--- old/src/hotspot/share/gc/shared/accessBarrierSupport.cpp	2018-10-15 16:24:21.678569745 +0200
+++ new/src/hotspot/share/gc/shared/accessBarrierSupport.cpp	2018-10-15 16:24:21.361556000 +0200
@@ -29,7 +29,8 @@
 
 DecoratorSet AccessBarrierSupport::resolve_unknown_oop_ref_strength(DecoratorSet decorators, oop base, ptrdiff_t offset) {
   DecoratorSet ds = decorators & ~ON_UNKNOWN_OOP_REF;
-  if (!java_lang_ref_Reference::is_referent_field(base, offset)) {
+  if (!java_lang_ref_Reference::is_referent_field(base, offset) ||
+      java_lang_ref_Reference::is_final(base)) {
     ds |= ON_STRONG_OOP_REF;
   } else if (java_lang_ref_Reference::is_phantom(base)) {
     ds |= ON_PHANTOM_OOP_REF;