drm/qxl: use kmalloc_array to alloc reloc_info in qxl_process_single_command
commit 34855706 upstream. This avoids integer overflows on 32bit machines when calculating reloc_info size, as reported by Alan Cox. Cc: gnomes@lxorguk.ukuu.org.uk Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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