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IV93883: PROBLEMS CAN OCCUR WITH THREAD_CPUTIME AND THREAD_CPUTIME_FAST APPLIES TO AIX 7200-00 17/04/21 PTF PECHANGE

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APAR status

  • Closed as program error.

Error description

  • ****************************************************************
* USERS AFFECTED:
* Systems running the AIX 7200-00 Technology Level
* with bos.mp64 at the 7.2.0.3 level.
****************************************************************
* ERROR DESCRIPTION:
* In the latest AIX Service Packs, using the thread_cputime or
* thread_cputime_fast interfaces can cause
* invalid data in the floating point and vector registers.
*
* This has been primarily seen to affect Oracle 11gR2 (11.2.0.3
* and 11.2.0.4), which use this interface.
* Multiple errors have been seen in these Oracle 11gR2 releases
* as a result of this issue, including:
* - ORA 600 errors
* - oracle process core dump
* - errors in redo logs and check sum errors in other blocks
****************************************************************
* RECOMMENDATION:
* Install APAR IV93883.
* Prior to fix availability, an interim fix is available from
* either
* ftp://aix.software.ibm.com/aix/ifixes/iv93883/
* https://aix.software.ibm.com/aix/ifixes/iv93883/
* The ifix can be installed using Live Update (LU).
* If LU is not used, installation of the ifix requires a
* reboot.
****************************************************************

Local fix

  • 



Problem summary


    

  • The thread_cputime or thread_cputime_fast interfaces can
cause invalid data in the FP/VMX/VSX registers if the thread
page faults in this function.

    



Problem conclusion


    

  • Remove potential for page fault.

    



Temporary fix


    

  •   *********
  * HIPER *
  *********

    



Comments


    

  • 



APAR Information




    

  • APAR number
    IV93883
    • 

  • Reported component name
    AIX V7.2
    • 

  • Reported component ID
    5765CD200
    • 

  • Reported release
    720
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    YesPE
    • 

  • HIPER
    YesHIPER
    • 

  • Submitted date
    2017-03-01
    • 

  • Closed date
    2017-03-01
    • 

  • Last modified date
    2017-04-21
    • 





    

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

    
IV93763
    

    • 

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

    
U876473
    

    • 



Fix information


    

  • Fixed component name
    AIX V7.2
    • 

  • Fixed component ID
    5765CD200
    • 



Applicable component levels


    

  • R720  PSY  U876473
       UP17/04/14  I  1000  Ž
    • 








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            21 April 2017
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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