IBM Support

PH33264: When using Intelligent manager and WebSphere plugin, the web server may crash when processing a non-WebSphere request.

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APAR status

  • Closed as program error.

Error description

  • The plugin log (at DEBUG level or more verbose) will show
    entries prior to the crash:
    DEBUG: ws_common: websphereShouldHandleRequest: ODR will not
    handle request <uri of request>
    DEBUG: mod_was_ap24_http: in as_logger
    
    The crash stack will vary because plugin is referencing memory
    after is has been freed. The crash can occur in a variety of
    locations.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  IBM WebSphere Application Server plugin     *
    *                  users with Intelligent Management enabled   *
    ****************************************************************
    * PROBLEM DESCRIPTION: The web server may crash when handling  *
    *                      a non WebSphere request when the        *
    *                      WebSphere plugin is using Intelligent   *
    *                      Management.                             *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    When the WebSphere plugin has processed a request which will
    not be forwarded to WebSphere, it releases the memory it has
    associated with the request but did not clear the storage
    location. The module references the memory location after it
    has been freed which causes the web server to crash.
    

Problem conclusion

  • The plugin module has been corrected to clear the reference to
    the memory after releasing to prevent the crash.
    
    The fix for this APAR is targeted for inclusion in fix pack
    9.0.5.8 & 8.5.5.20. 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

    PH33264

  • Reported component name

    WEBS APP SERV N

  • Reported component ID

    5724H8800

  • Reported release

    900

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2021-01-12

  • Closed date

    2021-03-10

  • Last modified date

    2021-03-10

  • 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

    WEBS APP SERV N

  • Fixed component ID

    5724H8800

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":"900"}]

Document Information

Modified date:
11 March 2021