The following test failed in the JDK16 CI:

serviceability/sa/TestJhsdbJstackLineNumbers.java

Here's a snippet from the log file:

Output and diagnostic info for process 1083748 was saved into 'pid-1083748-output.log'
- LingeredAppWithBusyWork.busywork(int[]) @bci=2, line=64 (Interpreted frame)
c:\\ade\\mesos\\work_dir\\jib-master\\install\\jdk-16+17-754\\windows-x64-debug.jdk\\jdk-16\\fastdebug\\bin\\jhsdb.exe jstack --pid 1093388
[2020-09-21T15:42:53.761647500Z] Gathering output for process 1131356
[2020-09-21T15:42:56.819483300Z] Waiting for completion for process 1131356
[2020-09-21T15:42:56.819483300Z] Waiting for completion finished for process 1131356
Output and diagnostic info for process 1131356 was saved into 'pid-1131356-output.log'
- LingeredAppWithBusyWork.busywork(int[]) @bci=49, line=72 (Interpreted frame)
c:\\ade\\mesos\\work_dir\\jib-master\\install\\jdk-16+17-754\\windows-x64-debug.jdk\\jdk-16\\fastdebug\\bin\\jhsdb.exe jstack --pid 1093388
[2020-09-21T15:42:56.835089900Z] Gathering output for process 1137008
[2020-09-21T15:42:59.942666700Z] Waiting for completion for process 1137008
[2020-09-21T15:42:59.942666700Z] Waiting for completion finished for process 1137008
Output and diagnostic info for process 1137008 was saved into 'pid-1137008-output.log'
- LingeredAppWithBusyWork.busywork(int[]) @bci=5, line=64 (Interpreted frame)
Found Line Numbers: [64, 69, 71, 72]
 LingeredApp stdout: [];
 LingeredApp stderr: []
 LingeredApp exitValue = 0
LingeredAppWithBusyWork finished
----------System.err:(14/1030)----------
java.lang.RuntimeException: Failed: Didn't find enough line numbers: [64, 69, 71, 72]
at TestJhsdbJstackLineNumbers.runTest(TestJhsdbJstackLineNumbers.java:165)
at TestJhsdbJstackLineNumbers.main(TestJhsdbJstackLineNumbers.java:186)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
at java.base/java.lang.Thread.run(Thread.java:832)

JavaTest Message: Test threw exception: java.lang.RuntimeException: Failed: Didn't find enough line numbers: [64, 69, 71, 72]
JavaTest Message: shutting down test

STATUS:Failed.`main' threw exception: java.lang.RuntimeException: Failed: Didn't find enough line numbers: [64, 69, 71, 72]
----------rerun:(49/5913)*----------