From: Rob Clark <robdclark@gmail.com> To: dri-devel@lists.freedesktop.org Cc: freedreno@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, Rob Clark <robdclark@chromium.org>, Rob Clark <robdclark@gmail.com>, Abhinav Kumar <quic_abhinavk@quicinc.com>, Dmitry Baryshkov <dmitry.baryshkov@linaro.org>, Sean Paul <sean@poorly.run>, David Airlie <airlied@gmail.com>, Daniel Vetter <daniel@ffwll.ch>, Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>, Jordan Crouse <jordan@cosmicpenguin.net>, 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 [thread overview] Message-ID: <20230215235048.1166484-1-robdclark@gmail.com> (raw) From: Rob Clark <robdclark@chromium.org> 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 <robdclark@chromium.org> --- 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; -- 2.39.1
WARNING: multiple messages have this Message-ID (diff)
From: Rob Clark <robdclark@gmail.com> To: dri-devel@lists.freedesktop.org Cc: Rob Clark <robdclark@chromium.org>, linux-arm-msm@vger.kernel.org, Abhinav Kumar <quic_abhinavk@quicinc.com>, Jordan Crouse <jordan@cosmicpenguin.net>, Sean Paul <sean@poorly.run>, Dmitry Baryshkov <dmitry.baryshkov@linaro.org>, freedreno@lists.freedesktop.org, open list <linux-kernel@vger.kernel.org> Subject: [PATCH] drm/msm: Fix potential invalid ptr free Date: Wed, 15 Feb 2023 15:50:48 -0800 [thread overview] Message-ID: <20230215235048.1166484-1-robdclark@gmail.com> (raw) From: Rob Clark <robdclark@chromium.org> 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 <robdclark@chromium.org> --- 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; -- 2.39.1
next reply other threads:[~2023-02-15 23:50 UTC|newest] Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-02-15 23:50 Rob Clark [this message] 2023-02-15 23:50 ` [PATCH] drm/msm: Fix potential invalid ptr free Rob Clark 2023-02-16 16:41 ` Dmitry Baryshkov 2023-02-16 16:41 ` Dmitry Baryshkov 2023-02-16 17:16 ` Dmitry Osipenko 2023-02-16 17:16 ` Dmitry Osipenko
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