Tests in question:

jdk/jfr/event/gc/collection/TestGCCauseWithG1ConcurrentMark.java
jdk/jfr/event/gc/collection/TestGCCauseWithG1FullCollection.java


Error message:
GC cause 'GCLocker Initiated GC' not in the valid causes[G1 Preventive Collection, G1 Compaction Pause, G1 Evacuation Pause, System.gc()]: expected true, was false

The failure superficially resembles the JDK-8268424, though it is not a new GC cause here.

Sample stack trace:

----------System.err:(13/924)----------
java.lang.RuntimeException: GC cause 'GCLocker Initiated GC' not in the valid causes[G1 Preventive Collection, G1 Compaction Pause, G1 Evacuation Pause, System.gc()]: expected true, was false
at jdk.test.lib.Asserts.fail(Asserts.java:594)
at jdk.test.lib.Asserts.assertTrue(Asserts.java:486)
at jdk.jfr.event.gc.collection.GCGarbageCollectionUtil.test(GCGarbageCollectionUtil.java:98)
at jdk.jfr.event.gc.collection.TestGCCauseWithG1ConcurrentMark.main(TestGCCauseWithG1ConcurrentMark.java:44)
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.MainActionHelper$AgentVMRunnable.run(MainActionHelper.java:312)
at java.base/java.lang.Thread.run(Thread.java:833)

Log:

Event: jdk.GarbageCollection {
  startTime = 02:06:00.907 (2021-12-13)
  duration = 2.18 ms
  gcId = 19
  name = "G1New"
  cause = "G1 Evacuation Pause"
  sumOfPauses = 2.18 ms
  longestPause = 2.18 ms
}

Event: jdk.GarbageCollection {
  startTime = 02:06:00.911 (2021-12-13)
  duration = 2.51 ms
  gcId = 20
  name = "G1New"
  cause = "GCLocker Initiated GC"
  sumOfPauses = 2.51 ms
  longestPause = 2.51 ms
}