The following test failed in the JDK17 CI (with UT testing enabled):

gc/g1/plab/TestPLABResize.java

Here's a snippet from the log file:

[0.273s][debug][gc,heap] GC(9) garbage-first heap total 887808K, used 2157K [0x0000000088a00000, 0x0000000100000000)
[0.273s][debug][gc,heap] GC(9) region size 1024K, 1 young (1024K), 1 survivors (1024K)
[0.273s][debug][gc,heap] GC(9) Metaspace used 560K, committed 704K, reserved 1056768K
[0.273s][debug][gc,heap] GC(9) class space used 40K, committed 128K, reserved 1048576K
[0.273s][info ][gc ] GC(9) Pause Young (Normal) (WhiteBox Initiated Young GC) 2M->2M(867M) 4.180ms

----------System.err:(13/879)----------
java.lang.RuntimeException: Test failed! Expect that initial PLAB size should be less than checked. Initial size: 81872 Checked size:80056
at gc.g1.plab.TestPLABResize.checkResults(TestPLABResize.java:136)
at gc.g1.plab.TestPLABResize.main(TestPLABResize.java:92)
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.MainActionHelper$AgentVMRunnable.run(MainActionHelper.java:298)
at java.base/java.lang.Thread.run(Thread.java:831)

JavaTest Message: Test threw exception: java.lang.RuntimeException
JavaTest Message: shutting down test

result: Failed. Execution failed: `main' threw exception: java.lang.RuntimeException: Test failed! Expect that initial PLAB size should be less than checked. Initial size: 81872 Checked size:80056