IZ68372: GETGRENT_R CAUSES SIGSEGV WHEN INVOKED BY MULTIPLE THREADS. APPLIES TO AIX 5300-11

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• getgrent_r causes memory corruption resulting in SIGSEGV
  when invoked by multiple threads simultaneously.
  

Local fix

• A local fix is to serialize all access to getgrent_r().
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:
  * Systems running the 5300-11 Technology Level with the
  * bos.rte,libc fileset below the 5.3.11.3 level.
  ****************************************************************
  * PROBLEM DESCRIPTION:
  * Applications that make multiple simultaneous calls to
  * getgrent_r() may crash with SIGSEGV.
  ****************************************************************
  * RECOMMENDATION:
  * Install APAR IZ68372.
  ****************************************************************
  

Problem conclusion

• The local static that was still being used in the threaded
  code path, has been completely removed from the threaded code
  path.
  

Temporary fix

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

Comments

• 5300-08 - use AIX APAR IZ70703
  5300-09 - use AIX APAR IZ69194
  5300-10 - use AIX APAR IZ68763
  5300-11 - use AIX APAR IZ68372
  5300-12 - use AIX APAR IZ73928
  6100-05 - use AIX APAR IZ73931
  

APAR Information

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

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

  IZ68763 IZ69194 IZ70274 IZ70703 IZ71102 IZ72584 IZ73918 IZ73928
  IZ73931 IZ75408

Fix information

• Fixed component name

  AIX 5.3

• Fixed component ID

  5765G0300

Applicable component levels

• R530 PSY U832845

     UP10/05/14 I 1000

PTF to Fileset Mapping

• U832845 bos.rte.libc 5.3.11.3