PM85735: S0C4 ABEND IN EZBPTFND AFTER A SYSTEM LEAVES THE SYSPLEX

Obtain the fix for this APAR.

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

• None
  .
  KEYWORDS:  ABEND0C4 0C4 AB0C4
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of the IBM Communications Server   *
  *                 for z/OS Version 1 Release(s) 12 and 13 IP   *
  ****************************************************************
  * PROBLEM DESCRIPTION: 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.
  +-------------------------------------------------------------+
  + Please check our Communications Server for OS/390 homepages +
  + for common networking tips and fixes.  The URL for these    +
  + homepages can be found in Informational APAR II11334.       +
  +-------------------------------------------------------------+
  

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.
  
  * Cross Reference between External and Internal Names
  

Temporary fix

Comments

APAR Information

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

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

  UK93535 UK93536 PM88078

Modules/Macros

• EZBIFOUT
  

Fix information

• Fixed component name

  TCP/IP V3 MVS

• Fixed component ID

  5655HAL00

Applicable component levels

• R1C0 PSY UK93535

     UP13/05/15 P F305

• R1D0 PSY UK93536

     UP13/05/15 P F305

Fix is available

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