Signed-off-by: Leo Liu <leo.liu@xxxxxxx>
Cc:stable@xxxxxxxxxxxxxxx
---
drivers/gpu/drm/radeon/radeon_uvd.c | 4 ++++
1 file changed, 4 insertions(+)
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]);
--
1.9.1
_______________________________________________
dri-devel mailing list
dri-devel@xxxxxxxxxxxxxxxxxxxxx
http://lists.freedesktop.org/mailman/listinfo/dri-devel
