The following test failed in the JDK18 CI:

runtime/cds/appcds/loaderConstraints/DynamicLoaderConstraintsTest.java#custom-cl-zgc

Here's a snippet from the log file:

[0.205s][info][class,load ] java.lang.invoke.LambdaForm$Holder
[0.209s][info][class,load ] java.lang.Shutdown source: shared objects file
[0.209s][info][class,load ] java.lang.Shutdown$Lock source: shared objects file
# To suppress the following error report, specify this argument
# after -XX: or in .hotspotrc: SuppressErrorAt=/zBarrier.cpp:41
#
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (/System/Volumes/Data/mesos/work_dir/slaves/a2dc162d-743b-4800-9e92-31f85abb45b1-S137615/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/83568f57-04bd-460f-88fd-51627cffb523/runs/fe04011a-4797-4735-bb60-897ff406a555/workspace/open/src/hotspot/share/gc/z/zBarrier.cpp:41), pid=16076, tid=43011
# assert(ZAddress::is_marked(addr)) failed: Should be marked
#
# JRE version: Java(TM) SE Runtime Environment (18.0+26) (fastdebug build 18-ea+26-1760)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (fastdebug 18-ea+26-1760, mixed mode, sharing, tiered, compressed class ptrs, z gc, bsd-aarch64)
# Core dump will be written. Default location: core.16076
#
# An error report file with more information is saved as:
# /System/Volumes/Data/mesos/work_dir/slaves/a2dc162d-743b-4800-9e92-31f85abb45b1-S147880/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/a38438c2-b97e-46f3-83d1-5e9ba0649a3e/runs/f7a128b3-9614-4f19-8479-6244d160faf4/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_tier2_runtime/scratch/2/hs_err_pid16076.log
#
# If you would like to submit a bug report, please visit:
# https://bugreport.java.com/bugreport/crash.jsp
#
];
 stderr: []
 exitValue = 134

java.lang.RuntimeException: Expected to get exit value of [0]

at jdk.test.lib.process.OutputAnalyzer.shouldHaveExitValue(OutputAnalyzer.java:489)
at jdk.test.lib.cds.CDSTestUtils$Result.assertNormalExit(CDSTestUtils.java:195)
at DynamicLoaderConstraintsTest.doTest(DynamicLoaderConstraintsTest.java:166)
at DynamicLoaderConstraintsTest.doTest(DynamicLoaderConstraintsTest.java:117)
at DynamicArchiveTestBase.runTest(DynamicArchiveTestBase.java:74)
at DynamicLoaderConstraintsTest.main(DynamicLoaderConstraintsTest.java:108)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
at java.base/java.lang.reflect.Method.invoke(Method.java:577)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
at java.base/java.lang.Thread.run(Thread.java:833)

JavaTest Message: Test threw exception: java.lang.RuntimeException: Expected to get exit value of [0]


Here's the crashing thread's stack:

--------------- T H R E A D ---------------

Current thread (0x000000011f00d980): VMThread "VM Thread" [stack: 0x000000016ee6c000,0x000000016f06f000] [id=43011]

Stack: [0x000000016ee6c000,0x000000016f06f000], sp=0x000000016f06e520, free space=2057k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.dylib+0x106b3ac] VMError::report_and_die(int, char const*, char const*, char*, Thread*, unsigned char*, void*, void*, char const*, int, unsigned long)+0x5d8
V [libjvm.dylib+0x106bae4] VMError::report_and_die(Thread*, void*, char const*, int, char const*, char const*, char*)+0x40
V [libjvm.dylib+0x59bbd8] report_vm_error(char const*, int, char const*, char const*, ...)+0x80
V [libjvm.dylib+0x10c40e8] unsigned long ZBarrier::mark<false, true, false, true>(unsigned long)+0x98
V [libjvm.dylib+0xfdb940] oop ZBarrier::barrier<&(ZBarrier::is_good_or_null_fast_path(unsigned long)), &(ZBarrier::load_barrier_on_oop_slow_path(unsigned long))>(oop volatile*, oop)+0xa0
V [libjvm.dylib+0x81832c] AccessInternal::PostRuntimeDispatch<ZBarrierSet::AccessBarrier<548932ull, ZBarrierSet>, (AccessInternal::BarrierType)2, 548932ull>::oop_access_barrier(void*)+0x94
V [libjvm.dylib+0x84aab4] InstanceKlass::signers() const+0x34
V [libjvm.dylib+0xf9340c] SystemDictionaryShared::check_for_exclusion_impl(InstanceKlass*)+0x28c
V [libjvm.dylib+0xf93134] SystemDictionaryShared::check_for_exclusion(InstanceKlass*, DumpTimeClassInfo*)+0x188
V [libjvm.dylib+0xf9543c] SystemDictionaryShared::check_excluded_classes()+0x250
V [libjvm.dylib+0x663620] DynamicArchiveBuilder::doit()+0xd8
V [libjvm.dylib+0x663418] VM_PopulateDynamicDumpSharedSpace::doit()+0xac
V [libjvm.dylib+0x1071b80] VM_Operation::evaluate()+0x104
V [libjvm.dylib+0x108d350] VMThread::evaluate_operation(VM_Operation*)+0xe0
V [libjvm.dylib+0x108de34] VMThread::inner_execute(VM_Operation*)+0x33c
V [libjvm.dylib+0x108d074] VMThread::loop()+0xb4
V [libjvm.dylib+0x108ce5c] VMThread::run()+0xc0
V [libjvm.dylib+0xfc5f28] Thread::call_run()+0x21c
V [libjvm.dylib+0xd98584] thread_native_entry(Thread*)+0x160
C [libsystem_pthread.dylib+0x74ec] _pthread_start+0x94

VM_Operation (0x000000016d5d2788): PopulateDumpSharedSpace, mode: safepoint, requested by thread 0x000000011a012420