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undefect. CWE-407 — 63 sites patched across 27 ecosystems

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Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com

Patches, unit tests, benchmarks, whitepaper, and outreach briefs.
Public domain — no copyright claimed. Use freely.
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russell@unturf.com 2026-03-26 17:11:57 -04:00
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104
test/hotspot/jtreg/runtime/ClassFile/JsrRewriting.java Normal file
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/*
* Copyright (c) 2011, 2025, 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 JsrRewriting
* @summary JSR (jump local subroutine)
* rewriting can overflow memory address size variables
* @bug 7020373
* @bug 7055247
* @bug 7053586
* @bug 7185550
* @bug 7149464
* @requires vm.flagless
* @library /test/lib
* @library /testlibrary/asm
* @modules java.base/jdk.internal.misc
* java.desktop
* java.management
* @run driver JsrRewriting
*/
import java.io.File;
import java.nio.file.Files;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.process.ProcessTools;
public class JsrRewriting {
public static void main(String[] args) throws Exception {
// create a file in the scratch dir
String className = "OOMCrashClass4000_1";
File classFile = new File(className + ".class");
classFile.createNewFile();
// fill it with the binary data of the class file
byte[] bytes = OOMCrashClass4000_1.dump();
Files.write(classFile.toPath(), bytes);
// ======= execute the test
// We run the test with MallocLimit set to 768m in oom mode,
// in order to trigger and observe a fake os::malloc oom. This needs NMT.
ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder(
"-cp", ".",
"-XX:+UnlockDiagnosticVMOptions",
"-XX:NativeMemoryTracking=summary",
"-XX:MallocLimit=768m:oom",
className);
OutputAnalyzer output = new OutputAnalyzer(pb.start());
output.shouldNotHaveExitValue(0);
String[] expectedMsgs = {
"java.lang.LinkageError",
"java.lang.NoSuchMethodError",
"Main method not found in class " + className,
"insufficient memory"
};
MultipleOrMatch(output, expectedMsgs);
}
private static void
MultipleOrMatch(OutputAnalyzer analyzer, String[] whatToMatch) {
String output = analyzer.getOutput();
for (String expected : whatToMatch)
if (output.contains(expected))
return;
String err =
" stdout: [" + analyzer.getOutput() + "];\n" +
" exitValue = " + analyzer.getExitValue() + "\n";
System.err.println(err);
StringBuilder msg = new StringBuilder("Output did not contain " +
"any of the following expected messages: \n");
for (String expected : whatToMatch)
msg.append(expected).append(System.lineSeparator());
throw new RuntimeException(msg.toString());
}
}