--- old/src/hotspot/share/runtime/handles.cpp	2019-03-11 14:27:13.938354218 +0100
+++ new/src/hotspot/share/runtime/handles.cpp	2019-03-11 14:27:13.694354221 +0100
@@ -26,6 +26,8 @@
 #include "memory/allocation.inline.hpp"
 #include "oops/constantPool.hpp"
 #include "oops/oop.inline.hpp"
+#include "oops/valueKlass.hpp"
+#include "runtime/atomic.hpp"
 #include "runtime/handles.inline.hpp"
 #include "runtime/thread.inline.hpp"
 
@@ -96,7 +98,10 @@
   // during GC phase 3, a handle may be a forward pointer that
   // is not yet valid, so loosen the assertion
   while (bottom < top) {
-    f->do_oop(bottom++);
+    if (Universe::heap()->is_in_reserved_or_null(*bottom)) {
+      f->do_oop(bottom);
+    }
+    bottom++;
   }
   return handles_visited;
 }