IT20240: MQ client application generates FDC file with probe ID RM597000 RRCE_BAD_PARAMETER

APAR status

• Closed as program error.

Error description

• A failure data capture (FDC) record is observed from an MQ
  client application. The FDC record shows:
  ?+--------------------------------------------------------------
  ---------------+
  |                                       |
  | IBM MQ First Failure Symptom Report                     |
  | =========================================                  |
  |                                       |
  | [...]                                    |
  | Thread      :- 5  ChannelReceive                  |
  | UserApp      :- TRUE                          |
  | Last HQC     :- 0.0.0-0                        |
  | Last HSHMEMB   :- 0.0.0-0                        |
  | Last ObjectName  :-                            |
  | Major Errorcode  :- rrcE_BAD_PARAMETER                   |
  | Minor Errorcode  :- OK                           |
  | Probe Type    :- INCORROUT                       |
  | Probe Severity  :- 2                           |
  | Probe Description :- AMQ6125: An internal IBM MQ error has
  occurred.    |
  | FDCSequenceNumber :- 0                           |
  |                                       |
  +---------------------------------------------------------------
  --------------+
  MQM Function Stack
  cciReceiveThread
  ccxReceiveThreadFn
  cciProcessOne
  cciProcessUserData
  cciProcessAsyncRcv
  rriClientAsyncRcv
  rpqAddMessage
  xcsFFST
  

Local fix

Problem summary

• ****************************************************************
  USERS AFFECTED:
  This issue affects users of MQ client applications which use the
  asynchronous consume functionality to retrieve messages from a
  queue.
  
  
  Platforms affected:
  MultiPlatform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  Under certain circumstances the queue manager incorrectly copied
  memory between two overlapping buffers which led to a corruption
  of a message's MQMD data.  The corrupt MQMD was sent to the
  client which detected the corruption and reported an internal
  error.
  

Problem conclusion

• The MQ code within the queue manager has been updated to prevent
  this invalid memory copy.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v9.0 CD    9.0.4
  v9.0 LTS   9.0.0.2
  
  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:

Fix information

• Fixed component name

  IBM MQ BASE M/P

• Fixed component ID

  5724H7261

Applicable component levels

• R900 PSY

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