diff -r 7ca7be5a6a0b -r a8a126788ea0 src/share/vm/services/g1MemoryPool.hpp
--- a/src/share/vm/services/g1MemoryPool.hpp	Tue Jan 17 10:21:43 2012 -0800
+++ b/src/share/vm/services/g1MemoryPool.hpp	Thu Jan 19 09:13:58 2012 -0500
@@ -101,7 +101,7 @@
     return _g1mm->old_space_used();
   }
   size_t max_size() const {
-    return _undefined_max;
+    return _g1mm->old_gen_max();
   }
   MemoryUsage get_memory_usage();
 };