IEFUSI problems ZOS 2.3 -- CAIMB8G8 routine

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Article ID: 107927

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Products

CA CIS CA Common Services for z/OS CA 90s Services CA Database Management Solutions for DB2 for z/OS CA Common Product Services Component CA Common Services CA Datacom/AD CA ecoMeter Server Component FOC CA Easytrieve Report Generator for Common Services CA Infocai Maintenance CA IPC Unicenter CA-JCLCheck Common Component CA Mainframe VM Product Manager CA Chorus Software Manager CA On Demand Portal CA Service Desk Manager - Unified Self Service CA PAM Client for Linux for zSeries CA Mainframe Connector for Linux on System z CA Graphical Management Interface CA Web Administrator for Top Secret CA CA- Xpertware CA Compress Data Compression for MVS CA Compress Data Compression for Fujitsu

Issue/Introduction

IEFUSI MEMLIMIT and REGION problems in ZOS 2.3 Works fine in ZOS 2.1 Problem is happening with CICS regions only. All CICS regions are started with SRDR which uses SASSJBCY which is an ACF2 program and when we try to use IEBGENER we get security problems. We have a ticket open with IBM.them They determined CA's CAIMB8G8 routine was involved,  and suggested we contact you. 

Cause

IBM identified a problem with our IEFUSI exit. At exit it was causing an S0C4 abend that was affecting the 
chain of flow and affected what was passed back.

Environment

z/OS

Resolution

IBM identified a problem with our IEFUSI exit. At exit it was causing an S0C4 abend that was affecting the chain of flow and affected what was passed back. The instruction to set R15 with x'F0' was after the LM stmt that reloaded the saved registers and took away R12's addressability. The X'F0' still needed R12 so it caused S0C4 abend in our current software level. This code has worked for years and years. We flip flopped the code and so far so good. L R15,=F'0' SET RETURN CODE TO ZERO LM R14,R12,12(R13) RESTORE REGISTERS