8327105: compiler.compilercontrol.share.scenario.Executor should listen on loopback address only

Reviewed-by: chagedorn, kvn

Author: jaikiran

test/hotspot/jtreg/compiler/compilercontrol/share/actions/BaseAction.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2015, 2024, 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
@@ -87,7 +87,7 @@ protected void communicate(String[] args) {
         System.out.println("INFO: Client connection port = " + port);
         List<String> lines;
         try (
-                Socket socket = new Socket(InetAddress.getLocalHost(), port);
+                Socket socket = new Socket(InetAddress.getLoopbackAddress(), port);
                 BufferedReader in = new BufferedReader(
                         new InputStreamReader(socket.getInputStream()));
                 PrintWriter out = new PrintWriter(

test/hotspot/jtreg/compiler/compilercontrol/share/scenario/Executor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, 2023, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2015, 2024, 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
@@ -36,6 +36,8 @@
 import java.io.InputStreamReader;
 import java.io.PrintWriter;
 import java.lang.reflect.Executable;
+import java.net.InetAddress;
+import java.net.InetSocketAddress;
 import java.net.ServerSocket;
 import java.net.Socket;
 import java.util.ArrayList;
@@ -80,8 +82,9 @@ public List<OutputAnalyzer> execute() {
         // Add class name that would be executed in a separate VM
         vmOptions.add(execClass);
         OutputAnalyzer output;
-        try (ServerSocket serverSocket = new ServerSocket(0)) {
+        try (ServerSocket serverSocket = new ServerSocket()) {
             {
+                serverSocket.bind(new InetSocketAddress(InetAddress.getLoopbackAddress(), 0));
                 // Get port test VM will connect to
                 int port = serverSocket.getLocalPort();
                 if (port == -1) {