PM41107: DYNAMICALLY LOADING A COMPILED MAP IN A WEBSPHERE MESSAGE FLOW CAN LEAD TO A BIPMSGS 'NULL DATA BUFFER POINTER' ERROR

APAR status

• Closed as program error.

Error description

• Using a compute node to retrieve a compiled map from an external
  source and then assigning it to LocalEnvironment.WTX.DynamicMap
  can lead to memory corruption, which may display the following
  symptoms in the service trace:
  
  ::cpiElementByteArrayValue
  file:/build/S700_P/src/DataFlowEngine/PluginInterface/ImbCpi.cpp
  line:3590 message:4150.BIPmsgs 'null data buffer pointer' ,
  'cpiElementByteArrayValue', 3
  
      UserTrace   BIP4150E: User-defined extension input parameter
  failed debug validation check.
  Input parameter 3 passed into function
  ''cpiElementByteArrayValue'' does not have a valid value.
  Correct user-defined extension implementation accordingly.
  

Local fix

• WTXCQ - WTX00037805
  PB / PB
  Circumvention: None
  

Problem summary

• Users Affected:
  WebSphere Transformation Extender customers using WebSphere
  Message Broker WTX plugin and Dynamic map override option
  
  Problem Description:
  WMB process may fail to run WTX map with the following error in
  the service trace:
  BIPmsgs 'null data buffer pointer' ,
  'cpiElementByteArrayValue', 3
  Other possible behaviors are WMB crash or hang.
  Problem is exposed when Dynamic map override is used.
  
  Platforms Affected:
  ALL
  

Problem conclusion

• Fixed code to properly initialize WTX structures when Dynamic
  map override is used.
  
  Delivered in:
  8.3.0.5
  

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

  WTX FOR INT SER

• Fixed component ID

  5724M4010

Applicable component levels

• R830 PSY

     UP

• R840 PSY

     UP