From patchwork Wed Feb 15 23:50:48 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rob Clark X-Patchwork-Id: 653755 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 76C5AC636CC for ; Wed, 15 Feb 2023 23:50:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229551AbjBOXud (ORCPT ); Wed, 15 Feb 2023 18:50:33 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46858 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229614AbjBOXud (ORCPT ); Wed, 15 Feb 2023 18:50:33 -0500 Received: from mail-pf1-x432.google.com (mail-pf1-x432.google.com [IPv6:2607:f8b0:4864:20::432]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3E6A92ED45; Wed, 15 Feb 2023 15:50:32 -0800 (PST) Received: by mail-pf1-x432.google.com with SMTP id r3so363428pfh.4; Wed, 15 Feb 2023 15:50:32 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=zeIoX4RDWl3f+nhG+Pkar8Woaq/FoxjOB1t6jgPazJQ=; b=l5qD+x9Nq6Q8eFXBnLD2JP5DpZJ5D0HO0afceUtRjxa8Z+s7yb/ay9AlicklsmlEEw 3e4Rj36HY8jLFGQGubTa5jW8tNGAI0hR46V9Chl+bP0tALpancQEy8IHLrrcSKDtjIg2 kd6Llo+VeClFPVTTcEKTtD2bMvCfInlONN/36JtjfpQbZ7BwFlCJCIR4rPy2hYbwUsZK zHBOTJlZm2GcXslUCSf4XusKH4awMsXWYun5YQ8smTpEXzovscwAWdc6PYw8DLjWoLIs aezpJuj+RbLreYYAy63wF/LsmoxdyWkKskghzUhBMuKDs2ueRq7s1huiAayMldfdHjZw N9ng== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=zeIoX4RDWl3f+nhG+Pkar8Woaq/FoxjOB1t6jgPazJQ=; b=MLiU+8cjJoGqN7b7gBfX33RrBVYQQyQdXBy/5aL0k/i+eeg/8nJ2mWBdNJVlePEAyO m7gLQPYTmoDOrxAHdBleubqcsRA30GnaEEYmcWIZbEHOFKvnkbnnKL5o+LDIlhkwlXQy I+2/GNAtsW2MO2wxrYegJUiFAPaSIopFKhurNNASEzONhmcCKML2RGzTBxui6mIJ6jyS jUeTDyVv1fky9T0DWRlOui61OfRvF8RwLM+a0zOQDAJINRHl7Nydbq2h3B6gAnlmNDn3 lCPo9jOQlREpU3Eiq0zkd0E0ZzSAKazukp9Zvm5UrWcJNKcRVE8jSn4yQoGvmAf2bdSh /XjQ== X-Gm-Message-State: AO0yUKUaF3fp7PwrsOU3YVBOSd9WrU6a/ibiC9iuQcWlkOGHIYCgQ9X0 YXcHaMiuLvr2ceCbevqN98Ve26p93S4= X-Google-Smtp-Source: AK7set+S1yWm3qNcB1PUzuuK7xDX0SA6y0sMOop00NqJPMGuJW2NkOnni+n/RHRe/RWoADbNnOcE1A== X-Received: by 2002:aa7:973d:0:b0:5a8:be36:65a8 with SMTP id k29-20020aa7973d000000b005a8be3665a8mr3307802pfg.27.1676505031706; Wed, 15 Feb 2023 15:50:31 -0800 (PST) Received: from localhost ([2a00:79e1:abd:4a00:2703:3c72:eb1a:cffd]) by smtp.gmail.com with ESMTPSA id j14-20020aa7928e000000b0058d8db0e4adsm12628278pfa.171.2023.02.15.15.50.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 15 Feb 2023 15:50:31 -0800 (PST) From: Rob Clark To: dri-devel@lists.freedesktop.org Cc: freedreno@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, Rob Clark , Rob Clark , Abhinav Kumar , Dmitry Baryshkov , Sean Paul , David Airlie , Daniel Vetter , Bas Nieuwenhuizen , Jordan Crouse , linux-kernel@vger.kernel.org (open list) Subject: [PATCH] drm/msm: Fix potential invalid ptr free Date: Wed, 15 Feb 2023 15:50:48 -0800 Message-Id: <20230215235048.1166484-1-robdclark@gmail.com> X-Mailer: git-send-email 2.39.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org From: Rob Clark The error path cleanup expects that chain and syncobj are either NULL or valid pointers. But post_deps was not allocated with __GFP_ZERO. Fixes: ab723b7a992a ("drm/msm: Add syncobj support.") Signed-off-by: Rob Clark Reviewed-by: Dmitry Osipenko --- drivers/gpu/drm/msm/msm_gem_submit.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/msm/msm_gem_submit.c b/drivers/gpu/drm/msm/msm_gem_submit.c index 6503220e5a4b..e4d13540300e 100644 --- a/drivers/gpu/drm/msm/msm_gem_submit.c +++ b/drivers/gpu/drm/msm/msm_gem_submit.c @@ -640,8 +640,8 @@ static struct msm_submit_post_dep *msm_parse_post_deps(struct drm_device *dev, int ret = 0; uint32_t i, j; - post_deps = kmalloc_array(nr_syncobjs, sizeof(*post_deps), - GFP_KERNEL | __GFP_NOWARN | __GFP_NORETRY); + post_deps = kcalloc(nr_syncobjs, sizeof(*post_deps), + GFP_KERNEL | __GFP_NOWARN | __GFP_NORETRY); if (!post_deps) return ERR_PTR(-ENOMEM); @@ -656,7 +656,6 @@ static struct msm_submit_post_dep *msm_parse_post_deps(struct drm_device *dev, } post_deps[i].point = syncobj_desc.point; - post_deps[i].chain = NULL; if (syncobj_desc.flags) { ret = -EINVAL;