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IV00700: PANIC DUE TO STACK OVERRUN WHEN USING DLPI APPLIES TO AIX 6100-04

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APAR status

  • Closed as program error.

Error description

  • Sometimes when using dlpi, a receive interrupt and
processing of the receive queues can nest deep enough to
overrun the space allocated for the interrupt stack.

The stack will be very long but is sometimes obscured
because a panic is hit in call_v_adspace_switch.  The
stack will have several calls to dlpirsrv, sq_wrapper,
csq_run, csq_turnover, and csq_lateral.

Local fix

  • 



Problem summary


    

  • Customer would experience a system crash.

    



Problem conclusion


    

  • Appropriate code changes made to include a new option in the
/etc/dlpi.conf to make dlpi run to spec. After this APAR is
applied, by default we will run NOTTOSPEC.

A sample line would be:

d+      dlpi    tr,s,r       /dev/dlpi/tr

    



Temporary fix


    

  • 



Comments


    

  • 5300-11 - use AIX APAR IZ99182
6100-04 - use AIX APAR IV00700

    



APAR Information




    

  • APAR number
    IV00700
    • 

  • Reported component name
    AIX 610 STD EDI
    • 

  • Reported component ID
    5765G6200
    • 

  • Reported release
    610
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Submitted date
    2011-05-19
    • 

  • Closed date
    2011-05-26
    • 

  • Last modified date
    2013-04-07
    • 






Fix information


    

  • Fixed component name
    AIX 610 STD EDI
    • 

  • Fixed component ID
    5765G6200
    • 



Applicable component levels


    

  • R610  PSY  U845195
       UP11/10/10  I  1000
    • 



PTF to Fileset Mapping








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            07 April 2013
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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