PK26908: ABEND0C4 IN EZBTCFAP(UQ94097 04.292)+001B38 TRYING TO STORE INTOLOW CORE.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• TCPIP abend S0c4 in EZBTCFAP(UQ94097 04.292)+001B38 while
  processing a accept call from an application.  TCPIP is trying
  to update the policy information.  The tcb_sla_info@ is loaded
  from the TCB control block in Reg 6 + x'310'.  The service and
  rule handles are loaded from the tcb_sla_info@.  The service
  handle is loaded into Reg 3 and is non-zero.  The rule handle is
  loaded into Reg 4 and is zero.  EZBTCFAP tries to update
  information in the rule control block and abends.  The
  connection being taken off the accept queue had just been reset
  by the client.  This caused information in the tcb_sla_info@ to
  be cleared out.
  .
  VERIFICATION STEPS:
  1) IP TCPIPCS DUAF will show module in EZBTCFAP
  2) IP TCPIPCS LOCK will show abending DUCB holding TCB lock
  shared and TCB2 lock exclusive
  3) The TCB pointed to be reg6 will have a IFR showing it has
  been though EZBTCSND, ProReset and Whitewash
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of the Communications Server for   *
  *                 z/OS Version 1 Release 8 IP                  *
  ****************************************************************
  * PROBLEM DESCRIPTION: ABEND0C4 in EZBTCFAP while processing   *
  *                      an accept call.                         *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  When policies are defined, additional processing is required
  when a connection is accepted.  This policy processing requires
  lock protection on the accepted connection due to possible
  asynchronous processing.
  +-------------------------------------------------------------+
  + 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

• Added locking scheme to protect the policy processing to
  prevent the abend.
  
  * Cross Reference between External and Internal Names
  

Temporary fix

Comments

APAR Information

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

  PK22714

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

  UK15880

Modules/Macros

• EZBTCFAP
  

Fix information

• Fixed component name

  TCP/IP V3 MVS

• Fixed component ID

  5655HAL00

Applicable component levels

• R180 PSY UK15880

     UP06/07/20 P F607

Fix is available

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