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IJ35899: SYSTEM CRASH WHEN KPROC CODE IS UNLOADED BEFORE KPROC EXITS APPLIES TO AIX 7200-05

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APAR status

  • Closed as program error.

Error description

  • A timing problem can cause the system to crash if an
unconfiguration routine for a kernel extension unloads the
extension before an associated kproc has had a chance to exit.
This might occur if the kproc has a lower priority than the
unconfiguration routine.

Local fix

  • 



Problem summary


    

  • A timing problem can cause the system to crash if an
unconfiguration routine for a kernel extension unloads the
extension before an associated kproc has had a chance to exit.
This might occur if the kproc has a lower priority than the
unconfiguration routine.

    



Problem conclusion


    

  • Add a dependency between a kproc and the kernel extension that
defines it.  This will prevent the kernel extension from being
removed from memory until the kproc exists.

    



Temporary fix


    

  • 



Comments



APAR Information




    

  • APAR number
    IJ35899
    • 

  • Reported component name
    AIX V7.2
    • 

  • Reported component ID
    5765CD200
    • 

  • Reported release
    720
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Submitted date
    2021-11-02
    • 

  • Closed date
    2021-11-02
    • 

  • Last modified date
    2021-11-02
    • 





    

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

    
IJ20430
    

    • 

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

    • 



Fix information


    

  • Fixed component name
    AIX V7.2
    • 

  • Fixed component ID
    5765CD200
    • 



Applicable component levels


    








      
              
                            

              

              [{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSVEF8"},"Platform":[{"code":"PF053","label":"Power Systems"}],"Version":"720","Line of Business":{"code":"LOB08","label":"Cognitive Systems"}}]
              

                                                                    

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            03 November 2021
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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