The following tests timed out in the JDK19 CI:

sun/tools/jhsdb/JStackStressTest.java
sun/tools/jhsdb/JShellHeapDumpTest.java
sun/tools/jhsdb/HeapDumpTestWithActiveProcess.java
sun/tools/jhsdb/HeapDumpTest.java
sun/tools/jhsdb/BasicLauncherTest.java
sun/tools/jhsdb/heapconfig/JMapHeapConfigTest.java

Here's a log file snippet from JStackStressTest.java:

#section:main
----------messages:(7/320)----------
command: main JStackStressTest
reason: User specified action: run main/timeout=240 JStackStressTest
Mode: othervm [test requires non-default system module]
Additional options from @modules: --add-modules jdk.hotspot.agent,java.management
Timeout information:
--- Timeout information end.
elapsed time (seconds): 969.48
----------configuration:(3/61)----------
Boot Layer
  add modules: jdk.hotspot.agent java.management

----------System.out:(7/417)----------
STDOUT: Executable=/System/Volumes/Data/mesos/work_dir/jib-master/install/jdk-19+8-403/macosx-x64-open.jdk/jdk-19.jdk/Contents/Home/bin/java
STDOUT: Identifier=net.java.openjdk-ea.java
STDOUT: Format=Mach-O thin (x86_64)
STDOUT: CodeDirectory v=20500 size=644 flags=0x10000(runtime) hashes=9+7 location=embedded
Target JDK is hardened. Some tests may be skipped.
STDOUT: Signature size=8977
Timeout refired 960 times
----------System.err:(12/751)----------
jtreg.SkippedException: SA Attach not expected to work. JDK is hardened.
at jdk.test.lib.SA.SATestUtils.skipIfCannotAttach(SATestUtils.java:67)
at JStackStressTest.main(JStackStressTest.java:104)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
at java.base/java.lang.reflect.Method.invoke(Method.java:577)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
at java.base/java.lang.Thread.run(Thread.java:833)

JavaTest Message: Test threw exception: jtreg.SkippedException: SA Attach not expected to work. JDK is hardened.
JavaTest Message: shutting down test

STATUS:Passed.Skipped: jtreg.SkippedException: SA Attach not expected to work. JDK is hardened.
----------rerun:(37/6960)*----------

<snip>

result: Error. Program `/System/Volumes/Data/mesos/work_dir/jib-master/install/jdk-19+8-403/macosx-x64-open.jdk/jdk-19.jdk/Contents/Home/bin/java' timed out (timeout set to 960000ms, elapsed time including timeout handling was 969476ms).


Please note that there's no complaint from codesign, e.g.:

Timed out waiting for the codesign process to complete. Assuming not signed.

so it seems we have yet another SA test failure mode.