PM81004: REX1 AND OTHER ABENDS WHEN USING REXX/CICS COMMAND DEFCMD

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

  • Using the Rexx/CICS DEFCMD command may result in an REX1 and
    other abends such as a 2C5 when attempting to pass control to
    a loaded program.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All CICS users.                              *
    ****************************************************************
    * PROBLEM DESCRIPTION: REX1 abend when a Rexx exec attempts    *
    *                      to link to an assembler executable      *
    *                      phase.                                  *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    This is a route of APAR OW57607 that was opened for CICS/REXX
    running under CICS TS for z/OS.
    
    A Rexx exec defines an executable assembler load module
    by way of a DEFCMD with the CICSLOAD option specified,
    thus it will become a program loaded by an EXEC CICS LOAD.
    
    The Rexx exec attempts to drive the program by calling it
    as a function, routine CICHOST is driven which eventually
    attempts to branch to it by a BASSM R14,R15 instruction.
    However, this fails and the Rexx exec abends with a REX1
    abend code.  R15 does not contain the entry point of the
    program.
    
    The exact type of program check will depend on the branch
    address, but it could result in an 2C5/AKEB abend after a
    protection exception with reason code 20000038.
    
    DFHAP0001 IYBTZCCA An abend (code 2C5/AKEB) has occurred at
    offset X'FFFFFFFF'  in module CICREXD .
    
    DFHDU0203I A transaction dump was taken for dumpcode: REX1
    
    In addition, the CICPARMS control block address is not valid
    on entry to the Assembler program.
    
    Additional keywords: msgDFHAP0001 msgDFHDU0203I S2C5
    

Problem conclusion

  • CICHOST and CICDSCMD have been modified and an invocation of
    an assembler executable load module from a Rexx exec via a
    DEFCMD with the CICSLOAD option specified will now work.
    
    In addition, R1 on entry to the assembler load module will now
    address the CICPARMS control block as documented.
    

Temporary fix

  • FIX AVAILABLE BY PTF ONLY
    

Comments

APAR Information

  • APAR number

    PM81004

  • Reported component name

    CICSTS FOR VSE

  • Reported component ID

    564805400

  • Reported release

    B0P

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-01-21

  • Closed date

    2013-03-18

  • Last modified date

    2013-04-23

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

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

    UK92637

Modules/Macros

  •    CICDSCMD CICHOST
    

Fix information

  • Fixed component name

    CICSTS FOR VSE

  • Fixed component ID

    564805400

Applicable component levels

  • RB0P PSY UK92637

       UP13/03/20 P E512

Fix is available

  • Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.



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Document information


More support for:

CICS Transaction Server

Software version:

1.1.1

Reference #:

PM81004

Modified date:

2013-04-23

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