diff options
| author | Dan Carpenter <dan.carpenter@oracle.com> | 2018-07-03 15:30:16 +0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2018-07-03 15:00:42 +0200 |
| commit | a1de8d0a7e2cc79dad6d469901b3b5d4c94c4554 (patch) | |
| tree | a43f73f9deb527ea99b3a799fb268a6ecee28685 | |
| parent | 64e625cf53539fea4fcc5410d64c619fdbf3d225 (diff) | |
| download | linux-a1de8d0a7e2cc79dad6d469901b3b5d4c94c4554.tar.bz2 | |
drm/i810: off by one in i810_dma_vertex()
If vertex->idx == dma->buf_count then we end up reading one element
beyond the end of the dma->buflist[] array.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20180703123015.kma7v7rwtdy4urce@kili.mountain
| -rw-r--r-- | drivers/gpu/drm/i810/i810_dma.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i810/i810_dma.c b/drivers/gpu/drm/i810/i810_dma.c index 576a417690d4..3b378936f575 100644 --- a/drivers/gpu/drm/i810/i810_dma.c +++ b/drivers/gpu/drm/i810/i810_dma.c @@ -934,7 +934,7 @@ static int i810_dma_vertex(struct drm_device *dev, void *data, DRM_DEBUG("idx %d used %d discard %d\n", vertex->idx, vertex->used, vertex->discard); - if (vertex->idx < 0 || vertex->idx > dma->buf_count) + if (vertex->idx < 0 || vertex->idx >= dma->buf_count) return -EINVAL; i810_dma_dispatch_vertex(dev, |