The following test timed out in the JDK21 CI:

javax/sound/sampled/Clip/ClipFlushCrash.java

Here's a snippet from the log file:

Using mixer: com.sun.media.sound.DirectAudioDevice@5e56228
 got clip: com.sun.media.sound.DirectAudioDevice$DirectClip@58dd1cbb
 open
 clip.start
 for 10 seconds, call start/stop, setFramePosition, and flush from other threads
   flush thread: start
   setFramePosition thread: start
   start/stop thread: start
   open/close thread: start
   setFramePosition thread: setPosition to frame 364166
   flush thread: flush
   start/stop thread: stop
   open/close thread: close
   open/close thread: open
   setFramePosition thread: setPosition to frame 317861
   flush thread: flush
   setFramePosition thread: setPosition to frame 19186
   setFramePosition thread: setPosition to frame 239341
   flush thread: flush
   setFramePosition thread: setPosition to frame 187921
   start/stop thread: start
   setFramePosition thread: setPosition to frame 227631
   flush thread: flush
   start/stop thread: stop
   open/close thread: close
   open/close thread: open
   setFramePosition thread: setPosition to frame 333980
   flush thread: flush
   setFramePosition thread: setPosition to frame 170265
   setFramePosition thread: setPosition to frame 338270
   flush thread: flush
   setFramePosition thread: setPosition to frame 398590
   start/stop thread: start
   setFramePosition thread: setPosition to frame 24396
   flush thread: flush
   start/stop thread: stop
   open/close thread: close
   open/close thread: open
   setFramePosition thread: setPosition to frame 67895
   flush thread: flush
   setFramePosition thread: setPosition to frame 130847
   setFramePosition thread: setPosition to frame 179007
   flush thread: flush
   setFramePosition thread: setPosition to frame 151978
   start/stop thread: start
   setFramePosition thread: setPosition to frame 339417
   flush thread: flush
   start/stop thread: stop
   open/close thread: close
   open/close thread: open
   setFramePosition thread: setPosition to frame 261042
   flush thread: flush
   setFramePosition thread: setPosition to frame 243795
   setFramePosition thread: setPosition to frame 59361
   flush thread: flush
   setFramePosition thread: setPosition to frame 275337
   start/stop thread: start
   setFramePosition thread: setPosition to frame 369833
   flush thread: flush
   start/stop thread: stop
   open/close thread: close
   open/close thread: open
   setFramePosition thread: setPosition to frame 200468
   flush thread: flush
   setFramePosition thread: setPosition to frame 249991
   setFramePosition thread: setPosition to frame 197164
   flush thread: flush
   setFramePosition thread: setPosition to frame 176124
   start/stop thread: start
   setFramePosition thread: setPosition to frame 12086
   flush thread: flush
   open/close thread: close
   setFramePosition thread: setPosition to frame 142300
   flush thread: flush
   start/stop thread: stop
 finished.
   flush thread: terminate
   setFramePosition thread: terminate
   start/stop thread: terminate
   flush thread: exit
   setFramePosition thread: exit
   start/stop thread: exit
   open/close thread: terminate
 clip.close()
No crash -> Test passed
   open/close thread: exit
----------System.err:(2/170)----------
java.lang.IllegalArgumentException: Line unsupported: interface Clip supporting format PCM_SIGNED 44100.0 Hz, 16 bit, stereo, 4 bytes/frame, little-endian
STATUS:Passed.
----------rerun:(37/5427)*----------

<snip>

result: Error. Program `/opt/mach5/mesos/work_dir/jib-master/install/jdk-21+24-2009/linux-x64.jdk/jdk-21/bin/java' timed out (timeout set to 480000ms, elapsed time including timeout handling was 505727ms).


The test managed to PASS while the JTREG timeout handler was running.