Alan,

A PR performed on a stack entry that was created by a BAKR will not create a trace table entry.


   --Dave


----- Original Message ----- From: "Starr, Alan" <alan_st...@calpers.ca.gov>
Newsgroups: bit.listserv.ibm-main
To: <IBM-MAIN@bama.ua.edu>
Sent: Thursday, June 30, 2011 3:09 PM
Subject: Re: Diagnose S0E0 Abend


Donald,

I agree with Binyamin. I suspect that the PSW may be pointing to a PR performed by a first-level subroutine that believes it is returning to the main routine. You may be able to find the problem by inspecting the trace table . If not, a larger trace table and/or WTOs inserted before BAKRs and PRs may help.

To answer your question, the Linkage Stack Elements reside in ELSQA. You should see them in a SYSUDUMP as long as the SDATA specification (e.g. in IEADMPxx) includes LSQA.

Cheers,
Alan

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On Behalf Of Donald Likens
Sent: Thursday, June 30, 2011 12:45 PM
To: IBM-MAIN@bama.ua.edu
Subject: Diagnose S0E0 Abend

I am getting a S0E0-34 abend (sometimes). This abend indicates:

34 A Program Return (PR) instruction was issued against a linkage stack entry that has the unstack suppression bit set. The system sets this bit in a linkage stack entry to prevent SVC routines from unstacking entries they did not add to the stack.

So I freed my linkage stack some how. I do BAKR/PR in the primary and called programs so I don't know where I am messing up. So my question is how to I look at the linkage stack? At this time I only have SYSUDUMPs. If I need to I can create a SYSMDUMP.

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