From patchwork Tue Oct 27 13:48:32 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: 312089 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=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, 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 CA528C6369E for ; Tue, 27 Oct 2020 17:20:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7189A21D42 for ; Tue, 27 Oct 2020 17:20:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603819248; bh=R+RYBK03w0OUfe0H54+RYEYme2JX99282g9zz9D1oFE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=yY3Yjt604FzQuYVs8a9gX+aT3zjg4cRs+hK55/ljo7s+Ep62h94NhrGx/MDX9/GVG 3GSHA/oOgx4AVw5t7u+2mE6dvvfQemyWKy9kzcUSYo6rhtuTgs7RZLVeTrFkYaHEVR 9QnUAy35rMGEeUHP2s/LsvmJkcdp279mp9qz1xy4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1818029AbgJ0RQ6 (ORCPT ); Tue, 27 Oct 2020 13:16:58 -0400 Received: from mail.kernel.org ([198.145.29.99]:56084 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1771544AbgJ0Oz3 (ORCPT ); Tue, 27 Oct 2020 10:55:29 -0400 Received: from localhost (83-86-74-64.cable.dynamic.v4.ziggo.nl [83.86.74.64]) (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 90CF422283; Tue, 27 Oct 2020 14:55:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603810525; bh=R+RYBK03w0OUfe0H54+RYEYme2JX99282g9zz9D1oFE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=L4FToSO/+lp66AvZ4QxO5VqeYLtPDjFSja3bER69IDhdDNFNANVHXo+FjxIxtUPeC OJrUZyNoHtE80rw/WuDSmxh6hjW7q1c98K15h5uC3ade592Fua7Iub64B3tHoqxvIy GPy5wfFEjIoBEk+QSMdnS2RPV/yg8J0OYxvGSo+o= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Christophe JAILLET , Kalle Valo , Sasha Levin Subject: [PATCH 5.8 169/633] mwifiex: Do not use GFP_KERNEL in atomic context Date: Tue, 27 Oct 2020 14:48:32 +0100 Message-Id: <20201027135530.600539628@linuxfoundation.org> X-Mailer: git-send-email 2.29.1 In-Reply-To: <20201027135522.655719020@linuxfoundation.org> References: <20201027135522.655719020@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Christophe JAILLET [ Upstream commit d2ab7f00f4321370a8ee14e5630d4349fdacc42e ] A possible call chain is as follow: mwifiex_sdio_interrupt (sdio.c) --> mwifiex_main_process (main.c) --> mwifiex_process_cmdresp (cmdevt.c) --> mwifiex_process_sta_cmdresp (sta_cmdresp.c) --> mwifiex_ret_802_11_scan (scan.c) --> mwifiex_parse_single_response_buf (scan.c) 'mwifiex_sdio_interrupt()' is an interrupt function. Also note that 'mwifiex_ret_802_11_scan()' already uses GFP_ATOMIC. So use GFP_ATOMIC instead of GFP_KERNEL when memory is allocated in 'mwifiex_parse_single_response_buf()'. Fixes: 7c6fa2a843c5 ("mwifiex: use cfg80211 dynamic scan table and cfg80211_get_bss API") or Fixes: 601216e12c65e ("mwifiex: process RX packets in SDIO IRQ thread directly") Signed-off-by: Christophe JAILLET Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20200809092906.744621-1-christophe.jaillet@wanadoo.fr Signed-off-by: Sasha Levin --- drivers/net/wireless/marvell/mwifiex/scan.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/marvell/mwifiex/scan.c b/drivers/net/wireless/marvell/mwifiex/scan.c index ff932627a46c1..2fb69a590bd8e 100644 --- a/drivers/net/wireless/marvell/mwifiex/scan.c +++ b/drivers/net/wireless/marvell/mwifiex/scan.c @@ -1889,7 +1889,7 @@ mwifiex_parse_single_response_buf(struct mwifiex_private *priv, u8 **bss_info, chan, CFG80211_BSS_FTYPE_UNKNOWN, bssid, timestamp, cap_info_bitmap, beacon_period, - ie_buf, ie_len, rssi, GFP_KERNEL); + ie_buf, ie_len, rssi, GFP_ATOMIC); if (bss) { bss_priv = (struct mwifiex_bss_priv *)bss->priv; bss_priv->band = band;