PM88078: S0C4 ABEND IN EZBPTFND AFTER A SYSTEM LEAVES THE SYSPLEX

A fix is available

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • TCPIP is in a sysplex with DYNAMICXCF defined.  When a partner
    system leaves the sysplex (typically a normal shutdown), the
    potential exists for an ABENDS00C4 to occur in EZBPTFND within
    (roughly) 100ms of the EZZ4315I message associated with that
    system's XCF interface.
    
    
    Other Symptoms:
    
      The ABENDing SRB is running EZBIFOB1.
    
      The address passed as the first parameter to EZBPTFND (the
      Tree_Token value) from EZBIFATT will be x'00000008'.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * All users of the IBM Communications Server                   *
    * for z/OS Version 2 Release(s) 1 IP                           *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * (sysroute of PM85735)                                        *
    *                                                              *
    * Abend 0C4 in EZBPTFND while attempting                       *
    * to reference control block structures                        *
    * for an interface which has been                              *
    * marked deleted                                               *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * A partner system was removed from the sysplex                *
    * which results in the corresponding XCF interface             *
    * to that parnter being marked in deleted state.               *
    * A timer driven routine in EZBIFOUT performs                  *
    * outbound blocking processing for each active                 *
    * interface. This logic is incorrectly processing              *
    * the XCF interface which was just marked as                   *
    * deleted. EZBIFOUT calls EZBPTFND which                       *
    * abends accessing a control block structure                   *
    * which should only be referenced for an                       *
    * interface in active state.                                   *
    ****************************************************************
    

Problem conclusion

  • The parens on an IF statement in EZBIFOUT
    
    were incorrect. Fix the parens to ensure
    
    that EZBIFOUT will only call
    
    proc Blking_Timer for DIFs in active
    
    state.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PM88078

  • Reported component name

    TCP/IP V3 MVS

  • Reported component ID

    5655HAL00

  • Reported release

    210

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-04-29

  • Closed date

    2013-05-23

  • Last modified date

    2013-07-03

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

    PM85735

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

    UK94538

Modules/Macros

  • EZBIFOUT
    

Fix information

  • Fixed component name

    TCP/IP V3 MVS

  • Fixed component ID

    5655HAL00

Applicable component levels

  • R210 PSY UK94538

       UP13/06/26 P F306

Fix is available

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Document information


More support for:

z/OS family

Software version:

210

Operating system(s):

z/OS

Reference #:

PM88078

Modified date:

2013-07-03

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