[Intel-gfx] [PATCH] drm/i915: Don't touch NULL sg on i915_gem_object_get_pages_gtt() error

[Matthew Auld]

On 14 November 2016 at 11:29, Chris Wilson <chris at chris-wilson.co.uk> wrote:
> On the DMA mapping error path, sg may be NULL (it has already been
> marked as the last scatterlist entry), and we should avoid dereferencing
> it again.
>
> Reported-by: Dan Carpenter <dan.carpenter at oracle.com>
> Fixes: e227330223a7 ("drm/i915: avoid leaking DMA mappings")
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> Cc: Imre Deak <imre.deak at intel.com>
> Cc: stable at vger.kernel.org
Reviewed-by: Matthew Auld <matthew.auld at intel.com>