--- a/src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/memory/FileMapInfo.java	Thu Nov 14 10:02:52 2019 +0800
+++ b/src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/memory/FileMapInfo.java	Wed Nov 13 16:36:54 2019 -0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2018, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -70,7 +70,7 @@
 
     // SpaceInfo
     type = db.lookupType("CDSFileMapRegion");
-    long mdRegionBaseAddressOffset = type.getField("_addr._base").getOffset();
+    long mdRegionBaseAddressOffset = type.getField("_mapped_base").getOffset();
     mdRegionBaseAddress = (mdSpaceValue.addOffsetTo(mdRegionBaseAddressOffset)).getAddressAt(0);
     long mdRegionSizeOffset = type.getField("_used").getOffset();
     long mdRegionSize = (mdSpaceValue.addOffsetTo(mdRegionSizeOffset)).getAddressAt(0).asLongValue();