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PI71359: FFDC is produced for a NullPointerException in com.ibm.ws.tcpchannel.internal.SocketRWChannelSelector.updateSelector

Fixes are available

16.0.0.4: WebSphere Application Server Liberty 16.0.0.4
17.0.0.1: WebSphere Application Server Liberty 17.0.0.1
17.0.0.2: WebSphere Application Server Liberty 17.0.0.2
17.0.0.3: WebSphere Application Server Liberty 17.0.0.3
17.0.0.4: WebSphere Application Server Liberty 17.0.0.4
18.0.0.1: WebSphere Application Server Liberty 18.0.0.1
18.0.0.2: WebSphere Application Server Liberty 18.0.0.2
18.0.0.3: WebSphere Application Server Liberty 18.0.0.3
18.0.0.4: WebSphere Application Server Liberty 18.0.0.4
19.0.0.1: WebSphere Application Server Liberty 19.0.0.1
19.0.0.2: WebSphere Application Server Liberty 19.0.0.2
19.0.0.3: WebSphere Application Server Liberty 19.0.0.3
19.0.0.4: WebSphere Application Server Liberty 19.0.0.4
19.0.0.5: WebSphere Application Server Liberty 19.0.0.5
19.0.0.6: WebSphere Application Server Liberty 19.0.0.6
19.0.0.7: WebSphere Application Server Liberty 19.0.0.7
19.0.0.8: WebSphere Application Server Liberty 19.0.0.8
19.0.0.9: WebSphere Application Server Liberty 19.0.0.9
19.0.0.10: WebSphere Application Server Liberty 19.0.0.10
19.0.0.11: WebSphere Application Server Liberty 19.0.0.11
19.0.0.12: WebSphere Application Server Liberty 19.0.0.12
20.0.0.1: WebSphere Application Server Liberty 20.0.0.1
20.0.0.2: WebSphere Application Server Liberty 20.0.0.2
20.0.0.3: WebSphere Application Server Liberty 20.0.0.3
20.0.0.4: WebSphere Application Server Liberty 20.0.0.4
20.0.0.5: WebSphere Application Server Liberty 20.0.0.5
20.0.0.6: WebSphere Application Server Liberty 20.0.0.6
20.0.0.7: WebSphere Application Server Liberty 20.0.0.7
20.0.0.8: WebSphere Application Server Liberty 20.0.0.8
20.0.0.9: WebSphere Application Server Liberty 20.0.0.9
20.0.0.10: WebSphere Application Server Liberty 20.0.0.10
20.0.0.11: WebSphere Application Server Liberty 20.0.0.11
20.0.0.12: WebSphere Application Server Liberty 20.0.0.12
21.0.0.3: WebSphere Application Server Liberty 21.0.0.3
21.0.0.4: WebSphere Application Server Liberty 21.0.0.4
21.0.0.5: WebSphere Application Server Liberty 21.0.0.5
21.0.0.6: WebSphere Application Server Liberty 21.0.0.6
21.0.0.7: WebSphere Application Server Liberty 21.0.0.7
21.0.0.8: WebSphere Application Server Liberty 21.0.0.8
21.0.0.9: WebSphere Application Server Liberty 21.0.0.9
21.0.0.1: WebSphere Application Server Liberty 21.0.0.1
21.0.0.2: WebSphere Application Server Liberty 21.0.0.2
21.0.0.10: WebSphere Application Server Liberty 21.0.0.10
21.0.0.11: WebSphere Application Server Liberty 21.0.0.11
21.0.0.12: WebSphere Application Server Liberty 21.0.0.12
22.0.0.1: WebSphere Application Server Liberty 22.0.0.1
22.0.0.2: WebSphere Application Server Liberty 22.0.0.2
22.0.0.3: WebSphere Application Server Liberty 22.0.0.3
22.0.0.4: WebSphere Application Server Liberty 22.0.0.4

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APAR status

  • Closed as program error.

Error description

  • An FFDC is produced very infrequently showing the following:
    
    Exception = java.lang.NullPointerException
    Source =
    com.ibm.ws.tcpchannel.internal.SocketRWChannelSelector
    probeid = 254
    Stack Dump = java.lang.NullPointerException
    	at
    com.ibm.ws.tcpchannel.internal.SocketRWChannelSelector.updat
    eSelector(SocketRWChannelSelector.java:195)
    	at
    com.ibm.ws.tcpchannel.internal.ChannelSelector.run(ChannelSe
    lector.java:229)
    	at java.lang.Thread.run(Thread.java:798)
    
    This error has no adverse consequences. The FFDC only
    appears when debug traces are enabled for the file or
    component in question.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of IBM WebSphere Application      *
    *                  Server Liberty - Channel Framework          *
    ****************************************************************
    * PROBLEM DESCRIPTION: FFDC is produced for a                  *
    *                      java.lang.NullPointerException in       *
    *                      com.ibm.ws.tcpchannel.internal.SocketRW *
    *                      ChannelSelector.updateSelector()        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    An FFDC is produced infrequently showing the following:
    
    Exception = java.lang.NullPointerException
    Source = com.ibm.ws.tcpchannel.internal.SocketRWChannelSelector
    probeid = 254
    Stack Dump = java.lang.NullPointerException
    	at
    com.ibm.ws.tcpchannel.internal.SocketRWChannelSelector.updateSel
    ector(SocketRWChannelSelector.java:195)
    	at
    com.ibm.ws.tcpchannel.internal.ChannelSelector.run(ChannelSelect
    or.java:229)
    	at java.lang.Thread.run(Thread.java:798)
    
    This error has no adverse consequences. The error and FFDC only
    appear when debug traces are enabled for
    the file in question.
    

Problem conclusion

Temporary fix

Comments

APAR Information

  • APAR number

    PI71359

  • Reported component name

    WAS LIBERTY COR

  • Reported component ID

    5725L2900

  • Reported release

    855

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2016-10-26

  • Closed date

    2016-11-03

  • Last modified date

    2016-11-03

  • 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

    WAS LIBERTY COR

  • Fixed component ID

    5725L2900

Applicable component levels

  • R855 PSY

       UP

[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSD28V","label":"WebSphere Application Server Liberty Core"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"855","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
03 May 2022