--- a/src/hotspot/share/memory/metaspaceShared.cpp	Fri Mar 09 12:38:54 2018 -0800
+++ b/src/hotspot/share/memory/metaspaceShared.cpp	Fri Mar 09 13:36:39 2018 -0800
@@ -1018,6 +1018,7 @@
   VMOp_Type type() const { return VMOp_PopulateDumpSharedSpace; }
   void doit();   // outline because gdb sucks
   static void write_region(FileMapInfo* mapinfo, int region, DumpRegion* space, bool read_only,  bool allow_exec);
+  bool allow_nested_vm_operations() const { return true; }
 }; // class VM_PopulateDumpSharedSpace
 
 class SortedSymbolClosure: public SymbolClosure {