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drm/i915/execlists: Add a couple more validity checks to assert_pending() 

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>
Link: https://patchwork.freedesktop.org/patch/msgid/20191203152631.3107653-1-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2019-12-03 15:26:30 +00:00
parent 42d1051130
commit 80aac91b27
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/i915/gt/intel_lrc.c
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@ -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,