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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
commit 0a580b313d
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test/hotspot/jtreg/serviceability/tmtools/jstack/JstackThreadTest.java Normal file
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/*
* Copyright (c) 2016, 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.
*/
import java.util.Arrays;
import jdk.test.lib.JDKToolLauncher;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.process.ProcessTools;
import utils.Utils;
import java.util.concurrent.CountDownLatch;
/*
* @test JstackThreadTest
* @bug 8151442
* @summary jstack doesn't close quotation marks properly with threads' name greater than 1996 characters
* @modules java.base/jdk.internal.misc
* @library /test/lib
* @run main JstackThreadTest
*/
public class JstackThreadTest {
static class NamedThread extends Thread {
CountDownLatch latch;
NamedThread(String name, CountDownLatch latch) {
this.latch = latch;
setName(name);
}
@Override
public void run() {
latch.countDown();
Utils.sleep();
}
}
public static void main(String[] args) throws Exception {
StringBuilder sb = new StringBuilder();
/*create a string more than 1996 character */
for(int i = 0; i < 1998; i++){
sb.append("a");
}
testWithName(sb.toString());
}
private static void testWithName(String name) throws Exception {
//parent thread countDown latch
CountDownLatch latch = new CountDownLatch(1);
// Start a thread with a long thread name
NamedThread thread = new NamedThread(name, latch);
thread.setDaemon(true);
thread.start();
ProcessBuilder processBuilder = new ProcessBuilder();
JDKToolLauncher launcher = JDKToolLauncher.createUsingTestJDK("jstack");
launcher.addVMArgs(jdk.test.lib.Utils.getTestJavaOpts());
// jstack output may be lengthy, disable streaming output to avoid deadlocks
launcher.addVMArg("-Djdk.attach.allowStreamingOutput=false");
launcher.addToolArg("-l");
launcher.addToolArg(Long.toString(ProcessTools.getProcessId()));
processBuilder.command(launcher.getCommand());
System.out.println(Arrays.toString(processBuilder.command().toArray()).replace(",", ""));
// Ensuring that Jstack will always run after NamedThread
latch.await();
OutputAnalyzer output = ProcessTools.executeProcess(processBuilder);
System.out.println(output.getOutput());
output.shouldContain("\""+ name + "\"");
}
}