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IC71933: DB2WDOG CRASHES WITH A SEGMENTATION VIOLATION.

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • The db2wdog EDU may crash with a segmentation violation while it
    is cleaning up resources associated with a FMP process which has
    been terminated by db2agent EDU.
    
    In db2diag.log you will see db2wdog messages related to the FMP
    process clean-up with a NULL "pFmpEntry" followed by a record of
    the crash.
    
    A trap file will be produced containing the stack:
    sqlccfreebuffer
    sqlccfreebuffer
    sqlerCleanThreadResource
    sqlerTerminateFmp
    sqlerReturnFmpToPool
    sqleChildCrashHandler
    ...
    

Local fix

  • N/A.
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * All users of version 9.5 on Linux, Unix and Windows          *
    * platforms.                                                   *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * The db2wdog EDU may crash with a segmentation violation      *
    * while it is cleaning up resources associated with a FMP      *
    * process which has been terminated by db2agent EDU.           *
    *                                                              *
    * In db2diag.log you will see db2wdog messages related to the  *
    * FMP process clean-up with a NULL "pFmpEntry" followed by a   *
    * record of the crash.                                         *
    *                                                              *
    * A trap file will be produced containing the stack:           *
    * sqlccfreebuffer                                              *
    * sqlccfreebuffer                                              *
    * sqlerCleanThreadResource                                     *
    * sqlerTerminateFmp                                            *
    * sqlerReturnFmpToPool                                         *
    * sqleChildCrashHandler                                        *
    * ...                                                          *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Upgrade to DB2 UDB Version 9.5 FixPak 8 or higher levels.    *
    ****************************************************************
    

Problem conclusion

  • First fixed in DB2 UDB Version 9.5 FixPak 8.
    

Temporary fix

  • N/A.
    

Comments

APAR Information

  • APAR number

    IC71933

  • Reported component name

    DB2 FOR LUW

  • Reported component ID

    DB2FORLUW

  • Reported release

    950

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2010-10-15

  • Closed date

    2011-06-27

  • Last modified date

    2011-06-27

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

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

    IC71968

Fix information

  • Fixed component name

    DB2 FOR LUW

  • Fixed component ID

    DB2FORLUW

Applicable component levels

  • R950 PSN

       UP

[{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSEPGG","label":"DB2 for Linux, UNIX and Windows"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"9.5","Edition":"","Line of Business":{"code":"LOB10","label":"Data and AI"}}]

Document Information

Modified date:
27 June 2011