[PATCH] drm/amdkfd: fix a resource leakage issue

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The function kfd_lookup_process_by_pasid will increase the reference
count of kfd_process object, its caller should call kfd_unref_process to
decrease the reference count. Otherwise resource leakage will happen.

Signed-off-by: Dennis Li <Dennis.Li@xxxxxxx>

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_events.c b/drivers/gpu/drm/amd/amdkfd/kfd_events.c
index 3c9fe078334a..6cc6afb96a45 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_events.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_events.c
@@ -1100,4 +1100,6 @@ void kfd_signal_poison_consumed_event(struct kfd_dev *dev, u32 pasid)
 
 	/* user application will handle SIGBUS signal */
 	send_sig(SIGBUS, p->lead_thread, 0);
+
+	kfd_unref_process(p);
 }
-- 
2.17.1

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