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| author | Roel Kluin <roel.kluin@gmail.com> | 2009-08-03 14:20:32 +0200 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2009-08-04 13:41:05 +1000 |
| commit | fa99239cb73dbf419bea9f334b85ba94ac88a532 (patch) | |
| tree | ea955f6d162a45ba098d9cc247f92e9a7ddada10 /drivers/gpu/drm/radeon/r100.c | |
| parent | fee280d3fd9bc5247bef9f4ab35a4693bfffdcfd (diff) | |
drm/radeon: Read buffer overflow
Check whether index is within bounds before grabbing the element.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/r100.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/r100.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c index 05a44896dffb..f1ba8ff41130 100644 --- a/drivers/gpu/drm/radeon/r100.c +++ b/drivers/gpu/drm/radeon/r100.c @@ -722,13 +722,14 @@ int r100_cs_packet_parse(struct radeon_cs_parser *p, unsigned idx) { struct radeon_cs_chunk *ib_chunk = &p->chunks[p->chunk_ib_idx]; - uint32_t header = ib_chunk->kdata[idx]; + uint32_t header; if (idx >= ib_chunk->length_dw) { DRM_ERROR("Can not parse packet at %d after CS end %d !\n", idx, ib_chunk->length_dw); return -EINVAL; } + header = ib_chunk->kdata[idx]; pkt->idx = idx; pkt->type = CP_PACKET_GET_TYPE(header); pkt->count = CP_PACKET_GET_COUNT(header); |