--- old/src/share/vm/utilities/bitMap.cpp	2014-02-04 14:53:57.296689340 +0100
+++ new/src/share/vm/utilities/bitMap.cpp	2014-02-04 14:53:57.188689342 +0100
@@ -107,7 +107,7 @@
     while (true) {
       intptr_t res = Atomic::cmpxchg_ptr(nw, pw, w);
       if (res == w) break;
-      w  = *pw;
+      w  = res;
       nw = value ? (w | ~mr) : (w & mr);
     }
   }