This is a note to let you know that I've just added the patch titled
drm/msm: fix potential NULL dereference in cleanup
to the 5.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-msm-fix-potential-null-dereference-in-cleanup.patch
and it can be found in the queue-5.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 75fbd9c7151b1c8b74185a33b05f73797f6f8bd9
Author: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Date: Wed Oct 13 11:11:33 2021 +0300
drm/msm: fix potential NULL dereference in cleanup
[ Upstream commit 027d052a36e56789a2134772bacb4fd0860f03a3 ]
The "msm_obj->node" list needs to be initialized earlier so that the
list_del() in msm_gem_free_object() doesn't experience a NULL pointer
dereference.
Fixes: 6ed0897cd800 ("drm/msm: Fix debugfs deadlock")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20211013081133.GF6010@kili
Signed-off-by: Rob Clark <robdclark@xxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c
index 1e8a971a86f29..1ba18f53dbda1 100644
--- a/drivers/gpu/drm/msm/msm_gem.c
+++ b/drivers/gpu/drm/msm/msm_gem.c
@@ -1184,6 +1184,7 @@ static int msm_gem_new_impl(struct drm_device *dev,
msm_obj->madv = MSM_MADV_WILLNEED;
INIT_LIST_HEAD(&msm_obj->submit_entry);
+ INIT_LIST_HEAD(&msm_obj->node);
INIT_LIST_HEAD(&msm_obj->vmas);
*obj = &msm_obj->base;
