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/hotspot/jtreg/runtime/stack/Stack002.java
+++ b/test/hotspot/jtreg/runtime/stack/Stack002.java
@ -0,0 +1,125 @@
+/*
+ * Copyright (c) 2000, 2024, 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
+ * @key stress
+ *
+ * @summary converted from VM testbase nsk/stress/stack/stack002.
+ * VM testbase keywords: [stress, quick, stack, nonconcurrent]
+ * VM testbase readme:
+ * DESCRIPTION
+ *     Provoke StackOverflowError by infinite recursion in Java method,
+ *     intercept the exception and continue to invoke that method until
+ *     the test exceeds timeout, or until Java VM crashes.
+ * COMMENTS
+ *     I believe that the test causes HS crashes due to the following bug:
+ *     4330318 (P2/S2) NSK test fails as An irrecoverable stack overflow
+ *     See also bugs (lots of bugs!):
+ *     Evaluated:
+ *     4217960 [native stack overflow bug] reflection test causes crash
+ *     Accepted:
+ *     4285716 native stack overflow causes crash on Solaris
+ *     4281578 Second stack overflow crashes HotSpot VM
+ *     Closed (duplicate):
+ *     4027933     Native stack overflows not detected or handled correctly
+ *     4134353     (hpi) sysThreadCheckStack is a no-op on win32
+ *     4185411     Various crashes when using recursive reflection.
+ *     4167055     infinite recursion in FindClass
+ *     4222359     Infinite recursion crashes jvm
+ *     Closed (will not fix):
+ *     4231968 StackOverflowError in a native method causes Segmentation Fault
+ *     4254634     println() while catching StackOverflowError causes hotspot VM crash
+ *     4302288 the second stack overflow causes Classic VM to exit on win32
+ *
+ * @requires vm.opt.DeoptimizeALot != true
+ * @run main/othervm/timeout=900 Stack002
+ */
+
+public class Stack002 {
+    static final long timeout = 10000; // 10 seconds
+
+    public static void main(String[] args) {
+        Tester tester = new Tester();
+        Timer timer = new Timer(tester);
+        timer.start();
+        tester.start();
+        while (timer.isAlive()) {
+            try {
+                timer.join();
+            } catch (InterruptedException e) {
+                e.printStackTrace();
+                throw new RuntimeException(e);
+            }
+        }
+        System.out.println("Maximal depth: " + tester.maxdepth);
+    }
+
+    private static class Tester extends Thread {
+        int maxdepth;
+        public volatile boolean stop;
+
+        public Tester() {
+            maxdepth = 0;
+            stop = false;
+        }
+
+        public void run() {
+            recurse(0);
+        }
+
+        void recurse(int depth) {
+            maxdepth = depth;
+            try {
+                if (stop) {
+                    return;
+                }
+                recurse(depth + 1);
+            } catch (StackOverflowError | OutOfMemoryError e) {
+                recurse(depth + 1);
+            }
+        }
+    }
+
+    private static class Timer extends Thread {
+        private Tester tester;
+
+        public Timer(Tester tester) {
+            this.tester = tester;
+        }
+
+        public void run() {
+            long started;
+            started = System.currentTimeMillis();
+            while (System.currentTimeMillis() - started < timeout) {
+                try {
+                    Thread.sleep(1000);
+                } catch (InterruptedException e) {
+                    e.printStackTrace();
+                    return;
+                };
+            }
+            tester.stop = true;
+        }
+    }
+}