1 /* 2 * Copyright (c) 2013, 2014, 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 * @summary Test that touching noaccess area in class ReservedHeapSpace results in SIGSEGV/ACCESS_VIOLATION 27 * @library /testlibrary /../../test/lib 28 * @build ReadFromNoaccessArea 29 * @run main ClassFileInstaller jdk.testlib.WhiteBox 30 * jdk.testlib.WhiteBox$WhiteBoxPermission 31 * @run main ReadFromNoaccessArea 32 */ 33 34 import com.oracle.java.testlibrary.*; 35 import jdk.testlib.WhiteBox; 36 37 public class ReadFromNoaccessArea { 38 39 public static void main(String args[]) throws Exception { 40 if (!Platform.is64bit()) { 41 System.out.println("ReadFromNoaccessArea tests is useful only on 64bit architecture. Passing silently."); 42 return; 43 } 44 45 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( 46 "-Xbootclasspath/a:.", 47 "-XX:+UnlockDiagnosticVMOptions", 48 "-XX:+WhiteBoxAPI", 49 "-XX:+UseCompressedOops", 50 "-XX:HeapBaseMinAddress=33G", 51 "-Xmx32m", 52 DummyClassWithMainTryingToReadFromNoaccessArea.class.getName()); 53 54 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 55 System.out.println("******* Printing stdout for analysis in case of failure *******"); 56 System.out.println(output.getStdout()); 57 System.out.println("******* Printing stderr for analysis in case of failure *******"); 58 System.out.println(output.getStderr()); 59 System.out.println("***************************************************************"); 60 if (output.getStdout() != null && output.getStdout().contains("WB_ReadFromNoaccessArea method is useless")) { 61 // Test conditions broken. There is no protected page in ReservedHeapSpace in these circumstances. Silently passing test. 62 return; 63 } 64 if (Platform.isWindows()) { 65 output.shouldContain("EXCEPTION_ACCESS_VIOLATION"); 66 } else if (Platform.isOSX()) { 67 output.shouldContain("SIGBUS"); 68 } else { 69 output.shouldContain("SIGSEGV"); 70 } 71 } 72 73 public static class DummyClassWithMainTryingToReadFromNoaccessArea { 74 75 // This method calls whitebox method reading from noaccess area 76 public static void main(String args[]) throws Exception { 77 WhiteBox.getWhiteBox().readFromNoaccessArea(); 78 throw new Exception("Call of readFromNoaccessArea succeeded! This is wrong. Crash expected. Test failed."); 79 } 80 } 81 82 }