The following two test failed in the JDK17 CI:

vmTestbase/gc/g1/unloading/tests/unloading_compilation_level4_keep_obj/TestDescription.java
vmTestbase/gc/g1/unloading/tests/unloading_compilation_level4_inMemoryCompilation_keep_obj/TestDescription.java

Here's a snippet from the unloading_compilation_level4_keep_obj log file:

In method of generated class. Random.nextDouble = 0.7275636800328681
 Printing bytesToReplace0 bytesToReplace2
WB error: failed to compile at level 4 method ClassAbc_24__________________________________::methodForCompilation
java.lang.RuntimeException: Method could not be enqueued for compilation at level 4
at gc.g1.unloading.loading.ClassLoadingHelper.warmUpClassIfNeeded(ClassLoadingHelper.java:294)
at gc.g1.unloading.loading.ClassLoadingHelper.loadClassThatGonnaDie(ClassLoadingHelper.java:194)
at gc.g1.unloading.UnloadingTest.run(UnloadingTest.java:109)
at nsk.share.test.Tests$TestRunner.execute(Tests.java:82)
at nsk.share.test.Tests$TestRunner.run(Tests.java:96)
at nsk.share.test.Tests.runTest(Tests.java:102)
at gc.g1.unloading.UnloadingTest.main(UnloadingTest.java:67)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
at java.base/java.lang.Thread.run(Thread.java:831)
----------System.err:(16/960)----------
nsk.share.TestFailure: Test exit code: 97
at nsk.share.test.Tests$TestRunner.execute(Tests.java:90)
at nsk.share.test.Tests$TestRunner.run(Tests.java:96)
at nsk.share.test.Tests.runTest(Tests.java:102)
at gc.g1.unloading.UnloadingTest.main(UnloadingTest.java:67)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
at java.base/java.lang.Thread.run(Thread.java:831)

JavaTest Message: Test threw exception: nsk.share.TestFailure: Test exit code: 97
JavaTest Message: shutting down test

STATUS:Failed.`main' threw exception: nsk.share.TestFailure: Test exit code: 97
----------rerun:(45/9296)*----------


Here's a snippet from the unloading_compilation_level4_inMemoryCompilation_keep_obj log file:

In method of generated class. Random.nextDouble = 0.7275636800328681
 Printing bytesToReplace0 bytesToReplace2
WB error: failed to compile at level 4 method ClassAbc_20__________________________________::methodForCompilation
java.lang.RuntimeException: Method could not be enqueued for compilation at level 4
at gc.g1.unloading.loading.ClassLoadingHelper.warmUpClassIfNeeded(ClassLoadingHelper.java:294)
at gc.g1.unloading.loading.ClassLoadingHelper.loadClassThatGonnaDie(ClassLoadingHelper.java:194)
at gc.g1.unloading.UnloadingTest.run(UnloadingTest.java:109)
at nsk.share.test.Tests$TestRunner.execute(Tests.java:82)
at nsk.share.test.Tests$TestRunner.run(Tests.java:96)
at nsk.share.test.Tests.runTest(Tests.java:102)
at gc.g1.unloading.UnloadingTest.main(UnloadingTest.java:67)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
at java.base/java.lang.Thread.run(Thread.java:831)
----------System.err:(16/960)----------
nsk.share.TestFailure: Test exit code: 97
at nsk.share.test.Tests$TestRunner.execute(Tests.java:90)
at nsk.share.test.Tests$TestRunner.run(Tests.java:96)
at nsk.share.test.Tests.runTest(Tests.java:102)
at gc.g1.unloading.UnloadingTest.main(UnloadingTest.java:67)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
at java.base/java.lang.Thread.run(Thread.java:831)

JavaTest Message: Test threw exception: nsk.share.TestFailure: Test exit code: 97
JavaTest Message: shutting down test

STATUS:Failed.`main' threw exception: nsk.share.TestFailure: Test exit code: 97
----------rerun:(45/9537)*----------

Both are GC tests failing in a GC test task so I'm starting this
bug off in hotspot/gc for initial triage.