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.

test/hotspot/jtreg/runtime/Thread/SetNameAtExit.java

@@ -0,0 +1,120 @@
+/*
+ * Copyright (c) 2017, 2021, 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
+ * @bug 8167108 8266130
+ * @summary Stress test java.lang.Thread.setName() at thread exit.
+ * @run main/othervm SetNameAtExit
+ */
+
+import java.util.concurrent.CountDownLatch;
+
+public class SetNameAtExit extends Thread {
+    private final static int DEF_TIME_MAX = 30;  // default max # secs to test
+    private final static String PROG_NAME = "SetNameAtExit";
+
+    public CountDownLatch exitSyncObj = new CountDownLatch(1);
+    public CountDownLatch startSyncObj = new CountDownLatch(1);
+
+    @Override
+    public void run() {
+        // Tell main thread we have started.
+        startSyncObj.countDown();
+        try {
+            // Wait for main thread to tell us to race to the exit.
+            exitSyncObj.await();
+        } catch (InterruptedException e) {
+            throw new RuntimeException("Unexpected: " + e);
+        }
+    }
+
+    public static void main(String[] args) {
+        int timeMax = 0;
+        if (args.length == 0) {
+            timeMax = DEF_TIME_MAX;
+        } else {
+            try {
+                timeMax = Integer.parseUnsignedInt(args[0]);
+            } catch (NumberFormatException nfe) {
+                System.err.println("'" + args[0] + "': invalid timeMax value.");
+                usage();
+            }
+        }
+
+        System.out.println("About to execute for " + timeMax + " seconds.");
+
+        long count = 0;
+        long start_time = System.currentTimeMillis();
+        while (System.currentTimeMillis() < start_time + (timeMax * 1000)) {
+            count++;
+
+            SetNameAtExit thread = new SetNameAtExit();
+            thread.start();
+            try {
+                // Wait for the worker thread to get going.
+                thread.startSyncObj.await();
+                // Tell the worker thread to race to the exit and the
+                // Thread.setName() calls will come in during thread exit.
+                thread.exitSyncObj.countDown();
+                long late_count = 0;
+                while (true) {
+                    thread.setName("T" + count + "-" + late_count++);
+
+                    if (!thread.isAlive()) {
+                        // Done with Thread.setName() calls since
+                        // thread is not alive.
+                        break;
+                    }
+                }
+            } catch (InterruptedException e) {
+                throw new Error("Unexpected: " + e);
+            }
+
+            try {
+                thread.join();
+            } catch (InterruptedException e) {
+                throw new Error("Unexpected: " + e);
+            }
+            thread.setName("T" + count + "-done");
+        }
+
+        System.out.println("Executed " + count + " loops in " + timeMax +
+                           " seconds.");
+
+        String cmd = System.getProperty("sun.java.command");
+        if (cmd != null && !cmd.startsWith("com.sun.javatest.regtest.agent.MainWrapper")) {
+            // Exit with success in a non-JavaTest environment:
+            System.exit(0);
+        }
+    }
+
+    public static void usage() {
+        System.err.println("Usage: " + PROG_NAME + " [time_max]");
+        System.err.println("where:");
+        System.err.println("    time_max  max looping time in seconds");
+        System.err.println("              (default is " + DEF_TIME_MAX +
+                           " seconds)");
+        System.exit(1);
+    }
+}