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IV64724: CIFS_FS INFINITE LOOP IN SMB_RQ_ENQUEUE APPLIES TO AIX 7100-03

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APAR status

  • Closed as program error.

Error description

  • During an unmount, the CIFS driver may enter
an infinite loop.  The smbiod kernel process
associated with the share mount will consume
100% CPU.

The stack trace of the smbiod kernel process
will always begin as follows. Functions above
this vary.

nsmbdd:smb_rq_enqueue+000384 (??)
nsmbdd:smb_rq_simple+000054 (??)
nsmbdd:smb_smb_ssnclose@AF20_9+0000DC (??, ??, ??, ??)
nsmbdd:smb_iod_disconnect@AF30_11+0000BC (??, ??, ??)
nsmbdd:smb_iod_thread+000350 (??, ??, ??)

Local fix

  • 



Problem summary


    

  • During an unmount, the CIFS driver may enter
an infinite loop.  The smbiod kernel process
associated with the share mount will consume
100% CPU.

    



Problem conclusion


    

  • Check for unrecoverable loop conditions & break out.

    



Temporary fix


    

  • 



Comments


    

  • 6100-09 - use AIX APAR IV64307
6100-09 - use AIX APAR IV64307
7100-03 - use AIX APAR IV64724

    



APAR Information




    

  • APAR number
    IV64724
    • 

  • Reported component name
    AIX V7.1
    • 

  • Reported component ID
    5765H4000
    • 

  • Reported release
    710
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Submitted date
    2014-09-09
    • 

  • Closed date
    2014-09-09
    • 

  • Last modified date
    2015-05-22
    • 





    

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

    
IV64307
    

    • 

  • 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  U865720
       UP15/05/19  I  1000
    • 



PTF to Fileset Mapping








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            22 May 2015
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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