--- a/src/hotspot/share/gc/shared/genCollectedHeap.cpp	Tue May 08 09:57:45 2018 +0200
+++ b/src/hotspot/share/gc/shared/genCollectedHeap.cpp	Tue May 08 10:01:29 2018 +0200
@@ -517,9 +517,7 @@
     }
     gen->collect(full, clear_soft_refs, size, is_tlab);
     if (!rp->enqueuing_is_done()) {
-      ReferenceProcessorPhaseTimes pt(NULL, rp->num_queues());
-      rp->enqueue_discovered_references(NULL, &pt);
-      pt.print_enqueue_phase();
+      rp->disable_discovery();
     } else {
       rp->set_enqueuing_is_done(false);
     }