1 /* 2 * Copyright (c) 2013, 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 * @ignore 8028398 26 * @test 27 * @summary Test that touching noaccess area in class ReservedHeapSpace results in SIGSEGV/ACCESS_VIOLATION 28 * @library /testlibrary /testlibrary/whitebox 29 * @build ReadFromNoaccessArea 30 * @run main ClassFileInstaller sun.hotspot.WhiteBox 31 * @run main ReadFromNoaccessArea 32 */ 33 34 import com.oracle.java.testlibrary.*; 35 import sun.hotspot.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 DummyClassWithMainTryingToReadFromNoaccessArea.class.getName()); 52 53 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 54 System.out.println("******* Printing stdout for analysis in case of failure *******"); 55 System.out.println(output.getStdout()); 56 System.out.println("******* Printing stderr for analysis in case of failure *******"); 57 System.out.println(output.getStderr()); 58 System.out.println("***************************************************************"); 59 if (output.getStdout() != null && output.getStdout().contains("WB_ReadFromNoaccessArea method is useless")) { 60 // Test conditions broken. There is no protected page in ReservedHeapSpace in these circumstances. Silently passing test. 61 return; 62 } 63 if (Platform.isWindows()) { 64 output.shouldContain("EXCEPTION_ACCESS_VIOLATION"); 65 } else if (Platform.isOSX()) { 66 output.shouldContain("SIGBUS"); 67 } else { 68 output.shouldContain("SIGSEGV"); 69 } 70 } 71 72 public static class DummyClassWithMainTryingToReadFromNoaccessArea { 73 74 // This method calls whitebox method reading from noaccess area 75 public static void main(String args[]) throws Exception { 76 WhiteBox.getWhiteBox().readFromNoaccessArea(); 77 throw new Exception("Call of readFromNoaccessArea succeeded! This is wrong. Crash expected. Test failed."); 78 } 79 } 80 81 }