diff options
| author | Nikita Zhandarovich <n.zhandarovich@fintech.ru> | 2023-11-29 07:22:12 -0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-11-30 18:26:31 -0500 |
| commit | b5c5baa458faa5430c445acd9a17481274d77ccf (patch) | |
| tree | 33102ed467fe35f1be819119be7510c16aa4d5fd /drivers/gpu/drm/radeon | |
| parent | 39c960bbf9d9ea862398759e75736cfb68c3446f (diff) | |
drm/radeon/r100: Fix integer overflow issues in r100_cs_track_check()
It may be possible, albeit unlikely, to encounter integer overflow
during the multiplication of several unsigned int variables, the
result being assigned to a variable 'size' of wider type.
Prevent this potential behaviour by converting one of the multiples
to unsigned long.
Found by Linux Verification Center (linuxtesting.org) with static
analysis tool SVACE.
Fixes: 0242f74d29df ("drm/radeon: clean up CS functions in r100.c")
Signed-off-by: Nikita Zhandarovich <n.zhandarovich@fintech.ru>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/radeon')
| -rw-r--r-- | drivers/gpu/drm/radeon/r100.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c index affa9e0309b2..cfeca2694d5f 100644 --- a/drivers/gpu/drm/radeon/r100.c +++ b/drivers/gpu/drm/radeon/r100.c @@ -2321,7 +2321,7 @@ int r100_cs_track_check(struct radeon_device *rdev, struct r100_cs_track *track) switch (prim_walk) { case 1: for (i = 0; i < track->num_arrays; i++) { - size = track->arrays[i].esize * track->max_indx * 4; + size = track->arrays[i].esize * track->max_indx * 4UL; if (track->arrays[i].robj == NULL) { DRM_ERROR("(PW %u) Vertex array %u no buffer " "bound\n", prim_walk, i); @@ -2340,7 +2340,7 @@ int r100_cs_track_check(struct radeon_device *rdev, struct r100_cs_track *track) break; case 2: for (i = 0; i < track->num_arrays; i++) { - size = track->arrays[i].esize * (nverts - 1) * 4; + size = track->arrays[i].esize * (nverts - 1) * 4UL; if (track->arrays[i].robj == NULL) { DRM_ERROR("(PW %u) Vertex array %u no buffer " "bound\n", prim_walk, i); |