On 16/02/2023 01:50, Rob Clark wrote:
From: Rob Clark <robdclark@xxxxxxxxxxxx>
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@xxxxxxxxxxxx>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
This makes me want to rewrite the ab723b7a992a ("drm/msm: Add syncobj
support.") in the usual explicit-error-path way. WDYT?
---
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;
--
With best wishes
Dmitry
