IBM Support

MA43770 - LIC-COMM-PERFM LOOP IN SERVICE TCP/IP STACK AFTER A CONNECTION
IS RESET

Subscribe to this APAR

By subscribing, you receive periodic emails alerting you to the status of the APAR, along with a link to the fix after it becomes available. You can track this item individually or track all items by product.

Notify me when this APAR changes.

Notify me when an APAR for this component changes.

 APAR (Authorized Program Analysis Report)

Abstract

LIC-COMM-PERFM LOOP IN SERVICE TCP/IP STACK AFTER A CONNECTION
IS RESET

Error Description

Communications lock up.                                        
                                                               
Additional symptom:  tasks VIO-LAN-SE consuming CPU.            

Problem Summary

****************************************************************
* PROBLEM: (MA42700) Licensed Program = 5761999 for i 6.1 and  *
*                                        i 6.1.1               *
*                                       5770999 for i 7.1 and  *
*                                        i 7.2                 *
*           Crash/Hang Requiring an IPL to Recover             *
*           Looping Condition                                  *
****************************************************************
* USERS AFFECTED: All IBM i operating system users.            *
****************************************************************
* RECOMMENDATION: Apply LIC PTF MF58663 for i 6.1.             *
*                 Apply LIC PTF MF58662 for i 6.1.1.           *
*                 Apply LIC PTF MF58593 for i 7.1.             *
*                 Apply LIC PTF MF58661 for i 7.2.             *
****************************************************************
*                                                              
Loop in the service TCP/IP stack after a connection was reset,  
causes all communications to stop.                              

Problem Conclusion

While closing the connection that received the TCP reset, a    
control block was incorrectly referenced after being freed, and
led to improper processing when a new connection was received  
and used that same storage. The error has been corrected.      

Temporary Fix

                       *********                                
                       * HIPER *                                
                       *********                                

Comments

Circumvention


PTFs Available

R610 MF58663 PTF Cover Letter   1000
R611 MF58662 PTF Cover Letter   5063
R710 MF58593 PTF Cover Letter   4283
R720 MF58661 PTF Cover Letter   4276

Affected Modules

         
         

Affected Publications

Summary Information

Status............................................ CLOSED PER
HIPER........................................... Yes
Component.................................. 9400DG300
Failing Module.......................... RCHMGR
Reported Release................... R710
Duplicate Of..............................




System i Support

IBM disclaims all warranties, whether express or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. By furnishing this document, IBM grants no licenses to any related patents or copyrights. Copyright © 1996,1997,1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 IBM Corporation. Any trademarks and product or brand names referenced in this document are the property of their respective owners. Consult the Terms of use link for trademark information

[{"Type":"MASTER","Line of Business":{"code":"LOB57","label":"Power"},"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SWG60","label":"IBM i"},"Platform":[{"code":"PF012","label":"IBM i"}],"Version":"7.2.0"},{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG15Q","label":"APARs - OS\/400 General"},"Component":"","ARM Category":[],"Platform":[{"code":"PF012","label":"IBM i"}],"Version":"V5R3M5;V5R4M0;V5R4M5;V6R1M0;V6R1M1;V7R1M0;V7R2M0","Edition":"","Line of Business":{"code":"","label":""}},{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG16B","label":"APARs - i5\/OS V6R1 environment"},"Component":"","ARM Category":[],"Platform":[{"code":"PF012","label":"IBM i"}],"Version":"V5R3M5;V5R4M0;V5R4M5;V6R1M0;V6R1M1;V7R1M0;V7R2M0","Edition":"","Line of Business":{"code":"","label":""}}]

Document Information

Modified date:
17 March 2015