IV24740: Queue manager has memory exception when creating CHLAUTH records. FDC Probe IDs XC130004 or XC130031 are seen.

WebSphere MQ V7.5 Fix Pack 7.5.0.1
Fix Pack 7.1.0.3 for WebSphere MQ V7.1

APAR status

• Closed as program error.

Error description

• When attempting to add a correct CHLAUTH record, a queue
  manager agent process suffers a memory exception (example:
  SIGSEGV) and ends.
  
  Other connected applications using this agent process also end
  with a variety of errors, most likely MQRC_CONNECTION_BROKEN.
  
  The following FDCs might be seen:
  
  XC130004 xehExceptionHandler
  ZL043050 zlaMainThread        xecF_E_UNEXPECTED_RC
  ZL043105 zlaMainThread        STOP
  ZX005035 zxcProcessChildren   zrcX_AGENT_DEAD
  
  The xehExceptionHandler FDC will show a call stack similar to
  this:
  
  MQM Function Stack
  zlaMainThread
  zlaProcessMessage
  zlaProcessSPIRequest
  zlaSPIKernel
  zsqSPIKernel
  kpiGeneric
  kqiSetChlAuthMap
  rsxSetChlAuthMap
  rsiStoreChlPrf
  rsxSerialiseChlPrf
  xcsFFST
  
  On Windows the XC130004 might be XC130031.
  

Local fix

Problem summary

• ****************************************************************
  USERS AFFECTED:
  Users of CHLAUTH records when many CHLAUTH records are being
  added.
  
  Platforms affected:
  All Distributed (iSeries, all Unix and Windows)
  ****************************************************************
  PROBLEM SUMMARY:
  When adding many CHLAUTH records, sometimes it is necessary to
  re-allocate a memory block to hold more records. It was
  possible, when performing the re-allocating activity, for the
  queue manager code not to check that a pointer was null, but
  still address that pointer as though it was a valid pointer.
  Thus a memory exception was caused in the queue manager process.
  

Problem conclusion

• The queue manager code has been corrected to check for the
  value of null in that pointer, and thus avoid addressing it
  when it is in that state.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
                     v7.1
  Platform           Fix Pack 7.1.0.3
  --------           --------------------
  Windows            7.1.0.3
  AIX                7.1.0.3
  HP-UX (Itanium)    7.1.0.3
  Solaris (SPARC)    7.1.0.3
  Solaris (x86-64)   7.1.0.3
  iSeries            7.1.0.3
  Linux (x86)        7.1.0.3
  Linux (x86-64)     7.1.0.3
  Linux (zSeries)    7.1.0.3
  Linux (Power)      7.1.0.3
  
  Platform           v7.5
  --------           --------------------
  Multiplatforms     7.5.0.1
  
  The latest available maintenance can be obtained from
  'WebSphere MQ Recommended Fixes'
  http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006037
  
  If the maintenance level is not yet available information on
  its planned availability can be found in 'WebSphere MQ
  Planned Maintenance Release Dates'
  http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006309
  ---------------------------------------------------------------
  

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:

  PM76926

Fix information

• Fixed component name

  WMQ LIN X86 V7

• Fixed component ID

  5724H7224

Applicable component levels

• R710 PSY

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