b30

java.lang.NullPointerException
    at com.sun.jmx.remote.generic.SynchroMessageConnectionImpl$MessageReader.run(SynchroMessageConnectionImpl.java:438)
    at com.sun.jmx.remote.util.ThreadService$ThreadServiceJob.run(ThreadService.java:199)
    at com.sun.jmx.remote.util.JobExecutor.run(JobExecutor.java:60)

Seen once on a slow RedHat 9/x86 box.
Looks that NPE is throwed but not caught by the test,
However, JavaTest got it as the test exit status then did not recognize it as a valid status and marked the test failed with an exit status 95, that means test passed.
TCK test = api/javax/management/remote/security/optional/index.html#JMXMPAuthenticatorTest