From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BF740C678D4 for ; Tue, 7 Mar 2023 17:48:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232204AbjCGRsB (ORCPT ); Tue, 7 Mar 2023 12:48:01 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37722 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232084AbjCGRre (ORCPT ); Tue, 7 Mar 2023 12:47:34 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5B5B27C3C3 for ; Tue, 7 Mar 2023 09:42:31 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id F2BB0B819BD for ; Tue, 7 Mar 2023 17:42:30 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 48F45C433EF; Tue, 7 Mar 2023 17:42:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1678210949; bh=ilvr2HTR5pcW9eWbiFHGuYhXFFpzK6TWoyrYFnE29/A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kCbuLu/LhOJ+OTIpTo06M/vTmFBlM+Q1w7gYKQg2zqFLARyjouhnt087RT0GbFFLc LZaG21pnF4G6ORybLisNSxGsEHYz8LF820ccKOqd0uw5TrksBgQoRKeWiMq1VD9s2H aqghkNsf4sRmPxY7i+Oi7FBGrE2fC60RIRMk6060= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Jiasheng Jiang , Abhinav Kumar , Dmitry Baryshkov , Sasha Levin Subject: [PATCH 6.2 0707/1001] drm/msm/dsi: Add missing check for alloc_ordered_workqueue Date: Tue, 7 Mar 2023 17:57:59 +0100 Message-Id: <20230307170052.289293121@linuxfoundation.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230307170022.094103862@linuxfoundation.org> References: <20230307170022.094103862@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Jiasheng Jiang [ Upstream commit 115906ca7b535afb1fe7b5406c566ccd3873f82b ] Add check for the return value of alloc_ordered_workqueue as it may return NULL pointer and cause NULL pointer dereference. Signed-off-by: Jiasheng Jiang Reviewed-by: Abhinav Kumar Patchwork: https://patchwork.freedesktop.org/patch/517646/ Link: https://lore.kernel.org/r/20230110021651.12770-1-jiasheng@iscas.ac.cn Signed-off-by: Dmitry Baryshkov Signed-off-by: Sasha Levin --- drivers/gpu/drm/msm/dsi/dsi_host.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c index 89aadd3b3202b..f167a45f1fbdd 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_host.c +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c @@ -1977,6 +1977,9 @@ int msm_dsi_host_init(struct msm_dsi *msm_dsi) /* setup workqueue */ msm_host->workqueue = alloc_ordered_workqueue("dsi_drm_work", 0); + if (!msm_host->workqueue) + return -ENOMEM; + INIT_WORK(&msm_host->err_work, dsi_err_worker); msm_dsi->id = msm_host->id; -- 2.39.2