drm/i915: Don't touch NULL sg on i915_gem_object_get_pages_gtt() error
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@oracle.com> Fixes: e2273302 ("drm/i915: avoid leaking DMA mappings") Signed-off-by:
Chris Wilson <chris@chris-wilson.co.uk> Cc: Imre Deak <imre.deak@intel.com> Cc: stable@vger.kernel.org Link: http://patchwork.freedesktop.org/patch/msgid/20161114112930.2033-1-chris@chris-wilson.co.uk Reviewed-by:
Matthew Auld <matthew.auld@intel.com>
parent
786d290c
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