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IV62497: ASSERT IN VPM_UNFOLD_CPU(). APPLIES TO AIX 7100-04

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APAR status

  • Closed as program error.

Error description

  • System crash with following stack:
[00022080]abend_trap+000000 ()
[002FCFA4]vpm_unfold_cpu+0000A4 ()
[00082CA0]rsnm_mkxrset+000540 (??, ??)
[00793004]rsnm_set_named_rset+000224 (??, ??, ??, ??, ??)
[007936BC]registername+00013C (??, ??, ??, ??, ??, ??)
[0000386C]ovlya_addr_sc_flih_main+00014C ()

Local fix

  • 



Problem summary


    

  • If the system is having 'n' number of logical CPUs.
Disabling external interrupts on 'm' logical CPUs ( m < n)
and then creating exclusive rset with n-m CPUs is causing
system crash.

    



Problem conclusion


    

  • Creation of exclusive rset code is not taking care of
external interrupt disabled CPUs during the resource set
input validation and it should return with invalid value
as that will cause number of genereal purpose CPUs (gpcpus)
on LPAR to become '0' with current implementation.

    



Temporary fix


    

  • 



Comments


    

  • 6100-08 - use AIX APAR IV64422
6100-09 - use AIX APAR IV62438
6100-09 - use AIX APAR IV62438
7100-02 - use AIX APAR IV64241
7100-03 - use AIX APAR IV62394
7100-04 - use AIX APAR IV62497

    



APAR Information




    

  • APAR number
    IV62497
    • 

  • Reported component name
    AIX V7.1
    • 

  • Reported component ID
    5765H4000
    • 

  • Reported release
    710
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Submitted date
    2014-07-14
    • 

  • Closed date
    2014-07-14
    • 

  • Last modified date
    2016-05-11
    • 





    

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

    
IV60450
    

    • 

  • 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  U863867
       UP15/11/22  I  1000
    • 



PTF to Fileset Mapping








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            11 May 2016
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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