diff options
| author | Nikita Zhandarovich <n.zhandarovich@fintech.ru> | 2023-11-29 07:22:12 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-01-25 14:52:41 -0800 |
| commit | 4e57efe03a301921428131c752c85521332961e8 (patch) | |
| tree | aa04f0dd0288b863e8dc99320dec7362db5d442c /drivers/gpu | |
| parent | 1f7008dd122da4b1823c01ec3630401f8fd99c8d (diff) | |
drm/radeon/r100: Fix integer overflow issues in r100_cs_track_check()
[ Upstream commit b5c5baa458faa5430c445acd9a17481274d77ccf ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/gpu')
| -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 2dd85ba1faa2..d3ad98bd2590 100644 --- a/drivers/gpu/drm/radeon/r100.c +++ b/drivers/gpu/drm/radeon/r100.c @@ -2320,7 +2320,7 @@ 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); @@ -2339,7 +2339,7 @@ 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); |