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/ErrorHandling/ReattemptErrorTest.java
+++ b/test/hotspot/jtreg/runtime/ErrorHandling/ReattemptErrorTest.java
@ -0,0 +1,113 @@
+/*
+ * Copyright (c) 2023, 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
+ * @summary Check secondary error handling
+ * @library /test/lib
+ * @requires vm.flagless
+ * @requires vm.debug
+ * @requires os.family != "windows"
+ * @modules java.base/jdk.internal.misc
+ *          java.management
+ * @run driver ReattemptErrorTest
+ */
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.regex.Pattern;
+
+import jdk.test.lib.process.OutputAnalyzer;
+import jdk.test.lib.process.ProcessTools;
+
+public class ReattemptErrorTest {
+
+    // 16 seconds for hs_err generation timeout = 4 seconds per step timeout
+    public static final int ERROR_LOG_TIMEOUT = 16;
+
+    public static void main(String[] args) throws Exception {
+
+        // How this works:
+        // The test will fault with SIGFPE (ErrorHandlerTest=15) and then, during error handling,
+        // three pieces of reattempt logic are tested:
+        // * First a step will fault with SIGSEGV. And then reattempts the step twice. With the first
+        //   reattempt succeeding. And the second reattempt being skipped.
+        // * Second a step will timeout, followed by a reattempt, the reattempt will be skipped.
+        // * Third a step will use almost all stack space and then fault with SIGSEGV. After this the
+        //   proceeding reattempt steps will be skipped because of low stack headroom.
+
+        ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder(
+            "-XX:+UnlockDiagnosticVMOptions",
+            "-Xmx100M",
+            "-XX:-CreateCoredumpOnCrash",
+            "-XX:ErrorHandlerTest=15",
+            "-XX:TestCrashInErrorHandler=15",
+            "-XX:ErrorLogTimeout=" + ERROR_LOG_TIMEOUT,
+            "-version");
+
+        OutputAnalyzer output_detail = new OutputAnalyzer(pb.start());
+
+        // we should have crashed with a SIGFPE
+        output_detail.shouldMatch("# A fatal error has been detected by the Java Runtime Environment:.*");
+        output_detail.shouldMatch("#.+SIGFPE.*");
+
+        // extract hs-err file
+        File hs_err_file = HsErrFileUtils.openHsErrFileFromOutput(output_detail);
+
+        ArrayList<Pattern> positivePatternlist = new ArrayList<>();
+        ArrayList<Pattern> negativePatternlist = new ArrayList<>();
+
+        // * First case
+        //   * First step crashes
+        positivePatternlist.add(Pattern.compile("Will crash now \\(TestCrashInErrorHandler=15\\)..."));
+        positivePatternlist.add(Pattern.compile("\\[error occurred during error reporting \\(test reattempt secondary crash\\).*\\]"));
+        //   * Second attempt succeeds
+        positivePatternlist.add(Pattern.compile("test reattempt secondary crash. attempt 2"));
+        //   * Third attempt is skipped
+        negativePatternlist.add(Pattern.compile("test reattempt secondary crash. attempt 3"));
+
+        // * Second case
+        //   * First step timeouts
+        positivePatternlist.add(Pattern.compile("test reattempt timeout"));
+        positivePatternlist.add(Pattern.compile(".*timeout occurred during error reporting in step \"test reattempt timeout\".*"));
+        //   * Second attempt is skipped because of previous timeout
+        negativePatternlist.add(Pattern.compile("test reattempt secondary crash, attempt 2"));
+        positivePatternlist.add(Pattern.compile(".*stop reattempt \\(test reattempt timeout, attempt 2\\) reason: Step time limit reached.*"));
+
+        // * Third case
+        //   * First step crashes after using almost all stack space
+        positivePatternlist.add(Pattern.compile("test reattempt stack headroom"));
+        positivePatternlist.add(Pattern.compile("\\[error occurred during error reporting \\(test reattempt stack headroom\\).*\\]"));
+        //   * Second step is skip because of limited stack headroom
+        negativePatternlist.add(Pattern.compile("test reattempt stack headroom, attempt 2"));
+        positivePatternlist.add(Pattern.compile(".*stop reattempt \\(test reattempt stack headroom, attempt 2\\) reason: Stack headroom limit reached.*"));
+
+        Pattern[] positivePatterns = positivePatternlist.toArray(new Pattern[] {});
+        Pattern[] negativePatterns = negativePatternlist.toArray(new Pattern[] {});
+
+        HsErrFileUtils.checkHsErrFileContent(hs_err_file, positivePatterns, negativePatterns, true, true);
+
+        System.out.println("OK.");
+    }
+}