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IV46850: CRASH IN V_PFEND_FSEG_PGOUT WHILE VMM IS PROCESSING NFS PAGE APPLIES TO AIX 6100-08

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APAR status

  • Closed as program error.

Error description

  • **************************************************************
* USERS AFFECTED:
* Systems running the 6100-08 Technology Level with
* bos.mp64 below the 6.1.8.17 level.
**************************************************************
* PROBLEM_DESCRIPTION:
* Customers running NFS could see a system crash on an NFS
* client, while VMM is processing pageout of an NFS page.
* The crash stack will be similar to:
*     (0)> f
*     pvthread+000C00 STACK:
*     ￭00022080abend_trap+000000 ()
*     ￭00343DECv_pfend_fseg_pgout+00086C ()
*     ￭003467B8v_pfend_fseg+000518 ()
*     ￭0034A19Cv_pfend_com+00053C ()
*     ￭00394510v_vtiol_dequeue+000190 ()
*     ￭000717A8begfst+000128 ()
**************************************************************
* RECOMMENDATION:
* Install APAR IV46850.
**************************************************************

Local fix

  • System will reboot. No workaround

Problem summary

  • **************************************************************
* USERS AFFECTED:
* Systems running the 6100-08 Technology Level with
* bos.mp64 below the 6.1.8.17 level.
**************************************************************
* PROBLEM_DESCRIPTION:
* Customers running NFS could see a system crash on an NFS
* client, while VMM is processing pageout of an NFS page.
* The crash stack will be similar to:
*     (0)> f
*     pvthread+000C00 STACK:
*      00022080 abend_trap+000000 ()
*      00343DEC v_pfend_fseg_pgout+00086C ()
*      003467B8 v_pfend_fseg+000518 ()
*      0034A19C v_pfend_com+00053C ()
*      00394510 v_vtiol_dequeue+000190 ()
*      000717A8 begfst+000128 ()
**************************************************************
* RECOMMENDATION:
* Install APAR IV46850.
**************************************************************

Problem conclusion

  • Change the VMM NFS client gather pages routine to not gather
both COMMIT and ASYNC page requests in the same stuct bufx I/O.

Temporary fix

  • *********
* HIPER *
*********

Comments

  • 



APAR Information




    

  • APAR number
    IV46850
    • 

  • Reported component name
    AIX 610 STD EDI
    • 

  • Reported component ID
    5765G6200
    • 

  • Reported release
    610
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    YesHIPER
    • 

  • Submitted date
    2013-08-09
    • 

  • Closed date
    2013-08-09
    • 

  • Last modified date
    2014-06-05
    • 





    

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

    
IV44039
    

    • 

  • 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  U859536
       UP14/02/17  I  1000
    • 



PTF to Fileset Mapping








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            05 June 2014
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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