LL+GhM4L/jkmgBlWGPJPQgJl4raXhvCJsJPcq284+QSkdm3wYCsEQdVPrw5rKGz6Rs u+NcX17fPBmpjCBbSUzJxGK7UBNqYLKnbk0G9o/c= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Stephen Boyd , Jeffrey Hugo , Sasha Levin Subject: [PATCH 4.19 028/114] clk: qcom: Allow constant ratio freq tables for rcg Date: Thu, 2 Jan 2020 23:06:40 +0100 Message-Id: <20200102220031.958075125@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Jeffrey Hugo [ Upstream commit efd164b5520afd6fb2883b68e0d408a7de29c491 ] Some RCGs (the gfx_3d_src_clk in msm8998 for example) are basically just some constant ratio from the input across the entire frequency range. It would be great if we could specify the frequency table as a single entry constant ratio instead of a long list, ie: { .src = P_GPUPLL0_OUT_EVEN, .pre_div = 3 }, { } So, lets support that. We need to fix a corner case in qcom_find_freq() where if the freq table is non-null, but has no frequencies, we end up returning an "entry" before the table array, which is bad. Then, we need ignore the freq from the table, and instead base everything on the requested freq. Suggested-by: Stephen Boyd Signed-off-by: Jeffrey Hugo Link: https://lkml.kernel.org/r/20191031185715.15504-1-jeffrey.l.hugo@gmail.com Signed-off-by: Stephen Boyd Signed-off-by: Sasha Levin --- drivers/clk/qcom/clk-rcg2.c | 2 ++ drivers/clk/qcom/common.c | 3 +++ 2 files changed, 5 insertions(+) diff --git a/drivers/clk/qcom/clk-rcg2.c b/drivers/clk/qcom/clk-rcg2.c index 52208d4165f4..51b2388d80ac 100644 --- a/drivers/clk/qcom/clk-rcg2.c +++ b/drivers/clk/qcom/clk-rcg2.c @@ -206,6 +206,8 @@ static int _freq_tbl_determine_rate(struct clk_hw *hw, const struct freq_tbl *f, if (clk_flags & CLK_SET_RATE_PARENT) { rate = f->freq; if (f->pre_div) { + if (!rate) + rate = req->rate; rate /= 2; rate *= f->pre_div + 1; } diff --git a/drivers/clk/qcom/common.c b/drivers/clk/qcom/common.c index db9b2471ac40..bfb6d6065a90 100644 --- a/drivers/clk/qcom/common.c +++ b/drivers/clk/qcom/common.c @@ -29,6 +29,9 @@ struct freq_tbl *qcom_find_freq(const struct freq_tbl *f, unsigned long rate) if (!f) return NULL; + if (!f->freq) + return f; + for (; f->freq; f++) if (rate <= f->freq) return f; From patchwork Thu Jan 2 22:06:41 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234523 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C6B5CC3276D for ; Thu, 2 Jan 2020 22:55:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9B7A221835 for ; Thu, 2 Jan 2020 22:55:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578005713; bh=mhhFsvZD7JJ4GBURdn8QBsD1PYSlO46h7vMKzJUHME0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ZZpbQzVsRP1uxSu/fGhsl3C80BGVe2xxh80eGmF8GbLE/8NkyX71/JrJBlhDmZh/Y Zja0j2NlP7Sca5b8chWSj3QHP0U5bPy3LatDO3VR+uFfEThqxQnMzJHU7QDrZ0rvzf 243kchv2fyeCcA4JmZsAc5cvXLu/bTK48RIvUPPE= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728638AbgABWTn (ORCPT ); Thu, 2 Jan 2020 17:19:43 -0500 Received: from mail.kernel.org ([198.145.29.99]:36176 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727944AbgABWTm (ORCPT ); Thu, 2 Jan 2020 17:19:42 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 5AB2121582; Thu, 2 Jan 2020 22:19:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003581; bh=mhhFsvZD7JJ4GBURdn8QBsD1PYSlO46h7vMKzJUHME0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=B5XQwFE7b4OVHlTHjFn/YQpb4R0xZUd8ekzPfPj0dGRSAOjtmDAsmxHUAJZyLF70Y jJghbntW0XbSNl3qbseF/HC6gHI9zbQB03ck0ckXiekrkiSTHUfZOASsTvA2I4xm/Q aBs6GDGUfRYyEVXky9FbgCs1nLl1dJUyG+NtNGbA= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Michael Hennerich , Alexandru Ardelean , Stephen Boyd , Sasha Levin Subject: [PATCH 4.19 029/114] clk: clk-gpio: propagate rate change to parent Date: Thu, 2 Jan 2020 23:06:41 +0100 Message-Id: <20200102220032.059523763@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Michael Hennerich [ Upstream commit fc59462c5ce60da119568fac325c92fc6b7c6175 ] For an external clock source, which is gated via a GPIO, the rate change should typically be propagated to the parent clock. The situation where we are requiring this propagation, is when an external clock is connected to override an internal clock (which typically has a fixed rate). The external clock can have a different rate than the internal one, and may also be variable, thus requiring the rate propagation. This rate change wasn't propagated until now, and it's unclear about cases where this shouldn't be propagated. Thus, it's unclear whether this is fixing a bug, or extending the current driver behavior. Also, it's unsure about whether this may break any existing setups; in the case that it does, a device-tree property may be added to disable this flag. Signed-off-by: Michael Hennerich Signed-off-by: Alexandru Ardelean Link: https://lkml.kernel.org/r/20191108071718.17985-1-alexandru.ardelean@analog.com Signed-off-by: Stephen Boyd Signed-off-by: Sasha Levin --- drivers/clk/clk-gpio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/clk/clk-gpio.c b/drivers/clk/clk-gpio.c index 40af4fbab4d2..af9cc00d2d92 100644 --- a/drivers/clk/clk-gpio.c +++ b/drivers/clk/clk-gpio.c @@ -248,7 +248,7 @@ static int gpio_clk_driver_probe(struct platform_device *pdev) else clk = clk_register_gpio_gate(&pdev->dev, node->name, parent_names ? parent_names[0] : NULL, gpiod, - 0); + CLK_SET_RATE_PARENT); if (IS_ERR(clk)) return PTR_ERR(clk); From patchwork Thu Jan 2 22:06:43 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234524 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 968F1C3276C for ; Thu, 2 Jan 2020 22:55:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 635F120848 for ; Thu, 2 Jan 2020 22:55:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578005709; bh=AFNVl8nrgOrO2tqw7CjSzHBMngU35vBQOYU2AwsBhrk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=qL6CB/kmmhHmjlX02Zt4KZMP48zdtLlF2QgUVV6RYhUcmy5OAkUNY2zTg9E3UFE4q xrXT4xgVamRiNpKIgNhs0+rhXO5es2XfG9bXF9ZiUzavyfd3T7uthCV9TbgxwgMW0n IVI8L40GdAfyuuWheuth7E9rue64gJ6zTiZqS4so= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728664AbgABWTs (ORCPT ); Thu, 2 Jan 2020 17:19:48 -0500 Received: from mail.kernel.org ([198.145.29.99]:36324 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728657AbgABWTr (ORCPT ); Thu, 2 Jan 2020 17:19:47 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 489AB21582; Thu, 2 Jan 2020 22:19:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003586; bh=AFNVl8nrgOrO2tqw7CjSzHBMngU35vBQOYU2AwsBhrk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BZtjUkK5SItZ1f+Dcqfc7MxigmmT7nRATkSF2Ut7qPC2/wOYedyDtLHLqf0R5Js+B QVScHDn0rdkcfglkYAKhiR8YYouZVtxEBhJ739C/Vsen8Eeyw59nUVa70qYDBDOVS6 MlQhAiUUTYTQ2BprC/bEOo60Lup1Dh5JE2NRyc6M= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Paul Cercueil , Marc Zyngier , Sasha Levin Subject: [PATCH 4.19 031/114] irqchip: ingenic: Error out if IRQ domain creation failed Date: Thu, 2 Jan 2020 23:06:43 +0100 Message-Id: <20200102220032.233364107@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Paul Cercueil [ Upstream commit 52ecc87642f273a599c9913b29fd179c13de457b ] If we cannot create the IRQ domain, the driver should fail to probe instead of succeeding with just a warning message. Signed-off-by: Paul Cercueil Signed-off-by: Marc Zyngier Link: https://lore.kernel.org/r/1570015525-27018-3-git-send-email-zhouyanjie@zoho.com Signed-off-by: Sasha Levin --- drivers/irqchip/irq-ingenic.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) diff --git a/drivers/irqchip/irq-ingenic.c b/drivers/irqchip/irq-ingenic.c index 2ff08986b536..be6923abf9a4 100644 --- a/drivers/irqchip/irq-ingenic.c +++ b/drivers/irqchip/irq-ingenic.c @@ -117,6 +117,14 @@ static int __init ingenic_intc_of_init(struct device_node *node, goto out_unmap_irq; } + domain = irq_domain_add_legacy(node, num_chips * 32, + JZ4740_IRQ_BASE, 0, + &irq_domain_simple_ops, NULL); + if (!domain) { + err = -ENOMEM; + goto out_unmap_base; + } + for (i = 0; i < num_chips; i++) { /* Mask all irqs */ writel(0xffffffff, intc->base + (i * CHIP_SIZE) + @@ -143,14 +151,11 @@ static int __init ingenic_intc_of_init(struct device_node *node, IRQ_NOPROBE | IRQ_LEVEL); } - domain = irq_domain_add_legacy(node, num_chips * 32, JZ4740_IRQ_BASE, 0, - &irq_domain_simple_ops, NULL); - if (!domain) - pr_warn("unable to register IRQ domain\n"); - setup_irq(parent_irq, &intc_cascade_action); return 0; +out_unmap_base: + iounmap(intc->base); out_unmap_irq: irq_dispose_mapping(parent_irq); out_free: From patchwork Thu Jan 2 22:06:44 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234768 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1F5A8C3276C for ; Thu, 2 Jan 2020 22:19:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DF31824650 for ; Thu, 2 Jan 2020 22:19:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003591; bh=4oyLsrmYWoS4GjZR0IN8IUt5EC2eJlOpBX7eJQplCFo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=UVsblznE6nmmazbdIcUb0NxlYcRCSLB8FeoNtLd3l+P1eW0T4F9n2Gxgrg14p4aws RPzJntXslPxByS4jD+44NaFF5AraxNwJBO9HEF+OBQJDScs0NwLDqh+2Y4O4w4JBy5 Jas5NVh3Q7SVij6gRDy8nNj6470aR1UaIizPFFoE= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728670AbgABWTu (ORCPT ); Thu, 2 Jan 2020 17:19:50 -0500 Received: from mail.kernel.org ([198.145.29.99]:36414 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728665AbgABWTt (ORCPT ); Thu, 2 Jan 2020 17:19:49 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id A558622B48; Thu, 2 Jan 2020 22:19:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003589; bh=4oyLsrmYWoS4GjZR0IN8IUt5EC2eJlOpBX7eJQplCFo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nbWrLSWm/7XVzHg1D0uvebFcZEGYKDzFum7navWh0A2CLgw6kizdim7LySerQgS/O kk/pfpip8ZcG30SaXPjl2wEnT1vy+cSWd694Dw2tKFZ1IN/VYevI1Fm/PIDVjuSqZi +GQ2LQnLljlmH8C9A2pJT78/c+uwi3f89S+BxEnw= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Barry Song , Stephan Gerhold , Daniel Thompson , Mark Brown , Lee Jones , Sasha Levin Subject: [PATCH 4.19 032/114] mfd: mfd-core: Honour Device Trees request to disable a child-device Date: Thu, 2 Jan 2020 23:06:44 +0100 Message-Id: <20200102220032.331065471@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Lee Jones [ Upstream commit 6b5c350648b857047b47acf74a57087ad27d6183 ] Until now, MFD has assumed all child devices passed to it (via mfd_cells) are to be registered. It does not take into account requests from Device Tree and the like to disable child devices on a per-platform basis. Well now it does. Link: https://www.spinics.net/lists/arm-kernel/msg366309.html Link: https://lkml.org/lkml/2019/8/22/1350 Reported-by: Barry Song Reported-by: Stephan Gerhold Reviewed-by: Daniel Thompson Reviewed-by: Mark Brown Tested-by: Stephan Gerhold Signed-off-by: Lee Jones Signed-off-by: Sasha Levin --- drivers/mfd/mfd-core.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/mfd/mfd-core.c b/drivers/mfd/mfd-core.c index 182973df1aed..99a9c5c56ea9 100644 --- a/drivers/mfd/mfd-core.c +++ b/drivers/mfd/mfd-core.c @@ -178,6 +178,11 @@ static int mfd_add_device(struct device *parent, int id, if (parent->of_node && cell->of_compatible) { for_each_child_of_node(parent->of_node, np) { if (of_device_is_compatible(np, cell->of_compatible)) { + if (!of_device_is_available(np)) { + /* Ignore disabled devices error free */ + ret = 0; + goto fail_alias; + } pdev->dev.of_node = np; pdev->dev.fwnode = &np->fwnode; break; From patchwork Thu Jan 2 22:06:46 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234525 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 497C9C3276C for ; Thu, 2 Jan 2020 22:55:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1BBAA20848 for ; Thu, 2 Jan 2020 22:55:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578005706; bh=7nozndicwzu6wWckXf4Hecr8ErNysisPu4jA4safFwM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Cnie7kg0lXku+0hmyb4qm+i1/Cyu6OAwlTcIRkTHKK+AW2l8vZfkFPZRqtOE3elcl Pz9xM83EaIEi4/su/AmUY/Zthrp8VaMBba9gYEmErYeTbqiW3MBZfSilCDDsOR7teR j5DW4qwvv1Ra0Pwva2IBUicpVEX6CPpLq5o9d0Oc= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728685AbgABWTz (ORCPT ); Thu, 2 Jan 2020 17:19:55 -0500 Received: from mail.kernel.org ([198.145.29.99]:36570 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728382AbgABWTz (ORCPT ); Thu, 2 Jan 2020 17:19:55 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 5EC6A21D7D; Thu, 2 Jan 2020 22:19:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003593; bh=7nozndicwzu6wWckXf4Hecr8ErNysisPu4jA4safFwM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QKjcKFIse87VUHJlKSXr/ZtmjSgDWxEIMADCuCWHDPXi4e4ae5cFmeG5H/0BSoZv8 mJv6aYJnXTVH3XBEikE6ymTYl/br2jgyz4sxfFchoh7SrTOP9kw4CV9jv2CHtgh0fh arNulqLm3iK9arBBPrRBxx2gefFh3kM4K1oUvLio= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, coverity-bot , James Bottomley , "Gustavo A. R. Silva" , linux-next@vger.kernel.org, "Ewan D . Milne" , Dick Kennedy , James Smart , "Martin K . Petersen" , Sasha Levin Subject: [PATCH 4.19 034/114] scsi: lpfc: fix: Coverity: lpfc_cmpl_els_rsp(): Null pointer dereferences Date: Thu, 2 Jan 2020 23:06:46 +0100 Message-Id: <20200102220032.519539423@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: James Smart [ Upstream commit 6c6d59e0fe5b86cf273d6d744a6a9768c4ecc756 ] Coverity reported the following: *** CID 101747: Null pointer dereferences (FORWARD_NULL) /drivers/scsi/lpfc/lpfc_els.c: 4439 in lpfc_cmpl_els_rsp() 4433 kfree(mp); 4434 } 4435 mempool_free(mbox, phba->mbox_mem_pool); 4436 } 4437 out: 4438 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) { vvv CID 101747: Null pointer dereferences (FORWARD_NULL) vvv Dereferencing null pointer "shost". 4439 spin_lock_irq(shost->host_lock); 4440 ndlp->nlp_flag &= ~(NLP_ACC_REGLOGIN | NLP_RM_DFLT_RPI); 4441 spin_unlock_irq(shost->host_lock); 4442 4443 /* If the node is not being used by another discovery thread, 4444 * and we are sending a reject, we are done with it. Fix by adding a check for non-null shost in line 4438. The scenario when shost is set to null is when ndlp is null. As such, the ndlp check present was sufficient. But better safe than sorry so add the shost check. Reported-by: coverity-bot Addresses-Coverity-ID: 101747 ("Null pointer dereferences") Fixes: 2e0fef85e098 ("[SCSI] lpfc: NPIV: split ports") CC: James Bottomley CC: "Gustavo A. R. Silva" CC: linux-next@vger.kernel.org Link: https://lore.kernel.org/r/20191111230401.12958-3-jsmart2021@gmail.com Reviewed-by: Ewan D. Milne Signed-off-by: Dick Kennedy Signed-off-by: James Smart Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/lpfc/lpfc_els.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c index 4f4d1b3b3bbc..7398350b08b4 100644 --- a/drivers/scsi/lpfc/lpfc_els.c +++ b/drivers/scsi/lpfc/lpfc_els.c @@ -4110,7 +4110,7 @@ lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, mempool_free(mbox, phba->mbox_mem_pool); } out: - if (ndlp && NLP_CHK_NODE_ACT(ndlp)) { + if (ndlp && NLP_CHK_NODE_ACT(ndlp) && shost) { spin_lock_irq(shost->host_lock); ndlp->nlp_flag &= ~(NLP_ACC_REGLOGIN | NLP_RM_DFLT_RPI); spin_unlock_irq(shost->host_lock); From patchwork Thu Jan 2 22:06:48 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234767 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 001B7C3276C for ; Thu, 2 Jan 2020 22:20:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C7D5421582 for ; Thu, 2 Jan 2020 22:20:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003601; bh=gkNryoQdQeCUL1UzSkod7HxNfAsDk2MseLcigk/kfgc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=2I7V38JJssu0M718pX6f1VvCjm2WkXfNrkxpVQFfzl9nBKyyEvNFMzdE5cs9uPi6a uLnrIsrbajZ9DbKE77EkYQND5I6ihHLHyaywKeGgvKX2Kl10QOHyryfg3qSbXYuSvz UI1RMwsmu5LoZyDRXcHCvFMXATyu1k9Jm3H5x4KA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727973AbgABWUA (ORCPT ); Thu, 2 Jan 2020 17:20:00 -0500 Received: from mail.kernel.org ([198.145.29.99]:36778 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728507AbgABWT7 (ORCPT ); Thu, 2 Jan 2020 17:19:59 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 371CC22314; Thu, 2 Jan 2020 22:19:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003598; bh=gkNryoQdQeCUL1UzSkod7HxNfAsDk2MseLcigk/kfgc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ad1184IXXl7pSBA1zAkq8280Ajf/Lz5ifR/sgvsYD1k0Z/wT0ULvJrOrGvV22+FUI +oGCGmNtrE5PW7qWYetSz8sHmb/u4e8dA9IsSRzlsMIljFzaA+rJ3RoiJVZQQM01Y6 VE7dRySokusgOG+xurTlJ6Dbt8NEy8s7h4OWuTdI= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Alim Akhtar , Bart Van Assche , Bean Huo , "Martin K. Petersen" , Sasha Levin Subject: [PATCH 4.19 036/114] scsi: ufs: fix potential bug which ends in system hang Date: Thu, 2 Jan 2020 23:06:48 +0100 Message-Id: <20200102220032.725515295@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Bean Huo [ Upstream commit cfcbae3895b86c390ede57b2a8f601dd5972b47b ] In function __ufshcd_query_descriptor(), in the event of an error happening, we directly goto out_unlock and forget to invaliate hba->dev_cmd.query.descriptor pointer. This results in this pointer still valid in ufshcd_copy_query_response() for other query requests which go through ufshcd_exec_raw_upiu_cmd(). This will cause __memcpy() crash and system hangs. Log as shown below: Unable to handle kernel paging request at virtual address ffff000012233c40 Mem abort info: ESR = 0x96000047 Exception class = DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 Data abort info: ISV = 0, ISS = 0x00000047 CM = 0, WnR = 1 swapper pgtable: 4k pages, 48-bit VAs, pgdp = 0000000028cc735c [ffff000012233c40] pgd=00000000bffff003, pud=00000000bfffe003, pmd=00000000ba8b8003, pte=0000000000000000 Internal error: Oops: 96000047 [#2] PREEMPT SMP ... Call trace: __memcpy+0x74/0x180 ufshcd_issue_devman_upiu_cmd+0x250/0x3c0 ufshcd_exec_raw_upiu_cmd+0xfc/0x1a8 ufs_bsg_request+0x178/0x3b0 bsg_queue_rq+0xc0/0x118 blk_mq_dispatch_rq_list+0xb0/0x538 blk_mq_sched_dispatch_requests+0x18c/0x1d8 __blk_mq_run_hw_queue+0xb4/0x118 blk_mq_run_work_fn+0x28/0x38 process_one_work+0x1ec/0x470 worker_thread+0x48/0x458 kthread+0x130/0x138 ret_from_fork+0x10/0x1c Code: 540000ab a8c12027 a88120c7 a8c12027 (a88120c7) ---[ end trace 793e1eb5dff69f2d ]--- note: kworker/0:2H[2054] exited with preempt_count 1 This patch is to move "descriptor = NULL" down to below the label "out_unlock". Fixes: d44a5f98bb49b2(ufs: query descriptor API) Link: https://lore.kernel.org/r/20191112223436.27449-3-huobean@gmail.com Reviewed-by: Alim Akhtar Reviewed-by: Bart Van Assche Signed-off-by: Bean Huo Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/ufs/ufshcd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 8bce755e0f5b..7510d8328d4d 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -3011,10 +3011,10 @@ static int __ufshcd_query_descriptor(struct ufs_hba *hba, goto out_unlock; } - hba->dev_cmd.query.descriptor = NULL; *buf_len = be16_to_cpu(response->upiu_res.length); out_unlock: + hba->dev_cmd.query.descriptor = NULL; mutex_unlock(&hba->dev_cmd.lock); out: ufshcd_release(hba); From patchwork Thu Jan 2 22:06:50 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234527 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3BF77C3276C for ; Thu, 2 Jan 2020 22:54:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 08B8620848 for ; Thu, 2 Jan 2020 22:54:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578005683; bh=QPCm10LrKqG/VbtnG/1nLj1bgWlcfYg9TRarwON8HmU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=msqOgcLpABsQWWzgHLNp6LU7gtvcCo1RA9jdIfYXRQgi3dAyWNE0L1GqABlxt7XT/ 1CtDhTyiLoo0gbF8vQuIJKzGSlQdVpyhX2FTV7EQimXNWA9JrcXnC+g6+i6D/fYaXj TKAZTUqpWMOg2QGkYb5KgYtGt2yGoLiUXOnbpUu8= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728742AbgABWUG (ORCPT ); Thu, 2 Jan 2020 17:20:06 -0500 Received: from mail.kernel.org ([198.145.29.99]:37086 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728739AbgABWUG (ORCPT ); Thu, 2 Jan 2020 17:20:06 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 668EE22314; Thu, 2 Jan 2020 22:20:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003605; bh=QPCm10LrKqG/VbtnG/1nLj1bgWlcfYg9TRarwON8HmU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WJfu6Bx3+Wb+hg96ABLmA/Pr29dgkgDfgBZ++MrvBB9ETnqMkd8QGYYNGBF1LPjQY 6cFl38fLFasAwJIF2tJu32blibOmabBzehgz3DNv2LjKErRMsd4Z705ofaQBv0br+p 11dLG1BgGnTSNKVP/0TwYUwD6pZ8ausoMaHkQSp8= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Tyrel Datwyler , Bjorn Helgaas , Michael Ellerman , Sasha Levin Subject: [PATCH 4.19 038/114] PCI: rpaphp: Dont rely on firmware feature to imply drc-info support Date: Thu, 2 Jan 2020 23:06:50 +0100 Message-Id: <20200102220032.949915815@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Tyrel Datwyler [ Upstream commit 52e2b0f16574afd082cff0f0e8567b2d9f68c033 ] In the event that the partition is migrated to a platform with older firmware that doesn't support the ibm,drc-info property the device tree is modified to remove the ibm,drc-info property and replace it with the older style ibm,drc-* properties for types, names, indexes, and power-domains. One of the requirements of the drc-info firmware feature is that the client is able to handle both the new property, and old style properties at runtime. Therefore we can't rely on the firmware feature alone to dictate which property is currently present in the device tree. Fix this short coming by checking explicitly for the ibm,drc-info property, and falling back to the older ibm,drc-* properties if it doesn't exist. Signed-off-by: Tyrel Datwyler Acked-by: Bjorn Helgaas Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/1573449697-5448-6-git-send-email-tyreld@linux.ibm.com Signed-off-by: Sasha Levin --- drivers/pci/hotplug/rpaphp_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pci/hotplug/rpaphp_core.c b/drivers/pci/hotplug/rpaphp_core.c index f56004243591..ccc6deeb9ccf 100644 --- a/drivers/pci/hotplug/rpaphp_core.c +++ b/drivers/pci/hotplug/rpaphp_core.c @@ -275,7 +275,7 @@ int rpaphp_check_drc_props(struct device_node *dn, char *drc_name, return -EINVAL; } - if (firmware_has_feature(FW_FEATURE_DRC_INFO)) + if (of_find_property(dn->parent, "ibm,drc-info", NULL)) return rpaphp_check_drc_props_v2(dn, drc_name, drc_type, *my_index); else From patchwork Thu Jan 2 22:06:51 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234766 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 89C0DC3276C for ; Thu, 2 Jan 2020 22:20:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5AF4021D7D for ; Thu, 2 Jan 2020 22:20:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003611; bh=2idXf988AH2BgbA+RFheSDzupFk2EiecZ2E97rSpuo8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=c+A9aFJ/ibbdOrClhniKacuuyWgtBQLzrjLruUT5MtfB1Hiln2IIUKt1ig4MUFCBB AllM0Agry1+kUZuuKKhwPMFA2UlFCE8alagvBJ5pOg35awsfGSrXe3CQIJZQsMy2an eaUtFPNcbAgw20rSFHHB8QgCrPesYy+652eG4i7c= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728750AbgABWUJ (ORCPT ); Thu, 2 Jan 2020 17:20:09 -0500 Received: from mail.kernel.org ([198.145.29.99]:37216 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728739AbgABWUJ (ORCPT ); Thu, 2 Jan 2020 17:20:09 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id C119B22525; Thu, 2 Jan 2020 22:20:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003608; bh=2idXf988AH2BgbA+RFheSDzupFk2EiecZ2E97rSpuo8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=loTBqxV+lZNaQ02NxzR7DTN/WWQnHiEjPOPVbiDvj+9NHx+7UBlREHn6/EVbbLWex 2KpXCdYc4gqpiqp+K6eGdraLD2Kp7tXpW4ps8tnNAMkfc+HZZUXhjcsNyunVGWWAuQ PN/lEKlFti6INtVtHZsQWhtxlDFXJg4q1RayOVhY= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Tyrel Datwyler , Bjorn Helgaas , Michael Ellerman , Sasha Levin Subject: [PATCH 4.19 039/114] PCI: rpaphp: Annotate and correctly byte swap DRC properties Date: Thu, 2 Jan 2020 23:06:51 +0100 Message-Id: <20200102220033.048120228@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Tyrel Datwyler [ Upstream commit 0737686778c6dbe0908d684dd5b9c05b127526ba ] The device tree is in big endian format and any properties directly retrieved using OF helpers that don't explicitly byte swap should be annotated. In particular there are several places where we grab the opaque property value for the old ibm,drc-* properties and the ibm,my-drc-index property. Fix this for better static checking by annotating values we know to explicitly big endian, and byte swap where appropriate. Signed-off-by: Tyrel Datwyler Acked-by: Bjorn Helgaas Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/1573449697-5448-9-git-send-email-tyreld@linux.ibm.com Signed-off-by: Sasha Levin --- drivers/pci/hotplug/rpaphp_core.c | 29 +++++++++++++++-------------- 1 file changed, 15 insertions(+), 14 deletions(-) diff --git a/drivers/pci/hotplug/rpaphp_core.c b/drivers/pci/hotplug/rpaphp_core.c index ccc6deeb9ccf..7d74fe875225 100644 --- a/drivers/pci/hotplug/rpaphp_core.c +++ b/drivers/pci/hotplug/rpaphp_core.c @@ -154,11 +154,11 @@ static enum pci_bus_speed get_max_bus_speed(struct slot *slot) return speed; } -static int get_children_props(struct device_node *dn, const int **drc_indexes, - const int **drc_names, const int **drc_types, - const int **drc_power_domains) +static int get_children_props(struct device_node *dn, const __be32 **drc_indexes, + const __be32 **drc_names, const __be32 **drc_types, + const __be32 **drc_power_domains) { - const int *indexes, *names, *types, *domains; + const __be32 *indexes, *names, *types, *domains; indexes = of_get_property(dn, "ibm,drc-indexes", NULL); names = of_get_property(dn, "ibm,drc-names", NULL); @@ -194,8 +194,8 @@ static int rpaphp_check_drc_props_v1(struct device_node *dn, char *drc_name, char *drc_type, unsigned int my_index) { char *name_tmp, *type_tmp; - const int *indexes, *names; - const int *types, *domains; + const __be32 *indexes, *names; + const __be32 *types, *domains; int i, rc; rc = get_children_props(dn->parent, &indexes, &names, &types, &domains); @@ -208,7 +208,7 @@ static int rpaphp_check_drc_props_v1(struct device_node *dn, char *drc_name, /* Iterate through parent properties, looking for my-drc-index */ for (i = 0; i < be32_to_cpu(indexes[0]); i++) { - if ((unsigned int) indexes[i + 1] == my_index) + if (be32_to_cpu(indexes[i + 1]) == my_index) break; name_tmp += (strlen(name_tmp) + 1); @@ -267,7 +267,7 @@ static int rpaphp_check_drc_props_v2(struct device_node *dn, char *drc_name, int rpaphp_check_drc_props(struct device_node *dn, char *drc_name, char *drc_type) { - const unsigned int *my_index; + const __be32 *my_index; my_index = of_get_property(dn, "ibm,my-drc-index", NULL); if (!my_index) { @@ -277,10 +277,10 @@ int rpaphp_check_drc_props(struct device_node *dn, char *drc_name, if (of_find_property(dn->parent, "ibm,drc-info", NULL)) return rpaphp_check_drc_props_v2(dn, drc_name, drc_type, - *my_index); + be32_to_cpu(*my_index)); else return rpaphp_check_drc_props_v1(dn, drc_name, drc_type, - *my_index); + be32_to_cpu(*my_index)); } EXPORT_SYMBOL_GPL(rpaphp_check_drc_props); @@ -311,10 +311,11 @@ static int is_php_type(char *drc_type) * for built-in pci slots (even when the built-in slots are * dlparable.) */ -static int is_php_dn(struct device_node *dn, const int **indexes, - const int **names, const int **types, const int **power_domains) +static int is_php_dn(struct device_node *dn, const __be32 **indexes, + const __be32 **names, const __be32 **types, + const __be32 **power_domains) { - const int *drc_types; + const __be32 *drc_types; int rc; rc = get_children_props(dn, indexes, names, &drc_types, power_domains); @@ -349,7 +350,7 @@ int rpaphp_add_slot(struct device_node *dn) struct slot *slot; int retval = 0; int i; - const int *indexes, *names, *types, *power_domains; + const __be32 *indexes, *names, *types, *power_domains; char *name, *type; if (!dn->name || strcmp(dn->name, "pci")) From patchwork Thu Jan 2 22:06:52 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234528 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 49EBBC3276C for ; Thu, 2 Jan 2020 22:54:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 20A8820848 for ; Thu, 2 Jan 2020 22:54:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578005681; bh=BmOf4eX506gey7d/fY6qrWHZaCqMP9oFOn8fOgVOkiQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=K6ig8MhYONlrKQUjE890kW8MounSF8BEya4f6d5J2szojkf5rKUM+d4BGF0xh/fpP FCb6Xnc3E7r/i2g43mTU4Vvhs7qzopkMzJRGCsabmA5ijrQCAYgS89aR/wbt5TpHLj R4OLPdzqRx771CWHAPN4fOHYjPJReL+4dI5XZDUI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728558AbgABWUX (ORCPT ); Thu, 2 Jan 2020 17:20:23 -0500 Received: from mail.kernel.org ([198.145.29.99]:37316 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728053AbgABWUL (ORCPT ); Thu, 2 Jan 2020 17:20:11 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 42AC621582; Thu, 2 Jan 2020 22:20:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003610; bh=BmOf4eX506gey7d/fY6qrWHZaCqMP9oFOn8fOgVOkiQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=H6J/FSYmlmnfmqUnhUOVmR+CFm5ElRIZSslti9VNotY3AWZa8vnCoeJL16uwEJsPh onuLbmkoUGzXQRba95FGXNfbOvvqjUvF6JRuiiyNJ84nsP42/+vk/4E3NC4gSeBdAF W92xNhXMYPfzG+CAAj3sKsCZtVeNyAjjoA/bX6mA= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Tyrel Datwyler , Bjorn Helgaas , Michael Ellerman , Sasha Levin Subject: [PATCH 4.19 040/114] PCI: rpaphp: Correctly match ibm, my-drc-index to drc-name when using drc-info Date: Thu, 2 Jan 2020 23:06:52 +0100 Message-Id: <20200102220033.132193106@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Tyrel Datwyler [ Upstream commit 4f9f2d3d7a434b7f882b72550194c9278f4a3925 ] The newer ibm,drc-info property is a condensed description of the old ibm,drc-* properties (ie. names, types, indexes, and power-domains). When matching a drc-index to a drc-name we need to verify that the index is within the start and last drc-index range and map it to a drc-name using the drc-name-prefix and logical index. Fix the mapping by checking that the index is within the range of the current drc-info entry, and build the name from the drc-name-prefix concatenated with the starting drc-name-suffix value and the sequential index obtained by subtracting ibm,my-drc-index from this entries drc-start-index. Signed-off-by: Tyrel Datwyler Acked-by: Bjorn Helgaas Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/1573449697-5448-10-git-send-email-tyreld@linux.ibm.com Signed-off-by: Sasha Levin --- drivers/pci/hotplug/rpaphp_core.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/pci/hotplug/rpaphp_core.c b/drivers/pci/hotplug/rpaphp_core.c index 7d74fe875225..a306cad70470 100644 --- a/drivers/pci/hotplug/rpaphp_core.c +++ b/drivers/pci/hotplug/rpaphp_core.c @@ -248,9 +248,10 @@ static int rpaphp_check_drc_props_v2(struct device_node *dn, char *drc_name, /* Should now know end of current entry */ /* Found it */ - if (my_index <= drc.last_drc_index) { + if (my_index >= drc.drc_index_start && my_index <= drc.last_drc_index) { + int index = my_index - drc.drc_index_start; sprintf(cell_drc_name, "%s%d", drc.drc_name_prefix, - my_index); + drc.drc_name_suffix_start + index); break; } } From patchwork Thu Jan 2 22:06:54 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234765 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CBAE0C3276C for ; Thu, 2 Jan 2020 22:20:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A0D7A24649 for ; Thu, 2 Jan 2020 22:20:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003623; bh=yKkqklTu0KqKdIi0+DO0w17GMhzpkdxawGPnTiAINAk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=rTExS+r+5FHtyiVU+XymJxifwOCHdOU13bG/QbM/WevetIRFmMM//0P/1uqQIZ70X hxgEQpdUacaF9DslKb9otfJch8FUIFFIEtpwBUhcn3PcfG4EMRdkMVvLWyoM6vWS1m spCjsuJgLyuARvmsxV8wro9TvWYQ4OiXwb6y9FcY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728435AbgABWUS (ORCPT ); Thu, 2 Jan 2020 17:20:18 -0500 Received: from mail.kernel.org ([198.145.29.99]:37504 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728434AbgABWUQ (ORCPT ); Thu, 2 Jan 2020 17:20:16 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 1D7E32464B; Thu, 2 Jan 2020 22:20:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003615; bh=yKkqklTu0KqKdIi0+DO0w17GMhzpkdxawGPnTiAINAk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RsAGljg4WL5HisOa9jg03oYp227DLYUULfKJgKuPWpZFsSr2T/T17m/052sCntdi2 8LgnPr5HJuWIFdxIUrto1TY45kMYqLx3ClEGVlBjl8hsU/wa4wDWZ4VssQL1wz8vlg v9VwGYqVtL/ZmdM8yf8qFS2JNP/S6k7VXiGSwLFo= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Michael Schmitz , Finn Thain , "Martin K. Petersen" , Sasha Levin Subject: [PATCH 4.19 042/114] scsi: atari_scsi: sun3_scsi: Set sg_tablesize to 1 instead of SG_NONE Date: Thu, 2 Jan 2020 23:06:54 +0100 Message-Id: <20200102220033.365549291@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Finn Thain [ Upstream commit 79172ab20bfd8437b277254028efdb68484e2c21 ] Since the scsi subsystem adopted the blk-mq API, a host with zero sg_tablesize crashes with a NULL pointer dereference. blk_queue_max_segments: set to minimum 1 scsi 0:0:0:0: Direct-Access QEMU QEMU HARDDISK 2.5+ PQ: 0 ANSI: 5 scsi target0:0:0: Beginning Domain Validation scsi target0:0:0: Domain Validation skipping write tests scsi target0:0:0: Ending Domain Validation blk_queue_max_segments: set to minimum 1 scsi 0:0:1:0: Direct-Access QEMU QEMU HARDDISK 2.5+ PQ: 0 ANSI: 5 scsi target0:0:1: Beginning Domain Validation scsi target0:0:1: Domain Validation skipping write tests scsi target0:0:1: Ending Domain Validation blk_queue_max_segments: set to minimum 1 scsi 0:0:2:0: CD-ROM QEMU QEMU CD-ROM 2.5+ PQ: 0 ANSI: 5 scsi target0:0:2: Beginning Domain Validation scsi target0:0:2: Domain Validation skipping write tests scsi target0:0:2: Ending Domain Validation blk_queue_max_segments: set to minimum 1 blk_queue_max_segments: set to minimum 1 blk_queue_max_segments: set to minimum 1 blk_queue_max_segments: set to minimum 1 sr 0:0:2:0: Power-on or device reset occurred sd 0:0:0:0: Power-on or device reset occurred sd 0:0:1:0: Power-on or device reset occurred sd 0:0:0:0: [sda] 10485762 512-byte logical blocks: (5.37 GB/5.00 GiB) sd 0:0:0:0: [sda] Write Protect is off sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA Unable to handle kernel NULL pointer dereference at virtual address (ptrval) Oops: 00000000 Modules linked in: PC: [<001cd874>] blk_mq_free_request+0x66/0xe2 SR: 2004 SP: (ptrval) a2: 00874520 d0: 00000000 d1: 00000000 d2: 009ba800 d3: 00000000 d4: 00000000 d5: 08000002 a0: 0087be68 a1: 009a81e0 Process kworker/u2:2 (pid: 15, task=(ptrval)) Frame format=7 eff addr=0000007a ssw=0505 faddr=0000007a wb 1 stat/addr/data: 0000 00000000 00000000 wb 2 stat/addr/data: 0000 00000000 00000000 wb 3 stat/addr/data: 0000 0000007a 00000000 push data: 00000000 00000000 00000000 00000000 Stack from 0087bd98: 00000002 00000000 0087be72 009a7820 0087bdb4 001c4f6c 009a7820 0087bdd4 0024d200 009a7820 0024d0dc 0087be72 009baa00 0087be68 009a5000 0087be7c 00265d10 009a5000 0087be72 00000003 00000000 00000000 00000000 0087be68 00000bb8 00000005 00000000 00000000 00000000 00000000 00265c56 00000000 009ba60c 0036ddf4 00000002 ffffffff 009baa00 009ba600 009a50d6 0087be74 00227ba0 009baa08 00000001 009baa08 009ba60c 0036ddf4 00000000 00000000 Call Trace: [<001c4f6c>] blk_put_request+0xe/0x14 [<0024d200>] __scsi_execute+0x124/0x174 [<0024d0dc>] __scsi_execute+0x0/0x174 [<00265d10>] sd_revalidate_disk+0xba/0x1f02 [<00265c56>] sd_revalidate_disk+0x0/0x1f02 [<0036ddf4>] strlen+0x0/0x22 [<00227ba0>] device_add+0x3da/0x604 [<0036ddf4>] strlen+0x0/0x22 [<00267e64>] sd_probe+0x30c/0x4b4 [<0002da44>] process_one_work+0x0/0x402 [<0022b978>] really_probe+0x226/0x354 [<0022bc34>] driver_probe_device+0xa4/0xf0 [<0002da44>] process_one_work+0x0/0x402 [<0022bcd0>] __driver_attach_async_helper+0x50/0x70 [<00035dae>] async_run_entry_fn+0x36/0x130 [<0002db88>] process_one_work+0x144/0x402 [<0002e1aa>] worker_thread+0x0/0x570 [<0002e29a>] worker_thread+0xf0/0x570 [<0002e1aa>] worker_thread+0x0/0x570 [<003768d8>] schedule+0x0/0xb8 [<0003f58c>] __init_waitqueue_head+0x0/0x12 [<00033e92>] kthread+0xc2/0xf6 [<000331e8>] kthread_parkme+0x0/0x4e [<003768d8>] schedule+0x0/0xb8 [<00033dd0>] kthread+0x0/0xf6 [<00002c10>] ret_from_kernel_thread+0xc/0x14 Code: 0280 0006 0800 56c0 4400 0280 0000 00ff <52b4> 0c3a 082b 0006 0013 6706 2042 53a8 00c4 4ab9 0047 3374 6640 202d 000c 670c Disabling lock debugging due to kernel taint Avoid this by setting sg_tablesize = 1. Link: https://lore.kernel.org/r/4567bcae94523b47d6f3b77450ba305823bca479.1572656814.git.fthain@telegraphics.com.au Reported-and-tested-by: Michael Schmitz Reviewed-by: Michael Schmitz Signed-off-by: Finn Thain Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/atari_scsi.c | 6 +++--- drivers/scsi/mac_scsi.c | 2 +- drivers/scsi/sun3_scsi.c | 4 ++-- 3 files changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/scsi/atari_scsi.c b/drivers/scsi/atari_scsi.c index 89f5154c40b6..764c46d7333e 100644 --- a/drivers/scsi/atari_scsi.c +++ b/drivers/scsi/atari_scsi.c @@ -742,7 +742,7 @@ static int __init atari_scsi_probe(struct platform_device *pdev) atari_scsi_template.sg_tablesize = SG_ALL; } else { atari_scsi_template.can_queue = 1; - atari_scsi_template.sg_tablesize = SG_NONE; + atari_scsi_template.sg_tablesize = 1; } if (setup_can_queue > 0) @@ -751,8 +751,8 @@ static int __init atari_scsi_probe(struct platform_device *pdev) if (setup_cmd_per_lun > 0) atari_scsi_template.cmd_per_lun = setup_cmd_per_lun; - /* Leave sg_tablesize at 0 on a Falcon! */ - if (ATARIHW_PRESENT(TT_SCSI) && setup_sg_tablesize >= 0) + /* Don't increase sg_tablesize on Falcon! */ + if (ATARIHW_PRESENT(TT_SCSI) && setup_sg_tablesize > 0) atari_scsi_template.sg_tablesize = setup_sg_tablesize; if (setup_hostid >= 0) { diff --git a/drivers/scsi/mac_scsi.c b/drivers/scsi/mac_scsi.c index 643321fc152d..b5050c2ede00 100644 --- a/drivers/scsi/mac_scsi.c +++ b/drivers/scsi/mac_scsi.c @@ -429,7 +429,7 @@ static int __init mac_scsi_probe(struct platform_device *pdev) mac_scsi_template.can_queue = setup_can_queue; if (setup_cmd_per_lun > 0) mac_scsi_template.cmd_per_lun = setup_cmd_per_lun; - if (setup_sg_tablesize >= 0) + if (setup_sg_tablesize > 0) mac_scsi_template.sg_tablesize = setup_sg_tablesize; if (setup_hostid >= 0) mac_scsi_template.this_id = setup_hostid & 7; diff --git a/drivers/scsi/sun3_scsi.c b/drivers/scsi/sun3_scsi.c index 9492638296c8..af8a7ef9c858 100644 --- a/drivers/scsi/sun3_scsi.c +++ b/drivers/scsi/sun3_scsi.c @@ -498,7 +498,7 @@ static struct scsi_host_template sun3_scsi_template = { .eh_host_reset_handler = sun3scsi_host_reset, .can_queue = 16, .this_id = 7, - .sg_tablesize = SG_NONE, + .sg_tablesize = 1, .cmd_per_lun = 2, .use_clustering = DISABLE_CLUSTERING, .cmd_size = NCR5380_CMD_SIZE, @@ -520,7 +520,7 @@ static int __init sun3_scsi_probe(struct platform_device *pdev) sun3_scsi_template.can_queue = setup_can_queue; if (setup_cmd_per_lun > 0) sun3_scsi_template.cmd_per_lun = setup_cmd_per_lun; - if (setup_sg_tablesize >= 0) + if (setup_sg_tablesize > 0) sun3_scsi_template.sg_tablesize = setup_sg_tablesize; if (setup_hostid >= 0) sun3_scsi_template.this_id = setup_hostid & 7; From patchwork Thu Jan 2 22:06:56 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234526 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5F28AC3276D for ; Thu, 2 Jan 2020 22:54:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 28A9620848 for ; Thu, 2 Jan 2020 22:54:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578005684; bh=X+Do8u5S6VNWIX901s2stI315wdsbjiGl6J8hVjzR6A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=d7bL2U1g/EdTNm4YA/FXBtqHEYTGj6M59cxmzWdLzCIkxBEesgK9ooTn/tIp2NdII pkEy8UiiSp6yV8VYb51tcDPpmpj06CYEmUzipzW3t8k73wdgJVXOR9IOh+aihtr99S wiJhx5qOrtj1o0szQGfSjsvZ6nT6pR9gtu+VI57k= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728578AbgABWym (ORCPT ); Thu, 2 Jan 2020 17:54:42 -0500 Received: from mail.kernel.org ([198.145.29.99]:37672 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728287AbgABWUV (ORCPT ); Thu, 2 Jan 2020 17:20:21 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E32692253D; Thu, 2 Jan 2020 22:20:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003620; bh=X+Do8u5S6VNWIX901s2stI315wdsbjiGl6J8hVjzR6A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kyPrkMmWqLvNC/AVRakl0cvVPcOpizbFeR0/cF+FvCVKSvgfkSuGMs8ox39fz/Dbi ZTfdJ7NMpVxUyeg+bZ0SJY8Z7UuDhdFnTrVMjafzXpeURPesCbZxLpOj0QpEbvB6dX wwvGgQYW5om0ECh114vGVIFaVc0OxIEySxnCYDcc= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Coly Li , Jens Axboe , Sasha Levin Subject: [PATCH 4.19 044/114] bcache: at least try to shrink 1 node in bch_mca_scan() Date: Thu, 2 Jan 2020 23:06:56 +0100 Message-Id: <20200102220033.534038277@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Coly Li [ Upstream commit 9fcc34b1a6dd4b8e5337e2b6ef45e428897eca6b ] In bch_mca_scan(), the number of shrinking btree node is calculated by code like this, unsigned long nr = sc->nr_to_scan; nr /= c->btree_pages; nr = min_t(unsigned long, nr, mca_can_free(c)); variable sc->nr_to_scan is number of objects (here is bcache B+tree nodes' number) to shrink, and pointer variable sc is sent from memory management code as parametr of a callback. If sc->nr_to_scan is smaller than c->btree_pages, after the above calculation, variable 'nr' will be 0 and nothing will be shrunk. It is frequeently observed that only 1 or 2 is set to sc->nr_to_scan and make nr to be zero. Then bch_mca_scan() will do nothing more then acquiring and releasing mutex c->bucket_lock. This patch checkes whether nr is 0 after the above calculation, if 0 is the result then set 1 to variable 'n'. Then at least bch_mca_scan() will try to shrink a single B+tree node. Signed-off-by: Coly Li Signed-off-by: Jens Axboe Signed-off-by: Sasha Levin --- drivers/md/bcache/btree.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/md/bcache/btree.c b/drivers/md/bcache/btree.c index 45f684689c35..bb40bd66a10e 100644 --- a/drivers/md/bcache/btree.c +++ b/drivers/md/bcache/btree.c @@ -713,6 +713,8 @@ static unsigned long bch_mca_scan(struct shrinker *shrink, * IO can always make forward progress: */ nr /= c->btree_pages; + if (nr == 0) + nr = 1; nr = min_t(unsigned long, nr, mca_can_free(c)); i = 0; From patchwork Thu Jan 2 22:06:58 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234758 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DA1F0C3276F for ; Thu, 2 Jan 2020 22:21:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A416B20863 for ; Thu, 2 Jan 2020 22:21:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003706; bh=IMnRsSSckyMOsSAOuTqewPq4T1YIvHzAbfUt8u6pdeo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ObEa7Jp7cKmmxUioE3meX5Ix5qAIYphae7r/5DUXSeFnVZ+YPai2DRY0wyz6HCaDp tFaLA2E9DZSTvbpYvN7AbEG/E3EDj8z1E9Hgttpe6RgyYQ5wux+ER4Fh52WwdMIEQC fHRHpof6k+XOwap/mVBZHolvaYOoGJdlxqZ05P68= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728838AbgABWVp (ORCPT ); Thu, 2 Jan 2020 17:21:45 -0500 Received: from mail.kernel.org ([198.145.29.99]:41292 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728549AbgABWVo (ORCPT ); Thu, 2 Jan 2020 17:21:44 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id AA5E520863; Thu, 2 Jan 2020 22:21:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003704; bh=IMnRsSSckyMOsSAOuTqewPq4T1YIvHzAbfUt8u6pdeo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KwXloE12DRKMzD4hDy+CSzS2w1lcbs7h7QcLaHqhdsqvmkjYde0Yc7cgjSb5hNIHP groPbA9YZAb2k/865zWKQASXH1NVyO8zMXuo0lXN1D5jq5WT1+MWue4Ac9BI9XxC+P wtzpbZ2eyVAMzJ5N0s+GPjnR4rKn3LGD4SurC1jA= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Hans de Goede , Jiri Kosina , Sasha Levin Subject: [PATCH 4.19 046/114] HID: logitech-hidpp: Silence intermittent get_battery_capacity errors Date: Thu, 2 Jan 2020 23:06:58 +0100 Message-Id: <20200102220033.733967047@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Hans de Goede [ Upstream commit 61005d65b6c7dcf61c19516e6ebe5acc02d2cdda ] My Logitech M185 (PID:4038) 2.4 GHz wireless HID++ mouse is causing intermittent errors like these in the log: [11091.034857] logitech-hidpp-device 0003:046D:4038.0006: hidpp20_batterylevel_get_battery_capacity: received protocol error 0x09 [12388.031260] logitech-hidpp-device 0003:046D:4038.0006: hidpp20_batterylevel_get_battery_capacity: received protocol error 0x09 [16613.718543] logitech-hidpp-device 0003:046D:4038.0006: hidpp20_batterylevel_get_battery_capacity: received protocol error 0x09 [23529.938728] logitech-hidpp-device 0003:046D:4038.0006: hidpp20_batterylevel_get_battery_capacity: received protocol error 0x09 We are already silencing error-code 0x09 (HIDPP_ERROR_RESOURCE_ERROR) errors in other places, lets do the same in hidpp20_batterylevel_get_battery_capacity to remove these harmless, but scary looking errors from the dmesg output. Signed-off-by: Hans de Goede Signed-off-by: Jiri Kosina Signed-off-by: Sasha Levin --- drivers/hid/hid-logitech-hidpp.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c index 034c883e57fa..504e8917b06f 100644 --- a/drivers/hid/hid-logitech-hidpp.c +++ b/drivers/hid/hid-logitech-hidpp.c @@ -978,6 +978,9 @@ static int hidpp20_batterylevel_get_battery_capacity(struct hidpp_device *hidpp, ret = hidpp_send_fap_command_sync(hidpp, feature_index, CMD_BATTERY_LEVEL_STATUS_GET_BATTERY_LEVEL_STATUS, NULL, 0, &response); + /* Ignore these intermittent errors */ + if (ret == HIDPP_ERROR_RESOURCE_ERROR) + return -EIO; if (ret > 0) { hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n", __func__, ret); From patchwork Thu Jan 2 22:06:59 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234531 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DE359C3276C for ; Thu, 2 Jan 2020 22:54:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A9BD4222C3 for ; Thu, 2 Jan 2020 22:54:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578005660; bh=ep9gLDaU4fQuW4s5VjCKlb/xQtq90DV88lZZIOURVh0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=unDMJojSVjHNs5do4dDljfMvaaLhD/EeIG07sLyeAdBTvz35P7x9h2Zogl5ViV4a4 k1iAN0AxEqb7S5pea3gbt958sO334XOsjU07thxXBKc5x2e+Bcx8ooT7hYLOQ/FET4 cxBq1I427sGsev3CIkEQMAeXzawsBZ13ygUfLnJk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728118AbgABWUp (ORCPT ); Thu, 2 Jan 2020 17:20:45 -0500 Received: from mail.kernel.org ([198.145.29.99]:38776 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728864AbgABWUo (ORCPT ); Thu, 2 Jan 2020 17:20:44 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id D90F624650; Thu, 2 Jan 2020 22:20:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003644; bh=ep9gLDaU4fQuW4s5VjCKlb/xQtq90DV88lZZIOURVh0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=uTSPwpC6T12g8zgK1Qtb098eeyviwPbE0lIx4R6YeBt+4JpoJ9g9UHtffclnfg2ZD cWCU5pfVUMI+ZsluNq8hsdV7uCab4NE9MdMn0qihjsaJvQaIvh9kQjNpzz8+IX5lJx uaZ0R/kB7j0JodoogVyla4u5sg0mwQ3zp2VMC0a4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Doug Berger , Florian Fainelli , Russell King , Sasha Levin Subject: [PATCH 4.19 047/114] ARM: 8937/1: spectre-v2: remove Brahma-B53 from hardening Date: Thu, 2 Jan 2020 23:06:59 +0100 Message-Id: <20200102220033.831569340@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Doug Berger [ Upstream commit 4ae5061a19b550dfe25397843427ed2ebab16b16 ] When the default processor handling was added to the function cpu_v7_spectre_init() it only excluded other ARM implemented processor cores. The Broadcom Brahma B53 core is not implemented by ARM so it ended up falling through into the set of processors that attempt to use the ARM_SMCCC_ARCH_WORKAROUND_1 service to harden the branch predictor. Since this workaround is not necessary for the Brahma-B53 this commit explicitly checks for it and prevents it from applying a branch predictor hardening workaround. Fixes: 10115105cb3a ("ARM: spectre-v2: add firmware based hardening") Signed-off-by: Doug Berger Signed-off-by: Florian Fainelli Signed-off-by: Russell King Signed-off-by: Sasha Levin --- arch/arm/mm/proc-v7-bugs.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm/mm/proc-v7-bugs.c b/arch/arm/mm/proc-v7-bugs.c index 9a07916af8dd..a6554fdb56c5 100644 --- a/arch/arm/mm/proc-v7-bugs.c +++ b/arch/arm/mm/proc-v7-bugs.c @@ -65,6 +65,9 @@ static void cpu_v7_spectre_init(void) break; #ifdef CONFIG_ARM_PSCI + case ARM_CPU_PART_BRAHMA_B53: + /* Requires no workaround */ + break; default: /* Other ARM CPUs require no workaround */ if (read_cpuid_implementor() == ARM_CPU_IMP_ARM) From patchwork Thu Jan 2 22:07:01 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234760 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0FD72C3276E for ; Thu, 2 Jan 2020 22:21:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D9EB624650 for ; Thu, 2 Jan 2020 22:21:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003689; bh=L1eRcQZCIbPpjbfa3ub2lWJDnPPPqYK93Pv7mxJolxE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=WVjJqErAewoVSnSSWbZ4uIzZrtKSsYO9sZkPNPOlxpC4ZKSkEqkB5vpBJBMPRZq0U jXBWuvmZc+VvRYEtaQPAaWvwXzaaJp0IwzUeznfNyZxAs8ZQa2IaBt3irztjOMHL2w ApukxIBGP10g/geH7fPWBosrEApo8Ngfy5TlO+hk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728341AbgABWV2 (ORCPT ); Thu, 2 Jan 2020 17:21:28 -0500 Received: from mail.kernel.org ([198.145.29.99]:40556 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728990AbgABWV2 (ORCPT ); Thu, 2 Jan 2020 17:21:28 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id CEA032253D; Thu, 2 Jan 2020 22:21:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003687; bh=L1eRcQZCIbPpjbfa3ub2lWJDnPPPqYK93Pv7mxJolxE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KNC3DJ8DpVF8AzOnDooiJIYKr3JDWPp3WuaKCC+OFVx3LyuMhOQXmK7U1c17GSlJ1 TUsdviE4cFp4Ptwaa/LhtnaZ+sNOmJaYoyOAhD+5JZo5r/aWooLpdv7IOz+U/GRSFD n10R+xNS8l/yH69cdrl4V4bWrggFu9bm7Eeor7yY= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, =?utf-8?q?Bla=C5=BE_Hrastnik?= , Benjamin Tissoires , Sasha Levin Subject: [PATCH 4.19 049/114] HID: Improve Windows Precision Touchpad detection. Date: Thu, 2 Jan 2020 23:07:01 +0100 Message-Id: <20200102220034.018208756@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Blaž Hrastnik [ Upstream commit 2dbc6f113acd74c66b04bf49fb027efd830b1c5a ] Per Microsoft spec, usage 0xC5 (page 0xFF) returns a blob containing data used to verify the touchpad as a Windows Precision Touchpad. 0x85, REPORTID_PTPHQA, // REPORT_ID (PTPHQA) 0x09, 0xC5, // USAGE (Vendor Usage 0xC5) 0x15, 0x00, // LOGICAL_MINIMUM (0) 0x26, 0xff, 0x00, // LOGICAL_MAXIMUM (0xff) 0x75, 0x08, // REPORT_SIZE (8) 0x96, 0x00, 0x01, // REPORT_COUNT (0x100 (256)) 0xb1, 0x02, // FEATURE (Data,Var,Abs) However, some devices, namely Microsoft's Surface line of products instead implement a "segmented device certification report" (usage 0xC6) which returns the same report, but in smaller chunks. 0x06, 0x00, 0xff, // USAGE_PAGE (Vendor Defined) 0x85, REPORTID_PTPHQA, // REPORT_ID (PTPHQA) 0x09, 0xC6, // USAGE (Vendor usage for segment #) 0x25, 0x08, // LOGICAL_MAXIMUM (8) 0x75, 0x08, // REPORT_SIZE (8) 0x95, 0x01, // REPORT_COUNT (1) 0xb1, 0x02, // FEATURE (Data,Var,Abs) 0x09, 0xC7, // USAGE (Vendor Usage) 0x26, 0xff, 0x00, // LOGICAL_MAXIMUM (0xff) 0x95, 0x20, // REPORT_COUNT (32) 0xb1, 0x02, // FEATURE (Data,Var,Abs) By expanding Win8 touchpad detection to also look for the segmented report, all Surface touchpads are now properly recognized by hid-multitouch. Signed-off-by: Blaž Hrastnik Signed-off-by: Benjamin Tissoires Signed-off-by: Sasha Levin --- drivers/hid/hid-core.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c index b0c8fae7f903..3a359716fb38 100644 --- a/drivers/hid/hid-core.c +++ b/drivers/hid/hid-core.c @@ -780,6 +780,10 @@ static void hid_scan_feature_usage(struct hid_parser *parser, u32 usage) if (usage == 0xff0000c5 && parser->global.report_count == 256 && parser->global.report_size == 8) parser->scan_flags |= HID_SCAN_FLAG_MT_WIN_8; + + if (usage == 0xff0000c6 && parser->global.report_count == 1 && + parser->global.report_size == 8) + parser->scan_flags |= HID_SCAN_FLAG_MT_WIN_8; } static void hid_scan_collection(struct hid_parser *parser, unsigned type) From patchwork Thu Jan 2 22:07:02 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234538 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C5B34C3276C for ; Thu, 2 Jan 2020 22:53:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8F4BB21835 for ; Thu, 2 Jan 2020 22:53:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578005624; bh=m8NzCf4h3abOp3hDf9o8iWYgiZUZgDJEXB9aJ8CE73k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ZZwaDxiEy7Lw3G5eXpgU6SwxQIkzUj8JK7RBX7d8btsfCGlYfpCBpIlIqcInqj93N zQ21PqDV4IPGlPweIml1OP25pXPac9vKMkSYq5ME6pKZ+/u5YtEpPzyQ86aQndU/yU JfZPsJbIh03tcRr9gwISGfIb+MN449ENiunC5zvc= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728996AbgABWVa (ORCPT ); Thu, 2 Jan 2020 17:21:30 -0500 Received: from mail.kernel.org ([198.145.29.99]:40658 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728612AbgABWVa (ORCPT ); Thu, 2 Jan 2020 17:21:30 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 3676124125; Thu, 2 Jan 2020 22:21:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003689; bh=m8NzCf4h3abOp3hDf9o8iWYgiZUZgDJEXB9aJ8CE73k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=oXDCeyyfP4sunWqxOVSo8UVt1u7vJRmb2vWHwqpyT5Av4KBH2zdfRsoZkzot1Zn3w M/XEfyR1PX7p3FOPOPqOjRtNpk3TSVityU1MEFaQ1dwmwv0nzaE9sFuesioP6pA3ZR gwZGbMpDJbzhJzZpz9d/8F6wl+D6q7SHinAmo4cU= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Andrew Duggan , Federico Cerutti , Jiri Kosina , Sasha Levin Subject: [PATCH 4.19 050/114] HID: rmi: Check that the RMI_STARTED bit is set before unregistering the RMI transport device Date: Thu, 2 Jan 2020 23:07:02 +0100 Message-Id: <20200102220034.117368636@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Andrew Duggan [ Upstream commit 8725aa4fa7ded30211ebd28bb1c9bae806eb3841 ] In the event that the RMI device is unreachable, the calls to rmi_set_mode() or rmi_set_page() will fail before registering the RMI transport device. When the device is removed, rmi_remove() will call rmi_unregister_transport_device() which will attempt to access the rmi_dev pointer which was not set. This patch adds a check of the RMI_STARTED bit before calling rmi_unregister_transport_device(). The RMI_STARTED bit is only set after rmi_register_transport_device() completes successfully. The kernel oops was reported in this message: https://www.spinics.net/lists/linux-input/msg58433.html [jkosina@suse.cz: reworded changelog as agreed with Andrew] Signed-off-by: Andrew Duggan Reported-by: Federico Cerutti Signed-off-by: Jiri Kosina Signed-off-by: Sasha Levin --- drivers/hid/hid-rmi.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/hid/hid-rmi.c b/drivers/hid/hid-rmi.c index 9e33165250a3..a5b6b2be9cda 100644 --- a/drivers/hid/hid-rmi.c +++ b/drivers/hid/hid-rmi.c @@ -737,7 +737,8 @@ static void rmi_remove(struct hid_device *hdev) { struct rmi_data *hdata = hid_get_drvdata(hdev); - if (hdata->device_flags & RMI_DEVICE) { + if ((hdata->device_flags & RMI_DEVICE) + && test_bit(RMI_STARTED, &hdata->flags)) { clear_bit(RMI_STARTED, &hdata->flags); cancel_work_sync(&hdata->reset_work); rmi_unregister_transport_device(&hdata->xport); From patchwork Thu Jan 2 22:07:05 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234539 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C6308C3276C for ; Thu, 2 Jan 2020 22:53:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 99A5E21835 for ; Thu, 2 Jan 2020 22:53:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578005620; bh=CMzUwSsyVQSqBUOiejZscCQQm1OBmrt+0022tPOxSKg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=2YCjRZKhbtQU/7+LJIIhZpmKuE7MxyCxHjWS2RR22H6u+Es8ox4cE1A8piNMq5A5r tamokfffZEhP9eXkdfm3Icm8Y5PvPSSeIuBvsnsYbjmbdefbqwWdLrscMuz/gSY/wL o8ZysnIbuuHNTw7iL7C+7Wsb/5iywQx0o1N2M18w= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727523AbgABWxf (ORCPT ); Thu, 2 Jan 2020 17:53:35 -0500 Received: from mail.kernel.org ([198.145.29.99]:40978 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729020AbgABWVh (ORCPT ); Thu, 2 Jan 2020 17:21:37 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 6E5E820863; Thu, 2 Jan 2020 22:21:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003696; bh=CMzUwSsyVQSqBUOiejZscCQQm1OBmrt+0022tPOxSKg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Yg+Rf7smd0Iuw/CYS2Jw8v/FIh+Kgcvs7eUYzRHGl8syJU3zJ8l2xScofcK7dXUp8 texujMJo5oioCPEnh4D3NtJ6ixbZU8C7jbM2meT5N0AMpLoO1J9Ar0X2f3OlTC0OPd 5HktiMckqDq7VR4vN2KomQTYZi1rwHsiTUPYYdWQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Avri Altman , Bean Huo , Subhash Jadavani , Can Guo , "Martin K. Petersen" , Sasha Levin Subject: [PATCH 4.19 053/114] scsi: ufs: Fix error handing during hibern8 enter Date: Thu, 2 Jan 2020 23:07:05 +0100 Message-Id: <20200102220034.406463258@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Subhash Jadavani [ Upstream commit 6d303e4b19d694cdbebf76bcdb51ada664ee953d ] During clock gating (ufshcd_gate_work()), we first put the link hibern8 by calling ufshcd_uic_hibern8_enter() and if ufshcd_uic_hibern8_enter() returns success (0) then we gate all the clocks. Now let’s zoom in to what ufshcd_uic_hibern8_enter() does internally: It calls __ufshcd_uic_hibern8_enter() and if failure is encountered, link recovery shall put the link back to the highest HS gear and returns success (0) to ufshcd_uic_hibern8_enter() which is the issue as link is still in active state due to recovery! Now ufshcd_uic_hibern8_enter() returns success to ufshcd_gate_work() and hence it goes ahead with gating the UFS clock while link is still in active state hence I believe controller would raise UIC error interrupts. But when we service the interrupt, clocks might have already been disabled! This change fixes for this by returning failure from __ufshcd_uic_hibern8_enter() if recovery succeeds as link is still not in hibern8, upon receiving the error ufshcd_hibern8_enter() would initiate retry to put the link state back into hibern8. Link: https://lore.kernel.org/r/1573798172-20534-8-git-send-email-cang@codeaurora.org Reviewed-by: Avri Altman Reviewed-by: Bean Huo Signed-off-by: Subhash Jadavani Signed-off-by: Can Guo Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/ufs/ufshcd.c | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-) diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 7510d8328d4d..3601e770da16 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -3875,15 +3875,24 @@ static int __ufshcd_uic_hibern8_enter(struct ufs_hba *hba) ktime_to_us(ktime_sub(ktime_get(), start)), ret); if (ret) { + int err; + dev_err(hba->dev, "%s: hibern8 enter failed. ret = %d\n", __func__, ret); /* - * If link recovery fails then return error so that caller - * don't retry the hibern8 enter again. + * If link recovery fails then return error code returned from + * ufshcd_link_recovery(). + * If link recovery succeeds then return -EAGAIN to attempt + * hibern8 enter retry again. */ - if (ufshcd_link_recovery(hba)) - ret = -ENOLINK; + err = ufshcd_link_recovery(hba); + if (err) { + dev_err(hba->dev, "%s: link recovery failed", __func__); + ret = err; + } else { + ret = -EAGAIN; + } } else ufshcd_vops_hibern8_notify(hba, UIC_CMD_DME_HIBER_ENTER, POST_CHANGE); @@ -3897,7 +3906,7 @@ static int ufshcd_uic_hibern8_enter(struct ufs_hba *hba) for (retries = UIC_HIBERN8_ENTER_RETRIES; retries > 0; retries--) { ret = __ufshcd_uic_hibern8_enter(hba); - if (!ret || ret == -ENOLINK) + if (!ret) goto out; } out: From patchwork Thu Jan 2 22:07:06 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234759 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DCFFCC3276F for ; Thu, 2 Jan 2020 22:21:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B26C821835 for ; Thu, 2 Jan 2020 22:21:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003701; bh=X0HoWFRX0aHvr5DB4mtrAuXGQysX0wHdE3DBP5LEEOk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ktH0NnJW/jxpqwHUCLirDv+Og1QHyMCrA0QL96+hQ6T10lKZFjVIMKVHouPSsXzJr 7znDu/TVtknGR+LZdK7E2gJel6/wu4WI2RpK6kXGUhlPJAyHzSjcs0rqBHucuQ2A4u Xj35n2MwSe3KUbEgK28zlTEgNstkVMRV07nhPLcY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728826AbgABWVk (ORCPT ); Thu, 2 Jan 2020 17:21:40 -0500 Received: from mail.kernel.org ([198.145.29.99]:41074 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729032AbgABWVj (ORCPT ); Thu, 2 Jan 2020 17:21:39 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id D29C324649; Thu, 2 Jan 2020 22:21:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003699; bh=X0HoWFRX0aHvr5DB4mtrAuXGQysX0wHdE3DBP5LEEOk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=D9x7kpkR8GE9wjrBGmksq9ydGkkJTpbhkybiwujruu6igaFIZCuJbqLDnNvXFvsXC OPallHBnxb42HxVHZKam6uKrJ+7C2ZVivYc1yp6CQN0FFci0NzQnpQnnWAVoJPy3mg 0HBJk2tsO0UW6QWrD9YgvRLawWeDe1OSuLsXXNQQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Maurizio Lombardi , Douglas Gilbert , "Martin K. Petersen" , Sasha Levin Subject: [PATCH 4.19 054/114] scsi: scsi_debug: num_tgts must be >= 0 Date: Thu, 2 Jan 2020 23:07:06 +0100 Message-Id: <20200102220034.493876476@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Maurizio Lombardi [ Upstream commit aa5334c4f3014940f11bf876e919c956abef4089 ] Passing the parameter "num_tgts=-1" will start an infinite loop that exhausts the system memory Link: https://lore.kernel.org/r/20191115163727.24626-1-mlombard@redhat.com Signed-off-by: Maurizio Lombardi Acked-by: Douglas Gilbert Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/scsi_debug.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index 65305b3848bc..a1dbae806fde 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -5351,6 +5351,11 @@ static int __init scsi_debug_init(void) return -EINVAL; } + if (sdebug_num_tgts < 0) { + pr_err("num_tgts must be >= 0\n"); + return -EINVAL; + } + if (sdebug_guard > 1) { pr_err("guard must be 0 or 1\n"); return -EINVAL; From patchwork Thu Jan 2 22:07:10 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234762 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5FF08C3276D for ; Thu, 2 Jan 2020 22:20:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3549120866 for ; Thu, 2 Jan 2020 22:20:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003656; bh=UTEyKcIeo6ufvAwkvkVDtzwNGjdsk+EvlIbWR0QJSkI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=114w2OkoEsfo1WsqYeljuu49zjTqdX3EHnyuwODwCcjlX7K9zEY4OEtO+EOw8gyJL b7BKQlcLCKuZxBoDMZy1gyD/eKMHNyPlkl24KLySJnN6b2H2GgeOCeBuYb/fs+RD6R N/KNxJUL+/QJtuCeNZ/CA/2balPdR2gdoKtXWbtY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728886AbgABWUz (ORCPT ); Thu, 2 Jan 2020 17:20:55 -0500 Received: from mail.kernel.org ([198.145.29.99]:39084 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728895AbgABWUw (ORCPT ); Thu, 2 Jan 2020 17:20:52 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 141D520866; Thu, 2 Jan 2020 22:20:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003651; bh=UTEyKcIeo6ufvAwkvkVDtzwNGjdsk+EvlIbWR0QJSkI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kSW5Y2PzrT9wECELCDsoQnEEePerFt5X/el42K6p7nE0yy6bd3/D1pf23A3JkU3uP SQ61zsW8DdAwCpLMMpHpxLDWgMhIJox0Q1w0IRmKrkUgxP7vgNX2ArFLzpuB7hh+bY 5wjgN6noAP0qJK4wNVrfIHzNAAKs94Vd0uJIcasA= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Vladimir Oltean , Michael Walle , Linus Walleij , Sasha Levin Subject: [PATCH 4.19 058/114] gpio: mpc8xxx: Dont overwrite default irq_set_type callback Date: Thu, 2 Jan 2020 23:07:10 +0100 Message-Id: <20200102220034.881471342@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Vladimir Oltean [ Upstream commit 4e50573f39229d5e9c985fa3b4923a8b29619ade ] The per-SoC devtype structures can contain their own callbacks that overwrite mpc8xxx_gpio_devtype_default. The clear intention is that mpc8xxx_irq_set_type is used in case the SoC does not specify a more specific callback. But what happens is that if the SoC doesn't specify one, its .irq_set_type is de-facto NULL, and this overwrites mpc8xxx_irq_set_type to a no-op. This means that the following SoCs are affected: - fsl,mpc8572-gpio - fsl,ls1028a-gpio - fsl,ls1088a-gpio On these boards, the irq_set_type does exactly nothing, and the GPIO controller keeps its GPICR register in the hardware-default state. On the LS1028A, that is ACTIVE_BOTH, which means 2 interrupts are raised even if the IRQ client requests LEVEL_HIGH. Another implication is that the IRQs are not checked (e.g. level-triggered interrupts are not rejected, although they are not supported). Fixes: 82e39b0d8566 ("gpio: mpc8xxx: handle differences between incarnations at a single place") Signed-off-by: Vladimir Oltean Link: https://lore.kernel.org/r/20191115125551.31061-1-olteanv@gmail.com Tested-by: Michael Walle Signed-off-by: Linus Walleij Signed-off-by: Sasha Levin --- drivers/gpio/gpio-mpc8xxx.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpio/gpio-mpc8xxx.c b/drivers/gpio/gpio-mpc8xxx.c index c8673a5d9412..3f10f9599f2c 100644 --- a/drivers/gpio/gpio-mpc8xxx.c +++ b/drivers/gpio/gpio-mpc8xxx.c @@ -348,7 +348,8 @@ static int mpc8xxx_probe(struct platform_device *pdev) * It's assumed that only a single type of gpio controller is available * on the current machine, so overwriting global data is fine. */ - mpc8xxx_irq_chip.irq_set_type = devtype->irq_set_type; + if (devtype->irq_set_type) + mpc8xxx_irq_chip.irq_set_type = devtype->irq_set_type; if (devtype->gpio_dir_out) gc->direction_output = devtype->gpio_dir_out; From patchwork Thu Jan 2 22:07:11 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234532 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 92852C3276D for ; Thu, 2 Jan 2020 22:54:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5F00521D7D for ; Thu, 2 Jan 2020 22:54:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578005658; bh=1HQOmY+/vAg36JcMkUhBh/Zavmr/ssHnliyiwLhDux8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=sIPXlM5w3hnYkgcW8v3WUddDs5G7ymZf6Od4RoouK5FbXGPaZfCDikbYXL+aLUNvt 5bBWG0Uup1Qw5jlp9gpJdZakVRXuCa3l6ldhL5zJrKwPtJZN92OrtCZaw19/o8Ip98 7mFRp82cYxck4s/AmXx3nKoAqnpQpMBt2N+NvD6k= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728591AbgABWUz (ORCPT ); Thu, 2 Jan 2020 17:20:55 -0500 Received: from mail.kernel.org ([198.145.29.99]:39156 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726927AbgABWUy (ORCPT ); Thu, 2 Jan 2020 17:20:54 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 6DC3D21582; Thu, 2 Jan 2020 22:20:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003653; bh=1HQOmY+/vAg36JcMkUhBh/Zavmr/ssHnliyiwLhDux8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=bB6N+WIfWcBohw6kFVbm0kr73+AXu3u8hAWou9a/s55o4hJAgKpqm7dnwBt+PP40c 4R5Ci+b5/6kP55tniOSaMux8DAX2DDfcvinDudilU2S6VEuoEHvcp0d09Fsak7Z4gw E2UNVdIlPJG9DaUNB7N8enrbFJ1mY/bBnBdmkngI= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Colin Ian King , John Johansen , Sasha Levin Subject: [PATCH 4.19 059/114] apparmor: fix unsigned len comparison with less than zero Date: Thu, 2 Jan 2020 23:07:11 +0100 Message-Id: <20200102220034.968393658@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Colin Ian King [ Upstream commit 00e0590dbaec6f1bcaa36a85467d7e3497ced522 ] The sanity check in macro update_for_len checks to see if len is less than zero, however, len is a size_t so it can never be less than zero, so this sanity check is a no-op. Fix this by making len a ssize_t so the comparison will work and add ulen that is a size_t copy of len so that the min() macro won't throw warnings about comparing different types. Addresses-Coverity: ("Macro compares unsigned to 0") Fixes: f1bd904175e8 ("apparmor: add the base fns() for domain labels") Signed-off-by: Colin Ian King Signed-off-by: John Johansen Signed-off-by: Sasha Levin --- security/apparmor/label.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/security/apparmor/label.c b/security/apparmor/label.c index ba11bdf9043a..2469549842d2 100644 --- a/security/apparmor/label.c +++ b/security/apparmor/label.c @@ -1462,11 +1462,13 @@ static inline bool use_label_hname(struct aa_ns *ns, struct aa_label *label, /* helper macro for snprint routines */ #define update_for_len(total, len, size, str) \ do { \ + size_t ulen = len; \ + \ AA_BUG(len < 0); \ - total += len; \ - len = min(len, size); \ - size -= len; \ - str += len; \ + total += ulen; \ + ulen = min(ulen, size); \ + size -= ulen; \ + str += ulen; \ } while (0) /** @@ -1601,7 +1603,7 @@ int aa_label_snxprint(char *str, size_t size, struct aa_ns *ns, struct aa_ns *prev_ns = NULL; struct label_it i; int count = 0, total = 0; - size_t len; + ssize_t len; AA_BUG(!str && size != 0); AA_BUG(!label); From patchwork Thu Jan 2 22:07:14 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234533 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 35C71C3276C for ; Thu, 2 Jan 2020 22:54:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0A7C221D7D for ; Thu, 2 Jan 2020 22:54:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578005654; bh=iprWCtLGEBo8BgYJE9kAck3R9X49tsn0AWg2uJ6REZQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ind7DAqEE7TBsIPzdK2FH7dOerDpQby8lQepeXUegQ3rW//1o9DpstYdiqJLQ8Xsy ZFhf7/Ee2NN8fX9aFXgDiVN2Dltvue/hbAPBuEnrYw1hnVy/4Gssav+tf6aFcCc3Qo ePC7SUn1wCcfORX3FK7sngsWNk1cEQFNYGoQPC8A= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728926AbgABWVC (ORCPT ); Thu, 2 Jan 2020 17:21:02 -0500 Received: from mail.kernel.org ([198.145.29.99]:39504 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728920AbgABWVB (ORCPT ); Thu, 2 Jan 2020 17:21:01 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 8A68920866; Thu, 2 Jan 2020 22:21:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003661; bh=iprWCtLGEBo8BgYJE9kAck3R9X49tsn0AWg2uJ6REZQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=rDX2BFz2/A7osvKq9EZ0IFU2LQs2ovhoSsk8XsO5h8Dpvh3VzLreLPYeZfL9PD4xE GG3FXUJ+GwlHYzxjGEMhAxjeYuDn6YweraIdb03yUxtPR+GaBm71zNOLYDjLCxgvRw JQz1hnSfte86Abcccd/N8b+06NbygEKY6HA8sf3s= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Chengguang Xu , Chao Yu , Jaegeuk Kim , Sasha Levin Subject: [PATCH 4.19 062/114] f2fs: choose hardlimit when softlimit is larger than hardlimit in f2fs_statfs_project() Date: Thu, 2 Jan 2020 23:07:14 +0100 Message-Id: <20200102220035.294585461@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Chengguang Xu [ Upstream commit 909110c060f22e65756659ec6fa957ae75777e00 ] Setting softlimit larger than hardlimit seems meaningless for disk quota but currently it is allowed. In this case, there may be a bit of comfusion for users when they run df comamnd to directory which has project quota. For example, we set 20M softlimit and 10M hardlimit of block usage limit for project quota of test_dir(project id 123). [root@hades f2fs]# repquota -P -a *** Report for project quotas on device /dev/nvme0n1p8 Block grace time: 7days; Inode grace time: 7days Block limits File limits Project used soft hard grace used soft hard grace ---------------------------------------------------------------------- 0 -- 4 0 0 1 0 0 123 +- 10248 20480 10240 2 0 0 The result of df command as below: [root@hades f2fs]# df -h /mnt/f2fs/test Filesystem Size Used Avail Use% Mounted on /dev/nvme0n1p8 20M 11M 10M 51% /mnt/f2fs Even though it looks like there is another 10M free space to use, if we write new data to diretory test(inherit project id), the write will fail with errno(-EDQUOT). After this patch, the df result looks like below. [root@hades f2fs]# df -h /mnt/f2fs/test Filesystem Size Used Avail Use% Mounted on /dev/nvme0n1p8 10M 10M 0 100% /mnt/f2fs Signed-off-by: Chengguang Xu Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim Signed-off-by: Sasha Levin --- fs/f2fs/super.c | 20 ++++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-) diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 7a9cc64f5ca3..662c7de58b99 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -1148,9 +1148,13 @@ static int f2fs_statfs_project(struct super_block *sb, return PTR_ERR(dquot); spin_lock(&dquot->dq_dqb_lock); - limit = (dquot->dq_dqb.dqb_bsoftlimit ? - dquot->dq_dqb.dqb_bsoftlimit : - dquot->dq_dqb.dqb_bhardlimit) >> sb->s_blocksize_bits; + limit = 0; + if (dquot->dq_dqb.dqb_bsoftlimit) + limit = dquot->dq_dqb.dqb_bsoftlimit; + if (dquot->dq_dqb.dqb_bhardlimit && + (!limit || dquot->dq_dqb.dqb_bhardlimit < limit)) + limit = dquot->dq_dqb.dqb_bhardlimit; + if (limit && buf->f_blocks > limit) { curblock = dquot->dq_dqb.dqb_curspace >> sb->s_blocksize_bits; buf->f_blocks = limit; @@ -1159,9 +1163,13 @@ static int f2fs_statfs_project(struct super_block *sb, (buf->f_blocks - curblock) : 0; } - limit = dquot->dq_dqb.dqb_isoftlimit ? - dquot->dq_dqb.dqb_isoftlimit : - dquot->dq_dqb.dqb_ihardlimit; + limit = 0; + if (dquot->dq_dqb.dqb_isoftlimit) + limit = dquot->dq_dqb.dqb_isoftlimit; + if (dquot->dq_dqb.dqb_ihardlimit && + (!limit || dquot->dq_dqb.dqb_ihardlimit < limit)) + limit = dquot->dq_dqb.dqb_ihardlimit; + if (limit && buf->f_files > limit) { buf->f_files = limit; buf->f_ffree = From patchwork Thu Jan 2 22:07:15 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234761 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4B7E7C3276E for ; Thu, 2 Jan 2020 22:21:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2074520866 for ; Thu, 2 Jan 2020 22:21:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003666; bh=IMSOtqcwaP6UlIqYmPsM13lnT/jot8oLkrsfRUmghbg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ULwjkgKeLgK1l5ygfYcD4eDN+ssvbKhLD8mIhkaWxOjCbQzrkrmOWZbOdkrrrYfJ9 kg3s03COyZK2Z5fT7yASJU8K2x4tPiAItAPFJ0zMmrS0GQl+D9csQDQhTY/au4iPMi ZAArwsMn4hwbVBhkZJdpfSA6na5qyEbFOd3D/jD8= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728940AbgABWVF (ORCPT ); Thu, 2 Jan 2020 17:21:05 -0500 Received: from mail.kernel.org ([198.145.29.99]:39582 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728931AbgABWVD (ORCPT ); Thu, 2 Jan 2020 17:21:03 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E6FC021582; Thu, 2 Jan 2020 22:21:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003663; bh=IMSOtqcwaP6UlIqYmPsM13lnT/jot8oLkrsfRUmghbg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=sPoP68wSNv3TPcxrz0YtV6+MFhpfCkgOgQ0P0pVX3MchcJ1eYhtbGWvzkZCEIGJc1 XdbTICVQ74SGTyaFy3MNSUG55x45bUYXtIjNinjvRpaeasK61T7PTJ6FTq0+lz2xvF L9TqbxOO8jbhzg0Eu5TLLt8eifw18SBWnq1bIx+M= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org, Jens Axboe Cc: Greg Kroah-Hartman , stable@vger.kernel.org, linux-scsi@vger.kernel.org, =?utf-8?q?Diego_Elio_Petten=C3=B2?= , Sasha Levin Subject: [PATCH 4.19 063/114] cdrom: respect device capabilities during opening action Date: Thu, 2 Jan 2020 23:07:15 +0100 Message-Id: <20200102220035.429538902@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Diego Elio Pettenò [ Upstream commit 366ba7c71ef77c08d06b18ad61b26e2df7352338 ] Reading the TOC only works if the device can play audio, otherwise these commands fail (and possibly bring the device to an unhealthy state.) Similarly, cdrom_mmc3_profile() should only be called if the device supports generic packet commands. To: Jens Axboe Cc: linux-kernel@vger.kernel.org Cc: linux-scsi@vger.kernel.org Signed-off-by: Diego Elio Pettenò Signed-off-by: Jens Axboe Signed-off-by: Sasha Levin --- drivers/cdrom/cdrom.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c index 933268b8d6a5..d3947388a3ef 100644 --- a/drivers/cdrom/cdrom.c +++ b/drivers/cdrom/cdrom.c @@ -996,6 +996,12 @@ static void cdrom_count_tracks(struct cdrom_device_info *cdi, tracktype *tracks) tracks->xa = 0; tracks->error = 0; cd_dbg(CD_COUNT_TRACKS, "entering cdrom_count_tracks\n"); + + if (!CDROM_CAN(CDC_PLAY_AUDIO)) { + tracks->error = CDS_NO_INFO; + return; + } + /* Grab the TOC header so we can see how many tracks there are */ ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCHDR, &header); if (ret) { @@ -1162,7 +1168,8 @@ int cdrom_open(struct cdrom_device_info *cdi, struct block_device *bdev, ret = open_for_data(cdi); if (ret) goto err; - cdrom_mmc3_profile(cdi); + if (CDROM_CAN(CDC_GENERIC_PACKET)) + cdrom_mmc3_profile(cdi); if (mode & FMODE_WRITE) { ret = -EROFS; if (cdrom_open_write(cdi)) @@ -2882,6 +2889,9 @@ int cdrom_get_last_written(struct cdrom_device_info *cdi, long *last_written) it doesn't give enough information or fails. then we return the toc contents. */ use_toc: + if (!CDROM_CAN(CDC_PLAY_AUDIO)) + return -ENOSYS; + toc.cdte_format = CDROM_MSF; toc.cdte_track = CDROM_LEADOUT; if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &toc))) From patchwork Thu Jan 2 22:07:16 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234535 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7072BC3276C for ; Thu, 2 Jan 2020 22:54:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 44EFE20848 for ; Thu, 2 Jan 2020 22:54:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578005642; bh=bYBlGQ76oF4r5ksCFJzmbgT5wpBN8C0wyZkAm30cKPg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=XYhFKjEC3HD56iItYWLzvpjkChUnVtt5GX4eKl5IOj/JokKLEL847DNZR3sbyiWci d6jSpjunqZyf19rQ1R562YO/LMGizjvEjXC11iFdeRl4izdSioxF5OjSgm3wjjSVe0 eEzUtdkn4TSvecEYrKsGwB6LU2PGAQLd8KqBlReA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728101AbgABWVH (ORCPT ); Thu, 2 Jan 2020 17:21:07 -0500 Received: from mail.kernel.org ([198.145.29.99]:39684 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728943AbgABWVH (ORCPT ); Thu, 2 Jan 2020 17:21:07 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 4C06721582; Thu, 2 Jan 2020 22:21:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003665; bh=bYBlGQ76oF4r5ksCFJzmbgT5wpBN8C0wyZkAm30cKPg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=XZbjoDoGJW/c3NX1OSvLDeivz3FUpDHTb3B89jLoW4byZg6pbjeQ07DhRWWeAJXGj tBsXEj/DvLRKxzYbaUc+Fci/NgHO8Yayxbr9qSaoqgtcPlvFZznqrXAw2oB1KBrbYb iP3nWo1meJKO5qqFc+0ksFX1YY6/90cwZeb/91Rk= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Andi Kleen , Adrian Hunter , Jiri Olsa , Arnaldo Carvalho de Melo , Sasha Levin Subject: [PATCH 4.19 064/114] perf script: Fix brstackinsn for AUXTRACE Date: Thu, 2 Jan 2020 23:07:16 +0100 Message-Id: <20200102220035.520418674@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Adrian Hunter [ Upstream commit 0cd032d3b5fcebf5454315400ab310746a81ca53 ] brstackinsn must be allowed to be set by the user when AUX area data has been captured because, in that case, the branch stack might be synthesized on the fly. This fixes the following error: Before: $ perf record -e '{intel_pt//,cpu/mem_inst_retired.all_loads,aux-sample-size=8192/pp}:u' grep -rqs jhgjhg /boot [ perf record: Woken up 19 times to write data ] [ perf record: Captured and wrote 2.274 MB perf.data ] $ perf script -F +brstackinsn --xed --itrace=i1usl100 | head Display of branch stack assembler requested, but non all-branch filter set Hint: run 'perf record -b ...' After: $ perf record -e '{intel_pt//,cpu/mem_inst_retired.all_loads,aux-sample-size=8192/pp}:u' grep -rqs jhgjhg /boot [ perf record: Woken up 19 times to write data ] [ perf record: Captured and wrote 2.274 MB perf.data ] $ perf script -F +brstackinsn --xed --itrace=i1usl100 | head grep 13759 [002] 8091.310257: 1862 instructions:uH: 5641d58069eb bmexec+0x86b (/bin/grep) bmexec+2485: 00005641d5806b35 jnz 0x5641d5806bd0 # MISPRED 00005641d5806bd0 movzxb (%r13,%rdx,1), %eax 00005641d5806bd6 add %rdi, %rax 00005641d5806bd9 movzxb -0x1(%rax), %edx 00005641d5806bdd cmp %rax, %r14 00005641d5806be0 jnb 0x5641d58069c0 # MISPRED mismatch of LBR data and executable 00005641d58069c0 movzxb (%r13,%rdx,1), %edi Fixes: 48d02a1d5c13 ("perf script: Add 'brstackinsn' for branch stacks") Reported-by: Andi Kleen Signed-off-by: Adrian Hunter Cc: Jiri Olsa Link: http://lore.kernel.org/lkml/20191127095322.15417-1-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin --- tools/perf/builtin-script.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index a4c78499c838..1200973c77cb 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -428,7 +428,7 @@ static int perf_evsel__check_attr(struct perf_evsel *evsel, "selected. Hence, no address to lookup the source line number.\n"); return -EINVAL; } - if (PRINT_FIELD(BRSTACKINSN) && + if (PRINT_FIELD(BRSTACKINSN) && !allow_user_set && !(perf_evlist__combined_branch_type(session->evlist) & PERF_SAMPLE_BRANCH_ANY)) { pr_err("Display of branch stack assembler requested, but non all-branch filter set\n" From patchwork Thu Jan 2 22:07:19 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234536 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BEEFAC3276E for ; Thu, 2 Jan 2020 22:53:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 947F620848 for ; Thu, 2 Jan 2020 22:53:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578005634; bh=s5hrIeR/stKztvZ6petLntQp/eDSvEeUVZssIHzRhHg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=i75aN+UQD0YBeKNeBjVnVladcjiyN9TG/8vANoqqok4VtUMZmLTEucS2EB8A/bk2m NAAHAQSS2QCS9OSpAX1elRFELfGbo2LmgMwuL7UUYoZxe4q/pir/Gq5FpoPA79UMoE jWUfSAfdPXbK6Q9HWxbB0NMsO3LS3co24zKxfYB8= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728637AbgABWVQ (ORCPT ); Thu, 2 Jan 2020 17:21:16 -0500 Received: from mail.kernel.org ([198.145.29.99]:40112 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728716AbgABWVP (ORCPT ); Thu, 2 Jan 2020 17:21:15 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id EB1B3222C3; Thu, 2 Jan 2020 22:21:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003675; bh=s5hrIeR/stKztvZ6petLntQp/eDSvEeUVZssIHzRhHg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=wafiGzB6REmu7HeMbdQCa+byZ7LpvuP9zXzoxEGRw1Vtw20gNGoHXAlyZSbpM6gkb +jyqSLiHoyk9U2uvAWE1J7Ba5HQdZQidntVjTpZ63IZgihF4QC72xsFBkuLCJOPU3u ISwGMnsFEDH1088aA30YQLBKbliTyn+wmArtJ6vs= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Masahiro Yamada , Rob Herring , Sasha Levin Subject: [PATCH 4.19 067/114] libfdt: define INT32_MAX and UINT32_MAX in libfdt_env.h Date: Thu, 2 Jan 2020 23:07:19 +0100 Message-Id: <20200102220035.827015006@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Masahiro Yamada [ Upstream commit a8de1304b7df30e3a14f2a8b9709bb4ff31a0385 ] The DTC v1.5.1 added references to (U)INT32_MAX. This is no problem for user-space programs since defines (U)INT32_MAX along with (u)int32_t. For the kernel space, libfdt_env.h needs to be adjusted before we pull in the changes. In the kernel, we usually use s/u32 instead of (u)int32_t for the fixed-width types. Accordingly, we already have S/U32_MAX for their max values. So, we should not add (U)INT32_MAX to any more. Instead, add them to the in-kernel libfdt_env.h to compile the latest libfdt. Signed-off-by: Masahiro Yamada Signed-off-by: Rob Herring Signed-off-by: Sasha Levin --- arch/arm/boot/compressed/libfdt_env.h | 4 +++- arch/powerpc/boot/libfdt_env.h | 2 ++ include/linux/libfdt_env.h | 3 +++ 3 files changed, 8 insertions(+), 1 deletion(-) diff --git a/arch/arm/boot/compressed/libfdt_env.h b/arch/arm/boot/compressed/libfdt_env.h index b36c0289a308..6a0f1f524466 100644 --- a/arch/arm/boot/compressed/libfdt_env.h +++ b/arch/arm/boot/compressed/libfdt_env.h @@ -2,11 +2,13 @@ #ifndef _ARM_LIBFDT_ENV_H #define _ARM_LIBFDT_ENV_H +#include #include #include #include -#define INT_MAX ((int)(~0U>>1)) +#define INT32_MAX S32_MAX +#define UINT32_MAX U32_MAX typedef __be16 fdt16_t; typedef __be32 fdt32_t; diff --git a/arch/powerpc/boot/libfdt_env.h b/arch/powerpc/boot/libfdt_env.h index 2abc8e83b95e..9757d4f6331e 100644 --- a/arch/powerpc/boot/libfdt_env.h +++ b/arch/powerpc/boot/libfdt_env.h @@ -6,6 +6,8 @@ #include #define INT_MAX ((int)(~0U>>1)) +#define UINT32_MAX ((u32)~0U) +#define INT32_MAX ((s32)(UINT32_MAX >> 1)) #include "of.h" diff --git a/include/linux/libfdt_env.h b/include/linux/libfdt_env.h index edb0f0c30904..1adf54aad2df 100644 --- a/include/linux/libfdt_env.h +++ b/include/linux/libfdt_env.h @@ -7,6 +7,9 @@ #include +#define INT32_MAX S32_MAX +#define UINT32_MAX U32_MAX + typedef __be16 fdt16_t; typedef __be32 fdt32_t; typedef __be64 fdt64_t; From patchwork Thu Jan 2 22:07:22 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234537 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8C276C3276C for ; Thu, 2 Jan 2020 22:53:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6207A20848 for ; Thu, 2 Jan 2020 22:53:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578005632; bh=dRUxQmiTazbrVsjjmAMxwSYiCkunN4KSxORzQPmk5gY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=XFT1hD63fsZJ//UwiE6WvWaoDRnj3hg7PWPEQNaOQvOjghxTI8o76hGsM/AxbvfA1 +UzJV8Znv/9txr8X41MSDqye7v2lP1eJ/f4fq42EjNSnfWRUIcnS+yQmeWySOsC6Ak NEwmvpPvlMSRFMYT3YMffhFVgi7ToAZm8xxHslvo= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728603AbgABWVY (ORCPT ); Thu, 2 Jan 2020 17:21:24 -0500 Received: from mail.kernel.org ([198.145.29.99]:40370 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728341AbgABWVX (ORCPT ); Thu, 2 Jan 2020 17:21:23 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 12EFF2253D; Thu, 2 Jan 2020 22:21:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003682; bh=dRUxQmiTazbrVsjjmAMxwSYiCkunN4KSxORzQPmk5gY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=0N2nn3m6ZAnZ4CY+2vdrZi93JyfXnceiAECTJjwslFugHd+VfKXEMnHZ03aB/1B5k 6BteG1iHPwgM9QrESBOhww8mK2BsjRjshkE3zDljwV5kkSSF//qGm+1Aq7TzmjftJQ Zqk17rAScyqo3donphc4F+sfu00DGTu64ei+nJZM= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Oleksij Rempel , Daniel Baluta , Richard Zhu , Dong Aisheng , Jassi Brar , Sasha Levin Subject: [PATCH 4.19 070/114] mailbox: imx: Fix Tx doorbell shutdown path Date: Thu, 2 Jan 2020 23:07:22 +0100 Message-Id: <20200102220036.133311996@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Daniel Baluta [ Upstream commit bf159d151a0b844be28882f39e316b5800acaa2b ] Tx doorbell is handled by txdb_tasklet and doesn't have an associated IRQ. Anyhow, imx_mu_shutdown ignores this and tries to free an IRQ that wasn't requested for Tx DB resulting in the following warning: [ 1.967644] Trying to free already-free IRQ 26 [ 1.972108] WARNING: CPU: 2 PID: 157 at kernel/irq/manage.c:1708 __free_irq+0xc0/0x358 [ 1.980024] Modules linked in: [ 1.983088] CPU: 2 PID: 157 Comm: kworker/2:1 Tainted: G [ 1.993524] Hardware name: Freescale i.MX8QXP MEK (DT) [ 1.998668] Workqueue: events deferred_probe_work_func [ 2.003812] pstate: 60000085 (nZCv daIf -PAN -UAO) [ 2.008607] pc : __free_irq+0xc0/0x358 [ 2.012364] lr : __free_irq+0xc0/0x358 [ 2.016111] sp : ffff00001179b7e0 [ 2.019422] x29: ffff00001179b7e0 x28: 0000000000000018 [ 2.024736] x27: ffff000011233000 x26: 0000000000000004 [ 2.030053] x25: 000000000000001a x24: ffff80083bec74d4 [ 2.035369] x23: 0000000000000000 x22: ffff80083bec7588 [ 2.040686] x21: ffff80083b1fe8d8 x20: ffff80083bec7400 [ 2.046003] x19: 0000000000000000 x18: ffffffffffffffff [ 2.051320] x17: 0000000000000000 x16: 0000000000000000 [ 2.056637] x15: ffff0000111296c8 x14: ffff00009179b517 [ 2.061953] x13: ffff00001179b525 x12: ffff000011142000 [ 2.067270] x11: ffff000011129f20 x10: ffff0000105da970 [ 2.072587] x9 : 00000000ffffffd0 x8 : 0000000000000194 [ 2.077903] x7 : 612065657266206f x6 : ffff0000111e7b09 [ 2.083220] x5 : 0000000000000003 x4 : 0000000000000000 [ 2.088537] x3 : 0000000000000000 x2 : 00000000ffffffff [ 2.093854] x1 : 28b70f0a2b60a500 x0 : 0000000000000000 [ 2.099173] Call trace: [ 2.101618] __free_irq+0xc0/0x358 [ 2.105021] free_irq+0x38/0x98 [ 2.108170] imx_mu_shutdown+0x90/0xb0 [ 2.111921] mbox_free_channel.part.2+0x24/0xb8 [ 2.116453] mbox_free_channel+0x18/0x28 This bug is present from the beginning of times. Cc: Oleksij Rempel Signed-off-by: Daniel Baluta Signed-off-by: Richard Zhu Reviewed-by: Dong Aisheng Signed-off-by: Jassi Brar Signed-off-by: Sasha Levin --- drivers/mailbox/imx-mailbox.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/mailbox/imx-mailbox.c b/drivers/mailbox/imx-mailbox.c index 363d35d5e49d..2f47023cab2b 100644 --- a/drivers/mailbox/imx-mailbox.c +++ b/drivers/mailbox/imx-mailbox.c @@ -214,8 +214,10 @@ static void imx_mu_shutdown(struct mbox_chan *chan) struct imx_mu_priv *priv = to_imx_mu_priv(chan->mbox); struct imx_mu_con_priv *cp = chan->con_priv; - if (cp->type == IMX_MU_TYPE_TXDB) + if (cp->type == IMX_MU_TYPE_TXDB) { tasklet_kill(&cp->txdb_tasklet); + return; + } imx_mu_xcr_rmw(priv, 0, IMX_MU_xCR_TIEn(cp->idx) | IMX_MU_xCR_RIEn(cp->idx)); From patchwork Thu Jan 2 22:07:24 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234753 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E9D1AC3276E for ; Thu, 2 Jan 2020 22:22:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C0185227BF for ; Thu, 2 Jan 2020 22:22:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003776; bh=p+ZuY98fhFtxM5QoJ6E1kKPS3QlhaamLCoV2jNhfMlg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=L/9MUnrN+nagItEU+IH4gj/mPKUfoAiFZc5eZ2ll7FZpcVE3ugYr4ntYxs8UC0K7N VzWe2Yf38gO+/V/CqrzNkrVbLqgdNEQ6nDkICkevQp1rUiEsuKWpeTthOV+47k6sqh OoU7v7Zu8eDSLRf4hK+SJTpgb8ywHxAqK5pYzYaE= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727186AbgABWWz (ORCPT ); Thu, 2 Jan 2020 17:22:55 -0500 Received: from mail.kernel.org ([198.145.29.99]:44034 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728884AbgABWWy (ORCPT ); Thu, 2 Jan 2020 17:22:54 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 4E5D2222C3; Thu, 2 Jan 2020 22:22:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003773; bh=p+ZuY98fhFtxM5QoJ6E1kKPS3QlhaamLCoV2jNhfMlg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=pGqx7E7bqw/VgnBsc/L7N8/0A1/Wb8q6QZeYhw47nGRiJeYC4XdfQUsDw/kVv+/aL 5CGabT0Cg9qjJnC4fpAAhfCO3qKLqeFOZPeG+bP8DbyczzFvinwe64QNlcFqUEVtEV VLNt+WKltl3kdBB4QHG8wK53bEm8oPjCXL3aY6A4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Mike Rapoport , Andrea Arcangeli , Daniel Colascione , Jann Horn , Lokesh Gidra , Nick Kralevich , Nosh Minwalla , Pavel Emelyanov , Tim Murray , Aleksa Sarai , Andrew Morton , Linus Torvalds , Sasha Levin Subject: [PATCH 4.19 072/114] userfaultfd: require CAP_SYS_PTRACE for UFFD_FEATURE_EVENT_FORK Date: Thu, 2 Jan 2020 23:07:24 +0100 Message-Id: <20200102220036.344760036@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Mike Rapoport [ Upstream commit 3c1c24d91ffd536de0a64688a9df7f49e58fadbc ] A while ago Andy noticed (http://lkml.kernel.org/r/CALCETrWY+5ynDct7eU_nDUqx=okQvjm=Y5wJvA4ahBja=CQXGw@mail.gmail.com) that UFFD_FEATURE_EVENT_FORK used by an unprivileged user may have security implications. As the first step of the solution the following patch limits the availably of UFFD_FEATURE_EVENT_FORK only for those having CAP_SYS_PTRACE. The usage of CAP_SYS_PTRACE ensures compatibility with CRIU. Yet, if there are other users of non-cooperative userfaultfd that run without CAP_SYS_PTRACE, they would be broken :( Current implementation of UFFD_FEATURE_EVENT_FORK modifies the file descriptor table from the read() implementation of uffd, which may have security implications for unprivileged use of the userfaultfd. Limit availability of UFFD_FEATURE_EVENT_FORK only for callers that have CAP_SYS_PTRACE. Link: http://lkml.kernel.org/r/1572967777-8812-2-git-send-email-rppt@linux.ibm.com Signed-off-by: Mike Rapoport Reviewed-by: Andrea Arcangeli Cc: Daniel Colascione Cc: Jann Horn Cc: Lokesh Gidra Cc: Nick Kralevich Cc: Nosh Minwalla Cc: Pavel Emelyanov Cc: Tim Murray Cc: Aleksa Sarai Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Sasha Levin --- fs/userfaultfd.c | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-) diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c index 9c2955f67f70..d269d1139f7f 100644 --- a/fs/userfaultfd.c +++ b/fs/userfaultfd.c @@ -1833,13 +1833,12 @@ static int userfaultfd_api(struct userfaultfd_ctx *ctx, if (copy_from_user(&uffdio_api, buf, sizeof(uffdio_api))) goto out; features = uffdio_api.features; - if (uffdio_api.api != UFFD_API || (features & ~UFFD_API_FEATURES)) { - memset(&uffdio_api, 0, sizeof(uffdio_api)); - if (copy_to_user(buf, &uffdio_api, sizeof(uffdio_api))) - goto out; - ret = -EINVAL; - goto out; - } + ret = -EINVAL; + if (uffdio_api.api != UFFD_API || (features & ~UFFD_API_FEATURES)) + goto err_out; + ret = -EPERM; + if ((features & UFFD_FEATURE_EVENT_FORK) && !capable(CAP_SYS_PTRACE)) + goto err_out; /* report all available features and ioctls to userland */ uffdio_api.features = UFFD_API_FEATURES; uffdio_api.ioctls = UFFD_API_IOCTLS; @@ -1852,6 +1851,11 @@ static int userfaultfd_api(struct userfaultfd_ctx *ctx, ret = 0; out: return ret; +err_out: + memset(&uffdio_api, 0, sizeof(uffdio_api)); + if (copy_to_user(buf, &uffdio_api, sizeof(uffdio_api))) + ret = -EFAULT; + goto out; } static long userfaultfd_ioctl(struct file *file, unsigned cmd, From patchwork Thu Jan 2 22:07:26 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234543 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=BAD_ENC_HEADER, DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A6634C3276E for ; Thu, 2 Jan 2020 22:53:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7B26E21835 for ; Thu, 2 Jan 2020 22:53:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578005583; bh=SMEJehBrbJjrA45F280FcI6aUeAE4KdjaoDeYzWp3+0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ZEohXQiPMntz24fIFI/8VSwmmNMWgHlDbC9Qn1m9DevgOkqspOhsdxAIapOaPOv4v YMQU/ZSf9W/O5ge8acmzysi1iDI+pHiaaLRuLG2aczmP9Q/UDcjyJnv3K0KKN1yBmi IYlwf7M0f5AcFiYnkyMY4zysz67cPakKHn1g1MWI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729113AbgABWWN (ORCPT ); Thu, 2 Jan 2020 17:22:13 -0500 Received: from mail.kernel.org ([198.145.29.99]:42404 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729102AbgABWWN (ORCPT ); Thu, 2 Jan 2020 17:22:13 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 501D3227BF; Thu, 2 Jan 2020 22:22:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003732; bh=SMEJehBrbJjrA45F280FcI6aUeAE4KdjaoDeYzWp3+0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YumHkAEo0smUq3IAGrV2tITj/44sV/lRKNnJaRCYG50mJ3QRYI1J/80fEhYQMLef1 C5NL6E5r7OSPz4sM15HedZbz4hVlXK1S9Sd9SVYpnpesBXH0s7pNAPA0qb6PF3oe++ iu5EEisWVcVOxLEtgjqN5BLW2M8wXi9b4kbjlkbA= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, "=?UTF-8?q?Jan=20H . =20Sch=C3=B6nherr?=" , Borislav Petkov , Tony Luck , "H. Peter Anvin" , Ingo Molnar , linux-edac , Thomas Gleixner , x86-ml , Yazen Ghannam , Sasha Levin Subject: [PATCH 4.19 074/114] x86/mce: Fix possibly incorrect severity calculation on AMD Date: Thu, 2 Jan 2020 23:07:26 +0100 Message-Id: <20200102220036.554952288@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Jan H. Schönherr [ Upstream commit a3a57ddad061acc90bef39635caf2b2330ce8f21 ] The function mce_severity_amd_smca() requires m->bank to be initialized for correct operation. Fix the one case, where mce_severity() is called without doing so. Fixes: 6bda529ec42e ("x86/mce: Grade uncorrected errors for SMCA-enabled systems") Fixes: d28af26faa0b ("x86/MCE: Initialize mce.bank in the case of a fatal error in mce_no_way_out()") Signed-off-by: Jan H. Schönherr Signed-off-by: Borislav Petkov Reviewed-by: Tony Luck Cc: "H. Peter Anvin" Cc: Ingo Molnar Cc: linux-edac Cc: Cc: Thomas Gleixner Cc: x86-ml Cc: Yazen Ghannam Link: https://lkml.kernel.org/r/20191210000733.17979-4-jschoenh@amazon.de Signed-off-by: Sasha Levin --- arch/x86/kernel/cpu/mcheck/mce.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c index 87ed8462a5c7..1f69b12d5bb8 100644 --- a/arch/x86/kernel/cpu/mcheck/mce.c +++ b/arch/x86/kernel/cpu/mcheck/mce.c @@ -812,8 +812,8 @@ static int mce_no_way_out(struct mce *m, char **msg, unsigned long *validp, if (quirk_no_way_out) quirk_no_way_out(i, m, regs); + m->bank = i; if (mce_severity(m, mca_cfg.tolerant, &tmp, true) >= MCE_PANIC_SEVERITY) { - m->bank = i; mce_read_aux(m, i); *msg = tmp; return 1; From patchwork Thu Jan 2 22:07:28 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234754 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A3D28C3276D for ; Thu, 2 Jan 2020 22:22:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6C74B2253D for ; Thu, 2 Jan 2020 22:22:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003761; bh=ibTZwRKS6VoVkzjX7po10SasPNuQ7+a9R/Nk96beczE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=pF8tH5ooW8Xj0MBWhYF//C6Gdm+xNh3d9L+bUXlorvtjWwpQvwzMtPwHJcWAKYcl5 XtEh5V5v1TDRdEoxyhZamyTXSTHcm850/bnUA6KsAp90RHiVQefo1p9jpeg+qLiFjQ XqtnxKYOkMW2amO/sY/qyv3omUnq8F6O9HronHtA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729155AbgABWWk (ORCPT ); Thu, 2 Jan 2020 17:22:40 -0500 Received: from mail.kernel.org ([198.145.29.99]:43482 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729165AbgABWWj (ORCPT ); Thu, 2 Jan 2020 17:22:39 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 04EE4222C3; Thu, 2 Jan 2020 22:22:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003759; bh=ibTZwRKS6VoVkzjX7po10SasPNuQ7+a9R/Nk96beczE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=szDIJgyA2O6KAVWEG43/9EJGNtCCBYufGqAcu4BaDol0WWjk1kznZscTVMaJ4ULD+ k3PFEDZx9r9h96wf+9hHn++uw+FcBpDl/0dwM77URS8YgoFSqxQvzSG0UBvPcZKfco 6jCSgybZw1gPAVVEHz8U/sqMm8bXFaFyq/ipwLVo= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Marco Oliverio , Rocco Folino , Florian Westphal , Pablo Neira Ayuso , Sasha Levin Subject: [PATCH 4.19 076/114] netfilter: nf_queue: enqueue skbs with NULL dst Date: Thu, 2 Jan 2020 23:07:28 +0100 Message-Id: <20200102220036.754351976@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Marco Oliverio [ Upstream commit 0b9173f4688dfa7c5d723426be1d979c24ce3d51 ] Bridge packets that are forwarded have skb->dst == NULL and get dropped by the check introduced by b60a77386b1d4868f72f6353d35dabe5fbe981f2 (net: make skb_dst_force return true when dst is refcounted). To fix this we check skb_dst() before skb_dst_force(), so we don't drop skb packet with dst == NULL. This holds also for skb at the PRE_ROUTING hook so we remove the second check. Fixes: b60a77386b1d ("net: make skb_dst_force return true when dst is refcounted") Signed-off-by: Marco Oliverio Signed-off-by: Rocco Folino Acked-by: Florian Westphal Signed-off-by: Pablo Neira Ayuso Signed-off-by: Sasha Levin --- net/netfilter/nf_queue.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/netfilter/nf_queue.c b/net/netfilter/nf_queue.c index a96a8c16baf9..ee6d98355081 100644 --- a/net/netfilter/nf_queue.c +++ b/net/netfilter/nf_queue.c @@ -174,7 +174,7 @@ static int __nf_queue(struct sk_buff *skb, const struct nf_hook_state *state, goto err; } - if (!skb_dst_force(skb) && state->hook != NF_INET_PRE_ROUTING) { + if (skb_dst(skb) && !skb_dst_force(skb)) { status = -ENETDOWN; goto err; } From patchwork Thu Jan 2 22:07:31 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234547 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0D881C3276D for ; Thu, 2 Jan 2020 22:52:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CDBCC20848 for ; Thu, 2 Jan 2020 22:52:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578005553; bh=Yb86dZj1zmqQt6V3G33LYnP/wlfh0kQGGKcZlNl/Qlg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=qx4IvWNfxPlBs1r/A/Ji7SpRTlm5/31MaNXrPdnbZQkXcoDFABX9b4knUUuzhpOLv oE61SgKjW2bZ53eX9VPbNy1OVo1w4vDIJZFsV+B1xRePnJgmxsNDNq/4xbHzpQrgRE K2EhXiXOy0Yg/j1q9UelJWprJ+dKCaqbkM4ZEcsQ= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727432AbgABWWs (ORCPT ); Thu, 2 Jan 2020 17:22:48 -0500 Received: from mail.kernel.org ([198.145.29.99]:43750 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728966AbgABWWr (ORCPT ); Thu, 2 Jan 2020 17:22:47 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 3F322222C3; Thu, 2 Jan 2020 22:22:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003766; bh=Yb86dZj1zmqQt6V3G33LYnP/wlfh0kQGGKcZlNl/Qlg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=05QjX7kKOt+H19WxBw1Q0hNiZaepLCPuxB+E3G7ASZArOHM5PeqwU5WSGdjFhj9lr +cQrw4yPK3jxwetSYKHJEU55amuBMXe4UyrM/1EYwkmDPHJOTh15CxNZ3sawTrTjQR m01t1kP4MBY+qHoqFVugaW3zILSeihmLmiTQpFKs= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Mattias Jacobsson <2pi@mok.nu>, Jiri Olsa , Peter Zijlstra , Sanskriti Sharma , Arnaldo Carvalho de Melo , Nobuhiro Iwamatsu Subject: [PATCH 4.19 079/114] perf strbuf: Remove redundant va_end() in strbuf_addv() Date: Thu, 2 Jan 2020 23:07:31 +0100 Message-Id: <20200102220037.065790380@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Mattias Jacobsson <2pi@mok.nu> commit 099be748865eece21362aee416c350c0b1ae34df upstream. Each call to va_copy() should have one, and only one, corresponding call to va_end(). In strbuf_addv() some code paths result in va_end() getting called multiple times. Remove the superfluous va_end(). Signed-off-by: Mattias Jacobsson <2pi@mok.nu> Cc: Jiri Olsa Cc: Peter Zijlstra Cc: Sanskriti Sharma Link: http://lkml.kernel.org/r/20181229141750.16945-1-2pi@mok.nu Fixes: ce49d8436cff ("perf strbuf: Match va_{add,copy} with va_end") Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Nobuhiro Iwamatsu Signed-off-by: Greg Kroah-Hartman --- tools/perf/util/strbuf.c | 1 - 1 file changed, 1 deletion(-) --- a/tools/perf/util/strbuf.c +++ b/tools/perf/util/strbuf.c @@ -109,7 +109,6 @@ static int strbuf_addv(struct strbuf *sb return ret; } len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, ap_saved); - va_end(ap_saved); if (len > strbuf_avail(sb)) { pr_debug("this should not happen, your vsnprintf is broken"); va_end(ap_saved); From patchwork Thu Jan 2 22:07:33 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234548 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9F458C3F68F for ; Thu, 2 Jan 2020 22:52:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6C14D21835 for ; Thu, 2 Jan 2020 22:52:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578005551; bh=Ur6uZT7dQ28R1SaIXCdt2Sy9psXIvln3QsjpYSVrcs8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=TnD5ZT8RJfa2eM96vvP3eyipqJr/+utMMpng9lhYWLsJY1r6ojjWt0VrUnSrefz0r ySIEyxhRHao9QRB8BntqRLJNuwxP6UI7OAad7dXDyAv702R18nM89ZX6puGdTuON86 h4zorGpTQ1it06XX6Wz2TWFdZf14icZyIUMrkHUs= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729193AbgABWW4 (ORCPT ); Thu, 2 Jan 2020 17:22:56 -0500 Received: from mail.kernel.org ([198.145.29.99]:43912 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729189AbgABWWw (ORCPT ); Thu, 2 Jan 2020 17:22:52 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 09B6020863; Thu, 2 Jan 2020 22:22:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003771; bh=Ur6uZT7dQ28R1SaIXCdt2Sy9psXIvln3QsjpYSVrcs8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kKDhETNZfr+GZE2sGA70J26fW1LD3+ucS3EFiFeySryGeXFeA9eRn5t0HYmS0B88J 2tBF4zQ57sdlL9+t6bcOwi0q3CWoxpklj8nuYuu1u1AHwbFiSshSkLRyPSHEN9CA0H lmZk6iubadvjdP2hZcl7r+r6O8LlwmjV2Yi1v4K0= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, syzbot+3031f712c7ad5dd4d926@syzkaller.appspotmail.com, Linus Torvalds , Siddharth Chandrasekaran Subject: [PATCH 4.19 081/114] filldir[64]: remove WARN_ON_ONCE() for bad directory entries Date: Thu, 2 Jan 2020 23:07:33 +0100 Message-Id: <20200102220037.307284614@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Linus Torvalds commit b9959c7a347d6adbb558fba7e36e9fef3cba3b07 upstream. This was always meant to be a temporary thing, just for testing and to see if it actually ever triggered. The only thing that reported it was syzbot doing disk image fuzzing, and then that warning is expected. So let's just remove it before -rc4, because the extra sanity testing should probably go to -stable, but we don't want the warning to do so. Reported-by: syzbot+3031f712c7ad5dd4d926@syzkaller.appspotmail.com Fixes: 8a23eb804ca4 ("Make filldir[64]() verify the directory entry filename is valid") Signed-off-by: Linus Torvalds Signed-off-by: Siddharth Chandrasekaran Signed-off-by: Greg Kroah-Hartman --- fs/readdir.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/fs/readdir.c +++ b/fs/readdir.c @@ -91,9 +91,9 @@ EXPORT_SYMBOL(iterate_dir); */ static int verify_dirent_name(const char *name, int len) { - if (WARN_ON_ONCE(!len)) + if (!len) return -EIO; - if (WARN_ON_ONCE(memchr(name, '/', len))) + if (memchr(name, '/', len)) return -EIO; return 0; } From patchwork Thu Jan 2 22:07:35 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234757 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AF1B4C3276C for ; Thu, 2 Jan 2020 22:21:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 769B921D7D for ; Thu, 2 Jan 2020 22:21:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003714; bh=zZsaeynMCpwoa3ybK+tlz92a77OWMbnxZCQX6T/LXss=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=aYgWkZ+hIYbuyskt+GzjhpVN2Rwvt6moQmCzJxaBTIvEpibRiuwiqalyMSVUDV30D VvvPc0Cx41l/DaGgN7nkJbrrlmKWVmJe+GbbpqdM5MMWyLuTHSC+QPkeVcYHVHz/Og /JVO0LVKqO6Vl8vE+2KhDBmdbkF3diJ01g4/pXeQ= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729062AbgABWVw (ORCPT ); Thu, 2 Jan 2020 17:21:52 -0500 Received: from mail.kernel.org ([198.145.29.99]:41630 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728611AbgABWVw (ORCPT ); Thu, 2 Jan 2020 17:21:52 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id AED1E21D7D; Thu, 2 Jan 2020 22:21:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003711; bh=zZsaeynMCpwoa3ybK+tlz92a77OWMbnxZCQX6T/LXss=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kmI/oxtWkROBJy0amHfcgNUB8MX1YNIFsUepopUui5q6BPi6kuiEAjx4/JgB8fmKF 0EwzuV/AxpWGsaAHwEgPWAzgWUdnHflHO0AhudQ2JbHvc+YMZjmD3np51MogLTbQ3n vuQHHXIYDwDPibKVLpZIZS7/sZ2VpfJxwwjTRNqQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, syzbot+f68108fed972453a0ad4@syzkaller.appspotmail.com, Florian Westphal , Pablo Neira Ayuso Subject: [PATCH 4.19 083/114] netfilter: ebtables: compat: reject all padding in matches/watchers Date: Thu, 2 Jan 2020 23:07:35 +0100 Message-Id: <20200102220037.546181771@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Florian Westphal commit e608f631f0ba5f1fc5ee2e260a3a35d13107cbfe upstream. syzbot reported following splat: BUG: KASAN: vmalloc-out-of-bounds in size_entry_mwt net/bridge/netfilter/ebtables.c:2063 [inline] BUG: KASAN: vmalloc-out-of-bounds in compat_copy_entries+0x128b/0x1380 net/bridge/netfilter/ebtables.c:2155 Read of size 4 at addr ffffc900004461f4 by task syz-executor267/7937 CPU: 1 PID: 7937 Comm: syz-executor267 Not tainted 5.5.0-rc1-syzkaller #0 size_entry_mwt net/bridge/netfilter/ebtables.c:2063 [inline] compat_copy_entries+0x128b/0x1380 net/bridge/netfilter/ebtables.c:2155 compat_do_replace+0x344/0x720 net/bridge/netfilter/ebtables.c:2249 compat_do_ebt_set_ctl+0x22f/0x27e net/bridge/netfilter/ebtables.c:2333 [..] Because padding isn't considered during computation of ->buf_user_offset, "total" is decremented by fewer bytes than it should. Therefore, the first part of if (*total < sizeof(*entry) || entry->next_offset < sizeof(*entry)) will pass, -- it should not have. This causes oob access: entry->next_offset is past the vmalloced size. Reject padding and check that computed user offset (sum of ebt_entry structure plus all individual matches/watchers/targets) is same value that userspace gave us as the offset of the next entry. Reported-by: syzbot+f68108fed972453a0ad4@syzkaller.appspotmail.com Fixes: 81e675c227ec ("netfilter: ebtables: add CONFIG_COMPAT support") Signed-off-by: Florian Westphal Signed-off-by: Pablo Neira Ayuso Signed-off-by: Greg Kroah-Hartman --- net/bridge/netfilter/ebtables.c | 33 ++++++++++++++++----------------- 1 file changed, 16 insertions(+), 17 deletions(-) --- a/net/bridge/netfilter/ebtables.c +++ b/net/bridge/netfilter/ebtables.c @@ -1876,7 +1876,7 @@ static int ebt_buf_count(struct ebt_entr } static int ebt_buf_add(struct ebt_entries_buf_state *state, - void *data, unsigned int sz) + const void *data, unsigned int sz) { if (state->buf_kern_start == NULL) goto count_only; @@ -1910,7 +1910,7 @@ enum compat_mwt { EBT_COMPAT_TARGET, }; -static int compat_mtw_from_user(struct compat_ebt_entry_mwt *mwt, +static int compat_mtw_from_user(const struct compat_ebt_entry_mwt *mwt, enum compat_mwt compat_mwt, struct ebt_entries_buf_state *state, const unsigned char *base) @@ -1988,22 +1988,23 @@ static int compat_mtw_from_user(struct c /* return size of all matches, watchers or target, including necessary * alignment and padding. */ -static int ebt_size_mwt(struct compat_ebt_entry_mwt *match32, +static int ebt_size_mwt(const struct compat_ebt_entry_mwt *match32, unsigned int size_left, enum compat_mwt type, struct ebt_entries_buf_state *state, const void *base) { + const char *buf = (const char *)match32; int growth = 0; - char *buf; if (size_left == 0) return 0; - buf = (char *) match32; - - while (size_left >= sizeof(*match32)) { + do { struct ebt_entry_match *match_kern; int ret; + if (size_left < sizeof(*match32)) + return -EINVAL; + match_kern = (struct ebt_entry_match *) state->buf_kern_start; if (match_kern) { char *tmp; @@ -2040,22 +2041,18 @@ static int ebt_size_mwt(struct compat_eb if (match_kern) match_kern->match_size = ret; - /* rule should have no remaining data after target */ - if (type == EBT_COMPAT_TARGET && size_left) - return -EINVAL; - match32 = (struct compat_ebt_entry_mwt *) buf; - } + } while (size_left); return growth; } /* called for all ebt_entry structures. */ -static int size_entry_mwt(struct ebt_entry *entry, const unsigned char *base, +static int size_entry_mwt(const struct ebt_entry *entry, const unsigned char *base, unsigned int *total, struct ebt_entries_buf_state *state) { - unsigned int i, j, startoff, new_offset = 0; + unsigned int i, j, startoff, next_expected_off, new_offset = 0; /* stores match/watchers/targets & offset of next struct ebt_entry: */ unsigned int offsets[4]; unsigned int *offsets_update = NULL; @@ -2141,11 +2138,13 @@ static int size_entry_mwt(struct ebt_ent return ret; } - startoff = state->buf_user_offset - startoff; + next_expected_off = state->buf_user_offset - startoff; + if (next_expected_off != entry->next_offset) + return -EINVAL; - if (WARN_ON(*total < startoff)) + if (*total < entry->next_offset) return -EINVAL; - *total -= startoff; + *total -= entry->next_offset; return 0; } From patchwork Thu Jan 2 22:07:36 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234540 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 546E8C3276E for ; Thu, 2 Jan 2020 22:53:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1C3AA21835 for ; Thu, 2 Jan 2020 22:53:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578005607; bh=RAL9D/962cV5DuG9VV8BP8M95uexsqTk0AEQTHpRM2g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=UrE4edubboOUObptPEC2eaDYXYp11sC3eH5LVuir2XzmTShxYCvQuL1/0hMjRJqpV kVu2wi+d5KUYC6DNVuSKMu0SuEyRPCJCffkKEeTTpQC5xIY5vA7rzKsdnqAJLv9uYo NkpcaM8kKaNHyVAwH00WK5+BmlnCjSTS8dnwwQ20= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729064AbgABWVz (ORCPT ); Thu, 2 Jan 2020 17:21:55 -0500 Received: from mail.kernel.org ([198.145.29.99]:41688 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729065AbgABWVy (ORCPT ); Thu, 2 Jan 2020 17:21:54 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 1CE49222C3; Thu, 2 Jan 2020 22:21:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003713; bh=RAL9D/962cV5DuG9VV8BP8M95uexsqTk0AEQTHpRM2g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=sLNL0D6q2rWRKVA33a3FLC+qj+eXCfgVwSawNIgHvtNcpiQSlNVabnHDx6nSzpLPO LbjyzuYIE+YebzVOToDQieL8LScP/mk3agLFTJBKezlqJxSmUw/DtFFWzp26siNNaX uVbmGDXcn8y0wfHaRg/DBOsRRWAb9LFRUjts2z3o= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Eric Dumazet , syzbot , Arnd Bergmann , Jakub Kicinski Subject: [PATCH 4.19 084/114] 6pack,mkiss: fix possible deadlock Date: Thu, 2 Jan 2020 23:07:36 +0100 Message-Id: <20200102220037.655299935@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Eric Dumazet commit 5c9934b6767b16ba60be22ec3cbd4379ad64170d upstream. We got another syzbot report [1] that tells us we must use write_lock_irq()/write_unlock_irq() to avoid possible deadlock. [1] WARNING: inconsistent lock state 5.5.0-rc1-syzkaller #0 Not tainted -------------------------------- inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-R} usage. syz-executor826/9605 [HC1[1]:SC0[0]:HE0:SE1] takes: ffffffff8a128718 (disc_data_lock){+-..}, at: sp_get.isra.0+0x1d/0xf0 drivers/net/ppp/ppp_synctty.c:138 {HARDIRQ-ON-W} state was registered at: lock_acquire+0x190/0x410 kernel/locking/lockdep.c:4485 __raw_write_lock_bh include/linux/rwlock_api_smp.h:203 [inline] _raw_write_lock_bh+0x33/0x50 kernel/locking/spinlock.c:319 sixpack_close+0x1d/0x250 drivers/net/hamradio/6pack.c:657 tty_ldisc_close.isra.0+0x119/0x1a0 drivers/tty/tty_ldisc.c:489 tty_set_ldisc+0x230/0x6b0 drivers/tty/tty_ldisc.c:585 tiocsetd drivers/tty/tty_io.c:2337 [inline] tty_ioctl+0xe8d/0x14f0 drivers/tty/tty_io.c:2597 vfs_ioctl fs/ioctl.c:47 [inline] file_ioctl fs/ioctl.c:545 [inline] do_vfs_ioctl+0x977/0x14e0 fs/ioctl.c:732 ksys_ioctl+0xab/0xd0 fs/ioctl.c:749 __do_sys_ioctl fs/ioctl.c:756 [inline] __se_sys_ioctl fs/ioctl.c:754 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:754 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe irq event stamp: 3946 hardirqs last enabled at (3945): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline] hardirqs last enabled at (3945): [] _raw_spin_unlock_irq+0x23/0x80 kernel/locking/spinlock.c:199 hardirqs last disabled at (3946): [] trace_hardirqs_off_thunk+0x1a/0x1c arch/x86/entry/thunk_64.S:42 softirqs last enabled at (2658): [] spin_unlock_bh include/linux/spinlock.h:383 [inline] softirqs last enabled at (2658): [] clusterip_netdev_event+0x46f/0x670 net/ipv4/netfilter/ipt_CLUSTERIP.c:222 softirqs last disabled at (2656): [] spin_lock_bh include/linux/spinlock.h:343 [inline] softirqs last disabled at (2656): [] clusterip_netdev_event+0x1bb/0x670 net/ipv4/netfilter/ipt_CLUSTERIP.c:196 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(disc_data_lock); lock(disc_data_lock); *** DEADLOCK *** 5 locks held by syz-executor826/9605: #0: ffff8880a905e198 (&tty->legacy_mutex){+.+.}, at: tty_lock+0xc7/0x130 drivers/tty/tty_mutex.c:19 #1: ffffffff899a56c0 (rcu_read_lock){....}, at: mutex_spin_on_owner+0x0/0x330 kernel/locking/mutex.c:413 #2: ffff8880a496a2b0 (&(&i->lock)->rlock){-.-.}, at: spin_lock include/linux/spinlock.h:338 [inline] #2: ffff8880a496a2b0 (&(&i->lock)->rlock){-.-.}, at: serial8250_interrupt+0x2d/0x1a0 drivers/tty/serial/8250/8250_core.c:116 #3: ffffffff8c104048 (&port_lock_key){-.-.}, at: serial8250_handle_irq.part.0+0x24/0x330 drivers/tty/serial/8250/8250_port.c:1823 #4: ffff8880a905e090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref+0x22/0x90 drivers/tty/tty_ldisc.c:288 stack backtrace: CPU: 1 PID: 9605 Comm: syz-executor826 Not tainted 5.5.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x197/0x210 lib/dump_stack.c:118 print_usage_bug.cold+0x327/0x378 kernel/locking/lockdep.c:3101 valid_state kernel/locking/lockdep.c:3112 [inline] mark_lock_irq kernel/locking/lockdep.c:3309 [inline] mark_lock+0xbb4/0x1220 kernel/locking/lockdep.c:3666 mark_usage kernel/locking/lockdep.c:3554 [inline] __lock_acquire+0x1e55/0x4a00 kernel/locking/lockdep.c:3909 lock_acquire+0x190/0x410 kernel/locking/lockdep.c:4485 __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline] _raw_read_lock+0x32/0x50 kernel/locking/spinlock.c:223 sp_get.isra.0+0x1d/0xf0 drivers/net/ppp/ppp_synctty.c:138 sixpack_write_wakeup+0x25/0x340 drivers/net/hamradio/6pack.c:402 tty_wakeup+0xe9/0x120 drivers/tty/tty_io.c:536 tty_port_default_wakeup+0x2b/0x40 drivers/tty/tty_port.c:50 tty_port_tty_wakeup+0x57/0x70 drivers/tty/tty_port.c:387 uart_write_wakeup+0x46/0x70 drivers/tty/serial/serial_core.c:104 serial8250_tx_chars+0x495/0xaf0 drivers/tty/serial/8250/8250_port.c:1761 serial8250_handle_irq.part.0+0x2a2/0x330 drivers/tty/serial/8250/8250_port.c:1834 serial8250_handle_irq drivers/tty/serial/8250/8250_port.c:1820 [inline] serial8250_default_handle_irq+0xc0/0x150 drivers/tty/serial/8250/8250_port.c:1850 serial8250_interrupt+0xf1/0x1a0 drivers/tty/serial/8250/8250_core.c:126 __handle_irq_event_percpu+0x15d/0x970 kernel/irq/handle.c:149 handle_irq_event_percpu+0x74/0x160 kernel/irq/handle.c:189 handle_irq_event+0xa7/0x134 kernel/irq/handle.c:206 handle_edge_irq+0x25e/0x8d0 kernel/irq/chip.c:830 generic_handle_irq_desc include/linux/irqdesc.h:156 [inline] do_IRQ+0xde/0x280 arch/x86/kernel/irq.c:250 common_interrupt+0xf/0xf arch/x86/entry/entry_64.S:607 RIP: 0010:cpu_relax arch/x86/include/asm/processor.h:685 [inline] RIP: 0010:mutex_spin_on_owner+0x247/0x330 kernel/locking/mutex.c:579 Code: c3 be 08 00 00 00 4c 89 e7 e8 e5 06 59 00 4c 89 e0 48 c1 e8 03 42 80 3c 38 00 0f 85 e1 00 00 00 49 8b 04 24 a8 01 75 96 f3 90 2f fe ff ff 0f 0b e8 0d 19 09 00 84 c0 0f 85 ff fd ff ff 48 c7 RSP: 0018:ffffc90001eafa20 EFLAGS: 00000246 ORIG_RAX: ffffffffffffffd7 RAX: 0000000000000000 RBX: ffff88809fd9e0c0 RCX: 1ffffffff13266dd RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000000 RBP: ffffc90001eafa60 R08: 1ffff11013d22898 R09: ffffed1013d22899 R10: ffffed1013d22898 R11: ffff88809e9144c7 R12: ffff8880a905e138 R13: ffff88809e9144c0 R14: 0000000000000000 R15: dffffc0000000000 mutex_optimistic_spin kernel/locking/mutex.c:673 [inline] __mutex_lock_common kernel/locking/mutex.c:962 [inline] __mutex_lock+0x32b/0x13c0 kernel/locking/mutex.c:1106 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1121 tty_lock+0xc7/0x130 drivers/tty/tty_mutex.c:19 tty_release+0xb5/0xe90 drivers/tty/tty_io.c:1665 __fput+0x2ff/0x890 fs/file_table.c:280 ____fput+0x16/0x20 fs/file_table.c:313 task_work_run+0x145/0x1c0 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x8e7/0x2ef0 kernel/exit.c:797 do_group_exit+0x135/0x360 kernel/exit.c:895 __do_sys_exit_group kernel/exit.c:906 [inline] __se_sys_exit_group kernel/exit.c:904 [inline] __x64_sys_exit_group+0x44/0x50 kernel/exit.c:904 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x43fef8 Code: Bad RIP value. RSP: 002b:00007ffdb07d2338 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043fef8 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00000000004bf730 R08: 00000000000000e7 R09: ffffffffffffffd0 R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000006d1180 R14: 0000000000000000 R15: 0000000000000000 Fixes: 6e4e2f811bad ("6pack,mkiss: fix lock inconsistency") Signed-off-by: Eric Dumazet Reported-by: syzbot Cc: Arnd Bergmann Signed-off-by: Jakub Kicinski Signed-off-by: Greg Kroah-Hartman --- drivers/net/hamradio/6pack.c | 4 ++-- drivers/net/hamradio/mkiss.c | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) --- a/drivers/net/hamradio/6pack.c +++ b/drivers/net/hamradio/6pack.c @@ -654,10 +654,10 @@ static void sixpack_close(struct tty_str { struct sixpack *sp; - write_lock_bh(&disc_data_lock); + write_lock_irq(&disc_data_lock); sp = tty->disc_data; tty->disc_data = NULL; - write_unlock_bh(&disc_data_lock); + write_unlock_irq(&disc_data_lock); if (!sp) return; --- a/drivers/net/hamradio/mkiss.c +++ b/drivers/net/hamradio/mkiss.c @@ -783,10 +783,10 @@ static void mkiss_close(struct tty_struc { struct mkiss *ax; - write_lock_bh(&disc_data_lock); + write_lock_irq(&disc_data_lock); ax = tty->disc_data; tty->disc_data = NULL; - write_unlock_bh(&disc_data_lock); + write_unlock_irq(&disc_data_lock); if (!ax) return; From patchwork Thu Jan 2 22:07:38 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234541 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1DCB8C3276C for ; Thu, 2 Jan 2020 22:53:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E70BF20866 for ; Thu, 2 Jan 2020 22:53:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578005599; bh=xp112zKb8v80psbV/puqDOGOBn1/rLffnVodRk8j5xw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=15A16qzFR1K00s4oZbeKjJD9eFua4n7WPH3LrCWE4QyDXdf9lLKB1MgIFiJnB0l5R I6UNaEc7Wk+vlGORGkPtDyecZ9N5+8pd1CcmSzvKOpPMuNgPP8u3BSmNVMa/1ORFdj JIK/e/FfuEighCHggC9vaj0f5KTCCuY3QOR6ClK8= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729118AbgABWxS (ORCPT ); Thu, 2 Jan 2020 17:53:18 -0500 Received: from mail.kernel.org ([198.145.29.99]:41886 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728643AbgABWV6 (ORCPT ); Thu, 2 Jan 2020 17:21:58 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id EA074222C3; Thu, 2 Jan 2020 22:21:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003718; bh=xp112zKb8v80psbV/puqDOGOBn1/rLffnVodRk8j5xw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=pHVmF0g5Mmagb81W1uCllsehk9OtXPlLFcwpGOzGimOsTYgI3SD/x4BYkKTbx+7xc eayvIMtvfBykQmQMnKsxoEPAv1q7IpOQJvo4WiPawxkVVZfXUm4OW2EfTrBgu+Dw9K wE5ss5FqjSOqj1FyDIWd/FhCcp2mej0pSOoZK2rk= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Eric Dumazet , syzbot , "David S. Miller" Subject: [PATCH 4.19 086/114] inetpeer: fix data-race in inet_putpeer / inet_putpeer Date: Thu, 2 Jan 2020 23:07:38 +0100 Message-Id: <20200102220037.855963462@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Eric Dumazet commit 71685eb4ce80ae9c49eff82ca4dd15acab215de9 upstream. We need to explicitely forbid read/store tearing in inet_peer_gc() and inet_putpeer(). The following syzbot report reminds us about inet_putpeer() running without a lock held. BUG: KCSAN: data-race in inet_putpeer / inet_putpeer write to 0xffff888121fb2ed0 of 4 bytes by interrupt on cpu 0: inet_putpeer+0x37/0xa0 net/ipv4/inetpeer.c:240 ip4_frag_free+0x3d/0x50 net/ipv4/ip_fragment.c:102 inet_frag_destroy_rcu+0x58/0x80 net/ipv4/inet_fragment.c:228 __rcu_reclaim kernel/rcu/rcu.h:222 [inline] rcu_do_batch+0x256/0x5b0 kernel/rcu/tree.c:2157 rcu_core+0x369/0x4d0 kernel/rcu/tree.c:2377 rcu_core_si+0x12/0x20 kernel/rcu/tree.c:2386 __do_softirq+0x115/0x33f kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0xbb/0xe0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0xe6/0x280 arch/x86/kernel/apic/apic.c:1137 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830 native_safe_halt+0xe/0x10 arch/x86/kernel/paravirt.c:71 arch_cpu_idle+0x1f/0x30 arch/x86/kernel/process.c:571 default_idle_call+0x1e/0x40 kernel/sched/idle.c:94 cpuidle_idle_call kernel/sched/idle.c:154 [inline] do_idle+0x1af/0x280 kernel/sched/idle.c:263 write to 0xffff888121fb2ed0 of 4 bytes by interrupt on cpu 1: inet_putpeer+0x37/0xa0 net/ipv4/inetpeer.c:240 ip4_frag_free+0x3d/0x50 net/ipv4/ip_fragment.c:102 inet_frag_destroy_rcu+0x58/0x80 net/ipv4/inet_fragment.c:228 __rcu_reclaim kernel/rcu/rcu.h:222 [inline] rcu_do_batch+0x256/0x5b0 kernel/rcu/tree.c:2157 rcu_core+0x369/0x4d0 kernel/rcu/tree.c:2377 rcu_core_si+0x12/0x20 kernel/rcu/tree.c:2386 __do_softirq+0x115/0x33f kernel/softirq.c:292 run_ksoftirqd+0x46/0x60 kernel/softirq.c:603 smpboot_thread_fn+0x37d/0x4a0 kernel/smpboot.c:165 kthread+0x1d4/0x200 drivers/block/aoe/aoecmd.c:1253 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.4.0-rc3+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Fixes: 4b9d9be839fd ("inetpeer: remove unused list") Signed-off-by: Eric Dumazet Reported-by: syzbot Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- net/ipv4/inetpeer.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) --- a/net/ipv4/inetpeer.c +++ b/net/ipv4/inetpeer.c @@ -160,7 +160,12 @@ static void inet_peer_gc(struct inet_pee base->total / inet_peer_threshold * HZ; for (i = 0; i < gc_cnt; i++) { p = gc_stack[i]; - delta = (__u32)jiffies - p->dtime; + + /* The READ_ONCE() pairs with the WRITE_ONCE() + * in inet_putpeer() + */ + delta = (__u32)jiffies - READ_ONCE(p->dtime); + if (delta < ttl || !refcount_dec_if_one(&p->refcnt)) gc_stack[i] = NULL; } @@ -237,7 +242,10 @@ EXPORT_SYMBOL_GPL(inet_getpeer); void inet_putpeer(struct inet_peer *p) { - p->dtime = (__u32)jiffies; + /* The WRITE_ONCE() pairs with itself (we run lockless) + * and the READ_ONCE() in inet_peer_gc() + */ + WRITE_ONCE(p->dtime, (__u32)jiffies); if (refcount_dec_and_test(&p->refcnt)) call_rcu(&p->rcu, inetpeer_free_rcu); From patchwork Thu Jan 2 22:07:41 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234542 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8DB19C3276C for ; Thu, 2 Jan 2020 22:53:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5953320848 for ; Thu, 2 Jan 2020 22:53:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578005593; bh=sjRlUUsGI2JlRaUtjC8OFuSLF8vEs4KJRKVVozL2pUY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=JDXAmIq4U+5v7eQIkPcZG8cH7vJMbXkRZbANEGdBa+YgfV8pdKy2yOhxejgcDVLj3 z+wn93ZjWZ+p6Vf/WZpQgPKJ2X4n3OF/4lOinIukhUvhFSi/dtjIw2/88bScyoyqFc hcKAChrrgoH0LIQd+C7ZFJa+DTADr9og2wX8af1c= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729106AbgABWWH (ORCPT ); Thu, 2 Jan 2020 17:22:07 -0500 Received: from mail.kernel.org ([198.145.29.99]:42170 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729097AbgABWWH (ORCPT ); Thu, 2 Jan 2020 17:22:07 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 251B921D7D; Thu, 2 Jan 2020 22:22:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003725; bh=sjRlUUsGI2JlRaUtjC8OFuSLF8vEs4KJRKVVozL2pUY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YIjdewOH/vjWlDs3uga3quk13AvyOP4oPnFA0eXairWfUOAhi6B/T8OtE79TYs+HE XaanHACfFvOYf9tdex7qSyPtDwmC4L9IKuE8xuLkVTT8fEsObn7hG0vU6cfY0hywDj brAsqxoL9g0w/LnCgJTrD6qKDDrk7WXfyY+YFkRI= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, syzbot , Eric Dumazet , Thomas Gleixner Subject: [PATCH 4.19 089/114] hrtimer: Annotate lockless access to timer->state Date: Thu, 2 Jan 2020 23:07:41 +0100 Message-Id: <20200102220038.167049649@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Eric Dumazet commit 56144737e67329c9aaed15f942d46a6302e2e3d8 upstream. syzbot reported various data-race caused by hrtimer_is_queued() reading timer->state. A READ_ONCE() is required there to silence the warning. Also add the corresponding WRITE_ONCE() when timer->state is set. In remove_hrtimer() the hrtimer_is_queued() helper is open coded to avoid loading timer->state twice. KCSAN reported these cases: BUG: KCSAN: data-race in __remove_hrtimer / tcp_pacing_check write to 0xffff8880b2a7d388 of 1 bytes by interrupt on cpu 0: __remove_hrtimer+0x52/0x130 kernel/time/hrtimer.c:991 __run_hrtimer kernel/time/hrtimer.c:1496 [inline] __hrtimer_run_queues+0x250/0x600 kernel/time/hrtimer.c:1576 hrtimer_run_softirq+0x10e/0x150 kernel/time/hrtimer.c:1593 __do_softirq+0x115/0x33f kernel/softirq.c:292 run_ksoftirqd+0x46/0x60 kernel/softirq.c:603 smpboot_thread_fn+0x37d/0x4a0 kernel/smpboot.c:165 kthread+0x1d4/0x200 drivers/block/aoe/aoecmd.c:1253 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352 read to 0xffff8880b2a7d388 of 1 bytes by task 24652 on cpu 1: tcp_pacing_check net/ipv4/tcp_output.c:2235 [inline] tcp_pacing_check+0xba/0x130 net/ipv4/tcp_output.c:2225 tcp_xmit_retransmit_queue+0x32c/0x5a0 net/ipv4/tcp_output.c:3044 tcp_xmit_recovery+0x7c/0x120 net/ipv4/tcp_input.c:3558 tcp_ack+0x17b6/0x3170 net/ipv4/tcp_input.c:3717 tcp_rcv_established+0x37e/0xf50 net/ipv4/tcp_input.c:5696 tcp_v4_do_rcv+0x381/0x4e0 net/ipv4/tcp_ipv4.c:1561 sk_backlog_rcv include/net/sock.h:945 [inline] __release_sock+0x135/0x1e0 net/core/sock.c:2435 release_sock+0x61/0x160 net/core/sock.c:2951 sk_stream_wait_memory+0x3d7/0x7c0 net/core/stream.c:145 tcp_sendmsg_locked+0xb47/0x1f30 net/ipv4/tcp.c:1393 tcp_sendmsg+0x39/0x60 net/ipv4/tcp.c:1434 inet_sendmsg+0x6d/0x90 net/ipv4/af_inet.c:807 sock_sendmsg_nosec net/socket.c:637 [inline] sock_sendmsg+0x9f/0xc0 net/socket.c:657 BUG: KCSAN: data-race in __remove_hrtimer / __tcp_ack_snd_check write to 0xffff8880a3a65588 of 1 bytes by interrupt on cpu 0: __remove_hrtimer+0x52/0x130 kernel/time/hrtimer.c:991 __run_hrtimer kernel/time/hrtimer.c:1496 [inline] __hrtimer_run_queues+0x250/0x600 kernel/time/hrtimer.c:1576 hrtimer_run_softirq+0x10e/0x150 kernel/time/hrtimer.c:1593 __do_softirq+0x115/0x33f kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0xbb/0xe0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0xe6/0x280 arch/x86/kernel/apic/apic.c:1137 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830 read to 0xffff8880a3a65588 of 1 bytes by task 22891 on cpu 1: __tcp_ack_snd_check+0x415/0x4f0 net/ipv4/tcp_input.c:5265 tcp_ack_snd_check net/ipv4/tcp_input.c:5287 [inline] tcp_rcv_established+0x750/0xf50 net/ipv4/tcp_input.c:5708 tcp_v4_do_rcv+0x381/0x4e0 net/ipv4/tcp_ipv4.c:1561 sk_backlog_rcv include/net/sock.h:945 [inline] __release_sock+0x135/0x1e0 net/core/sock.c:2435 release_sock+0x61/0x160 net/core/sock.c:2951 sk_stream_wait_memory+0x3d7/0x7c0 net/core/stream.c:145 tcp_sendmsg_locked+0xb47/0x1f30 net/ipv4/tcp.c:1393 tcp_sendmsg+0x39/0x60 net/ipv4/tcp.c:1434 inet_sendmsg+0x6d/0x90 net/ipv4/af_inet.c:807 sock_sendmsg_nosec net/socket.c:637 [inline] sock_sendmsg+0x9f/0xc0 net/socket.c:657 __sys_sendto+0x21f/0x320 net/socket.c:1952 __do_sys_sendto net/socket.c:1964 [inline] __se_sys_sendto net/socket.c:1960 [inline] __x64_sys_sendto+0x89/0xb0 net/socket.c:1960 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 24652 Comm: syz-executor.3 Not tainted 5.4.0-rc3+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ tglx: Added comments ] Reported-by: syzbot Signed-off-by: Eric Dumazet Signed-off-by: Thomas Gleixner Link: https://lkml.kernel.org/r/20191106174804.74723-1-edumazet@google.com Signed-off-by: Greg Kroah-Hartman --- include/linux/hrtimer.h | 14 ++++++++++---- kernel/time/hrtimer.c | 11 +++++++---- 2 files changed, 17 insertions(+), 8 deletions(-) --- a/include/linux/hrtimer.h +++ b/include/linux/hrtimer.h @@ -430,12 +430,18 @@ extern u64 hrtimer_next_event_without(co extern bool hrtimer_active(const struct hrtimer *timer); -/* - * Helper function to check, whether the timer is on one of the queues +/** + * hrtimer_is_queued = check, whether the timer is on one of the queues + * @timer: Timer to check + * + * Returns: True if the timer is queued, false otherwise + * + * The function can be used lockless, but it gives only a current snapshot. */ -static inline int hrtimer_is_queued(struct hrtimer *timer) +static inline bool hrtimer_is_queued(struct hrtimer *timer) { - return timer->state & HRTIMER_STATE_ENQUEUED; + /* The READ_ONCE pairs with the update functions of timer->state */ + return !!(READ_ONCE(timer->state) & HRTIMER_STATE_ENQUEUED); } /* --- a/kernel/time/hrtimer.c +++ b/kernel/time/hrtimer.c @@ -955,7 +955,8 @@ static int enqueue_hrtimer(struct hrtime base->cpu_base->active_bases |= 1 << base->index; - timer->state = HRTIMER_STATE_ENQUEUED; + /* Pairs with the lockless read in hrtimer_is_queued() */ + WRITE_ONCE(timer->state, HRTIMER_STATE_ENQUEUED); return timerqueue_add(&base->active, &timer->node); } @@ -977,7 +978,8 @@ static void __remove_hrtimer(struct hrti struct hrtimer_cpu_base *cpu_base = base->cpu_base; u8 state = timer->state; - timer->state = newstate; + /* Pairs with the lockless read in hrtimer_is_queued() */ + WRITE_ONCE(timer->state, newstate); if (!(state & HRTIMER_STATE_ENQUEUED)) return; @@ -1002,8 +1004,9 @@ static void __remove_hrtimer(struct hrti static inline int remove_hrtimer(struct hrtimer *timer, struct hrtimer_clock_base *base, bool restart) { - if (hrtimer_is_queued(timer)) { - u8 state = timer->state; + u8 state = timer->state; + + if (state & HRTIMER_STATE_ENQUEUED) { int reprogram; /* From patchwork Thu Jan 2 22:07:42 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234534 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7E7D9C3276D for ; Thu, 2 Jan 2020 22:54:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 494AA21D7D for ; Thu, 2 Jan 2020 22:54:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578005647; bh=PokvHP29eWUB8qkmtCFYFZdQErIwko2O5Re8dgS8JfE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=02+ySZVGOt1KKg9AqFJI9/txb9vyv11bdwB6uSKyRwq3MDgR3v/zgEIStRobhWTzk Ofnk8KO2V1+YNrxdEjgO2XDRBaRrzX4ZxSGwjtZ/bWuVyqHDfKm6T7T+wB5ZkG63hO A2o9vekqg5zquq1EfUSuSooUaAuLHnt9njEf61l0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726358AbgABWWJ (ORCPT ); Thu, 2 Jan 2020 17:22:09 -0500 Received: from mail.kernel.org ([198.145.29.99]:42272 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729102AbgABWWI (ORCPT ); Thu, 2 Jan 2020 17:22:08 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 948DA222C3; Thu, 2 Jan 2020 22:22:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003728; bh=PokvHP29eWUB8qkmtCFYFZdQErIwko2O5Re8dgS8JfE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kbLMKAZXB600WRFOBsGkz01rdt89Cw1z2V0gBf4fLSy5iFxaA+O1GY2SwkRPXIO6H mv2EQMuhsCFm1KH1x7b4ALyhVA7csSBrmOIvuaaLAo7ttlpbOJFl/kawYjepzfqc5X GA58c2xauwEkPAf2+iBDdMuiwfy+uC7w2I3og69o= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Netanel Belgazal , "David S. Miller" Subject: [PATCH 4.19 090/114] net: ena: fix napi handler misbehavior when the napi budget is zero Date: Thu, 2 Jan 2020 23:07:42 +0100 Message-Id: <20200102220038.258393874@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Netanel Belgazal [ Upstream commit 24dee0c7478d1a1e00abdf5625b7f921467325dc ] In netpoll the napi handler could be called with budget equal to zero. Current ENA napi handler doesn't take that into consideration. The napi handler handles Rx packets in a do-while loop. Currently, the budget check happens only after decrementing the budget, therefore the napi handler, in rare cases, could run over MAX_INT packets. In addition to that, this moves all budget related variables to int calculation and stop mixing u32 to avoid ambiguity Fixes: 1738cd3ed342 ("net: ena: Add a driver for Amazon Elastic Network Adapters (ENA)") Signed-off-by: Netanel Belgazal Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- drivers/net/ethernet/amazon/ena/ena_netdev.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) --- a/drivers/net/ethernet/amazon/ena/ena_netdev.c +++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c @@ -1197,8 +1197,8 @@ static int ena_io_poll(struct napi_struc struct ena_napi *ena_napi = container_of(napi, struct ena_napi, napi); struct ena_ring *tx_ring, *rx_ring; - u32 tx_work_done; - u32 rx_work_done; + int tx_work_done; + int rx_work_done = 0; int tx_budget; int napi_comp_call = 0; int ret; @@ -1215,7 +1215,11 @@ static int ena_io_poll(struct napi_struc } tx_work_done = ena_clean_tx_irq(tx_ring, tx_budget); - rx_work_done = ena_clean_rx_irq(rx_ring, napi, budget); + /* On netpoll the budget is zero and the handler should only clean the + * tx completions. + */ + if (likely(budget)) + rx_work_done = ena_clean_rx_irq(rx_ring, napi, budget); /* If the device is about to reset or down, avoid unmask * the interrupt and return 0 so NAPI won't reschedule From patchwork Thu Jan 2 22:07:44 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234756 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F30FCC3276E for ; Thu, 2 Jan 2020 22:22:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C3960222C3 for ; Thu, 2 Jan 2020 22:22:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003738; bh=9N5Do3eHMPg3N2LbGNZ8XxcUabmcnKwWjINHbtRGIks=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=IirZwgJXx7gThft+ZCDMmtxRB24Ts2YzpnBQRLfVgXjSlzWaAcpulLg/Hn0IzyffY uTzMRwuI/0+himPA60oHK1V6dLMSgeCQHTEp+aQta1xWg1phyiD47GnMGb0mTxbeB+ kIRGK5wmaVUXRAlIhN5hlLYcUyAs5OO5yDAM12/M= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729117AbgABWWQ (ORCPT ); Thu, 2 Jan 2020 17:22:16 -0500 Received: from mail.kernel.org ([198.145.29.99]:42536 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727532AbgABWWQ (ORCPT ); Thu, 2 Jan 2020 17:22:16 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id DE48C21D7D; Thu, 2 Jan 2020 22:22:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003735; bh=9N5Do3eHMPg3N2LbGNZ8XxcUabmcnKwWjINHbtRGIks=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=losBAUmAa45ehbKG0PGIm2M501Yfm+a4Cnu9XHkaMZ935ZVEmojbw2fbqqw9Y5Hvm dB1DoklQ+ulgqewouNbFcPJWdHZWv+9scdbJmlldv7yy+4ECdQ8WXnIJN9ljmvCu6d 4oU2qVAdaUS4c+E01Z5qE8iecGLCLKD/4MTvT0P8= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Martin Blumenstingl , Andrew Lunn , "David S. Miller" Subject: [PATCH 4.19 092/114] net: stmmac: dwmac-meson8b: Fix the RGMII TX delay on Meson8b/8m2 SoCs Date: Thu, 2 Jan 2020 23:07:44 +0100 Message-Id: <20200102220038.435278242@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Martin Blumenstingl [ Upstream commit bd6f48546b9cb7a785344fc78058c420923d7ed8 ] GXBB and newer SoCs use the fixed FCLK_DIV2 (1GHz) clock as input for the m250_sel clock. Meson8b and Meson8m2 use MPLL2 instead, whose rate can be adjusted at runtime. So far we have been running MPLL2 with ~250MHz (and the internal m250_div with value 1), which worked enough that we could transfer data with an TX delay of 4ns. Unfortunately there is high packet loss with an RGMII PHY when transferring data (receiving data works fine though). Odroid-C1's u-boot is running with a TX delay of only 2ns as well as the internal m250_div set to 2 - no lost (TX) packets can be observed with that setting in u-boot. Manual testing has shown that the TX packet loss goes away when using the following settings in Linux (the vendor kernel uses the same settings): - MPLL2 clock set to ~500MHz - m250_div set to 2 - TX delay set to 2ns on the MAC side Update the m250_div divider settings to only accept dividers greater or equal 2 to fix the TX delay generated by the MAC. iperf3 results before the change: [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 182 MBytes 153 Mbits/sec 514 sender [ 5] 0.00-10.00 sec 182 MBytes 152 Mbits/sec receiver iperf3 results after the change (including an updated TX delay of 2ns): [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-10.00 sec 927 MBytes 778 Mbits/sec 0 sender [ 5] 0.00-10.01 sec 927 MBytes 777 Mbits/sec receiver Fixes: 4f6a71b84e1afd ("net: stmmac: dwmac-meson8b: fix internal RGMII clock configuration") Signed-off-by: Martin Blumenstingl Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c @@ -118,6 +118,14 @@ static int meson8b_init_rgmii_tx_clk(str struct device *dev = dwmac->dev; const char *parent_name, *mux_parent_names[MUX_CLK_NUM_PARENTS]; struct meson8b_dwmac_clk_configs *clk_configs; + static const struct clk_div_table div_table[] = { + { .div = 2, .val = 2, }, + { .div = 3, .val = 3, }, + { .div = 4, .val = 4, }, + { .div = 5, .val = 5, }, + { .div = 6, .val = 6, }, + { .div = 7, .val = 7, }, + }; clk_configs = devm_kzalloc(dev, sizeof(*clk_configs), GFP_KERNEL); if (!clk_configs) @@ -152,9 +160,9 @@ static int meson8b_init_rgmii_tx_clk(str clk_configs->m250_div.reg = dwmac->regs + PRG_ETH0; clk_configs->m250_div.shift = PRG_ETH0_CLK_M250_DIV_SHIFT; clk_configs->m250_div.width = PRG_ETH0_CLK_M250_DIV_WIDTH; - clk_configs->m250_div.flags = CLK_DIVIDER_ONE_BASED | - CLK_DIVIDER_ALLOW_ZERO | - CLK_DIVIDER_ROUND_CLOSEST; + clk_configs->m250_div.table = div_table; + clk_configs->m250_div.flags = CLK_DIVIDER_ALLOW_ZERO | + CLK_DIVIDER_ROUND_CLOSEST; clk = meson8b_dwmac_register_clk(dwmac, "m250_div", &parent_name, 1, &clk_divider_ops, &clk_configs->m250_div.hw); From patchwork Thu Jan 2 22:07:46 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234544 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id ECD0DC3276C for ; Thu, 2 Jan 2020 22:52:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B8CCA20866 for ; Thu, 2 Jan 2020 22:52:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578005577; bh=QCKbD5lsG3y8EzqeBjyyj/2nvanhz5ueWZviiPgGRrQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=yVjPbXTlIlEfIcg2ALrY3JhhQTJDP8HFCkP10tyK2SUlQS2Io3R99j8cfpwSba+/t pGZf/OAa2129NznYLX5Z3+xnOQen/WPdmud5glER521SJk11ChhGoulbO6w3gY5UtF TSed62w1UCCUy94kEDIEAa6KtM9pCLNzIxzr1V7Y= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727815AbgABWWV (ORCPT ); Thu, 2 Jan 2020 17:22:21 -0500 Received: from mail.kernel.org ([198.145.29.99]:42752 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729131AbgABWWU (ORCPT ); Thu, 2 Jan 2020 17:22:20 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id AB75321D7D; Thu, 2 Jan 2020 22:22:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003740; bh=QCKbD5lsG3y8EzqeBjyyj/2nvanhz5ueWZviiPgGRrQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ViRX9ZtQbRDdVCmKFZCeA6oOxUj9ZMC/7UFLU1qXnGGxcizZ4/UXYxOss0ljht4Py 42aArmlIqJex4N4W2aliOtD6o+10Ln7hIvGDkKGrymQswnyfamwiypnDIOCVq7F3UH B/9PYr6YhUCjCApraTTp/VwhuGQX/6dak0YELhRA= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Cambda Zhu , Eric Dumazet , "David S. Miller" Subject: [PATCH 4.19 094/114] tcp: Fix highest_sack and highest_sack_seq Date: Thu, 2 Jan 2020 23:07:46 +0100 Message-Id: <20200102220038.629285760@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Cambda Zhu [ Upstream commit 853697504de043ff0bfd815bd3a64de1dce73dc7 ] >From commit 50895b9de1d3 ("tcp: highest_sack fix"), the logic about setting tp->highest_sack to the head of the send queue was removed. Of course the logic is error prone, but it is logical. Before we remove the pointer to the highest sack skb and use the seq instead, we need to set tp->highest_sack to NULL when there is no skb after the last sack, and then replace NULL with the real skb when new skb inserted into the rtx queue, because the NULL means the highest sack seq is tp->snd_nxt. If tp->highest_sack is NULL and new data sent, the next ACK with sack option will increase tp->reordering unexpectedly. This patch sets tp->highest_sack to the tail of the rtx queue if it's NULL and new data is sent. The patch keeps the rule that the highest_sack can only be maintained by sack processing, except for this only case. Fixes: 50895b9de1d3 ("tcp: highest_sack fix") Signed-off-by: Cambda Zhu Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- net/ipv4/tcp_output.c | 3 +++ 1 file changed, 3 insertions(+) --- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -60,6 +60,9 @@ static void tcp_event_new_data_sent(stru __skb_unlink(skb, &sk->sk_write_queue); tcp_rbtree_insert(&sk->tcp_rtx_queue, skb); + if (tp->highest_sack == NULL) + tp->highest_sack = skb; + tp->packets_out += tcp_skb_pcount(skb); if (!prior_packets || icsk->icsk_pending == ICSK_TIME_LOSS_PROBE) tcp_rearm_rto(sk); From patchwork Thu Jan 2 22:07:47 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234545 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D3B4FC3276C for ; Thu, 2 Jan 2020 22:52:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A68A720866 for ; Thu, 2 Jan 2020 22:52:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578005575; bh=Wsgxuzfmf8MpLBh4cCjlsXtj18cok1RUznmA3pkYYJA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ZFruz04Tlz3DLN80R3HRsCp4sxROxCv/Fi5d5p0hA83B04Ylx/IITarKh4d28u3Ls As34pbgt4OQzAADE56KsiSeRreJu3eN+h2K3YgP/JDriOc6PCxY0ZZlTy+0E5/Dsa7 EnadApQn2f3NEpSJ4HM8GbQD/xnAwknDFoDu7cew= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728791AbgABWW0 (ORCPT ); Thu, 2 Jan 2020 17:22:26 -0500 Received: from mail.kernel.org ([198.145.29.99]:42816 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727800AbgABWWW (ORCPT ); Thu, 2 Jan 2020 17:22:22 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 18B2520863; Thu, 2 Jan 2020 22:22:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003742; bh=Wsgxuzfmf8MpLBh4cCjlsXtj18cok1RUznmA3pkYYJA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=iVkg/xK3xfXrKH0P9f+IS0Frc9VqqmoKtYs3+4u9QsJBuJ3TJAzkcxGP/fEajwe0/ RA5FLTtLwJK796aCkPenUWwNXP7wr1FS4aMTlCu8cxyTiRaNIR88QXirgJfiehipbx 7JF9GS5JNaRuKD2QCYDj7l/ZbUC9HdmOB9tceBvo= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Antonio Messina , "David S. Miller" Subject: [PATCH 4.19 095/114] udp: fix integer overflow while computing available space in sk_rcvbuf Date: Thu, 2 Jan 2020 23:07:47 +0100 Message-Id: <20200102220038.721516462@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Antonio Messina [ Upstream commit feed8a4fc9d46c3126fb9fcae0e9248270c6321a ] When the size of the receive buffer for a socket is close to 2^31 when computing if we have enough space in the buffer to copy a packet from the queue to the buffer we might hit an integer overflow. When an user set net.core.rmem_default to a value close to 2^31 UDP packets are dropped because of this overflow. This can be visible, for instance, with failure to resolve hostnames. This can be fixed by casting sk_rcvbuf (which is an int) to unsigned int, similarly to how it is done in TCP. Signed-off-by: Antonio Messina Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- net/ipv4/udp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -1412,7 +1412,7 @@ int __udp_enqueue_schedule_skb(struct so * queue contains some other skb */ rmem = atomic_add_return(size, &sk->sk_rmem_alloc); - if (rmem > (size + sk->sk_rcvbuf)) + if (rmem > (size + (unsigned int)sk->sk_rcvbuf)) goto uncharge_drop; spin_lock(&list->lock); From patchwork Thu Jan 2 22:07:50 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234546 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2406EC3276C for ; Thu, 2 Jan 2020 22:52:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EDAE721835 for ; Thu, 2 Jan 2020 22:52:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578005568; bh=OgM9MrVpmk2MQlLVEKOHu21cL5Jv8U4SBPAvaoSO6Fc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=M8Xqe/lsVqGwsi0Qb/GzCAU0ZFTPb5Q5UanIvkKmkjUeIGanf+tJlQwD5pbLKGvQX 6IXC4ROKJuItc++ziPn0Rz/qZyqSUMSk/1HfxuZdRQ5YS0VpxeCpnmg6GyyPRieNvC V2t0akcD3PvyDvb5j6sOrxzTJJiDQdP6lvMeQB/I= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729142AbgABWWa (ORCPT ); Thu, 2 Jan 2020 17:22:30 -0500 Received: from mail.kernel.org ([198.145.29.99]:43112 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728798AbgABWWa (ORCPT ); Thu, 2 Jan 2020 17:22:30 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 56D3F227BF; Thu, 2 Jan 2020 22:22:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003749; bh=OgM9MrVpmk2MQlLVEKOHu21cL5Jv8U4SBPAvaoSO6Fc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=xJuH2NOWH7CnASC7Ou0xzBgu8ao2ihg2E4O1HwJSnPkCpr5Hd9VJ52kDZo7CpO661 I6pnJGS6TgjyddlMOGBXVDdwxVo3bmM8MNpkR7zNF+5jGr5pusQcESkVDhm4jfLdIa p6gGEE82ItPeDx/217R4Oj/yGoh4rXtnRTRhLz9Y= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jianlin Shi , Guillaume Nault , David Ahern , Hangbin Liu , "David S. Miller" Subject: [PATCH 4.19 098/114] ip6_gre: do not confirm neighbor when do pmtu update Date: Thu, 2 Jan 2020 23:07:50 +0100 Message-Id: <20200102220039.090563518@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Hangbin Liu [ Upstream commit 675d76ad0ad5bf41c9a129772ef0aba8f57ea9a7 ] When we do ipv6 gre pmtu update, we will also do neigh confirm currently. This will cause the neigh cache be refreshed and set to REACHABLE before xmit. But if the remote mac address changed, e.g. device is deleted and recreated, we will not able to notice this and still use the old mac address as the neigh cache is REACHABLE. Fix this by disable neigh confirm when do pmtu update v5: No change. v4: No change. v3: Do not remove dst_confirm_neigh, but add a new bool parameter in dst_ops.update_pmtu to control whether we should do neighbor confirm. Also split the big patch to small ones for each area. v2: Remove dst_confirm_neigh in __ip6_rt_update_pmtu. Reported-by: Jianlin Shi Reviewed-by: Guillaume Nault Acked-by: David Ahern Signed-off-by: Hangbin Liu Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- net/ipv6/ip6_gre.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/net/ipv6/ip6_gre.c +++ b/net/ipv6/ip6_gre.c @@ -1060,7 +1060,7 @@ static netdev_tx_t ip6erspan_tunnel_xmit /* TooBig packet may have updated dst->dev's mtu */ if (!t->parms.collect_md && dst && dst_mtu(dst) > dst->dev->mtu) - dst->ops->update_pmtu(dst, NULL, skb, dst->dev->mtu, true); + dst->ops->update_pmtu(dst, NULL, skb, dst->dev->mtu, false); err = ip6_tnl_xmit(skb, dev, dsfield, &fl6, encap_limit, &mtu, NEXTHDR_GRE); From patchwork Thu Jan 2 22:07:52 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234755 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0A5ABC3276C for ; Thu, 2 Jan 2020 22:22:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C30D620866 for ; Thu, 2 Jan 2020 22:22:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003757; bh=ZjUObq3nlAjR3r0rrLR5jrSnyaPlZhsIyeLxybNfWYA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Yne2D4LWYKgneTU2cpYmGqtGttm1Z3FdOqZSGS63tBML1DM4ptEldjecxCLbgJOgn dC/KtBtvIFOVlgwBYnN0femsrT09zu0tx1iG4lpZRU/MWADoAf3VkDwq4/geoa8Cn8 sYz8EXdXqWEWB7X0dWwNLDF/RvCFOSZGQIxd2IYc= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729008AbgABWWg (ORCPT ); Thu, 2 Jan 2020 17:22:36 -0500 Received: from mail.kernel.org ([198.145.29.99]:43282 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729155AbgABWWf (ORCPT ); Thu, 2 Jan 2020 17:22:35 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 2F0B020866; Thu, 2 Jan 2020 22:22:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003754; bh=ZjUObq3nlAjR3r0rrLR5jrSnyaPlZhsIyeLxybNfWYA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ufmMvDQuCTF36tXFwgKcmB3loatzjX/YJi5T1rAfuUkKiL+oOEY3FFvBGDIRxML+x uDO6J9I9Jjoq76egckBqpQ2IARCXU9iX0I8ZCeKRcSLvaDI7NQ3xpGQ7Wig4JF2OK/ LOaGZ6iglbkNGkhQhfB0I3FQcOTYDVP0b8gEHPL8= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Guillaume Nault , David Ahern , Hangbin Liu , "David S. Miller" Subject: [PATCH 4.19 100/114] net/dst: add new function skb_dst_update_pmtu_no_confirm Date: Thu, 2 Jan 2020 23:07:52 +0100 Message-Id: <20200102220039.284323737@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Hangbin Liu [ Upstream commit 07dc35c6e3cc3c001915d05f5bf21f80a39a0970 ] Add a new function skb_dst_update_pmtu_no_confirm() for callers who need update pmtu but should not do neighbor confirm. v5: No change. v4: No change. v3: Do not remove dst_confirm_neigh, but add a new bool parameter in dst_ops.update_pmtu to control whether we should do neighbor confirm. Also split the big patch to small ones for each area. v2: Remove dst_confirm_neigh in __ip6_rt_update_pmtu. Reviewed-by: Guillaume Nault Acked-by: David Ahern Signed-off-by: Hangbin Liu Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- include/net/dst.h | 9 +++++++++ 1 file changed, 9 insertions(+) --- a/include/net/dst.h +++ b/include/net/dst.h @@ -530,6 +530,15 @@ static inline void skb_dst_update_pmtu(s dst->ops->update_pmtu(dst, NULL, skb, mtu, true); } +/* update dst pmtu but not do neighbor confirm */ +static inline void skb_dst_update_pmtu_no_confirm(struct sk_buff *skb, u32 mtu) +{ + struct dst_entry *dst = skb_dst(skb); + + if (dst && dst->ops->update_pmtu) + dst->ops->update_pmtu(dst, NULL, skb, mtu, false); +} + static inline void skb_tunnel_check_pmtu(struct sk_buff *skb, struct dst_entry *encap_dst, int headroom) From patchwork Thu Jan 2 22:07:53 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234749 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 18B31C3276D for ; Thu, 2 Jan 2020 22:23:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E159A20866 for ; Thu, 2 Jan 2020 22:23:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003810; bh=BSA/pcBUGl1nwFwAirAYzR7/hzKPhS7OOnadprGSpm0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=jEzQQGA67hMf8tFNdGgfj3YgyltnlR87cx84d55rrMOGe953b5nS4aPxr8iNxgV33 5cO25X1oXp5+zYICeInuFBCtPAZNs1xXSf4KCnN/C0QZYUnaEuJbNDhx9L+dEtxipU aZrNPU8BeRjwHzcon4pWfmoQfeibBmwP0w7l4Ims= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729229AbgABWX2 (ORCPT ); Thu, 2 Jan 2020 17:23:28 -0500 Received: from mail.kernel.org ([198.145.29.99]:45642 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729228AbgABWX2 (ORCPT ); Thu, 2 Jan 2020 17:23:28 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id ED84620866; Thu, 2 Jan 2020 22:23:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003807; bh=BSA/pcBUGl1nwFwAirAYzR7/hzKPhS7OOnadprGSpm0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=1uZfoBniFXz62yG8/sK2J1ehnxOaqnwTRuF3vp6GUZgD3n6qMoKXnM3IjgjmYaXet ZZ/s/rotmmUt/t9+cWCaiyDr050eeaXrY5sV2Dw530iu6fzj/eim+oCGSWl01raIZh Y9lWKD9zwEoFhPOYUpiDllAvjWIaXrXiyyQiE/kU= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Guillaume Nault , David Ahern , Hangbin Liu , "David S. Miller" Subject: [PATCH 4.19 101/114] tunnel: do not confirm neighbor when do pmtu update Date: Thu, 2 Jan 2020 23:07:53 +0100 Message-Id: <20200102220039.383709605@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Hangbin Liu [ Upstream commit 7a1592bcb15d71400a98632727791d1e68ea0ee8 ] When do tunnel PMTU update and calls __ip6_rt_update_pmtu() in the end, we should not call dst_confirm_neigh() as there is no two-way communication. v5: No Change. v4: Update commit description v3: Do not remove dst_confirm_neigh, but add a new bool parameter in dst_ops.update_pmtu to control whether we should do neighbor confirm. Also split the big patch to small ones for each area. v2: Remove dst_confirm_neigh in __ip6_rt_update_pmtu. Fixes: 0dec879f636f ("net: use dst_confirm_neigh for UDP, RAW, ICMP, L2TP") Reviewed-by: Guillaume Nault Tested-by: Guillaume Nault Acked-by: David Ahern Signed-off-by: Hangbin Liu Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- net/ipv4/ip_tunnel.c | 2 +- net/ipv6/ip6_tunnel.c | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) --- a/net/ipv4/ip_tunnel.c +++ b/net/ipv4/ip_tunnel.c @@ -513,7 +513,7 @@ static int tnl_update_pmtu(struct net_de else mtu = skb_dst(skb) ? dst_mtu(skb_dst(skb)) : dev->mtu; - skb_dst_update_pmtu(skb, mtu); + skb_dst_update_pmtu_no_confirm(skb, mtu); if (skb->protocol == htons(ETH_P_IP)) { if (!skb_is_gso(skb) && --- a/net/ipv6/ip6_tunnel.c +++ b/net/ipv6/ip6_tunnel.c @@ -645,7 +645,7 @@ ip4ip6_err(struct sk_buff *skb, struct i if (rel_info > dst_mtu(skb_dst(skb2))) goto out; - skb_dst_update_pmtu(skb2, rel_info); + skb_dst_update_pmtu_no_confirm(skb2, rel_info); } icmp_send(skb2, rel_type, rel_code, htonl(rel_info)); @@ -1137,7 +1137,7 @@ route_lookup: mtu = max(mtu, skb->protocol == htons(ETH_P_IPV6) ? IPV6_MIN_MTU : IPV4_MIN_MTU); - skb_dst_update_pmtu(skb, mtu); + skb_dst_update_pmtu_no_confirm(skb, mtu); if (skb->len - t->tun_hlen - eth_hlen > mtu && !skb_is_gso(skb)) { *pmtu = mtu; err = -EMSGSIZE; From patchwork Thu Jan 2 22:07:56 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234751 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BF7AFC3276D for ; Thu, 2 Jan 2020 22:23:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 85DA821835 for ; Thu, 2 Jan 2020 22:23:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003796; bh=d4sefYQ2m87dOwAhA8yb6VvH2WIHKektXLZdHJodcCg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=N7zxw6mvV3ry93tJlkBElmilfawwin7QfTxCqzgtMSM0Lwa/GGsL52FwcEfQkdEGd TCdaSBJ1bqmQDarTpTlNlr2BUqy5MnwxhWT7BqAwZBYktYgPDrMlKq4HxZMtfNvwQF 7O6eYsXozTmJEht5ZG3NYzrw6RT24FVXlYk/bP4A= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727898AbgABWXP (ORCPT ); Thu, 2 Jan 2020 17:23:15 -0500 Received: from mail.kernel.org ([198.145.29.99]:44808 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729221AbgABWXL (ORCPT ); Thu, 2 Jan 2020 17:23:11 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 22F9020863; Thu, 2 Jan 2020 22:23:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003790; bh=d4sefYQ2m87dOwAhA8yb6VvH2WIHKektXLZdHJodcCg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=UOed+SrYOFyNXZy6DQxe5WKgOEB1TI8oFCxRKK+1ZMM7xtKcVOioCak1Zo1/uuHvd Qdq5bBgMjRwk8QX30g6XtOvjUMGWH67xloV+0huh2BFdabFp8J+PdKxHDEbFETxUll V4XAH4sBV2KbDud5vs8atn59BQ4HZE5UvVLFE6zc= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Guillaume Nault , David Ahern , Hangbin Liu , "David S. Miller" Subject: [PATCH 4.19 104/114] net/dst: do not confirm neighbor for vxlan and geneve pmtu update Date: Thu, 2 Jan 2020 23:07:56 +0100 Message-Id: <20200102220039.676886345@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Hangbin Liu [ Upstream commit f081042d128a0c7acbd67611def62e1b52e2d294 ] When do IPv6 tunnel PMTU update and calls __ip6_rt_update_pmtu() in the end, we should not call dst_confirm_neigh() as there is no two-way communication. So disable the neigh confirm for vxlan and geneve pmtu update. v5: No change. v4: No change. v3: Do not remove dst_confirm_neigh, but add a new bool parameter in dst_ops.update_pmtu to control whether we should do neighbor confirm. Also split the big patch to small ones for each area. v2: Remove dst_confirm_neigh in __ip6_rt_update_pmtu. Fixes: a93bf0ff4490 ("vxlan: update skb dst pmtu on tx path") Fixes: 52a589d51f10 ("geneve: update skb dst pmtu on tx path") Reviewed-by: Guillaume Nault Tested-by: Guillaume Nault Acked-by: David Ahern Signed-off-by: Hangbin Liu Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- include/net/dst.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/include/net/dst.h +++ b/include/net/dst.h @@ -546,7 +546,7 @@ static inline void skb_tunnel_check_pmtu u32 encap_mtu = dst_mtu(encap_dst); if (skb->len > encap_mtu - headroom) - skb_dst_update_pmtu(skb, encap_mtu - headroom); + skb_dst_update_pmtu_no_confirm(skb, encap_mtu - headroom); } #endif /* _NET_DST_H */ From patchwork Thu Jan 2 22:07:57 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234745 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3D40EC3276C for ; Thu, 2 Jan 2020 22:24:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1113921D7D for ; Thu, 2 Jan 2020 22:24:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003853; bh=Gl7WlCQFsv1tQVdB+vyM0peTq6LavuUkmFkh6vlNFR4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=aMvLKbEDpDvZPWAC8HeNt5NYPa/EV4i53Cp1bLcHlfPjs6NGgvo9Vyu9N6+GFR5jK OP3GefirygmnimAtMbGQdksFMznf4iEA1ierf9m7ot7tjZ92TqcWBOCdZZj2yrH49p Xd8lEoGYJiz2KitA9bFXzUgchW9eahrtDJd6Ehcg= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729368AbgABWYL (ORCPT ); Thu, 2 Jan 2020 17:24:11 -0500 Received: from mail.kernel.org ([198.145.29.99]:44894 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729255AbgABWXN (ORCPT ); Thu, 2 Jan 2020 17:23:13 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 836CE20863; Thu, 2 Jan 2020 22:23:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003793; bh=Gl7WlCQFsv1tQVdB+vyM0peTq6LavuUkmFkh6vlNFR4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=lCkJc8HluEP/GM7Ufon2qAbjZZJjFja25gukhbiriBLKpeJbKSKmHiXyntaNp2rzJ 8WwmZwiShj71mjKPrQEj9+WJtXDZr8byc2jdcxYyzy6Qv7k2pTTthQVx8MQygWuZmv KdnBtpevxBiyWY/mtL+Wb99iZQARXzfLG+7mJ9gc= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Taehee Yoo , Jakub Kicinski Subject: [PATCH 4.19 105/114] gtp: do not allow adding duplicate tid and ms_addr pdp context Date: Thu, 2 Jan 2020 23:07:57 +0100 Message-Id: <20200102220039.760073463@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Taehee Yoo [ Upstream commit 6b01b1d9b2d38dc84ac398bfe9f00baff06a31e5 ] GTP RX packet path lookups pdp context with TID. If duplicate TID pdp contexts are existing in the list, it couldn't select correct pdp context. So, TID value should be unique. GTP TX packet path lookups pdp context with ms_addr. If duplicate ms_addr pdp contexts are existing in the list, it couldn't select correct pdp context. So, ms_addr value should be unique. Fixes: 459aa660eb1d ("gtp: add initial driver for datapath of GPRS Tunneling Protocol (GTP-U)") Signed-off-by: Taehee Yoo Signed-off-by: Jakub Kicinski Signed-off-by: Greg Kroah-Hartman --- drivers/net/gtp.c | 32 ++++++++++++++++++++++---------- 1 file changed, 22 insertions(+), 10 deletions(-) --- a/drivers/net/gtp.c +++ b/drivers/net/gtp.c @@ -931,24 +931,31 @@ static void ipv4_pdp_fill(struct pdp_ctx } } -static int ipv4_pdp_add(struct gtp_dev *gtp, struct sock *sk, - struct genl_info *info) +static int gtp_pdp_add(struct gtp_dev *gtp, struct sock *sk, + struct genl_info *info) { + struct pdp_ctx *pctx, *pctx_tid = NULL; struct net_device *dev = gtp->dev; u32 hash_ms, hash_tid = 0; - struct pdp_ctx *pctx; + unsigned int version; bool found = false; __be32 ms_addr; ms_addr = nla_get_be32(info->attrs[GTPA_MS_ADDRESS]); hash_ms = ipv4_hashfn(ms_addr) % gtp->hash_size; + version = nla_get_u32(info->attrs[GTPA_VERSION]); - hlist_for_each_entry_rcu(pctx, >p->addr_hash[hash_ms], hlist_addr) { - if (pctx->ms_addr_ip4.s_addr == ms_addr) { - found = true; - break; - } - } + pctx = ipv4_pdp_find(gtp, ms_addr); + if (pctx) + found = true; + if (version == GTP_V0) + pctx_tid = gtp0_pdp_find(gtp, + nla_get_u64(info->attrs[GTPA_TID])); + else if (version == GTP_V1) + pctx_tid = gtp1_pdp_find(gtp, + nla_get_u32(info->attrs[GTPA_I_TEI])); + if (pctx_tid) + found = true; if (found) { if (info->nlhdr->nlmsg_flags & NLM_F_EXCL) @@ -956,6 +963,11 @@ static int ipv4_pdp_add(struct gtp_dev * if (info->nlhdr->nlmsg_flags & NLM_F_REPLACE) return -EOPNOTSUPP; + if (pctx && pctx_tid) + return -EEXIST; + if (!pctx) + pctx = pctx_tid; + ipv4_pdp_fill(pctx, info); if (pctx->gtp_version == GTP_V0) @@ -1079,7 +1091,7 @@ static int gtp_genl_new_pdp(struct sk_bu goto out_unlock; } - err = ipv4_pdp_add(gtp, sk, info); + err = gtp_pdp_add(gtp, sk, info); out_unlock: rcu_read_unlock(); From patchwork Thu Jan 2 22:07:59 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234550 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.0 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, UNWANTED_LANGUAGE_BODY, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4CCD5C3276E for ; Thu, 2 Jan 2020 22:52:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 186FF20848 for ; Thu, 2 Jan 2020 22:52:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578005528; bh=bqipibzjaq0CljlGHL7yez1s/gv8I8qGTYK/OH5zKYc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=dXpK7OBnJJSE08lwtQl+g0nJYDV4F5+J3p9FhQBXasJantkGDogkDDFL4rkbh9Gmx ukzGAdCA+Dtb43MunHz1iad43oGdIZV32LXznJ2zcKo1Y8lFvCHzPCIzwwTKuC5AsQ Sr5OxhgQVX8mVK9LtfCsRMWTEDU3r8IGsU6APIL0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728718AbgABWwH (ORCPT ); Thu, 2 Jan 2020 17:52:07 -0500 Received: from mail.kernel.org ([198.145.29.99]:45168 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728982AbgABWXT (ORCPT ); Thu, 2 Jan 2020 17:23:19 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 5E95920866; Thu, 2 Jan 2020 22:23:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003797; bh=bqipibzjaq0CljlGHL7yez1s/gv8I8qGTYK/OH5zKYc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=k9YpDj/IYc6nBdbhShv7xwzBH+JSt0Lt0pi/JjMKqLhB3MsBXY5oK0XL4Bep17aMd K2wJob6TiYSPXAI84vpURQS0wkzGWfWgSJvnHqiS4tmhgD4P1mJuTrVHPLXgJbIYWC uWYnnf2onhurU/ZJSbl+6ajcv/yKbVVBg1Q2cOrg= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Eric Dumazet , Michal Kubecek , Firo Yang , Jakub Kicinski Subject: [PATCH 4.19 107/114] tcp/dccp: fix possible race __inet_lookup_established() Date: Thu, 2 Jan 2020 23:07:59 +0100 Message-Id: <20200102220039.942733151@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Eric Dumazet commit 8dbd76e79a16b45b2ccb01d2f2e08dbf64e71e40 upstream. Michal Kubecek and Firo Yang did a very nice analysis of crashes happening in __inet_lookup_established(). Since a TCP socket can go from TCP_ESTABLISH to TCP_LISTEN (via a close()/socket()/listen() cycle) without a RCU grace period, I should not have changed listeners linkage in their hash table. They must use the nulls protocol (Documentation/RCU/rculist_nulls.txt), so that a lookup can detect a socket in a hash list was moved in another one. Since we added code in commit d296ba60d8e2 ("soreuseport: Resolve merge conflict for v4/v6 ordering fix"), we have to add hlist_nulls_add_tail_rcu() helper. Fixes: 3b24d854cb35 ("tcp/dccp: do not touch listener sk_refcnt under synflood") Signed-off-by: Eric Dumazet Reported-by: Michal Kubecek Reported-by: Firo Yang Reviewed-by: Michal Kubecek Link: https://lore.kernel.org/netdev/20191120083919.GH27852@unicorn.suse.cz/ Signed-off-by: Jakub Kicinski [stable-4.19: we also need to update code in __inet_lookup_listener() and inet6_lookup_listener() which has been removed in 5.0-rc1.] Signed-off-by: Michal Kubecek Signed-off-by: Greg Kroah-Hartman --- include/linux/rculist_nulls.h | 37 +++++++++++++++++++++++++++++++++++++ include/net/inet_hashtables.h | 12 +++++++++--- include/net/sock.h | 5 +++++ net/ipv4/inet_diag.c | 3 ++- net/ipv4/inet_hashtables.c | 19 ++++++++++--------- net/ipv4/tcp_ipv4.c | 7 ++++--- net/ipv6/inet6_hashtables.c | 3 ++- 7 files changed, 69 insertions(+), 17 deletions(-) --- a/include/linux/rculist_nulls.h +++ b/include/linux/rculist_nulls.h @@ -101,6 +101,43 @@ static inline void hlist_nulls_add_head_ } /** + * hlist_nulls_add_tail_rcu + * @n: the element to add to the hash list. + * @h: the list to add to. + * + * Description: + * Adds the specified element to the specified hlist_nulls, + * while permitting racing traversals. + * + * The caller must take whatever precautions are necessary + * (such as holding appropriate locks) to avoid racing + * with another list-mutation primitive, such as hlist_nulls_add_head_rcu() + * or hlist_nulls_del_rcu(), running on this same list. + * However, it is perfectly legal to run concurrently with + * the _rcu list-traversal primitives, such as + * hlist_nulls_for_each_entry_rcu(), used to prevent memory-consistency + * problems on Alpha CPUs. Regardless of the type of CPU, the + * list-traversal primitive must be guarded by rcu_read_lock(). + */ +static inline void hlist_nulls_add_tail_rcu(struct hlist_nulls_node *n, + struct hlist_nulls_head *h) +{ + struct hlist_nulls_node *i, *last = NULL; + + /* Note: write side code, so rcu accessors are not needed. */ + for (i = h->first; !is_a_nulls(i); i = i->next) + last = i; + + if (last) { + n->next = last->next; + n->pprev = &last->next; + rcu_assign_pointer(hlist_next_rcu(last), n); + } else { + hlist_nulls_add_head_rcu(n, h); + } +} + +/** * hlist_nulls_for_each_entry_rcu - iterate over rcu list of given type * @tpos: the type * to use as a loop cursor. * @pos: the &struct hlist_nulls_node to use as a loop cursor. --- a/include/net/inet_hashtables.h +++ b/include/net/inet_hashtables.h @@ -106,13 +106,19 @@ struct inet_bind_hashbucket { struct hlist_head chain; }; -/* - * Sockets can be hashed in established or listening table +/* Sockets can be hashed in established or listening table. + * We must use different 'nulls' end-of-chain value for all hash buckets : + * A socket might transition from ESTABLISH to LISTEN state without + * RCU grace period. A lookup in ehash table needs to handle this case. */ +#define LISTENING_NULLS_BASE (1U << 29) struct inet_listen_hashbucket { spinlock_t lock; unsigned int count; - struct hlist_head head; + union { + struct hlist_head head; + struct hlist_nulls_head nulls_head; + }; }; /* This is for listening sockets, thus all sockets which possess wildcards. */ --- a/include/net/sock.h +++ b/include/net/sock.h @@ -721,6 +721,11 @@ static inline void __sk_nulls_add_node_r hlist_nulls_add_head_rcu(&sk->sk_nulls_node, list); } +static inline void __sk_nulls_add_node_tail_rcu(struct sock *sk, struct hlist_nulls_head *list) +{ + hlist_nulls_add_tail_rcu(&sk->sk_nulls_node, list); +} + static inline void sk_nulls_add_node_rcu(struct sock *sk, struct hlist_nulls_head *list) { sock_hold(sk); --- a/net/ipv4/inet_diag.c +++ b/net/ipv4/inet_diag.c @@ -918,11 +918,12 @@ void inet_diag_dump_icsk(struct inet_has for (i = s_i; i < INET_LHTABLE_SIZE; i++) { struct inet_listen_hashbucket *ilb; + struct hlist_nulls_node *node; num = 0; ilb = &hashinfo->listening_hash[i]; spin_lock(&ilb->lock); - sk_for_each(sk, &ilb->head) { + sk_nulls_for_each(sk, node, &ilb->nulls_head) { struct inet_sock *inet = inet_sk(sk); if (!net_eq(sock_net(sk), net)) --- a/net/ipv4/inet_hashtables.c +++ b/net/ipv4/inet_hashtables.c @@ -308,6 +308,7 @@ struct sock *__inet_lookup_listener(stru bool exact_dif = inet_exact_dif_match(net, skb); struct inet_listen_hashbucket *ilb2; struct sock *sk, *result = NULL; + struct hlist_nulls_node *node; int score, hiscore = 0; unsigned int hash2; u32 phash = 0; @@ -343,7 +344,7 @@ struct sock *__inet_lookup_listener(stru goto done; port_lookup: - sk_for_each_rcu(sk, &ilb->head) { + sk_nulls_for_each_rcu(sk, node, &ilb->nulls_head) { score = compute_score(sk, net, hnum, daddr, dif, sdif, exact_dif); if (score > hiscore) { @@ -560,10 +561,11 @@ static int inet_reuseport_add_sock(struc struct inet_listen_hashbucket *ilb) { struct inet_bind_bucket *tb = inet_csk(sk)->icsk_bind_hash; + const struct hlist_nulls_node *node; struct sock *sk2; kuid_t uid = sock_i_uid(sk); - sk_for_each_rcu(sk2, &ilb->head) { + sk_nulls_for_each_rcu(sk2, node, &ilb->nulls_head) { if (sk2 != sk && sk2->sk_family == sk->sk_family && ipv6_only_sock(sk2) == ipv6_only_sock(sk) && @@ -599,9 +601,9 @@ int __inet_hash(struct sock *sk, struct } if (IS_ENABLED(CONFIG_IPV6) && sk->sk_reuseport && sk->sk_family == AF_INET6) - hlist_add_tail_rcu(&sk->sk_node, &ilb->head); + __sk_nulls_add_node_tail_rcu(sk, &ilb->nulls_head); else - hlist_add_head_rcu(&sk->sk_node, &ilb->head); + __sk_nulls_add_node_rcu(sk, &ilb->nulls_head); inet_hash2(hashinfo, sk); ilb->count++; sock_set_flag(sk, SOCK_RCU_FREE); @@ -650,11 +652,9 @@ void inet_unhash(struct sock *sk) reuseport_detach_sock(sk); if (ilb) { inet_unhash2(hashinfo, sk); - __sk_del_node_init(sk); - ilb->count--; - } else { - __sk_nulls_del_node_init_rcu(sk); + ilb->count--; } + __sk_nulls_del_node_init_rcu(sk); sock_prot_inuse_add(sock_net(sk), sk->sk_prot, -1); unlock: spin_unlock_bh(lock); @@ -790,7 +790,8 @@ void inet_hashinfo_init(struct inet_hash for (i = 0; i < INET_LHTABLE_SIZE; i++) { spin_lock_init(&h->listening_hash[i].lock); - INIT_HLIST_HEAD(&h->listening_hash[i].head); + INIT_HLIST_NULLS_HEAD(&h->listening_hash[i].nulls_head, + i + LISTENING_NULLS_BASE); h->listening_hash[i].count = 0; } --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -2020,13 +2020,14 @@ static void *listening_get_next(struct s struct tcp_iter_state *st = seq->private; struct net *net = seq_file_net(seq); struct inet_listen_hashbucket *ilb; + struct hlist_nulls_node *node; struct sock *sk = cur; if (!sk) { get_head: ilb = &tcp_hashinfo.listening_hash[st->bucket]; spin_lock(&ilb->lock); - sk = sk_head(&ilb->head); + sk = sk_nulls_head(&ilb->nulls_head); st->offset = 0; goto get_sk; } @@ -2034,9 +2035,9 @@ get_head: ++st->num; ++st->offset; - sk = sk_next(sk); + sk = sk_nulls_next(sk); get_sk: - sk_for_each_from(sk) { + sk_nulls_for_each_from(sk, node) { if (!net_eq(sock_net(sk), net)) continue; if (sk->sk_family == afinfo->family) --- a/net/ipv6/inet6_hashtables.c +++ b/net/ipv6/inet6_hashtables.c @@ -171,6 +171,7 @@ struct sock *inet6_lookup_listener(struc bool exact_dif = inet6_exact_dif_match(net, skb); struct inet_listen_hashbucket *ilb2; struct sock *sk, *result = NULL; + struct hlist_nulls_node *node; int score, hiscore = 0; unsigned int hash2; u32 phash = 0; @@ -206,7 +207,7 @@ struct sock *inet6_lookup_listener(struc goto done; port_lookup: - sk_for_each(sk, &ilb->head) { + sk_nulls_for_each(sk, node, &ilb->nulls_head) { score = compute_score(sk, net, hnum, daddr, dif, sdif, exact_dif); if (score > hiscore) { if (sk->sk_reuseport) { From patchwork Thu Jan 2 22:08:01 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234750 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C5AF0C3276C for ; Thu, 2 Jan 2020 22:23:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9614020863 for ; Thu, 2 Jan 2020 22:23:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003806; bh=TCNtj8JLZts8V49Z1W+5EOba1+rRErBBd94PFw8z4Rs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=EnrirA6T7IOX50wXQtfb8GSWjocbjeoi41n8jmXwq6eV0phFxHFk+S9eaVkhjVOhs Ky1CfStzDGupQHL3vvfC+QA4rBP6lHwu4DfhjbgC5WXmdRwDPiNZp/r4eB5uVzDYAi RC+JXSyFcpJcJ5Dp3jgQXfFSs7LzbGIL/5quuAXM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728431AbgABWXZ (ORCPT ); Thu, 2 Jan 2020 17:23:25 -0500 Received: from mail.kernel.org ([198.145.29.99]:45414 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729239AbgABWXY (ORCPT ); Thu, 2 Jan 2020 17:23:24 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 331B921835; Thu, 2 Jan 2020 22:23:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003802; bh=TCNtj8JLZts8V49Z1W+5EOba1+rRErBBd94PFw8z4Rs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tKyIIeMBH9v8A6K83Fp6kRc+4EpNeW/Lv1Xtd3HBTvC5rrGXVpXQmbgNrY4/GuQNq 1ZeRqZpLeXvDMzwVpHIdUxkcac6Mnk/ymcBxnApSPsRjPWTSfJzE3pRAP6REcFUjo5 MJBpznBVlvcLoveZpzED7eVP4C5vopQNNWfuec94= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Taehee Yoo , Jakub Kicinski Subject: [PATCH 4.19 109/114] gtp: fix wrong condition in gtp_genl_dump_pdp() Date: Thu, 2 Jan 2020 23:08:01 +0100 Message-Id: <20200102220040.127179483@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Taehee Yoo [ Upstream commit 94a6d9fb88df43f92d943c32b84ce398d50bf49f ] gtp_genl_dump_pdp() is ->dumpit() callback of GTP module and it is used to dump pdp contexts. it would be re-executed because of dump packet size. If dump packet size is too big, it saves current dump pointer (gtp interface pointer, bucket, TID value) then it restarts dump from last pointer. Current GTP code allows adding zero TID pdp context but dump code ignores zero TID value. So, last dump pointer will not be found. In addition, this patch adds missing rcu_read_lock() in gtp_genl_dump_pdp(). Fixes: 459aa660eb1d ("gtp: add initial driver for datapath of GPRS Tunneling Protocol (GTP-U)") Signed-off-by: Taehee Yoo Signed-off-by: Jakub Kicinski Signed-off-by: Greg Kroah-Hartman --- drivers/net/gtp.c | 36 +++++++++++++++++++----------------- 1 file changed, 19 insertions(+), 17 deletions(-) --- a/drivers/net/gtp.c +++ b/drivers/net/gtp.c @@ -42,7 +42,6 @@ struct pdp_ctx { struct hlist_node hlist_addr; union { - u64 tid; struct { u64 tid; u16 flow; @@ -1249,43 +1248,46 @@ static int gtp_genl_dump_pdp(struct sk_b struct netlink_callback *cb) { struct gtp_dev *last_gtp = (struct gtp_dev *)cb->args[2], *gtp; + int i, j, bucket = cb->args[0], skip = cb->args[1]; struct net *net = sock_net(skb->sk); - struct gtp_net *gn = net_generic(net, gtp_net_id); - unsigned long tid = cb->args[1]; - int i, k = cb->args[0], ret; struct pdp_ctx *pctx; + struct gtp_net *gn; + + gn = net_generic(net, gtp_net_id); if (cb->args[4]) return 0; + rcu_read_lock(); list_for_each_entry_rcu(gtp, &gn->gtp_dev_list, list) { if (last_gtp && last_gtp != gtp) continue; else last_gtp = NULL; - for (i = k; i < gtp->hash_size; i++) { - hlist_for_each_entry_rcu(pctx, >p->tid_hash[i], hlist_tid) { - if (tid && tid != pctx->u.tid) - continue; - else - tid = 0; - - ret = gtp_genl_fill_info(skb, - NETLINK_CB(cb->skb).portid, - cb->nlh->nlmsg_seq, - cb->nlh->nlmsg_type, pctx); - if (ret < 0) { + for (i = bucket; i < gtp->hash_size; i++) { + j = 0; + hlist_for_each_entry_rcu(pctx, >p->tid_hash[i], + hlist_tid) { + if (j >= skip && + gtp_genl_fill_info(skb, + NETLINK_CB(cb->skb).portid, + cb->nlh->nlmsg_seq, + cb->nlh->nlmsg_type, pctx)) { cb->args[0] = i; - cb->args[1] = pctx->u.tid; + cb->args[1] = j; cb->args[2] = (unsigned long)gtp; goto out; } + j++; } + skip = 0; } + bucket = 0; } cb->args[4] = 1; out: + rcu_read_unlock(); return skb->len; } From patchwork Thu Jan 2 22:08:03 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234752 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B833BC3276C for ; Thu, 2 Jan 2020 22:23:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8407020863 for ; Thu, 2 Jan 2020 22:23:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003784; bh=VSbxciRBW1NU4N+Z4pzUXw6YKwRStrA6h3PqUi1d9kg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=V7rPaycaHl70wWSUlGetZdsv1T5HQrkI8JMO1tn3CM/Hzonks4KLCkCp9JBf7f5yw yVaysqQI/gNNAiyl0C5t/Dkcu7OszGSawadRwY9gg9tvRouKMmrqYWmwYxJkSeuLd9 AtyEsSiCtColjJU503fGppW5O1YfmGzHXPipt8xE= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729189AbgABWXD (ORCPT ); Thu, 2 Jan 2020 17:23:03 -0500 Received: from mail.kernel.org ([198.145.29.99]:44200 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728893AbgABWW7 (ORCPT ); Thu, 2 Jan 2020 17:22:59 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 20623227BF; Thu, 2 Jan 2020 22:22:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003778; bh=VSbxciRBW1NU4N+Z4pzUXw6YKwRStrA6h3PqUi1d9kg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mFNS6H7isdL8UTfoirzHhLI/BwfZeT5J5STEnGBJ+tIoU1gAOGl65sYGMb3OednRM QKaKQpP2uyRUbADPhbRHjX/Goe/P29m/LQUunakkS93YPhMXlSAsyyM6ouMk3M07Cs oM3jFnsp0MTd7FMC0nJ/FBV7mqkN5V7hlUTFNANY= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Taehee Yoo , Jakub Kicinski Subject: [PATCH 4.19 111/114] gtp: avoid zero size hashtable Date: Thu, 2 Jan 2020 23:08:03 +0100 Message-Id: <20200102220040.300302593@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Taehee Yoo [ Upstream commit 6a902c0f31993ab02e1b6ea7085002b9c9083b6a ] GTP default hashtable size is 1024 and userspace could set specific hashtable size with IFLA_GTP_PDP_HASHSIZE. If hashtable size is set to 0 from userspace, hashtable will not work and panic will occur. Fixes: 459aa660eb1d ("gtp: add initial driver for datapath of GPRS Tunneling Protocol (GTP-U)") Signed-off-by: Taehee Yoo Signed-off-by: Jakub Kicinski Signed-off-by: Greg Kroah-Hartman --- drivers/net/gtp.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) --- a/drivers/net/gtp.c +++ b/drivers/net/gtp.c @@ -671,10 +671,13 @@ static int gtp_newlink(struct net *src_n if (err < 0) return err; - if (!data[IFLA_GTP_PDP_HASHSIZE]) + if (!data[IFLA_GTP_PDP_HASHSIZE]) { hashsize = 1024; - else + } else { hashsize = nla_get_u32(data[IFLA_GTP_PDP_HASHSIZE]); + if (!hashsize) + hashsize = 1024; + } err = gtp_hashtable_new(gtp, hashsize); if (err < 0) From patchwork Thu Jan 2 22:08:05 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 234549 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BAF0EC3276C for ; Thu, 2 Jan 2020 22:52:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 90C6120848 for ; Thu, 2 Jan 2020 22:52:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578005543; bh=0BoAm34Asy31l41x/NqZ75+i5jcgeDXKfVAPQYuGWjg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=A1+K8lc0tO6OqP3p67t1hBDxKBzq3U2n63qhPcYfU4xlTYnGcJiRpLg7amJrgnZ/Q voJgkZO1MJVHGQCFb3UUQmOq9+zt+XeEmlL6TVOMxuCBLCnlXgAtO1m+Wl4RszuRW1 vwN1SFfBP91wxyD4yEJxqNFhlo6zcFe3Cz/cTyuY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729206AbgABWXE (ORCPT ); Thu, 2 Jan 2020 17:23:04 -0500 Received: from mail.kernel.org ([198.145.29.99]:44416 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729203AbgABWXE (ORCPT ); Thu, 2 Jan 2020 17:23:04 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E6FDE21D7D; Thu, 2 Jan 2020 22:23:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578003783; bh=0BoAm34Asy31l41x/NqZ75+i5jcgeDXKfVAPQYuGWjg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=lpbJH/C982QSXAMiMM2a67SgCcLWp9Sq3Laf2feMNHK+Dno6e38My/Urgkl8M7U3N rAugu00wShMs32T6To9OgnC+h/JZfqE3y8cgSB0EdbI4W+ncS1/os8OhMV30bp7iP0 JXf05H+OVyGu8S+tFnTDNcX7GS+nHLz1SFDkIiIQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, David Engraf , Ludovic Desroches , Richard Genoud , Sasha Levin Subject: [PATCH 4.19 113/114] tty/serial: atmel: fix out of range clock divider handling Date: Thu, 2 Jan 2020 23:08:05 +0100 Message-Id: <20200102220040.512118203@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200102220029.183913184@linuxfoundation.org> References: <20200102220029.183913184@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: David Engraf [ Upstream commit cb47b9f8630ae3fa3f5fbd0c7003faba7abdf711 ] Use MCK_DIV8 when the clock divider is > 65535. Unfortunately the mode register was already written thus the clock selection is ignored. Fix by doing the baud rate calulation before setting the mode. Fixes: 5bf5635ac170 ("tty/serial: atmel: add fractional baud rate support") Signed-off-by: David Engraf Acked-by: Ludovic Desroches Acked-by: Richard Genoud Cc: stable Link: https://lore.kernel.org/r/20191216085403.17050-1-david.engraf@sysgo.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/tty/serial/atmel_serial.c | 43 ++++++++++++++++--------------- 1 file changed, 22 insertions(+), 21 deletions(-) diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c index dd8949e8fcd7..f34520e9ad6e 100644 --- a/drivers/tty/serial/atmel_serial.c +++ b/drivers/tty/serial/atmel_serial.c @@ -2154,27 +2154,6 @@ static void atmel_set_termios(struct uart_port *port, struct ktermios *termios, mode |= ATMEL_US_USMODE_NORMAL; } - /* set the mode, clock divisor, parity, stop bits and data size */ - atmel_uart_writel(port, ATMEL_US_MR, mode); - - /* - * when switching the mode, set the RTS line state according to the - * new mode, otherwise keep the former state - */ - if ((old_mode & ATMEL_US_USMODE) != (mode & ATMEL_US_USMODE)) { - unsigned int rts_state; - - if ((mode & ATMEL_US_USMODE) == ATMEL_US_USMODE_HWHS) { - /* let the hardware control the RTS line */ - rts_state = ATMEL_US_RTSDIS; - } else { - /* force RTS line to low level */ - rts_state = ATMEL_US_RTSEN; - } - - atmel_uart_writel(port, ATMEL_US_CR, rts_state); - } - /* * Set the baud rate: * Fractional baudrate allows to setup output frequency more @@ -2200,6 +2179,28 @@ static void atmel_set_termios(struct uart_port *port, struct ktermios *termios, quot = cd | fp << ATMEL_US_FP_OFFSET; atmel_uart_writel(port, ATMEL_US_BRGR, quot); + + /* set the mode, clock divisor, parity, stop bits and data size */ + atmel_uart_writel(port, ATMEL_US_MR, mode); + + /* + * when switching the mode, set the RTS line state according to the + * new mode, otherwise keep the former state + */ + if ((old_mode & ATMEL_US_USMODE) != (mode & ATMEL_US_USMODE)) { + unsigned int rts_state; + + if ((mode & ATMEL_US_USMODE) == ATMEL_US_USMODE_HWHS) { + /* let the hardware control the RTS line */ + rts_state = ATMEL_US_RTSDIS; + } else { + /* force RTS line to low level */ + rts_state = ATMEL_US_RTSEN; + } + + atmel_uart_writel(port, ATMEL_US_CR, rts_state); + } + atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_RSTSTA | ATMEL_US_RSTRX); atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_TXEN | ATMEL_US_RXEN); atmel_port->tx_stopped = false;