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IV22062: APPLICATION CAN CRASH WHEN UNLOADING / RELOADING A LIBRARY APPLIES TO AIX 6100-07

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APAR status

  • Closed as program error.

Error description

  • This problem is only seen with C++ programs built on
AIX v5 and run on AIX v6 or v7.
.
The program must repeatedly load and unload libraries
that use static constructors during execution, then a
stale pointer to freed memory may be used and the
application may crash.
.
DB2 versions prior to DB2 10.1 have experienced this
problem appearing as DB2 server hang or crash, with
the trap file diagnostics frequently including malloc
or initializeXalan functions.

Local fix

  • 



Problem summary


    

  • ****************************************************************
* USERS AFFECTED:
* Systems running the 6100-07 Technology Level with the
* following filesets at the 6.1.7.15 level.
*   bos.64bit
*   bos.adt.prof
*   bos.rte.control
*   bos.rte.libc
*   bos.rte.shell
*   mcr.rte
****************************************************************
* PROBLEM DESCRIPTION:
* This problem is only seen with C++ programs built on
* AIX v5 and run on AIX v6 or v7.
*
* The program must repeatedly load and unload libraries
* that use static constructors during execution, then a
* stale pointer to freed memory may be used and the
* application may crash.
*
* DB2 versions prior to DB2 10.1 have experienced this
* problem appearing as DB2 server hang or crash, with
* the trap file diagnostics frequently including malloc
* or initializeXalan functions.
****************************************************************
* RECOMMENDATION:
* Install APAR IV22062.
* Prior to APAR availability, an interim fix is available at:
*
*  ftp://public.dhe.ibm.com/aix/ifixes/iv22062/
****************************************************************

    



Problem conclusion


    

  • Ensure proper handling of static constructor pointers

    



Temporary fix


    

  • *********
* HIPER *
*********

    



Comments


    

  • 



APAR Information




    

  • APAR number
    IV22062
    • 

  • Reported component name
    AIX 610 STD EDI
    • 

  • Reported component ID
    5765G6200
    • 

  • Reported release
    610
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    YesPE
    • 

  • HIPER
    YesHIPER
    • 

  • Submitted date
    2012-06-02
    • 

  • Closed date
    2012-06-07
    • 

  • Last modified date
    2013-02-26
    • 






Fix information


    

  • Fixed component name
    AIX 610 STD EDI
    • 

  • Fixed component ID
    5765G6200
    • 



Applicable component levels


    

  • R610  PSY  U853366
       UP12/07/17  I  1000  ®
    • 








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            26 February 2013
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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