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| author | Leo Liu <leo.liu@amd.com> | 2014-04-28 09:40:22 -0400 |
|---|---|---|
| committer | Christian König <christian.koenig@amd.com> | 2014-05-01 12:28:06 +0200 |
| commit | 695daf1a8e731a4b5b89de89a61f32a4d7ad7094 (patch) | |
| tree | 53ae27387f131279f27af15c837aa4b6896e6e1a /drivers/gpu/drm/radeon/radeon_uvd.c | |
| parent | f5d636d2a74b755879feec35e14a259de52ccc07 (diff) | |
| download | lwn-695daf1a8e731a4b5b89de89a61f32a4d7ad7094.tar.gz lwn-695daf1a8e731a4b5b89de89a61f32a4d7ad7094.zip | |
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/drm/radeon/radeon_uvd.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_uvd.c | 4 |
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 5748bdaeacce..0f96c471c6d8 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]); |