6.13-stable review patch. If anyone has any objections, please let me know.
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From: Su Hui suhui@nfschina.com
[ 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@nfschina.com Reviewed-by: Dan Carpenter dan.carpenter@linaro.org Reviewed-by: Boris Brezillon boris.brezillon@collabora.com Reviewed-by: Steven Price steven.price@arm.com Signed-off-by: Boris Brezillon boris.brezillon@collabora.com Link: https://patchwork.freedesktop.org/patch/msgid/20250119025828.1168419-1-suhui... Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/panthor/panthor_drv.c | 1 + 1 file changed, 1 insertion(+)
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);