The following test failed in the JDK19 CI:

serviceability/sa/ClhsdbJstack.java#id0

Here's a snippet from the log file:

Output:
Attaching to process 85637, please wait...
hsdb> hsdb> + verbose true
hsdb> + jstack -v
Command not valid until attached to a VM
hsdb> + quit
java version "19-ea" 2022-09-20
Java(TM) SE Runtime Environment (fastdebug build 19-ea+14-847)
Java HotSpot(TM) 64-Bit Server VM (fastdebug build 19-ea+14-847, mixed mode)
ERROR: catch_mach_exception_raise: Message doesn't denote a Unix soft signal. exception_type = 2, codes[0] = 1, codes[num_codes -1] = -725887583, num_codes = 2
ERROR: attach: wait_for_exception: mach_exc_server failure
ERROR: catch_mach_exception_raise() failed '(ipc/rcv) invalid scatter list entry' (268451853)
Unable to connect to process ID 85637:

Can't attach to the process. Issues with reception of the exception message.
sun.jvm.hotspot.debugger.DebuggerException: Can't attach to the process. Issues with reception of the exception message.
at jdk.hotspot.agent/sun.jvm.hotspot.debugger.bsd.BsdDebuggerLocal$BsdDebuggerLocalWorkerThread.execute(BsdDebuggerLocal.java:168)
at jdk.hotspot.agent/sun.jvm.hotspot.debugger.bsd.BsdDebuggerLocal.attach(BsdDebuggerLocal.java:282)
at jdk.hotspot.agent/sun.jvm.hotspot.HotSpotAgent.attachDebugger(HotSpotAgent.java:637)
at jdk.hotspot.agent/sun.jvm.hotspot.HotSpotAgent.setupDebuggerDarwin(HotSpotAgent.java:625)
at jdk.hotspot.agent/sun.jvm.hotspot.HotSpotAgent.setupDebugger(HotSpotAgent.java:371)
at jdk.hotspot.agent/sun.jvm.hotspot.HotSpotAgent.go(HotSpotAgent.java:336)
at jdk.hotspot.agent/sun.jvm.hotspot.HotSpotAgent.attach(HotSpotAgent.java:141)
at jdk.hotspot.agent/sun.jvm.hotspot.CLHSDB.attachDebugger(CLHSDB.java:188)
at jdk.hotspot.agent/sun.jvm.hotspot.CLHSDB.run(CLHSDB.java:67)
at jdk.hotspot.agent/sun.jvm.hotspot.CLHSDB.main(CLHSDB.java:44)
at jdk.hotspot.agent/sun.jvm.hotspot.SALauncher.runCLHSDB(SALauncher.java:281)
at jdk.hotspot.agent/sun.jvm.hotspot.SALauncher.main(SALauncher.java:500)
Caused by: sun.jvm.hotspot.debugger.DebuggerException: Can't attach to the process. Issues with reception of the exception message.
at jdk.hotspot.agent/sun.jvm.hotspot.debugger.bsd.BsdDebuggerLocal.attach0(Native Method)
at jdk.hotspot.agent/sun.jvm.hotspot.debugger.bsd.BsdDebuggerLocal$1AttachTask.doit(BsdDebuggerLocal.java:273)
at jdk.hotspot.agent/sun.jvm.hotspot.debugger.bsd.BsdDebuggerLocal$BsdDebuggerLocalWorkerThread.run(BsdDebuggerLocal.java:143)

[2022-03-14T20:07:22.497792Z] Waiting for completion for process 85656
[2022-03-14T20:07:22.497837Z] Waiting for completion finished for process 85656
 LingeredApp stdout: [];
 LingeredApp stderr: [java version "19-ea" 2022-09-20
Java(TM) SE Runtime Environment (fastdebug build 19-ea+14-847)
Java HotSpot(TM) 64-Bit Server VM (fastdebug build 19-ea+14-847, compiled mode)
]
 LingeredApp exitValue = 137
----------System.err:(52/3427)----------