IT23765: ABEND AFTER XMLNSC VALIDATION EXCEPTIONS

APAR status

• Closed as program error.

Error description

• If a message flow uses the Validation Node to perform content
  and value validation on a message in the SOAP or XMLNSC domains
  with the Failure Action node property set to 'Exception', the
  integration server may randomly abend. The abend call stacks
  are inconsistent, but the following stack might be seen if the
  abend occurred when stopping the message flow:
  
  cfree from /lib64/libc.so.6
  ImbXMLNSCServices::ImbXMLNSCServices()
  ImbXMLNSCServices::ImbXMLNSCServices()
  ImbXMLNSCDocHandler::deleteXLXPParser()
  ImbXMLNSCDocHandler::ImbXMLNSCDocHandler()
  ImbXMLNSCNullDocHandler::ImbXMLNSCNullDocHandler()
  ImbXMLNSCParser::ImbXMLNSCParser()
  ImbXMLNSCParser::ImbXMLNSCParser()
  ImbParserManager::deleteParser(ImbParser*)
  ImbMessageGroup::ImbMessageGroup()
  
  Additional Symptom(s) Search Keyword(s):
  

Local fix

• 1) Use a Failure action of 'ExceptionList' instead of 'Exception
  or
  2) Export environment variable MQSI_FREE_MASTER_PARSERS=YES
  

Problem summary

• ****************************************************************
  USERS AFFECTED:
  All users of IBM Integration Bus v10 and IBM App Connect
  Enterprise v11 using the XMLNSC parser with validation.
  
  
  Platforms affected:
  z/OS, MultiPlatform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  If a message flow uses the Validation Node to perform content
  and value validation on a message in the SOAP or XMLNSC domains
  with the Failure Action node property set to 'Exception', the
  integration server might randomly abend.
  The abend call stacks are inconsistent, but the following stack
  might be seen if the abend occurs when stopping the message
  flow:
  
  cfree from /lib64/libc.so.6
  ImbXMLNSCServices::ImbXMLNSCServices()
  ImbXMLNSCServices::ImbXMLNSCServices()
  ImbXMLNSCDocHandler::deleteXLXPParser()
  ImbXMLNSCDocHandler::ImbXMLNSCDocHandler()
  ImbXMLNSCNullDocHandler::ImbXMLNSCNullDocHandler()
  ImbXMLNSCParser::ImbXMLNSCParser()
  ImbXMLNSCParser::ImbXMLNSCParser()
  ImbParserManager::deleteParser(ImbParser*)
  ImbMessageGroup::ImbMessageGroup()
  
  An index value into an array of nested elements is not being
  reset following a validation failure that causes the parse to
  stop. After a number of validation failures the index value
  exceeds the array size leading to heap corruption.
  If the Failure Action node property is set to 'ExceptionList
  instead of ''Exception' the parse continues to validate the
  complete document even if validation problems are found. When
  the document has been fully parsed, the nested element index
  pointer will have returned to zero.
  

Problem conclusion

• The product now resets the element stack array index to 0 (top
  of stack) when reset() is called on the XLXPC parser, preventing
  the abend.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v10.0      10.0.0.15
  v11.0      11.0.0.3
  
  The latest available maintenance can be obtained from:
  http://www-01.ibm.com/support/docview.wss?rs=849&uid=swg27006041
  
  If the maintenance level is not yet available,information on
  its planned availability can be found on:
  http://www-1.ibm.com/support/docview.wss?rs=849&uid=swg27006308
  ---------------------------------------------------------------
  

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

  INTEGRATION BUS

• Fixed component ID

  5724J0540

Applicable component levels