IBM Support

PM34665: JSF OUTPUT TEXT THAT CALLS CREATVALUEEXPRESSION EVENTUALLY GOES TO INFINITE LOOP

Fixes are available

7.0.0.19: WebSphere Application Server V7.0 Fix Pack 19
7.0.0.21: WebSphere Application Server V7.0 Fix Pack 21
7.0.0.23: WebSphere Application Server V7.0 Fix Pack 23
7.0.0.25: WebSphere Application Server V7.0 Fix Pack 25
7.0.0.27: WebSphere Application Server V7.0 Fix Pack 27
7.0.0.29: WebSphere Application Server V7.0 Fix Pack 29
7.0.0.31: WebSphere Application Server V7.0 Fix Pack 31
7.0.0.27: Java SDK 1.6 SR13 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.33: WebSphere Application Server V7.0 Fix Pack 33
7.0.0.35: WebSphere Application Server V7.0 Fix Pack 35
7.0.0.37: WebSphere Application Server V7.0 Fix Pack 37
7.0.0.39: WebSphere Application Server V7.0 Fix Pack 39
7.0.0.41: WebSphere Application Server V7.0 Fix Pack 41
7.0.0.43: WebSphere Application Server V7.0 Fix Pack 43
7.0.0.45: WebSphere Application Server V7.0 Fix Pack 45
7.0.0.19: Java SDK 1.6 SR9 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.21: Java SDK 1.6 SR9 FP2 Cumulative Fix for WebSphere
7.0.0.23: Java SDK 1.6 SR10 FP1 Cumulative Fix for WebSphere
7.0.0.25: Java SDK 1.6 SR11 Cumulative Fix for WebSphere Application Server
7.0.0.27: Java SDK 1.6 SR12 Cumulative Fix for WebSphere Application Server
7.0.0.29: Java SDK 1.6 SR13 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.45: Java SDK 1.6 SR16 FP60 Cumulative Fix for WebSphere Application Server
7.0.0.31: Java SDK 1.6 SR15 Cumulative Fix for WebSphere Application Server
7.0.0.35: Java SDK 1.6 SR16 FP1 Cumulative Fix for WebSphere Application Server
7.0.0.37: Java SDK 1.6 SR16 FP3 Cumulative Fix for WebSphere Application Server
7.0.0.39: Java SDK 1.6 SR16 FP7 Cumulative Fix for WebSphere Application Server
7.0.0.41: Java SDK 1.6 SR16 FP20 Cumulative Fix for WebSphere Application Server
7.0.0.43: Java SDK 1.6 SR16 FP41 Cumulative Fix for WebSphere Application Server

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APAR status

  • Closed as program error.

Error description

  • JavaServer Faces (JSF) output text that calls
    createValueExpression eventually goes into an infinite loop.
    

Local fix

  • a
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  IBM WebSphere Application Server            *
    *                  Version 7.0 users of the Unified            *
    *                  Expression Language (EL).                   *
    ****************************************************************
    * PROBLEM DESCRIPTION: An infinite loop can occur when         *
    *                      applications that use the EL are        *
    *                      under load.                             *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    Under certain timing conditions, a WeakHashMap instance in the
    ConcurrentCache class can be accessed concurrently.  This can
    result in an infinite loop.
    Below is an example of the call stack during the infinite loop:
    
    at java.util.WeakHashMap.get(WeakHashMap.java:355)
    at
    org.apache.el.util.ConcurrentCache.get(ConcurrentCache.java:24)
    at
    org.apache.el.lang.ExpressionBuilder.createNodeInternal(Expressi
    onBuilder.java:95)
    at
    org.apache.el.lang.ExpressionBuilder.build(ExpressionBuilder.jav
    a:151)
    at
    org.apache.el.lang.ExpressionBuilder.createValueExpression(Expre
    ssionBuilder.java:195)
    at
    org.apache.el.ExpressionFactoryImpl.createValueExpression(Expres
    sionFactoryImpl.java:68)
    at
    com.ibm._jsp._example._jspx_meth_h_inputText_0(_example.java:200
    )
    

Problem conclusion

Temporary fix

Comments

APAR Information

  • APAR number

    PM34665

  • Reported component name

    WEBSPHERE PORTA

  • Reported component ID

    5724E7600

  • Reported release

    700

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2011-03-11

  • Closed date

    2011-05-12

  • Last modified date

    2011-05-12

  • 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 APP S

  • Fixed component ID

    5724J0800

Applicable component levels

  • R700 PSY

       UP



Document information

More support for: WebSphere Application Server
General

Software version: 7.0

Reference #: PM34665

Modified date: 12 May 2011