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IV95631: TWO THREADS MAY TAKE THE PTHREAD_WRLOCK SIMULTANEOUSLY APPLIES TO AIX 7200-01 17/09/29 PTF PECHANGE

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APAR status

  • Closed as program error.

Error description

  • Two different threads may acquire the same write lock
using
pthread_rwlock_wrlock()under some circumstances.

Local fix

  • 



Problem summary


    

  • ****************************************************************
* USERS AFFECTED:
* Systems running the 7200-01 Technology Level with
* any of the following filesets at or between the given levels:
* MIN          MAX          FILESET
* 7.2.1.0      7.2.1.1      bos.adt.prof
* 7.2.1.0      7.2.1.0      bos.rte.libpthreads
****************************************************************
* PROBLEM DESCRIPTION:
* Two different threads may acquire the same write lock
* using
* pthread_rwlock_wrlock()under some circumstances.
****************************************************************
* RECOMMENDATION:
* Install APAR IV95631.
****************************************************************

    



Problem conclusion


    

  • Fixed the synchronization issue in the code.

    



Temporary fix


    

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    IV95631
    • 

  • Reported component name
    AIX V7.2
    • 

  • Reported component ID
    5765CD200
    • 

  • Reported release
    720
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    YesPE
    • 

  • HIPER
    NoHIPER
    • 

  • Submitted date
    2017-05-01
    • 

  • Closed date
    2017-05-01
    • 

  • Last modified date
    2017-10-05
    • 





    

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

    
IV94210
    

    • 

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

    
U878409
    

    • 



Fix information


    

  • Fixed component name
    AIX V7.2
    • 

  • Fixed component ID
    5765CD200
    • 



Applicable component levels


    

  • R720  PSY  U878409
       UP17/10/05  I  1000  Ø
    • 








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            05 October 2017
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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