OA51139: CSV019I CSV028I BPXP018I ABEND306 RSN0C OMVS EXTERNAL LINK LOAD MVS APF

APAR status

• Closed as unreproducible in next release.

Error description

• A user attempts to compile a c program with the xlc compiler and
  gets a S306 RSN0C ABEND .  This abend will occur for any
  EXTERNAL LINK module that resides in a non authorized  MVS
  library (Not in the APF list)
  
  ANALYSIS:
  Customer attempts to compile a c program:
  
  xlc dan.c
  
  FSUM3224 xlc: Fatal error in /usr/lpp/cbclib/xlc/exe/ccndrvr:
  signal 9 received.
  
  In the SYSLOG:
  
  CSV019I REQUESTED MODULE CCNDRVR  NOT ACCESSED, IS IN NON-APF
  LIBRARY/CONCATENATION
  
  CSV028I ABEND306-0C  JOBNAME=QM6M7V85 STEPNAME=STEP1
  
  BPXP018I THREAD 3D97500000000000, IN PROCESS 34078895, ENDED
  WITHOUT BEING UNDUBBED WITH COMPLETION CODE 84306000 , AND
  REASON CODE 0000000C.
  
  The dump shows the following processes active at the time of
  dump:
  
  Process Userid  Asid  Parent   Process
  ID                   PID     Group ID
  ----------------------------------------
  02020294 Z0601DL 0145 020200F0  02020294 OMVS
  01020265 Z0601DL 0139 02020294  01020265 /bin/sh
  020201FD Z0601DL 012C 01020265  01020265
                     /bin/../usr/lpp/cbclib/xlc/bin/.orig/xlc
  020002EA Z0601DL 0031 020201FD  01020265
                 /usr/lpp/cbclib/xlc/exe/ccndrvr
  
  KNOWN IMPACT:
  The abend terminates the work in progress.
  
  VERIFICATION STEPS:
  If the FSUM3224 was received, take the path name and verify that
  the file is an external link:
  
      ls -l /usr/lpp/cbclib/xlc/exe/ccndrvr
  erwxrwxrwx   1 AMINL    OMVSGRP        7 Dec  8  2015
             /usr/lpp/cbclib/xlc/exe/ccndrvr -> CCNDRVR
  
  The e in column one indicates that this is an external link and
  the CCNDRVR to the right of the arrow sign ( -> ) is the MVS
  program name that needs to be loaded and executed.
  
  Verify if the library, where the identified MVS program
  resides, is authorized. The problem shows-up if the library is
  NOT APF authorized.
  
  The JSCB pointed to by the TCBJSCB  must also have the JSCBAUTH
  bit turned on.
  
  CB: 007E9118 JSCB..... 007FC26C  JSCBOPTS.... 01 (01=JSCBAUTH)
  
  Issue the summary format and locate the RB that issued the LOAD
  SVC (SVC 8).  Take note of the PSW and verify if BPXPRECP is the
  issuer:
  
  PRB: 007E9320
      -0020  XSB..... 7FFFDAC0 FLAGS2... 00
      -0004  WLIC.... 00020008
      +0000  RSV..... 00000000 00000000 OPSW.... 078D0001 830C3304
  
      +001C  LINK..... 007E9090
  
  IP BPXWHERE 30C3304
  
  30C3304 at BPXPRECP+4E94
  Module information: 04/15/16 UA81345  BPXINLPA
  
  If the LOAD SVC was issued from the SynchAndLoad subroutine
  under the Loadit header, this APAR applies
  
  ADDITIONAL SYMPTOMS:
  ABEND306 RSN0C MSGCSV028I MSGCSV019I MSGBPXP018I
  

Local fix

• BYPASS/CIRCUMVENTION:
  Add the library, where the LOAD module pointed by the external
  link resides, to the APF list
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of z/OS Unix System Services       *
  ****************************************************************
  * PROBLEM DESCRIPTION: ABEND306 RSN0C when external link load  *
  *                      module is loaded from a non-APF         *
  *                      authorized library.                     *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  ABENDS306 RSN0C in exec phase 2 processing (BPXPRECP)
  attempting to load an externally linked file from a library
  that is not APF authorized.
  

Problem conclusion

• BPXPRECP will be changed so that it performs the load without
  APF authorization.  This way, the load will be successful
  whether or not the program is in an APF-authorized library.
  After the load is complete, BPXPRECP will set its authorization
  to meet that of the loaded program.
  

Temporary fix

Comments

• This APAR is being closed UR1 with the awareness of the
  submitting customer.  This means that a fix to this APAR is
  expected to be delivered from IBM in a release (if any) to be
  available within the next 36 months.
  

APAR Information

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

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

Fix information

• Fixed component name

  OPENMVS SYS SRV

• Fixed component ID

  5695SCPX1

Applicable component levels

• R7A0 PSN

     UP

• R790 PSN

     UP