PK93857: HTTP SERVER ABENDS WITH A PROTECTION EXCEPTION (0C4) IN THE PLUG-IN DUE TO AN OVERLAY IN HEAP STORAGE

Fixes are available

APAR status

Closed as program error.

Error description

The problem occurs when a client submits a request with a header
length of exactly 16060 bytes.
The plug-in has a buffer of exactly that size and when it tries
to get one more item into that buffer, the length goes negative
and that leads to the overlay.

Local fix

Problem summary

****************************************************************
* USERS AFFECTED:  Any user of the WebSphere Application       *
*                  Server for z/OS Plugin that runs with       *
*                  the HTTP Server for z/OS v5.3 who may       *
*                  have request headers greater than           *
*                  16,159 bytes.                               *
****************************************************************
* PROBLEM DESCRIPTION: Customer encounters an ABEND0C4 when    *
*                      a request header of 16,159+ bytes is    *
*                      passed from the HTTP Server for z/OS    *
*                      v5.3.                                   *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
A request header of 16,159+ bytes causes
a negative number to put into a counter
when that counter is used later a memory
overlay occurs which causes the ABEND0C4.

Problem conclusion

Changed the code of the WebSphere Application Server for z/OS
Plugin that runs with the HTTP Server for z/OS v5.3 so that
request headers of 16,159+ bytes are handled correctly.

APAR PK93857 is currently targeted for inclusion in Service
Level (Fix Pack) 6.0.2.39 of WebSphere Application Server
V6.0.1.

Please refer to URL:
//www.ibm.com/support/docview.wss?rs=404&uid=swg27006970
for Fix Pack availability

Temporary fix

Comments

APAR Information

APAR number
PK93857
Reported component name
WEBSPHERE FOR Z
Reported component ID
5655I3500
Reported release
601
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2009-08-13
Closed date
2009-09-30
Last modified date
2010-02-19

APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:

PM04094 PM08129

Fix information

Fixed component name
WEBSPHERE FOR Z
Fixed component ID
5655I3500

Applicable component levels

R601 PSY UK52467
UP09/12/12 P F912

Fix is available

Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.

[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SS7K4U","label":"WebSphere Application Server for z\/OS"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"6.0.1","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
29 December 2021

Tips

PK93857: HTTP SERVER ABENDS WITH A PROTECTION EXCEPTION (0C4) IN THE PLUG-IN DUE TO AN OVERLAY IN HEAP STORAGE

Fixes are available

Subscribe

APAR status

Closed as program error.

Error description

Local fix

Problem summary

Problem conclusion

Temporary fix

Comments

APAR Information

APAR number

Reported component name

Reported component ID

Reported release

Status

PE

HIPER

Special Attention

Submitted date

Closed date

Last modified date

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

Fixed component ID

Applicable component levels

R601 PSY UK52467

Fix is available

Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.

Document Information

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