--- old/src/share/vm/memory/sharedHeap.cpp	2014-11-06 12:39:42.452976000 -0800
+++ new/src/share/vm/memory/sharedHeap.cpp	2014-11-06 12:39:41.463693000 -0800
@@ -156,7 +156,7 @@
   }
 }
 
-Monitor* SharedHeap::StrongRootsScope::_lock = new Monitor(Mutex::leaf, "StrongRootsScope lock", false);
+Monitor* SharedHeap::StrongRootsScope::_lock = new Monitor(Mutex::leaf, "StrongRootsScope lock", false, Monitor::_safepoint_check_never);
 
 void SharedHeap::StrongRootsScope::mark_worker_done_with_threads(uint n_workers) {
   // The Thread work barrier is only needed by G1 Class Unloading.