IV22982: APPLICATION CAN CRASH WHEN UNLOADING / RELOADING A LIBRARY APPLIES TO AIX 6100-06

Obtain the fix for this APAR.

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 6100-06 Technology Level with the
  * following filesets at the 6.1.6.18 level.
  *   bos.64bit
  *   bos.adt.prof
  *   bos.rte.control
  *   bos.rte.libc
  *   bos.rte.shell
  ****************************************************************
  * 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 IV22982.
  * Prior to APAR availability, an interim fix is available at:
  *
  *  ftp://public.dhe.ibm.com/aix/ifixes/iv22982/
  ****************************************************************
  

Problem conclusion

• Ensure proper handling of static constructor pointers
  

Temporary fix

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

Comments

APAR Information

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

  IV22062

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

Fix information

• Fixed component name

  AIX 610 STD EDI

• Fixed component ID

  5765G6200

Applicable component levels

• R610 PSY U853617

     UP12/08/13 I 1000