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LI77305: PRINTER LOSES CONNECTION WHEN SSCP TAKEOVER OCCURS

A fix is available

Communications Server for Linux, Version 6.2.3 -- Last Fixpack

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APAR status

  • Closed as program error.

Error description

  • Communications Server for Windows
---------------------------------
Crash (blue screen) in appn.sys

Local fix

  • 



Problem summary


    

  • USERS AFFECTED: All

PROBLEM DESCRIPTION:
Crash in appn.sys

PROBLEM SUMMARY:
The root cause is triggered by certain start up sequences which
are all lead to CS/Win sending an ACTLU RSP with a TCP/IP
control vector (type 0x64). In some case the code (inside
appn.sys) corrupts the SNAPS messages which can actually corrupt
any part of the SNAPS dynamic memory  (buffers and control
blocks). The crash occurs at a later point in time (probably
within a few seconds) when the corrupted memory is accessed.

    



Problem conclusion


    

  • The source of the corruption has been identified and corrected.

    



Temporary fix


    

  • appn.sys

    



Comments


    

  • 



APAR Information




    

  • APAR number
    LI77305
    • 

  • Reported component name
    CS LINUX ON ZSE
    • 

  • Reported component ID
    5724I3400
    • 

  • Reported release
    623
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt / Xsystem
    • 

  • Submitted date
    2013-04-26
    • 

  • Closed date
    2013-04-26
    • 

  • Last modified date
    2013-04-26
    • 





    

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

    
JR44530
    

    • 

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

    • 



Fix information


    

  • Fixed component name
    CS LINUX ON ZSE
    • 

  • Fixed component ID
    5724I3400
    • 



Applicable component levels


    

  • R623  PSY  
       
    • 








      
              
                            

              

              [{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSDMF3","label":"Communications Server for Linux on zSeries"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"623","Line of Business":{"code":"LOB35","label":"Mainframe SW"}}]
              

                          

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            14 October 2021
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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