--- old/src/hotspot/share/gc/shared/c2/cardTableBarrierSetC2.cpp	2019-08-07 09:42:27.277610051 +0200
+++ new/src/hotspot/share/gc/shared/c2/cardTableBarrierSetC2.cpp	2019-08-07 09:42:27.161609195 +0200
@@ -105,7 +105,7 @@
 
   if (UseCondCardMark) {
     if (ct->scanned_concurrently()) {
-      kit->insert_store_load_for_barrier();
+      kit->insert_mem_bar(Op_MemBarVolatile, oop_store);
       __ sync_kit(kit);
     }
     // The classic GC reference write barrier is typically implemented