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/java/lang/ProcessBuilder/Zombies.java
+++ b/test/jdk/java/lang/ProcessBuilder/Zombies.java
@ -0,0 +1,89 @@
+/*
+ * Copyright (c) 2006, 2017, 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
+ * @run main/othervm Zombies
+ * @bug 6474073 6180151
+ * @summary Make sure zombies don't get created on Unix
+ * @author Martin Buchholz
+ */
+
+import java.io.*;
+
+public class Zombies {
+
+    static final String os = System.getProperty("os.name");
+
+    static final String TrueCommand = os.contains("OS X")?
+        "/usr/bin/true" : "/bin/true";
+
+    public static void main(String[] args) throws Throwable {
+        if (! new File("/usr/bin/perl").canExecute() ||
+            ! new File("/bin/ps").canExecute())
+            return;
+        System.out.println("Looks like a Unix system.");
+        long mypid = ProcessHandle.current().pid();
+        System.out.printf("mypid: %d%n", mypid);
+
+        final Runtime rt = Runtime.getRuntime();
+
+        try {
+            String[] cmd = {"no-such-file"};
+            rt.exec(cmd);
+            throw new Error("expected IOException not thrown");
+        } catch (IOException expected) {/* OK */}
+
+        try {
+            String[] cmd = {"."};
+            rt.exec(cmd);
+            throw new Error("expected IOException not thrown");
+        } catch (IOException expected) {/* OK */}
+
+        try {
+            String[] cmd = {TrueCommand};
+            rt.exec(cmd, null, new File("no-such-dir"));
+            throw new Error("expected IOException not thrown");
+        } catch (IOException expected) {/* OK */}
+
+        Process p = rt.exec(TrueCommand);
+        ProcessHandle pp = p.toHandle().parent().orElse(null);
+        System.out.printf("%s pid: %d, parent: %s%n", TrueCommand, p.pid(), pp);
+        p.waitFor();
+
+        // Count all the zombies that are children of this Java process
+        final String[] zombieCounter = {
+            "/usr/bin/perl", "-e",
+                "$a=`/bin/ps -eo ppid,pid,s,command`;" +
+                        "print @b=$a=~/^ *@{[getppid]} +[0-9]+ +Z.*$/mog;" +
+                        "exit @b"
+        };
+
+        ProcessBuilder pb = new ProcessBuilder(zombieCounter);
+        pb.inheritIO();
+        int zombies = pb.start().waitFor();
+        if (zombies != 0) {
+            throw new Error(zombies + " zombies!");
+        }
+    }
+}