[1/2] drm/i915/execlists: Add a couple more validity checks to assert_pending()
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Message ID 20191203152631.3107653-1-chris@chris-wilson.co.uk
State New
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Series
  • [1/2] drm/i915/execlists: Add a couple more validity checks to assert_pending()
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Commit Message

Chris Wilson Dec. 3, 2019, 3:26 p.m. UTC
Check the pending request submission is valid: that it at least has a
reference for the submission and that the request is on the active list.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/gt/intel_lrc.c | 3 +++
 1 file changed, 3 insertions(+)

Comments

Chris Wilson Dec. 3, 2019, 3:41 p.m. UTC | #1
Quoting Chris Wilson (2019-12-03 15:26:30)
> Check the pending request submission is valid: that it at least has a
> reference for the submission and that the request is on the active list.
> 
> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
-Chris

Patch
diff mbox series

diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c
index fef4b7e823f5..37ab9742abe7 100644
--- a/drivers/gpu/drm/i915/gt/intel_lrc.c
+++ b/drivers/gpu/drm/i915/gt/intel_lrc.c
@@ -1303,6 +1303,9 @@  assert_pending_valid(const struct intel_engine_execlists *execlists,
 		unsigned long flags;
 		bool ok = true;
 
+		GEM_BUG_ON(!kref_read(&rq->fence.refcount));
+		GEM_BUG_ON(!i915_request_is_active(rq));
+
 		if (ce == rq->hw_context) {
 			GEM_TRACE_ERR("Dup context:%llx in pending[%zd]\n",
 				      ce->timeline->fence_context,