--- old/src/share/vm/services/threadService.hpp	2015-12-19 00:22:06.728968286 +0900
+++ new/src/share/vm/services/threadService.hpp	2015-12-19 00:22:06.584968987 +0900
@@ -495,6 +495,7 @@
       }
     } else {
       _active = false;
+      _stat = NULL;
     }
   }
 
@@ -579,6 +580,7 @@
       }
     } else {
       _active = false;
+      _stat = NULL;
     }
   }