--- old/src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/debugger/linux/LinuxDebuggerLocal.java	2020-02-27 14:04:45.762149000 +0900
+++ new/src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/debugger/linux/LinuxDebuggerLocal.java	2020-02-27 14:04:45.457746000 +0900
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2002, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2002, 2020, 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
@@ -121,6 +121,15 @@
     @Override
     public native String demangle(String sym);
 
+    public native long findLibPtrByAddress0(long pc);
+
+    @Override
+    public Address findLibPtrByAddress(Address pc) {
+      long ptr = findLibPtrByAddress0(pc.asLongValue());
+      return (ptr == 0L) ? null
+                         : new LinuxAddress(this, ptr);
+    }
+
     // Note on Linux threads are really processes. When target process is
     // attached by a serviceability agent thread, only that thread can do
     // ptrace operations on the target. This is because from kernel's point