After JDK-8306758, this failure started popping up.

----------System.out:(10/781)----------
create Kill
Testing Kill
vmOpts: '-Xmx768m -XX:MaxRAMPercentage=1.78571 -Dtest.boot.jdk=/scratch/cplummer/jib/install/jdk/20/36/bundles/linux-x64/jdk-20_linux-x64_bin.tar.gz/jdk-20 -Djava.io.tmpdir=/scratch/cplummer/ws/jdk/jdk.clean2/build/linux-x64-debug/test-support/jtreg_open_test_jdk_com_sun_jdi_ConnectedVMs_java/tmp -Xcomp -XX:+CreateCoredumpOnCrash -ea -esa -XX:CompileThreshold=100 -XX:+UnlockExperimentalVMOptions -server -XX:-TieredCompilation -ea -esa'
javaOpts: ''
JVM version:21-internal
JDI version: 21.0
JVM description: Java Debug Interface (Reference Implementation) version 21.0
Java Debug Wire Protocol (Reference Implementation) version 21.0
JVM Debug Interface version 21.0
JVM version 21-internal (Java HotSpot(TM) 64-Bit Server VM, compiled mode, sharing)
----------System.err:(15/778)----------
java.lang.RuntimeException: Invalid debuggee exitValue: 0
at TestScaffold.waitForVMDisconnect(TestScaffold.java:750)
at TestScaffold.resumeToVMDisconnect(TestScaffold.java:978)
at ConnectedVMs.runTests(ConnectedVMs.java:117)
at TestScaffold.startTests(TestScaffold.java:434)
at ConnectedVMs.main(ConnectedVMs.java:51)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
at java.base/java.lang.reflect.Method.invoke(Method.java:578)
at com.sun.javatest.regtest.agent.MainActionHelper$AgentVMRunnable.run(MainActionHelper.java:333)
at java.base/java.lang.Thread.run(Thread.java:1583)