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IV91029: TRAP IN VIOENT_INIT_LS_TIMER

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APAR status

  • Closed as program error.

Error description

  • When poll_uplink=yes is set, the system will crash with
the IAR in vioent_init_ls_timer.

Local fix

  • Turning poll_uplink to no avoids the issue until a fix
can be applied.

Problem summary

  • A compiler option is used with the vioentdd driver to
instrument a number of runtime checks.  These checks
are hit regularly by vioent_init_ls_timer(), which is
executed when poll_uplink=yes.

Problem conclusion

  • For now remove the compiler option to avoid the asserts.

Temporary fix

  • 



Comments


    

  • ×**** PE19/01/28 PTF IN ERROR. SEE APAR IJ02961  FOR DESCRIPTION

    



APAR Information




    

  • APAR number
    IV91029
    • 

  • Reported component name
    AIX V7.2
    • 

  • Reported component ID
    5765CD200
    • 

  • Reported release
    720
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Submitted date
    2016-11-25
    • 

  • Closed date
    2016-11-25
    • 

  • Last modified date
    2019-01-28
    • 





    

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

    
IV91004
    

    • 

  • 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


    

  • R720  PSY  U869950
       UP17/10/12  I  1000
    • 



PTF to Fileset Mapping








      
              
                            

              

              [{"Business Unit":{"code":"BU070","label":"IBM Infrastructure"},"Product":{"code":"SSVEF8","label":"AIX 7.2 Enterprise Edition"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"720","Edition":"","Line of Business":{"code":"LOB68","label":"Power HW"}},{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SG11S","label":"AIX 7.2 HIPERS, APARs and Fixes"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"720","Edition":"","Line of Business":{"code":"LOB08","label":"Cognitive Systems"}}]
              

                                                                    

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            10 September 2025
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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