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

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.
2026-03-26 17:11:57 -04:00 · 2026-03-26 17:11:57 -04:00 · 0a580b313d
commit 0a580b313d
70422 changed files with 17213626 additions and 0 deletions
--- a/test/jdk/sun/tools/jstack/DeadlockDetectionTest.java
+++ b/test/jdk/sun/tools/jstack/DeadlockDetectionTest.java
@ -0,0 +1,94 @@
+/*
+ * Copyright (c) 2015, 2026, 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.ArrayList;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import jdk.test.lib.apps.LingeredApp;
+import jdk.test.lib.apps.LingeredAppWithDeadlock;
+import jdk.test.lib.JDKToolLauncher;
+import jdk.test.lib.process.OutputAnalyzer;
+import jdk.test.lib.process.ProcessTools;
+import jdk.test.lib.Utils;
+
+import jtreg.SkippedException;
+
+/**
+ * @test
+ * @summary Test deadlock detection
+ * @requires vm.hasSA
+ * @library /test/lib
+ * @build jdk.test.lib.apps.*
+ * @build DeadlockDetectionTest
+ * @run main DeadlockDetectionTest
+ */
+public class DeadlockDetectionTest {
+
+    private static LingeredAppWithDeadlock theApp = null;
+    private static ProcessBuilder processBuilder = new ProcessBuilder();
+
+    private static OutputAnalyzer jstack(String... toolArgs) throws Exception {
+        JDKToolLauncher launcher = JDKToolLauncher.createUsingTestJDK("jstack");
+        launcher.addVMArgs(Utils.getFilteredTestJavaOpts("-XX:+UsePerfData"));
+        launcher.addVMArg("-XX:+UsePerfData");
+        if (toolArgs != null) {
+            for (String toolArg : toolArgs) {
+                launcher.addToolArg(toolArg);
+            }
+        }
+
+        processBuilder.command(launcher.getCommand());
+        System.out.println(processBuilder.command().stream().collect(Collectors.joining(" ")));
+        OutputAnalyzer output = ProcessTools.executeProcess(processBuilder);
+        System.out.println(output.getOutput());
+
+        return output;
+    }
+
+    public static void main(String[] args) throws Exception {
+        System.out.println("Starting DeadlockDetectionTest");
+
+        if (!LingeredApp.isLastModifiedWorking()) {
+            // Exact behaviour of the test depends on operating system and the test nature,
+            // so just print the warning and continue
+            System.err.println("Warning! Last modified time doesn't work.");
+        }
+
+        try {
+            theApp = new LingeredAppWithDeadlock();
+            LingeredApp.startApp(theApp, "-XX:+UsePerfData");
+            OutputAnalyzer output = jstack(Long.toString(theApp.getPid()));
+            System.out.println(output.getOutput());
+
+            if (output.getExitValue() == 3) {
+                throw new SkippedException("Test can't run for some reason");
+            } else {
+                output.shouldHaveExitValue(0);
+                output.shouldContain("Found 1 deadlock.");
+            }
+        } finally {
+            LingeredApp.stopApp(theApp);
+        }
+    }
+}