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authorDan Carpenter <dan.carpenter@oracle.com>2018-07-03 15:30:16 +0300
committerDaniel Vetter <daniel.vetter@ffwll.ch>2018-07-03 16:00:42 +0300
commita1de8d0a7e2cc79dad6d469901b3b5d4c94c4554 (patch)
treea43f73f9deb527ea99b3a799fb268a6ecee28685 /drivers/gpu/drm/i810
parent64e625cf53539fea4fcc5410d64c619fdbf3d225 (diff)
downloadlinux-a1de8d0a7e2cc79dad6d469901b3b5d4c94c4554.tar.xz
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
Diffstat (limited to 'drivers/gpu/drm/i810')
-rw-r--r--drivers/gpu/drm/i810/i810_dma.c2
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,