IBM Support

PH36211: CRASH WITH PLUGIN 8.5.519 ON LINUX PPC64LE

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APAR status

  • Closed as program error.

Error description

  • The problem is that the plugin enhanced its messages to take
    advantage of an OS call to get the meaning of a return code
    instead of just reporting the failure number.
    

Local fix

  • They should stop the web server, rename the existing
    mod_was_ap22_http.so, copy over new mod_was_ap22_http.so file,
    set execute permission if necessary and restart the webserver.
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  IBM WebSphere Application Server web        *
    *                  server plugin users on Linux ppc64le        *
    ****************************************************************
    * PROBLEM DESCRIPTION: Plugin may crash web server on Linux    *
    *                      PowerPC when a connection failure to    *
    *                      WAS occurs                              *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    A crash may occur when using WebSphere web server plugin on
    Linux PowerPC. The crash would occur after a connection
    failure to WebSphere Application server.
    The crash stack will show the following functions at the top
    of the stack:
    #0   __strlen_power8
    #1   vfprintf
    #2   vsnprintf
    #3   plg_vsnprintf
    #4   logLog_ex
    #5   logLog
    #6   logError
    #7   websphereGetStream
    #8   websphereExecute
    

Problem conclusion

  • The plugin code is calling an OS api to obtain message details
    for a OS specific failure code when the crash occurs. Plugin
    is uses different libraries on Linux PowerPC which returned a
    different data type in this API which caused the crash. Code
    has been corrected to use the correct data types on PowerPC.
    
    The fix for this APAR is targeted for inclusion in fix pack
    8.5.5.20 and 9.0.5.8. For more information, see
    'Recommended Updates for WebSphere Application Server':
    https://www.ibm.com/support/pages/node/715553
    

Temporary fix

Comments

APAR Information

  • APAR number

    PH36211

  • Reported component name

    WEBSPHERE APP S

  • Reported component ID

    5724J0800

  • Reported release

    850

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2021-04-12

  • Closed date

    2021-04-27

  • Last modified date

    2021-04-27

  • 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

[{"Line of Business":{"code":"LOB36","label":"IBM Automation"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"850"}]

Document Information

Modified date:
28 April 2021