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  1. JDK
  2. JDK-6508261

NPE occurs in ThreadMXBean.getThreadInfo

    • Icon: Bug Bug
    • Resolution: Fixed
    • Icon: P3 P3
    • 7
    • 6
    • core-svc
    • b12
    • x86
    • linux, linux_redhat_3.0
    • Verified

        NPE occurs in ThreadMXBean.getThreadInfo, both in 5.0u10 and 6.0fcs.

        CONFIGURATION :
         CPU : Intel(R) Xeon(TM) CPU 2.40GHz * 2
         Mem : 2GB
         OS :Red Hat Enterprise Linux AS release 3 (Taroon Update 5)
            ( Linux kronos 2.4.21-32.ELsmp #1 SMP Fri Apr 15 21:17:59 EDT 2005 i686 i686 i386 GNU/Linux )

        REPRODUCE :
         1. unfold the attached test1.tgz
         2. Go to test1 directory and invoke
                java -Xmx3m -Djava.library.path=native_LINUX Main

        You will see the following message.

        -------
        kronos[14]% java -version
        java version "1.6.0"
        Java(TM) SE Runtime Environment (build 1.6.0-b105)
        Java HotSpot(TM) Server VM (build 1.6.0-b105, mixed mode)
        tbaba@kronos[15]% java -Xmx3m -Djava.library.path=native_LINUX Main
        java.lang.NullPointerException
                at java.lang.String.<init>(String.java:176)
                at java.lang.String.valueOf(String.java:2841)
                at java.lang.Thread.getName(Thread.java:1061)
                at java.lang.management.ThreadInfo.initialize(ThreadInfo.java:231)
                at java.lang.management.ThreadInfo.<init>(ThreadInfo.java:112)
                at sun.management.ThreadImpl.getThreadInfo0(Native Method)
                at sun.management.ThreadImpl.getThreadInfo(ThreadImpl.java:147)
                at sun.management.ThreadImpl.getThreadInfo(ThreadImpl.java:107)
                at Main.main(Main.java:15)
        kronos[16]%

              swamyv Swamy Venkataramanappa
              tbaba Tadayuki Baba (Inactive)
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                Created:
                Updated:
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