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PI35866: CRASH IN LE MODULE VSNPRINTF +X'000027FC'

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APAR status

  • Closed as program error.

Error description

  • When invoking a certain WebSphere URL via HTTP server and plugin
    then HTTP server abends in module vsnprintf +x'000027FC' which
    is at level UI14148.
    Code is crashing from plugin call to attempt to print the URI.
    Plugin expects the URI to be held in the hts4_qstring value of
    the request but it appears to be empty-
    .
    QS joblog shows:
    ----------------
    sig_prgchk..
    ABEND signal SIGSEGV has been caught for Worker thread.
    IMW0085E ABEND signal 11 has been caught for thread type 1
    .
    Traceback shows folllowing:
    Entry       E  Offset  Statement   Load Mod     Service  Stat
    ----------- ---------  ---------   --------     -------  ----
    DUMPITX     +00070EEA              *PATHNAM              Call
    sig_prgchk  +000005F4              *PATHNAM              Call
    CEEPGTFN    +0000005A              CEEPLPKA              Call
    __zerros    +0000087C              CEEEV003     UI15767  Call
    CEEHDSP     +00000E0A              CEEPLPKA     UI18451  Call
    vsnprintf   +000027FC              CEEEV003  UI14148  Exception
    plg_vsnprintf
                +00000084              *PATHNAM     CF04144  Call
    logLog_ex   +000001F8              *PATHNAM     CF04144  Call
    logDebug    +0000008C              *PATHNAM     CF04144  Call
    htrequestWriteRequestLine
                +00000194              *PATHNAM     CF04144  Call
    htrequestWrite
                +00000236              *PATHNAM     CF04144  Call
    websphereExecute
                +00000570              *PATHNAM     CF04144  Call
    websphereWriteRequestReadResponse
                +00000450              *PATHNAM     CF04144  Call
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  IBM WebSphere Application Server V8.5       *
    *                  webserver plugin users on zOS               *
    ****************************************************************
    * PROBLEM DESCRIPTION: An abend can occur if you run           *
    *                      plugin at the DEBUG trace level.        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    When logging at debug level, some of the strings to be printed
    in the log were not formatted leading to a null pointer crash.
    

Problem conclusion

Temporary fix

  • Use a loglevel other than debug for plugin.
    

Comments

APAR Information

  • APAR number

    PI35866

  • Reported component name

    DGW/WAS OS/390

  • Reported component ID

    5697D4300

  • Reported release

    850

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2015-02-26

  • Closed date

    2015-03-13

  • Last modified date

    2015-03-13

  • 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

    WEBSPHERE FOR Z

  • Fixed component ID

    5655I3500

Applicable component levels

  • R850 PSY

       UP

[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SS7K4U","label":"WebSphere Application Server for z\/OS"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"850","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
28 April 2022