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PI33039: EDC5170I ERROR HAPPENS WHEN RUNNING CGI SCRIPT IN APACHE SERVER WITH WLM ENABLED

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APAR status

  • Closed as program error.

Error description

  • The APACHE server has WLM enabled via:
    LoadModule wlm_module modules/mod_wlm.so
    
    The invocation of a CIG script via a browser causes the
    following error to be written to the error_logs file.
    
    [error] [client xx.xx.xx.xx] (170)EDC5170I An error was
    encountered with WLM. (errno2=0x03330411): wlm: LeaveWorkUnit
    failed
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  Users of IBM HTTP Server 8.5 on z/OS using  *
    *                  the wlm_module enclave support.             *
    ****************************************************************
    * PROBLEM DESCRIPTION: When running cgi's with the enclave     *
    *                      support the IBM HTTP Server could log   *
    *                      the error message: error] [client       *
    *                      xx.xx.xx.xx] (170)EDC5170I An error     *
    *                      was                                     *
    *                      encountered with WLM.                   *
    *                      (errno2=0x03330411): wlm:               *
    *                      LeaveWorkUnit                           *
    *                      failed                                  *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    When running a cgi under an enclave there exists a race
    condition where the IBM HTTP Server child thread attempts to
    delete the enclave after the cgi process has completed
    processing the request but that cgi process has not completely
    been cleaned up yet.  The delete enclave returns with an error
    in this case and the server issues an error level message to
    the error_log.
    

Problem conclusion

  • The IBM HTTP Server will not issue an error level message but
    rather a debug level message when this race condition is
    encountered since it is not indicative of a real problem.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PI33039

  • Reported component name

    WAS IHS ZOS

  • Reported component ID

    5655I3510

  • Reported release

    850

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2015-01-20

  • Closed date

    2015-01-29

  • Last modified date

    2015-03-05

  • 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

    WAS IHS ZOS

  • Fixed component ID

    5655I3510

Applicable component levels

  • R800 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":"8.5","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
28 April 2022