diff -r b788134d664a -r c2364e06aa8d hotspot/src/share/vm/runtime/thread.hpp
--- a/hotspot/src/share/vm/runtime/thread.hpp	Wed Mar 04 02:23:38 2015 +0100
+++ b/hotspot/src/share/vm/runtime/thread.hpp	Thu Mar 05 17:27:16 2015 +0100
@@ -702,7 +702,8 @@
   static WatcherThread* _watcher_thread;
 
   static bool _startable;
-  volatile static bool _should_terminate; // updated without holding lock
+  // volatile due to at least one lock-free read
+  volatile static bool _should_terminate;
 
   os::WatcherThreadCrashProtection* _crash_protection;
  public: