The following test timed out in the JDK21 CI:

runtime/reflect/ReflectOutOfMemoryError.java

Here's a snippet from the log file:

#section:main
----------messages:(8/305)----------
command: main ReflectOutOfMemoryError
reason: User specified action: run main/othervm ReflectOutOfMemoryError
started: Tue May 09 17:22:45 UTC 2023
Mode: othervm [/othervm specified]
Timeout information:
--- Timeout information end.
finished: Tue May 09 17:30:59 UTC 2023
elapsed time (seconds): 494.307
----------configuration:(0/0)----------
----------System.out:(15/624)----------
Starting test
pool[42387087]=new Object(); // elapsed 40.256s
pool[62748321]=new Object(); // elapsed 27.629s
pool[62748322]=new Object(); // elapsed 28.75s
pool[62764870]=new Object(); // elapsed 22.199s
pool[62764914]=new Object(); // elapsed 20.319s
pool[62764915]=new Object(); // elapsed 23.053s
pool[62764916]=new Object(); // elapsed 45.309s
pool[62764917]=new Object(); // elapsed 45.329s
pool[62764918]=new Object(); // elapsed 44.97s
pool[62764919]=new Object(); // elapsed 45.365s
Memory allocation became slow: so heap seems exhausted.
Timeout refired 480 times
OutOfMemoryError thrown as expected.
Test passed.
----------System.err:(1/15)----------
STATUS:Passed.
----------rerun:(36/6121)*----------

<snip>

result: Error. Program `/opt/mach5/mesos/work_dir/jib-master/install/jdk-21+22-1862/linux-aarch64-debug.jdk/jdk-21/fastdebug/bin/java' timed out (timeout set to 480000ms, elapsed time including timeout handling was 494300ms).

Please note that the test managed to PASS while the timeout
handler was running.