PH59012: ABEND0C4 USING CONFIGTEST (OR -T) FOR IHS ON Z/OS

APAR status

• Closed as program error.

Error description

• The command runs but takes an abend during termination.  It does
  not affect the processing of the command.
  
  
  Invoking the command, shows this output when the abend occurs:
  
  $ bin/apachectl -t
  
  
  Syntax OK
  
  
  CEE3204S The system detected a protection exception (System
  Completion Code=0C4)
  .
  
  
          From compile unit dso_cleanup@AF8_1 at entry point
  dso_cleanup@AF8_1 at
  compile unit offset +000000000000003C at entry offset
  +000000000000003C at address 000000000E6FD2CC.
  
  
  
  A dump shows this is happening during termination of the
  program:
  dso_cleanup@AF8_1			+0000003C		dso.c
  apr_pool_destroy			+000000BE		apr_pools.c
  apr_pool_destroy			+0000007E		apr_pools.c
  destroy_and_exit_process	+00000062 		main.c
  main
  

Local fix

• add this to the end of IHSROOT/bin/envvars:
  export  _EDC_PUTENV_COPY=YES
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM HTTP Server on zOS         *
  ****************************************************************
  * PROBLEM DESCRIPTION: At the end of apachectl -t              *
  *                      (configuration test), IHS reports an    *
  *                      OC4 ABEND with dso_cleanup() in the     *
  *                      stack.                                  *
  *                      There is no impact to normal startup    *
  *                      or                                      *
  *                      shutdown.                               *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  During `apachectl -t`, each module is loaded,  initialized with
  the server configuration, then unloaded to make sure a
  subsequent stop/start will succeed.
  A programming error was introduced that only runs during this
  configuration test, corrupting the process environment when
  mod_ibm_ssl is uploaded, causing a subsequent unload of a
  module
  to be likely to crash.
  

Problem conclusion

• The code was updated to avoid calling putenv() with string
  literals from dynamically loaded modules.
  
  The fix for this APAR is targeted for inclusion in IBM HTTP
  Server fix packs 8.5.5.26 and 9.0.5.19. For more information, se
  'Recommended Updates for WebSphere Application Server':
  https://www.ibm.com/support/pages/node/715553
  

Temporary fix

Comments

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

  WAS IHS ZOS

• Fixed component ID

  5655I3510

Applicable component levels