PM88954: SERVER - POTENTIAL ABEND S0C4 IN MODULE EDIQSS AFTER UPGRADE TO Z/OS 1.13 WHEN USING BUFNO > 1

A fix is available

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APAR status

  • Closed as program error.

Error description

  • Environment:  WDI 3.3.0 and z/OS 1.13.
    S0C4 began occurring after upgrading z/OS to 1.13
    There exists the potential for an abend S0C4 in EDIQSS as
    reported via LE message:
     CEE3204S The system detected a protection exception (System
       Completion Code=0C4).
     From entry point main at compile unit offset +00000406 at
       entry offset +00000406 at address 2A012816.
    And, from CEEDUMP Traceback:
    DSA  Entry     E  Offset  Statement   Load Mod    Status
     1   CEEHDSP   +0000422C              CEEPLPKA    Call
     2   DIQSS  12/19/0615.25 5655-I40 (c) Copyright IBM Corp.
                   +0000069A              EDIQSS      Exception
     3   FXXZCSD   2010.082
                   +00001656              EDIZCSD     Call
     4   main      +00000406              EDIIOS      Call
     5   eiclose   -2A103740              EDIEIEX     Call
     6   main      +00001A80              EDIEIEX     Call
     7   eximport  -29F2EA28              EDIFFUS     Call
     8   proccmd   +0000019E              EDIFFUS     Call
     9   main      +00000BB4              EDIFFUS     Call
     10  main      -295AD280              EDIFFUT     Call
     11  EDCZMINV  +000000C2              CEEEV003    Call
     12  CEEBBEXT  +000001C4              CEEPLPKA    Call
    
    The issue, as reported, occurs after PERFORM EXPORT of TPPROF's
    and upon close (FREEPOOL) of the EDIEIPRF file when BUFNO > 1.
    Example allocation:
    //EDIEIPRF  DD DSN=EDIS.GDG.EDIEIPRF(+1),DISP=(NEW,CATLG,CATLG),
    //             UNIT=DISK,BUFNO=20,AVGREC=K,
    //             DCB=(RECFM=VB,LRECL=8152,BLKSIZE=8156),
    //             SPACE=(8152,(1,1),RLSE)
    Note that the prtfile from PERFORM EXPORT export shows as
    complete:
    FF0512 Export processing has completed successfully on behalf
    of a PERFORM EXPORT command.
    
    Keywords: file close fclose free pool freepool buffer number
    ABEND0C4 ABENDS0C4 0C4 protection exception
    

Local fix

  • Change EDIEIPRF dd statement allocation to use BUFNO=1, e.g.
    //EDIEIPRF  DD DSN=EDIS.GDG.EDIEIPRF(+1),DISP=(NEW,CATLG,CATLG),
    //             UNIT=DISK,BUFNO=1,AVGREC=K,
    //             DCB=(RECFM=VB,LRECL=8152,BLKSIZE=8156),
    //             SPACE=(8152,(1,1),RLSE)
    

Problem summary

  • The issue, as reported, occurs after PERFORM EXPORT of TPPROF'
    and upon close (FREEPOOL) of the EDIEIPRF file when BUFNO > 1.
    Example allocation:
    //EDIEIPRF  DD DSN=EDIS.GDG.EDIEIPRF(+1),DISP=(NEW,CATLG,CATLG
    //             UNIT=DISK,BUFNO=20,AVGREC=K,
    //             DCB=(RECFM=VB,LRECL=8152,BLKSIZE=8156),
    //             SPACE=(8152,(1,1),RLSE)
    Note that the prtfile from PERFORM EXPORT export shows as
    complete:
    FF0512 Export processing has completed successfully on behalf
    of a PERFORM EXPORT command.
    

Problem conclusion

  • The FREEPOOL macro has changed.  The current FREEPOOL code
    expansion uses XR to clear a register and an
    ICM to load a 24 bit address.  The code described in the dump /
    analysis showed a Load storage command L
    xxxx.  In the current FREEPOOL there is also a check to see if
    the buffers have been freed previously, TM xxx followed by BZ,
    and the bit is set with an
    OI
    

Temporary fix

Comments

  • WDI 3.3 z/OS product only
    ž**** PE13/06/19 FIX IN ERROR. SEE APAR PM91428  FOR DESCRIPTION
    

APAR Information

  • APAR number

    PM88954

  • Reported component name

    WEBS DI ZOS

  • Reported component ID

    5655I4003

  • Reported release

    330

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-05-13

  • Closed date

    2013-05-20

  • Last modified date

    2013-06-19

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

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

    UK94513

Modules/Macros

  • ASSEMBLE EDIQSS
    

Fix information

  • Fixed component name

    WEBS DI ZOS

  • Fixed component ID

    5655I4003

Applicable component levels

  • R330 PSY UK94513

       UP13/05/30 P F305

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:

z/OS family

Software version:

330

Reference #:

PM88954

Modified date:

2013-06-19

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