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IZ93766: VFS ASSERT BECAUSE CIFS VNODE/GNODE FREED WHILE IN USE APPLIES TO AIX 6100-03

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APAR status

  • Closed as program error.

Error description

  • When a file is accessed in a CIFS mount while that file
system is also being unmounted, AIX can sometimes crash
with a stack trace similar to this:

[00406F3C]bad_vnode_bad_caller+000000 (F1000100450B4880
[??])
[0040C874]vnop_getattr+000118 (??, ??, ??)
[0044B128]getstat+000020 (??, ??, ??, ??)
[0044BCA4]fstatx+0000F4 (??, ??, ??, ??)
[00003810].svc_instr+000110 ()

Local fix

  • The workaround is to unmount CIFS file systems as
infrequently as possible.

Problem summary

  • VFS assert because CIFS vnode/gnode freed while in use.

Problem conclusion

  • Put in place proper synchronization mechanism to prevent
any currently used vnode from getting freed.

Temporary fix

  • 



Comments


    

  • 5300-10 - use AIX APAR IZ91428
5300-11 - use AIX APAR IZ84228
5300-12 - use AIX APAR IZ91438
6100-03 - use AIX APAR IZ93766

    



APAR Information




    

  • APAR number
    IZ93766
    • 

  • Reported component name
    AIX 610 STD EDI
    • 

  • Reported component ID
    5765G6200
    • 

  • Reported release
    610
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Submitted date
    2011-01-28
    • 

  • Closed date
    2011-01-28
    • 

  • Last modified date
    2013-04-17
    • 





    

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

    
IZ84228
    

    • 

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

    • 



Fix information


    

  • Fixed component name
    AIX 610 STD EDI
    • 

  • Fixed component ID
    5765G6200
    • 



Applicable component levels


    

  • R610  PSY  U839082
       UP11/03/22  I  1000
    • 



PTF to Fileset Mapping








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            17 April 2013
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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