From: Matthew Brost <matthew.brost@xxxxxxxxx>
A context can get destroyed after cancelling a request, if a context or
GT reset occurs, so take a reference to context when cancelling a
request.
Fixes: 62eaf0ae217d ("drm/i915/guc: Support request cancellation")
Signed-off-by: Matthew Brost <matthew.brost@xxxxxxxxx>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@xxxxxxxxx>
---
drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
index 5970c54a2e72..e036a171ff17 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
@@ -1624,8 +1624,10 @@ static void guc_context_cancel_request(struct intel_context *ce,
struct i915_request *rq)
{
if (i915_sw_fence_signaled(&rq->submit)) {
- struct i915_sw_fence *fence = guc_context_block(ce);
+ struct i915_sw_fence *fence;
+ intel_context_get(ce);
+ fence = guc_context_block(ce);
i915_sw_fence_wait(fence);
if (!i915_request_completed(rq)) {
__i915_request_skip(rq);
@@ -1640,6 +1642,7 @@ static void guc_context_cancel_request(struct intel_context *ce,
flush_work(&ce_to_guc(ce)->ct.requests.worker);
guc_context_unblock(ce);
+ intel_context_put(ce);
}
}
--
2.25.1
