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

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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.
This commit is contained in:
russell@unturf.com 2026-03-26 17:11:57 -04:00
commit 0a580b313d
70422 changed files with 17213626 additions and 0 deletions
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60
test/hotspot/jtreg/runtime/locking/TestOutOfOrderUnlocking.jasm Normal file
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/*
* Copyright Amazon.com Inc. 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 id=int
* @summary Check that monitorenter A; monitorenter B; monitorexit A; monitorexit B; works
* @compile TestOutOfOrderUnlocking.jasm
* @run main/othervm -Xint TestOutOfOrderUnlocking
*/
/*
* @test id=comp
* @summary Check that monitorenter A; monitorenter B; monitorexit A; monitorexit B; works, with -Xcomp
* @compile TestOutOfOrderUnlocking.jasm
* @run main/othervm -Xcomp TestOutOfOrderUnlocking
*/
super public class TestOutOfOrderUnlocking version 64:0 {
public static Method main:"([Ljava/lang/String;)V" stack 2 locals 4 {
new class java/lang/Object;
dup;
invokespecial Method java/lang/Object."<init>":"()V";
astore_1;
new class java/lang/Object;
dup;
invokespecial Method java/lang/Object."<init>":"()V";
astore_2;
aload_1;
monitorenter;
aload_2;
monitorenter;
aload_1;
monitorexit;
aload_2;
monitorexit;
return;
}
}

87
test/hotspot/jtreg/runtime/locking/TestRecursiveMonitorChurn.java Normal file
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/*
* Copyright Amazon.com Inc. 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 Tests that recursive locking doesn't cause excessive native memory usage
* @library /test/lib
* @build jdk.test.whitebox.WhiteBox
* @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
* -Xmx100M -XX:AsyncDeflationInterval=0 -XX:GuaranteedAsyncDeflationInterval=0
* -Xlog:monitorinflation=trace
* TestRecursiveMonitorChurn
*/
import jdk.test.whitebox.WhiteBox;
import jtreg.SkippedException;
public class TestRecursiveMonitorChurn {
static class Monitor {
public static volatile int i, j;
synchronized void doSomething() {
i++;
doSomethingElse();
}
synchronized void doSomethingElse() {
j++;
}
}
static final WhiteBox WB = WhiteBox.getWhiteBox();
static final int COUNT = 100000;
public static volatile Monitor monitor;
public static void main(String[] args) {
final long pre_monitor_count = WB.getInUseMonitorCount();
System.out.println(" Precount = " + pre_monitor_count);
for (int i = 0; i < COUNT; i++) {
monitor = new Monitor();
monitor.doSomething();
}
System.out.println("i + j = " + (Monitor.i + Monitor.j));
final long post_monitor_count = WB.getInUseMonitorCount();
System.out.println("Postcount = " + post_monitor_count);
if (pre_monitor_count != post_monitor_count) {
final long monitor_count_change = post_monitor_count - pre_monitor_count;
System.out.println("Unexpected change in monitor count: " + monitor_count_change);
// Intermittent deflation and inflation may occur due to running the test
// with stress flags (like DeoptimizeALot) or with added instrumentation
// which runs in the same VM.
// An arbitrary fuzzy max difference of 10 (= 0.01% of COUNT) is chosen to
// allow for these occurrences to be skipped while still catching regressions.
final long fuzzy_max_difference = 10;
if (Math.abs(monitor_count_change) < fuzzy_max_difference) {
final String type = monitor_count_change < 0 ? "deflation" : "inflation";
throw new SkippedException("Intermittent " + type + " detected. Invalid test.");
}
if (monitor_count_change < 0) {
throw new RuntimeException("Unexpected Deflation");
}
throw new RuntimeException("Unexpected Inflation");
}
}
}