CONTENTS:
 - Description
 - Prerequisites
 - Installation instructions
 - Support information
 - Legal notices

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PROBLEM FIXED: IZ47857
Module Name(s): sna_mux64

APAR DESCRIPTION:
Crash in sna_mux64

ERROR DESCRIPTION:
Crash in sna_mux64

PROBLEM SUMMARY:
  USERS AFFECTED: 
  All who have applications using the back-level APIs on 64-bit AIX.
  May be specific to AIX 6.1.

  PROBLEM DESCRIPTION:
  Crash in sna_mux64. 
  dump stack:
  [F1000000A07BC630]sna_mux64:v62_path_callback+0005B0 (0100000001000000, 0FFFFFFFF00FF990, F10006001C9D7D60) 
  [F1000000A071FCA0]sna_ddpmgr64:vpm_rcv_ips+00027C (F100070002143700)    
  [F1000000A0720D04]sna_ddpmgr64:vpm_rcv_msg+000068 (F100070002143800)    
  [F1000000A071F42C]sna_ddpmgr64:sna_p_vpm_stream_r_svc+00002C (F1000700004DD000)
  [F1000000A02665F4]pse:sq_wrapper+000134 (??)                            
  [F1000000A024CA9C]pse:csq_run+00029C (??)                               
  [F1000000A024BA6C]pse:csq_lateral+00036C (??, ??, ??)                   
  [F1000000A0267240]pse:scheduled_run+000100 ()
  
  PROBLEM SUMMARY:
  The crash occurs when starting an application that uses the
  back-level APPC API. If the 64-bit code segment in the kernel
  uses addresses over 0xffffffff then the crash will occur.

PROBLEM CONCLUSION:
  Code has been corrected to allow use of memory addresses higher
  that 0xffffffff.


Also included in this package are fixes for the following APARs:
NONE

More detail about each APAR can be found by performing a search for the
APAR number at http://www.ibm.com

------------------------------------------------------------------------

PREREQUISITES: 
This package requires fileset sna.rte at the 6.3.1.0 level.
To determine if the prequisite level is installed, use the command:

  lslpp -L "sna.rte"

If the output indicates a level other that 6.3.1.0, you will need to
update to the required level or obtain the version of this fix 
appropriate to the installed level. Product updates can be obtained
from 
  http://www.ibm.com/software/network/commserver/aix/support

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INSTALLATION
This package uses the AIX emgr tool for managing interim fixes. For more 
information, see AIX documentation and man pages for the emgr command.

- Download the fix package in binary format.
- Login as root.
- Install prerequisite level updates as necessary.
- Install the interim fix using the command:

    emgr -e IZ47857.090331.epkg.Z

A system reboot is required for the fix to take effect.

  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -

Installing this fix will lock one or more of the SNA filesets, which 
will prevent further installation of fixes, PTFs, or other maintenance.

In case a previous fix for CS/AIX is installed, check to be sure none of
the sna filesets are locked by an efix. Use the command lslpp -L 'sna.*'
and check the State column. If any fileset has an E in the State column,
then the fileset is locked and cannot be updated until the lock is 
cleared. Any attempt to update the locked fileset will fail with a 
message similar to the following:

   The following selected filesets are locked by EFIX manager:

   sna.rte

   installp has halted this operation because one or more files in the
   filesets listed above are registered as having an EFIX. You must remove
   these EFIXES before performing operations on the given fileset.

To get a listing of all locked filesets and the locking EFIX label,
execute the following command:

# /usr/sbin/emgr -P

To remove the relevant EFIX, execute the following command:

# /usr/sbin/emgr -r -L <EFIX label>

For more information on EFIX management, see the emgr man page and AIX
documentation. 

To clear the lock, follow the instructions provided in the message above.
Then proceed with the installation.

To obtain more information about the EFIX before removing it, execute
the following command:

# /usr/sbin/emgr -l -L <EFIX label> -v3

To verify whether the fix is included in a later update, visit the CS/AIX
Support site at 
http://www.ibm.com/software/network/commserver/aix/support/

------------------------------------------------------------------------

* CONTACT FOR Support:
* ____________________
*
*   If you have any questions, please call the IBM AIX SUPPORT CENTER
*   for your Country.  For example in the USA call: 1-800-CALL-AIX
*
*
*   VISIT OUR PAGES ON THE INTERNET
*   _______________________________
*
*   IBM Communications Server Support
*       http://www.ibm.com/software/network/commserver/support
*
*
* IBM COPYRIGHT INFORMATION:
* __________________________
*
*   IBM Communications Server for AIX, Version 6.3
*
*
*   (c)Copyright International Business Machines Corporation 2005, 2009.
*   All rights reserved.  Note to U.S. Government Users - Documentation
*   related to restricted rights - Use, duplication or disclosure is
*   subject to restrictions set forth in GSA ADP Schedule Contract
*   with IBM Corp.
*
*
* LIMIT OF LIABILITY:
* ___________________
*
*   License to the contained APAR fixes is conditioned upon the recipient
*   holding a license to the prerequisite product.  The license terms
*   and conditions of the APAR fixes are the same as those for the
*   prerequisite product.  Please see the product license for specifics.