--- a/src/hotspot/share/jfr/recorder/repository/jfrEmergencyDump.cpp	Wed Oct 09 23:21:07 2019 +0200
+++ b/src/hotspot/share/jfr/recorder/repository/jfrEmergencyDump.cpp	Wed Oct 09 23:22:56 2019 +0200
@@ -390,6 +390,10 @@
     Service_lock->unlock();
   }
 
+  if (UseNotificationThread && Notification_lock->owned_by_self()) {
+    Notification_lock->unlock();
+  }
+
   if (CodeCache_lock->owned_by_self()) {
     CodeCache_lock->unlock();
   }