--- a/src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/runtime/CompiledVFrame.java	Mon Dec 04 23:55:52 2017 +0100
+++ b/src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/runtime/CompiledVFrame.java	Mon Dec 04 10:23:08 2017 +0900
@@ -128,6 +128,9 @@
 
   /** Returns List<MonitorInfo> */
   public List<MonitorInfo> getMonitors() {
+    if (getScope() == null) {
+      return new ArrayList<>();
+    }
     List monitors = getScope().getMonitors();
     if (monitors == null) {
       return new ArrayList<>();