PK09355: S0C4 ABEND IN BBOCOMM MODULE IN APPSERVER CONTROLLER CAUSED BY INVALID SESSION LENGTH

 A fix is available

Obtain the fix for this APAR



APAR status
Closed as program error.

Error description
Abend 0C4 in BBOCOMM during normal server execution due to a
zero pointer.  The traceback for the thread that 0C4ed:

SessionBucket::addToSessionCollisionQueue(Session*)
SessionManagerProtocolHTTP::processAsynchIOAccept(AsynchData
SessionManager::processAsynchIOAccept(acrwObj*)
ACR_ExecutionThread::RemoveAndProcessWork(ThreadCleanUp*)
ACR_ExecutionRoutine

The zero pointer was because part of the storage was overlaid
with 0s.  This was caused by a thread that was doing MVC (coping
session object) for a length of FFFFFFFE (-2).  The invalid
session length was caused by a bad parsing of the session
cookie.

The thread that caused an overlay has the following traceback:

HTTP_Request_Parser::processCookies(HTTP_Request_Parser::met
Server_HTTPSession::read_msg(SEQUENCE_octet**,unsigned long*
HTTP_Request::http_inbound_request(ORB_Request*,acrwObj*)
ORB_Request::comm_HTTP_inbound_request(acrwObj*)
ACR_ExecutionThread::ProcessHttpInboundRequest(acrwObj*,Thre
ACR_ExecutionRoutine

In addition, syslog was filled with many page fault entries for
the above thread:
01 01FC 009DD088 PGM 011 072C2000 9C797252 00060011 00000000
                                                    1E10A000
01 01FC 009DD088 PGM 011 072C2000 9C797252 00060011 00000000
                                                    1EF9E000
01 01FC 009DD088 PGM 011 072C2000 9C797252 00060011 00000000
                                                    1E10B000
Local fix Problem summary
****************************************************************
* USERS AFFECTED: All users of WebSphere Application Server    *
*                 V5.0 for z/OS                                *
****************************************************************
* PROBLEM DESCRIPTION: ABENDS0C4 in the Websphere Application  *
*                      Server Controller.                      *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
A parsing error with the HTTP Transport causes a storage
overlay.  The overlay cleared storage being used by other
threads in the Controller, causing various abends.
Problem conclusion
Parsing error in the HTTP Transport is corrected.

APAR PK09355 is associated with SERVICE LEVEL W502033 of
WebSphere Application Server V5.0 for z/OS.
Temporary fix Comments
APAR information
APAR number PK09355
Reported component name WEBSPHERE FOR Z
Reported component ID 5655I3500
Reported release 500
Status CLOSED PER
PE NoPE
HIPER NoHIPER
Special Attention NoSpecatt
Submitted date 2005-07-22
Closed date 2005-08-24
Last modified date 2005-09-02

APAR is sysrouted FROM one or more of the following:

APAR is sysrouted TO one or more of the following:
PK10013 PK10014

Modules/Macros
BBOUBINF          

Publications Referenced

Fix information
Fixed component name WEBSPHERE FOR Z
Fixed component ID 5655I3500

Applicable component levels
R500 PSY UK06587    UP05/08/27 P F508

  Fix is available
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Document Information


Current web document: swg1PK09355.html
Product categories: Software > Application Servers > Distributed Application & Web Servers > WebSphere Application Server for z/OS
Operating system(s):
Software version: 500
Software edition:
Reference #: PK09355
IBM Group: Software Group
Modified date: Sep 2, 2005