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IV65401: DTFJ DUMP READER LOOPS IN CIB CHAIN WHEN OPENING ZOS SVCDUMP

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APAR status

  • Closed as program error.

Error description

  • Error Message: N/A
    .
    Stack Trace: 3XMTHREADINFO3           Java
    callstack:4XESTACKTRACE                at
    com/ibm/j9ddr/corereaders/tdump/zebedee/le/CeexcibhTemplate.getC
    ibh_in_use(CeexcibhTemplate.java:46(Compiled Code))4XESTACKTRACE
                   at
    com/ibm/j9ddr/corereaders/tdump/zebedee/le/DsaStackFrame.findCib
    (DsaStackFrame.java:689(Compiled Code))4XESTACKTRACE
       at
    com/ibm/j9ddr/corereaders/tdump/zebedee/le/DsaStackFrame.ceextbc
    k(DsaStackFrame.java:265)4XESTACKTRACE                at
    com/ibm/j9ddr/corereaders/tdump/zebedee/le/DsaStackFrame.<init>(
    DsaStackFrame.java:111)4XESTACKTRACE                at
    com/ibm/j9ddr/corereaders/tdump/zebedee/le/Caa.getCurrentFrame(C
    aa.java:810)4XESTACKTRACE                at
    com/ibm/j9ddr/corereaders/tdump/zebedee/le/Caa.getFailingRegiste
    rs(Caa.java:306)4XESTACKTRACE                at
    com/ibm/j9ddr/corereaders/tdump/TDumpReader$TCBAdapter.<init>(TD
    umpReader.java:1175)4XESTACKTRACE                at
    com/ibm/j9ddr/corereaders/tdump/TDumpReader$EdbAdapter.getThread
    s(TDumpReader.java:959)4XESTACKTRACE                at
    com/ibm/j9ddr/corereaders/tdump/TDumpReader$EdbAdapter.getStackS
    ymbols(TDumpReader.java:783)4XESTACKTRACE                at
    com/ibm/j9ddr/corereaders/tdump/TDumpReader$EdbAdapter.loadModul
    es(TDumpReader.java:628)4XESTACKTRACE                at
    com/ibm/j9ddr/corereaders/tdump/TDumpReader$EdbAdapter.getModule
    s(TDumpReader.java:616)4XESTACKTRACE                at
    com/ibm/j9ddr/corereaders/tdump/TDumpReader$EdbAdapter.getModule
    s(TDumpReader.java:503)4XESTACKTRACE                at
    com/ibm/j9ddr/VMDataFactory.getStructureDataFileFromSymbol(VMDat
    aFactory.java:273)4XESTACKTRACE                at
    com/ibm/j9ddr/VMDataFactory.getStructureDataFile(VMDataFactory.j
    ava:230)4XESTACKTRACE                at
    com/ibm/j9ddr/VMDataFactory.getVMData(VMDataFactory.java:97)4XES
    TACKTRACE                at
    com/ibm/j9ddr/view/dtfj/image/J9DDRImageProcess.getRuntimes(J9DD
    RImageProcess.java:407)
    .
    Observed when opening the zOS dump in Memory Analyser, Dump
    Analyzer and jdmpview
    

Local fix

Problem summary

  • The DTFJ core reader loops when encountering an unexpected
    address in a chain of zOS CIB control blocks.
    

Problem conclusion

  • The DTFJ API has been updated to detect and avoid the loop.
    .
    This APAR will be fixed in the following Java Releases:
       7 R1 SR2       (7.1.2.0)
       6 R1 SR8 FP2   (6.1.8.2)
       7    SR8       (7.0.8.0)
    .
    Contact your IBM Product's Service Team for these Service
    Refreshes and Fix Packs.
    For those running stand-alone, Java maintenance is available
    from:
               https://www.ibm.com/developerworks/java/jdk/
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV65401

  • Reported component name

    J9 COMMON CODE

  • Reported component ID

    620700127

  • Reported release

    270

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2014-09-30

  • Closed date

    2014-09-30

  • Last modified date

    2014-09-30

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

Fix information

  • Fixed component name

    J9 COMMON CODE

  • Fixed component ID

    620700127

Applicable component levels

  • R270 PSY

       UP

  • R260 PSY

       UP

[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSNVBF","label":"Runtimes for Java Technology"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"7.0","Line of Business":{"code":"LOB36","label":"IBM Automation"}}]

Document Information

Modified date:
21 February 2022