--- old/src/hotspot/share/prims/jvmtiRedefineClasses.cpp	2018-08-06 14:14:01.382702014 -0400
+++ new/src/hotspot/share/prims/jvmtiRedefineClasses.cpp	2018-08-06 14:14:01.146702022 -0400
@@ -237,6 +237,9 @@
 #ifdef PRODUCT
   }
 #endif
+
+  // Clean up any metadata now unreferenced while MetadataOnStackMark is set.
+  ClassLoaderDataGraph::clean_deallocate_lists(false);
 }
 
 void VM_RedefineClasses::doit_epilogue() {