PK24824: WHEN PROGRAM IS ASSEMBLER AND THE SDWAINTF IS 1, THEN THE SYSTEM REGISTERS AND PSW SHOULD BE PROPAGATED TO THE TACB.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Do to the lack of "Fencing" around the Assembler environment
  the SDWAXFLG flag is from either the Linkage Stack or RB. If
  the program is Assembler and the SDWAINTF is 1, then the system
  registers and PSW should be propagated to the TACB. The most
  valuable information from the actual moment of the program
  check should be placed in easily accessible TACB block as
  opposed to the KERRD that is quite complicated to access.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All.                                         *
  ****************************************************************
  * PROBLEM DESCRIPTION: Following a program check in an         *
  *                      assembler subprogram which had issued a *
  *                      BAKR, the wrong PSW and registers are   *
  *                      recorded by the CICS exit, DFHKESTX.    *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  An assembler subprogram which uses a BAKR instruction is called
  with a BASSM instruction.  Following a program check in the
  subprogram, the wrong PSW and registers are recorded by the CICS
  ESTAE exit, DFHKESTX.  The PSW and registers are those from the
  linkage stack entry generated by the BAKR instruction, instead
  of the PSW and registers at the time of the program check.  When
  the CICS Kernel control blocks in the dump produced at the time
  of the program check are formatted, the Kernel Error Data and
  associated PSW and registers are incorrect, as is the TACB.
  
  Additional keywords: SDWAXFLG SDWARC1 SDWARC2 SDWASRSV SDWAARSV
                       KERNEL_ERROR_DATA TASK_ENTRY RECORD_ERROR
                       DFHKERRD
  

Problem conclusion

• DFHKESTX has been changed to use the SDWA indicators to
  establish if the program check occurred under a linkage
  stack entry created under the CICS RB.
  

Temporary fix

• FIX AVAILABLE BY PTF ONLY
  

Comments

APAR Information

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

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

  UK17644

Modules/Macros

•    DFHKESTX
  

Fix information

• Fixed component name

  CICSTS 3.1 Z/OS

• Fixed component ID

  5655M1500

Applicable component levels

• R400 PSY UK17644

     UP06/09/01 P F608

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.