The following test failed in the JDK22 CI:

runtime/handshake/MixedHandshakeWalkStackTest.java

Here's a snippet from the log file:

"MainThread" #20 [3778977] prio=5 os_prio=0 cpu=2797.22ms elapsed=25.96s tid=0x00007fc5ec32f330 nid=3778977 waiting on condition [0x00007fc5c2e9c000]
   java.lang.Thread.State: RUNNABLE
Thread: 0x00007fc5ec32f330 [0x39a9a1] State: _running _at_poll_safepoint 0
   JavaThread state: _thread_blocked
at java.lang.Thread.join(java.base@22-ea/Thread.java:2045)
#
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (/opt/mach5/mesos/work_dir/slaves/cd627e65-f015-4fb1-a1d2-b6c9b8127f98-S202952/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/7ea1439c-6a8e-4755-9db4-5138d6e04957/runs/54ab28d1-851a-402f-960a-cd3e8bcfc6aa/workspace/open/src/hotspot/share/runtime/javaThread.hpp:980), pid=3778833, tid=3778844
# assert(t->is_Java_thread()) failed: incorrect cast to JavaThread
#
# JRE version: Java(TM) SE Runtime Environment (22.0+17) (fastdebug build 22-ea+17-1331)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (fastdebug 22-ea+17-1331, compiled mode, sharing, tiered, compressed oops, compressed class ptrs, g1 gc, linux-amd64)
# Problematic frame:
# V [libjvm.so+0x1743fd5] LockStack::contains(oop) const+0x325
#
# Core dump will be written. Default location: Core dumps may be processed with "/opt/core.sh %p" (or dumping to /opt/mach5/mesos/work_dir/slaves/cd627e65-f015-4fb1-a1d2-b6c9b8127f98-S200905/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/af57202a-9f78-4b5d-a63b-ece9be24e78a/runs/93c402bc-fad1-4370-a9d0-0ac8b729f0c9/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_runtime/scratch/2/core.3778833)
#
Unsupported internal testing APIs have been used.

# An error report file with more information is saved as:
# /opt/mach5/mesos/work_dir/slaves/cd627e65-f015-4fb1-a1d2-b6c9b8127f98-S200905/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/af57202a-9f78-4b5d-a63b-ece9be24e78a/runs/93c402bc-fad1-4370-a9d0-0ac8b729f0c9/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_runtime/scratch/2/hs_err_pid3778833.log
#
# If you would like to submit a bug report, please visit:
# https://bugreport.java.com/bugreport/crash.jsp
#
----------System.err:(0/0)----------
----------rerun:(46/8741)*----------


Here's the crashing thread's stack:

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

Current thread (0x00007fc5ec2dc530): VMThread "VM Thread" [id=3778844, stack(0x00007fc5c3879000,0x00007fc5c3979000) (1024K)] _threads_hazard_ptr=0x00007fc538001630, _nested_threads_hazard_ptr_cnt=0

Stack: [0x00007fc5c3879000,0x00007fc5c3979000], sp=0x00007fc5c39761e0, free space=1012k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0x1743fd5] LockStack::contains(oop) const+0x325 (javaThread.hpp:980)
V [libjvm.so+0x185b6b5] javaVFrame::print_lock_info_on(outputStream*, int)+0x9c5 (objectMonitor.inline.hpp:39)
V [libjvm.so+0xec281e] JavaThread::print_stack_on(outputStream*)+0x1de (javaThread.cpp:1755)
V [libjvm.so+0x18bde8f] WB_HandshakeWalkStack::TraceSelfClosure::do_thread(Thread*)+0x7f (whitebox.cpp:2237)
V [libjvm.so+0xda58c6] HandshakeOperation::do_handshake(JavaThread*)+0x46 (handshake.cpp:326)
V [libjvm.so+0xda5e6a] HandshakeState::try_process(HandshakeOperation*) [clone .part.0]+0xfa (handshake.cpp:671)
V [libjvm.so+0xda8263] VM_HandshakeAllThreads::doit()+0x443 (handshake.cpp:651)
V [libjvm.so+0x1888fc9] VM_Operation::evaluate()+0x139 (vmOperations.cpp:71)
V [libjvm.so+0x18a9c5b] VMThread::evaluate_operation(VM_Operation*)+0x10b (vmThread.cpp:281)
V [libjvm.so+0x18aa61e] VMThread::inner_execute(VM_Operation*)+0x20e (vmThread.cpp:435)
V [libjvm.so+0x18aa9b4] VMThread::loop()+0x84 (vmThread.cpp:502)
V [libjvm.so+0x18aaac2] VMThread::run()+0x92 (vmThread.cpp:175)
V [libjvm.so+0x17a338a] Thread::call_run()+0xba (thread.cpp:220)
V [libjvm.so+0x14a89ca] thread_native_entry(Thread*)+0x12a (os_linux.cpp:786)


The test task's JVM args are:
-Xcomp -ea -esa -XX:CompileThreshold=100 -XX:+UnlockExperimentalVMOptions -server -XX:+TieredCompilation -XX:-DoEscapeAnalysis