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/*
* Copyright (c) 2013, 2023, 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
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @summary Test that touching noaccess area in class ReservedHeapSpace results in SIGSEGV/ACCESS_VIOLATION
* @library /test/lib
* @requires vm.bits == 64
* @requires vm.flagless
* @modules java.base/jdk.internal.misc
* java.management
* @build jdk.test.whitebox.WhiteBox
* @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
* @run driver ReadFromNoaccessArea
*/
import jdk.test.lib.Platform;
import jdk.test.lib.process.ProcessTools;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.whitebox.WhiteBox;
import jtreg.SkippedException;
public class ReadFromNoaccessArea {
public static void main(String args[]) throws Exception {
ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder(
"-Xbootclasspath/a:.",
"-XX:+UnlockDiagnosticVMOptions",
"-XX:+WhiteBoxAPI",
"-XX:+UseCompressedOops",
"-XX:HeapBaseMinAddress=33G",
"-XX:-CreateCoredumpOnCrash",
"-Xmx128m",
DummyClassWithMainTryingToReadFromNoaccessArea.class.getName());
OutputAnalyzer output = new OutputAnalyzer(pb.start());
System.out.println("******* Printing stdout for analysis in case of failure *******");
System.out.println(output.getStdout());
System.out.println("******* Printing stderr for analysis in case of failure *******");
System.out.println(output.getStderr());
System.out.println("***************************************************************");
if (output.getStdout() != null && output.getStdout().contains("WB_ReadFromNoaccessArea method is useless")) {
throw new SkippedException("There is no protected page in ReservedHeapSpace in these circumstance");
}
output.shouldNotHaveExitValue(0);
if (Platform.isWindows()) {
output.shouldContain("EXCEPTION_ACCESS_VIOLATION");
} else if (Platform.isOSX()) {
output.shouldContain("SIGBUS");
} else {
output.shouldContain("SIGSEGV");
}
}
public static class DummyClassWithMainTryingToReadFromNoaccessArea {
// This method calls whitebox method reading from noaccess area
public static void main(String args[]) throws Exception {
WhiteBox.getWhiteBox().readFromNoaccessArea();
}
}
}
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