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drm/radeon: check buffer relocation offset

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Signed-off-by: Leo Liu <[email protected]>
Signed-off-by: Christian König <[email protected]>
Cc: [email protected]
This commit is contained in:
Leo Liu 2014-04-28 09:40:22 -04:00 • committed by Christian König
commit 695daf1a8e
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/radeon/radeon_uvd.c
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@ -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]);