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IV42579: CRASH IN SFWDPROCESSSCIOLEVENT ON RECURSIVE LOCK APPLIES TO AIX 7100-03

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APAR status

  • Closed as program error.

Error description

  • The machine asserted due to a recursive lock when processing
FC adapter events.  The top of the stack may look like this:
abend_trap+000000
slock+000614
disable_lock+0000C0
sfwdProcessSciolEvent+000384
efsc_scsi_async_notify+00012C

In addition, there will be a second less-favored interrupt
running on the same CPU that is currently somewhere
in sfwdOfflvlEvents.

Local fix

  • 



Problem summary


    

  • The machine asserted due to a recursive lock when processing
FC adapter events.  The top of the stack may look like this:
abend_trap+000000
slock+000614
disable_lock+0000C0
sfwdProcessSciolEvent+000384
efsc_scsi_async_notify+00012C

In addition, there will be a second less-favored interrupt
running on the same CPU that is currently somewhere
in sfwdOfflvlEvents.

    



Problem conclusion


    

  • Modify interrupt level used for locking in the storage
framework driver to avoid possibility of a recursive lock.

    



Temporary fix


    

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    IV42579
    • 

  • Reported component name
    AIX V7.1
    • 

  • Reported component ID
    5765H4000
    • 

  • Reported release
    710
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Submitted date
    2013-05-13
    • 

  • Closed date
    2013-05-13
    • 

  • Last modified date
    2013-11-24
    • 





    

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

    
IV41876
    

    • 

  • 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  U854712
       UP13/11/22  I  1000
    • 



PTF to Fileset Mapping








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            24 November 2013
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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