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  1. JDK
  2. JDK-8340276

Test java/lang/management/ThreadMXBean/Locks.java failed with NullPointerException

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    • Icon: Bug Bug
    • Resolution: Fixed
    • Icon: P4 P4
    • 24
    • 24
    • core-svc

        ----------System.out:(16/487)----------
        LockAThread about to block on OBJB
        LockBThread about to block on OBJC
        LockAThread blocked on Locks$ObjectB@27ff6391
        ownerInfo = "LockBThread" daemon prio=5 Id=23 BLOCKED on Locks$EnhancedWaiter@66397cfd owned by "MainThread" Id=21


         Owner = LockBThread id = 23
        LockBThread Id = 23 blocked on Locks$EnhancedWaiter@66397cfd
        ownerInfo = "MainThread" prio=5 Id=21 RUNNABLE


         Owner = MainThread id = 21
        MainThread Id = 21 blocked on null

        LockAThread blocked on Locks$ObjectB@27ff6391

        ----------System.err:(14/939)----------
        java.lang.NullPointerException: Cannot invoke "java.lang.management.ThreadInfo.getThreadId()" because "<local13>" is null
        at Locks.findOwnerInfo(Locks.java:425)
        at Locks.doCheck(Locks.java:470)
        at Locks.findThreadsBlockedOn(Locks.java:443)
        at Locks.main(Locks.java:385)
        at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
        at java.base/java.lang.reflect.Method.invoke(Method.java:573)
        at com.sun.javatest.regtest.agent.MainWrapper$MainTask.run(MainWrapper.java:138)
        at java.base/java.lang.Thread.run(Thread.java:1576)

              kevinw Kevin Walls
              dholmes David Holmes
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                Created:
                Updated:
                Resolved: