PK77665: WebSphere Application Server for z/OS version 7.0 callstack storage overlay.

Fixes are available

APAR status

Closed as program error.

Error description

WebSphere Application for z/OS version 7.0 contains code
running in the Servant that cleans up after processing an ORB
request.  During this cleanup process, a portion of code
clears a structure with 0s but inappropriately overlays 52
bytes of callstack storage beyond the intended area.

Due to the nature of memory overlay problems in general,
symptoms can range in severity and effect.  Some problems of
this type show easily reproducible symptoms while others cause
seemingly random issues.  This particular problem has not been
shown to produce a specific, reproducible symptom.  When
viewing a dump of this problem, the eyecatcher "ITONSS" will
appear shortly before the overlay.

Local fix

Problem summary

****************************************************************
* USERS AFFECTED:  All users of WebSphere Application Server   *
*                  V7.0 for z/OS                               *
****************************************************************
* PROBLEM DESCRIPTION: WebSphere Application for z/OS version  *
*                      7.0 cleanup code running in the         *
*                      Servant inappropriately overlays        *
*                      callstack storage beyond the intended   *
*                      area.                                   *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
WebSphere Application for z/OS version 7.0 contains code
running in the Servant that cleans up after processing an ORB
request.  During this cleanup process, a portion of code
clears a structure with 0s but inappropriately overlays 52
bytes of callstack storage beyond the intended area.

Due to the nature of memory overlay problems in general,
symptoms can range in severity and effect.  Some problems of
this type show easily reproducible symptoms while others cause
seemingly random issues.  This particular problem has not been
shown to produce a specific, reproducible symptom.  When
viewing a dump of this problem, the eyecatcher "ITONSS" will
appear shortly before the overlay.

Problem conclusion

The cleanup code running in the Servant has been modified to
clean up only the intended memory.

APAR PK77665 is currently targeted for inclusion in
Service Level (Fix Pack) 7.0.0.5 of WebSphere
Application Server for z/OS.

Temporary fix

Comments

APAR Information

APAR number
PK77665
Reported component name
WEBSPHERE FOR Z
Reported component ID
5655I3500
Reported release
700
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2008-12-17
Closed date
2009-01-13
Last modified date
2009-08-03

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

PK90256

Fix information

Fixed component name
WEBSPHERE FOR Z
Fixed component ID
5655I3500

Applicable component levels

R700 PSY UK48200
UP09/07/27 P F907

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":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SS7K4U","label":"WebSphere Application Server for z\/OS"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"7.0","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
23 October 2021

Tips

PK77665: WebSphere Application Server for z/OS version 7.0 callstack storage overlay.

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

R700 PSY UK48200

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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