The following test timed out in the JDK21 CI:

com/sun/jdi/BadHandshakeTest.java

Here's a snippet from the log file:

#section:driver
----------messages:(10/315)----------
command: driver BadHandshakeTest
reason: User specified action: run driver BadHandshakeTest
started: Sat May 20 07:45:52 UTC 2023
Mode: agentvm
Agent id: 11
Timeout refired 480 times
Timeout information:
--- Timeout information end.
finished: Sat May 20 07:59:29 UTC 2023
elapsed time (seconds): 817.072
----------configuration:(14/1323)*----------

<snip>

----------System.out:(2/1135)*----------
Starting debuggee...
Command line: [c:\\ade\\mesos\\work_dir\\jib-master\\install\\jdk-21+24-2030\\windows-x64-debug.jdk\\jdk-21\\fastdebug\\bin\\java.exe -cp C:\\sb\\prod\\1684568585\\testoutput\\test-support\\jtreg_open_test_jdk_jdk_jdi\\classes\\4\\com\\sun\\jdi\\BadHandshakeTest.d;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jdk-21+24-2030\\src.full\\open\\test\\jdk\\com\\sun\\jdi;C:\\sb\\prod\\1684568585\\testoutput\\test-support\\jtreg_open_test_jdk_jdk_jdi\\classes\\4\\test\\lib;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\7.2\\1\\bundles\\jtreg-7.2+1.zip\\jtreg\\lib\\jtreg.jar;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\7.2\\1\\bundles\\jtreg-7.2+1.zip\\jtreg\\lib\\junit-platform-console-standalone-1.9.2.jar;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\7.2\\1\\bundles\\jtreg-7.2+1.zip\\jtreg\\lib\\testng-7.3.0.jar;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\7.2\\1\\bundles\\jtreg-7.2+1.zip\\jtreg\\lib\\jcommander-1.78.jar;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\7.2\\1\\bundles\\jtreg-7.2+1.zip\\jtreg\\lib\\guice-4.2.3.jar -Xmx768m -XX:MaxRAMPercentage=4.16
result: Error. Agent error: java.lang.Exception: Agent 11 timed out with a timeout of 480 seconds; check console log for any additional details