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IV61771: SYSTEM CAN CRASH DUE TO FIELDS BEING CLEARED ERRONEOUSLY. APPLIES TO AIX 7100-04

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APAR status

  • Closed as program error.

Error description

  • During LPAR/NPIV start operations (login, Nameserver queries,
etc.), there is a possibility of some fields (20 bytes) within
some structures in the fscsi driver scope being accidentally or
unexpectedly cleared or zero'ed out. As a result of this, when
the driver happens to access any of these fields that were
changed, unexpected problems including a system crash, a hang
or other issues, could potentially happen.
.
Here are some typical scenarios where this can happen:
- This only happens with Emulex SLI-4 FC/FCoE HBA/CNA 10Gb or
higher AIX Fibre channel drivers.
- This only happens on VIO servers, with LPARs with NPIV
configurations and mappings.
- This only happens when an NPIV admin operation fails. This
does not happen frequently.

Local fix

  • 



Problem summary


    

  • System(VIOS) Crash (DSI)

    



Problem conclusion


    

  • Re-arranged the code to avoid the crash.

    



Temporary fix


    

  • 



Comments


    

  • 6100-08 - use AIX APAR IV64465
6100-09 - use AIX APAR IV61759
6100-09 - use AIX APAR IV61759
7100-02 - use AIX APAR IV64283
7100-03 - use AIX APAR IV61764
7100-04 - use AIX APAR IV61771

    



APAR Information




    

  • APAR number
    IV61771
    • 

  • Reported component name
    AIX V7.1
    • 

  • Reported component ID
    5765H4000
    • 

  • Reported release
    710
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Submitted date
    2014-06-20
    • 

  • Closed date
    2014-06-20
    • 

  • Last modified date
    2016-05-11
    • 





    

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

    
IV61759
    

    • 

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

    • 



Fix information


    

  • Fixed component name
    AIX V7.1
    • 

  • Fixed component ID
    5765H4000
    • 



Applicable component levels


    

  • R710  PSY  U861547
       UP15/11/23  I  1000
    • 



PTF to Fileset Mapping








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            11 May 2016
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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