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

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 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

• R850 PSY

     UP

• R900 PSY

     UP