serviceability/sa/ClhsdbThreadContext.java failed with NullPointerException: Cannot invoke "sun.jvm.hotspot.gc.shared.GenCollectedHeap.getGen(int)" because "this.heap" is null

The following test failed in the JDK19 CI:

serviceability/sa/ClhsdbThreadContext.java

Here's a snippet from the log file:

Thread "Notification Thread" id=17140 Address=0x00007f76a419a020
r15: 0x00000000ace12900: Error: java.lang.NullPointerException: Cannot invoke "sun.jvm.hotspot.gc.shared.GenCollectedHeap.getGen(int)" because "this.heap" is null
java.lang.NullPointerException: Cannot invoke "sun.jvm.hotspot.gc.shared.GenCollectedHeap.getGen(int)" because "this.heap" is null
at jdk.hotspot.agent/sun.jvm.hotspot.utilities.PointerLocation.isInNewGen(PointerLocation.java:114)
at jdk.hotspot.agent/sun.jvm.hotspot.utilities.PointerLocation.printOn(PointerLocation.java:277)
at jdk.hotspot.agent/sun.jvm.hotspot.runtime.JavaThread.printThreadContextOn(JavaThread.java:498)
at jdk.hotspot.agent/sun.jvm.hotspot.CommandProcessor$46.doit(CommandProcessor.java:1699)
at jdk.hotspot.agent/sun.jvm.hotspot.CommandProcessor.executeCommand(CommandProcessor.java:2212)
at jdk.hotspot.agent/sun.jvm.hotspot.CommandProcessor.executeCommand(CommandProcessor.java:2182)
at jdk.hotspot.agent/sun.jvm.hotspot.CommandProcessor.run(CommandProcessor.java:2053)
at jdk.hotspot.agent/sun.jvm.hotspot.CLHSDB.run(CLHSDB.java:112)
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)
]
 exitValue = -1

java.lang.RuntimeException: Test ERROR java.lang.RuntimeException: 'Thread "Common-Cleaner"' missing from stdout/stderr

at ClhsdbThreadContext.main(ClhsdbThreadContext.java:109)
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:828)
Caused by: java.lang.RuntimeException: 'Thread "Common-Cleaner"' missing from stdout/stderr

at jdk.test.lib.process.OutputAnalyzer.shouldMatch(OutputAnalyzer.java:340)
at ClhsdbLauncher.runCmd(ClhsdbLauncher.java:166)
at ClhsdbLauncher.run(ClhsdbLauncher.java:203)
at ClhsdbThreadContext.main(ClhsdbThreadContext.java:60)
... 4 more

JavaTest Message: Test threw exception: java.lang.RuntimeException: Test ERROR java.lang.RuntimeException: 'Thread "Common-Cleaner"' missing from stdout/stderr

I've also include the NullPointerException that happened before
the complaint about Common-Cleaner.