PM64428: EXECUTION ENVIRONMENT ABEND IF XPATH STATEMENT IS INCORRECTLY FORMED

APAR status

• Closed as program error.

Error description

• A map that uses a badly formed XPATH() function can core dump
  the execution environment, such as the Command Server or
  WebSphere Message Broker.
  

Local fix

• WTXCQ - WTX00039853
  PB / PB
  Circumvention: Ensure that no badly formed XPATH statements are
  used.
  

Problem summary

• Users Affected:
  WebSphere Transformation Extender customers using custom XML
  functions from xmllib on Solaris
  
  Problem Description:
  XPATH or XPATHEX WTX function on Solaris crashes when processing
  XPATH statements that have invalid parameters. Example stack
  trace is:
  
   ---- called from signal handler with signal 6 (SIGABRT) ------
    [9] __lwp_kill
    [10] raise
    [11] abort
    [12] __Cimpl::default_terminate
    [13] __Cimpl::ex_terminate
    ---- hidden frames, use 'where -h' to see them all ----
    [16] xslt4c_1_11::XPathProcessorImpl::error
    [17] xslt4c_1_11::XPathProcessorImpl::error
    [18] xslt4c_1_11::XPathProcessorImpl::RelativeLocationPath
    [19] xslt4c_1_11::XPathProcessorImpl::LocationPath
    [20] xslt4c_1_11::XPathProcessorImpl::FilterExpr
    [21] xslt4c_1_11::XPathProcessorImpl::PathExpr
    [22] xslt4c_1_11::XPathProcessorImpl::UnionExpr
    [23] xslt4c_1_11::XPathProcessorImpl::MultiplicativeExpr
    [24] xslt4c_1_11::XPathProcessorImpl::AdditiveExpr
    [25] xslt4c_1_11::XPathProcessorImpl::RelationalExpr
    [26] xslt4c_1_11::XPathProcessorImpl::EqualityExpr
    [27] xslt4c_1_11::XPathProcessorImpl::AndExpr
    [28] xslt4c_1_11::XPathProcessorImpl::OrExpr
    [29] xslt4c_1_11::XPathProcessorImpl::initXPath
    [30] xslt4c_1_11::XPathEvaluator::evaluate
    [31] xslt4c_1_11::XPathEvaluator::evaluate
    [32] XPATHEX
    [33] MercExitProcEx
    [34] MercExitProc
    [35] CallExternalFuncProc
    [36] FindOperand
    [37] ExecuteMapRule
  
  
  Platforms Affected:
  Solaris
  

Problem conclusion

• XLST library throws an exception that was not caught in WTX
  XPATH function. WTX libxmllib.so was incorrectly linked with c++
  runtime causing problem with exception handling.
  
  Delivered in:
  8.3.0.5, 8.4.0.3
  

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

  WEBSPHERE DESIG

• Fixed component ID

  5724M4008

Applicable component levels

• R820 PSY

     UP

• R830 PSY

     UP

• R840 PSY

     UP