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Commit c821ee6d authored by Dan Carpenter's avatar Dan Carpenter Committed by Zhenyu Wang
Browse files

drm/i915/gvt: fix a bounds check in ring_id_to_context_switch_event() 



There are two bugs here.  The && should be || and the > is off by one so
it should be >= ARRAY_SIZE().

Fixes: 8453d674 ("drm/i915/gvt: vGPU execlist virtualization")
Signed-off-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: default avatarZhenyu Wang <zhenyuw@linux.intel.com>
parent 5ad59bf0

drivers/gpu/drm/i915/gvt/execlist.c

+2 −2
Original line number Diff line number Diff line
@@ -56,8 +56,8 @@ static int context_switch_events[] = { 


static int ring_id_to_context_switch_event(int ring_id)

{

	if (WARN_ON(ring_id < RCS && ring_id >

				ARRAY_SIZE(context_switch_events)))

	if (WARN_ON(ring_id < RCS ||

		    ring_id >= ARRAY_SIZE(context_switch_events)))

		return -EINVAL;



	return context_switch_events[ring_id];