--- a/hotspot/src/share/vm/memory/space.cpp	Tue Jun 17 08:40:48 2008 -0700
+++ b/hotspot/src/share/vm/memory/space.cpp	Mon Jun 23 16:49:37 2008 -0700
@@ -276,6 +276,7 @@
   set_top(bottom());
   set_saved_mark();
   if (clear_space) clear();
+  set_concurrent_iteration_safe_limit(top());
 }
 
 void ContiguousSpace::clear() {