--- a/hotspot/src/share/vm/runtime/perfData.cpp	Fri Oct 05 13:37:08 2012 -0700
+++ b/hotspot/src/share/vm/runtime/perfData.cpp	Wed Oct 10 14:35:58 2012 -0400
@@ -588,6 +588,10 @@
 
 PerfData* PerfDataList::find_by_name(const char* name) {
 
+  // if add_item hasn't been called the list won't be initialized
+  if (this == NULL)
+    return NULL;
+
   int i = _set->find((void*)name, PerfDataList::by_name);
 
   if (i >= 0 && i <= _set->length())