Check #1: verifying a contended monitor of current thread "MainThread" ...
Check #1 done
check #2: verifying a contended monitor of current auxiliary thread ...
check #2 done
notifying main thread

Waiting for auxiliary thread ...
Auxiliary thread is ready

Check #3: verifying a contended monitor of auxiliary thread ...
(IsSameObject#3) unexpected monitor object: 0xffff24000e00
FATAL ERROR in native method: Unexpected monitor object.
at contmon01.checkMonitor(Native Method)
at contmon01.test(contmon01.java:116)
at contmon01.main(contmon01.java:89)
at java.lang.invoke.LambdaForm$DMH/0x000000ff01041000.invokeStatic(java.base@25-ea/LambdaForm$DMH)
at java.lang.invoke.LambdaForm$MH/0x000000ff01042400.invoke(java.base@25-ea/LambdaForm$MH)
at java.lang.invoke.Invokers$Holder.invokeExact_MT(java.base@25-ea/Invokers$Holder)
at jdk.internal.reflect.DirectMethodHandleAccessor.invokeImpl(java.base@25-ea/DirectMethodHandleAccessor.java:155)
at jdk.internal.reflect.DirectMethodHandleAccessor.invoke(java.base@25-ea/DirectMethodHandleAccessor.java:104)
at java.lang.reflect.Method.invoke(java.base@25-ea/Method.java:565)
at com.sun.javatest.regtest.agent.MainWrapper$MainTask.run(MainWrapper.java:138)
at java.lang.Thread.runWith(java.base@25-ea/Thread.java:1487)
at java.lang.Thread.run(java.base@25-ea/Thread.java:1474)