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authorLeo Liu <leo.liu@amd.com>2014-04-28 09:40:22 -0400
committerChristian König <christian.koenig@amd.com>2014-05-01 12:28:06 +0200
commit695daf1a8e731a4b5b89de89a61f32a4d7ad7094 (patch)
tree53ae27387f131279f27af15c837aa4b6896e6e1a /drivers/gpu
parentf5d636d2a74b755879feec35e14a259de52ccc07 (diff)
downloadop-kernel-dev-695daf1a8e731a4b5b89de89a61f32a4d7ad7094.zip
op-kernel-dev-695daf1a8e731a4b5b89de89a61f32a4d7ad7094.tar.gz
drm/radeon: check buffer relocation offset
Signed-off-by: Leo Liu <leo.liu@amd.com> Signed-off-by: Christian König <christian.koenig@amd.com> Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/radeon/radeon_uvd.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_uvd.c b/drivers/gpu/drm/radeon/radeon_uvd.c
index 5748bda..0f96c47 100644
--- a/drivers/gpu/drm/radeon/radeon_uvd.c
+++ b/drivers/gpu/drm/radeon/radeon_uvd.c
@@ -465,6 +465,10 @@ static int radeon_uvd_cs_reloc(struct radeon_cs_parser *p,
cmd = radeon_get_ib_value(p, p->idx) >> 1;
if (cmd < 0x4) {
+ if (end <= start) {
+ DRM_ERROR("invalid reloc offset %X!\n", offset);
+ return -EINVAL;
+ }
if ((end - start) < buf_sizes[cmd]) {
DRM_ERROR("buffer (%d) to small (%d / %d)!\n", cmd,
(unsigned)(end - start), buf_sizes[cmd]);
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