--- old/src/hotspot/share/jfr/recorder/repository/jfrEmergencyDump.cpp	2019-07-08 11:17:29.000000000 -0700
+++ new/src/hotspot/share/jfr/recorder/repository/jfrEmergencyDump.cpp	2019-07-08 11:17:28.000000000 -0700
@@ -393,6 +393,10 @@
     Service_lock->unlock();
   }
 
+  if (Notification_lock->owned_by_self()) {
+    Notification_lock->unlock();
+  }
+
   if (CodeCache_lock->owned_by_self()) {
     CodeCache_lock->unlock();
   }