diff options
| author | Su Hui <suhui@nfschina.com> | 2025-01-19 05:58:29 +0300 |
|---|---|---|
| committer | Boris Brezillon <boris.brezillon@collabora.com> | 2025-02-07 19:31:59 +0300 |
| commit | 3b32b7f638fe61e9d29290960172f4e360e38233 (patch) | |
| tree | 0b291fefcf2fbefae200efcd77c14a86a840e400 | |
| parent | 02458fbfaa0170aabf8506f7d4ed054f02414251 (diff) | |
| download | linux-3b32b7f638fe61e9d29290960172f4e360e38233.tar.xz | |
drm/panthor: avoid garbage value in panthor_ioctl_dev_query()
'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@nfschina.com
| -rw-r--r-- | drivers/gpu/drm/panthor/panthor_drv.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/panthor/panthor_drv.c b/drivers/gpu/drm/panthor/panthor_drv.c index d5dcd3d1b33a..08136e790ca0 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); |