This is a note to let you know that I've just added the patch titled
drm/panthor: avoid garbage value in panthor_ioctl_dev_query()
to the 6.13-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-panthor-avoid-garbage-value-in-panthor_ioctl_dev.patch
and it can be found in the queue-6.13 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit a6b07e47c7f312781eab7878fa380d7e6ea5e50f
Author: Su Hui <suhui@xxxxxxxxxxxx>
Date: Sun Jan 19 10:58:29 2025 +0800
drm/panthor: avoid garbage value in panthor_ioctl_dev_query()
[ Upstream commit 3b32b7f638fe61e9d29290960172f4e360e38233 ]
'priorities_info' is uninitialized, and the uninitialized value is copied
to user object when calling PANTHOR_UOBJ_SET(). Using memset to initialize
'priorities_info' to avoid this garbage value problem.
Fixes: f70000ef2352 ("drm/panthor: Add DEV_QUERY_GROUP_PRIORITIES_INFO dev query")
Signed-off-by: Su Hui <suhui@xxxxxxxxxxxx>
Reviewed-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Reviewed-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxx>
Reviewed-by: Steven Price <steven.price@xxxxxxx>
Signed-off-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20250119025828.1168419-1-suhui@xxxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/panthor/panthor_drv.c b/drivers/gpu/drm/panthor/panthor_drv.c
index 0b3fbee3d37a8..44f5c72d46c3f 100644
--- a/drivers/gpu/drm/panthor/panthor_drv.c
+++ b/drivers/gpu/drm/panthor/panthor_drv.c
@@ -802,6 +802,7 @@ static void panthor_query_group_priorities_info(struct drm_file *file,
{
int prio;
+ memset(arg, 0, sizeof(*arg));
for (prio = PANTHOR_GROUP_PRIORITY_REALTIME; prio >= 0; prio--) {
if (!group_priority_permit(file, prio))
arg->allowed_mask |= BIT(prio);
