IZ16834: SIGBUS OR SIGSEGV IN LIBDB2OSSE LIBRARY IN _GTRACEENTRYVAR OR GTRACEATTACH

APAR status

• Closed as fixed if next.

Error description

• A program loading the DB2 native libraries (e.g. a CLI
  program) may experience a SIGSEGV or SIGBUS crash if the
  application references a variable 'g_pTrace'. This is an
  internal global variable (i.e. reserved). It is not intended to
  be referenced by external applications.
  

Local fix

• Do not define any application variables as 'g_ptrace'.
  
  To prevent further issues of this type, this variable will be
  renamed to decrease the potential for accidental reference.
  

Problem summary

• Users Affected: Users of applications whych dynamically load the
  DB2 native libraries (libdb2.a or libdb2.so)
  
  Problem Description:
  
  A program loading the DB2 native libraries (e.g. a CLI
  program) may experience a SIGSEGV or SIGBUS crash if the
  application references a variable 'g_pTrace'. This is an
  internal global variable (i.e. reserved). It is not intended to
  be referenced by external applications.
  
  
  Problem Conclusion:
  This issue is fixed in a future release (DB2 version 9.1,
  starting at Fix Pack 6).
  

Problem conclusion

Temporary fix

Comments

APAR Information

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

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

  IZ16835 IZ16840 IZ33133

Fix information

Applicable component levels

• R910 PSY

     UP

• R950 PSY

     UP

• R810 PSN

     UP

• R820 PSN

     UP