On Tue, Jul 03, 2018 at 03:30:16PM +0300, Dan Carpenter wrote:
> 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.carpen...@oracle.com>

This driver is a full-on root hole no matter what, but applied to appease
the checkers :-)

Thanks, Daniel

> 
> 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,
> _______________________________________________
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> dri-devel@lists.freedesktop.org
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-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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