1 /* 2 * Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test 26 * @key regression 27 * @bug 8012015 28 * @summary Make sure reserved (but uncommitted) memory is not accessible 29 * @library /testlibrary /test/lib 30 * @modules java.base/sun.misc 31 * java.management 32 * @build ReserveMemory 33 * @run main ClassFileInstaller sun.hotspot.WhiteBox 34 * sun.hotspot.WhiteBox$WhiteBoxPermission 35 * @run main ReserveMemory 36 */ 37 38 import jdk.test.lib.*; 39 40 import sun.hotspot.WhiteBox; 41 42 public class ReserveMemory { 43 private static boolean isWindows() { 44 return System.getProperty("os.name").toLowerCase().startsWith("win"); 45 } 46 47 private static boolean isOsx() { 48 return System.getProperty("os.name").toLowerCase().startsWith("mac"); 49 } 50 51 public static void main(String args[]) throws Exception { 52 if (args.length > 0) { 53 WhiteBox.getWhiteBox().readReservedMemory(); 54 55 throw new Exception("Read of reserved/uncommitted memory unexpectedly succeeded, expected crash!"); 56 } 57 58 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( 59 "-Xbootclasspath/a:.", 60 "-XX:+UnlockDiagnosticVMOptions", 61 "-XX:+WhiteBoxAPI", 62 "-XX:-TransmitErrorReport", 63 "-XX:-CreateCoredumpOnCrash", 64 "-Xmx32m", 65 "ReserveMemory", 66 "test"); 67 68 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 69 if (isWindows()) { 70 output.shouldContain("EXCEPTION_ACCESS_VIOLATION"); 71 } else if (isOsx()) { 72 output.shouldContain("SIGBUS"); 73 } else { 74 output.shouldContain("SIGSEGV"); 75 } 76 } 77 }