From patchwork Mon Mar 29 07:57:21 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 411316 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=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, 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 00692C433FB for ; Mon, 29 Mar 2021 08:38:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E45B560C3D for ; Mon, 29 Mar 2021 08:38:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233969AbhC2Iie (ORCPT ); Mon, 29 Mar 2021 04:38:34 -0400 Received: from mail.kernel.org ([198.145.29.99]:56230 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234464AbhC2IgA (ORCPT ); Mon, 29 Mar 2021 04:36:00 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 0AF1061996; Mon, 29 Mar 2021 08:35:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1617006940; bh=wtSuQVK3pJ4EFbYAzASKCXRFT6BsDWsG2FeA192Pphs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=CDt9UB/msgmTowVFmQ29rnpg/oDCxk+Z6946qKkPAW3YnoknTSuI3D7E7lQErp1R8 856PjWoJTXi6d6hjw9D0UTcnBAy8v4XitUWUN6fUR7751/3A+3VnBjbE6hPrdoYelC sxfsIvDhptkH6/7QUy23N87EDxor2bCaA5H++fFA= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jakub Kicinski , Sasha Neftin , Dvora Fuxbrumer , Tony Nguyen , Sasha Levin Subject: [PATCH 5.11 125/254] igc: reinit_locked() should be called with rtnl_lock Date: Mon, 29 Mar 2021 09:57:21 +0200 Message-Id: <20210329075637.335628960@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210329075633.135869143@linuxfoundation.org> References: <20210329075633.135869143@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Sasha Neftin [ Upstream commit 6da262378c99b17b1a1ac2e42aa65acc1bd471c7 ] This commit applies to the igc_reset_task the same changes that were applied to the igb driver in commit 024a8168b749 ("igb: reinit_locked() should be called with rtnl_lock") and fix possible race in reset subtask. Fixes: 0507ef8a0372 ("igc: Add transmit and receive fastpath and interrupt handlers") Suggested-by: Jakub Kicinski Signed-off-by: Sasha Neftin Tested-by: Dvora Fuxbrumer Signed-off-by: Tony Nguyen Signed-off-by: Sasha Levin --- drivers/net/ethernet/intel/igc/igc_main.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c index afd6a62da29d..93874e930abf 100644 --- a/drivers/net/ethernet/intel/igc/igc_main.c +++ b/drivers/net/ethernet/intel/igc/igc_main.c @@ -3847,10 +3847,19 @@ static void igc_reset_task(struct work_struct *work) adapter = container_of(work, struct igc_adapter, reset_task); + rtnl_lock(); + /* If we're already down or resetting, just bail */ + if (test_bit(__IGC_DOWN, &adapter->state) || + test_bit(__IGC_RESETTING, &adapter->state)) { + rtnl_unlock(); + return; + } + igc_rings_dump(adapter); igc_regs_dump(adapter); netdev_err(adapter->netdev, "Reset adapter\n"); igc_reinit_locked(adapter); + rtnl_unlock(); } /**