On 2020-05-25 17:04, Ed Jaffe wrote:
For the record, we diagnose issues using the events you've listed all the time, no matter what the AMODE. In fact, we even have RMODE(64) code nowadays.

There is a bug with 64-bit PTRACE formatting and we got a custom fix from Jim Mulder for that (it will be GA with z/OS 2.5), but otherwise everything we need is there.

What sort of information were you expecting that you did not see?

I probably painted with too broad a brush in my initial post, and for that I apologize. The real offender is the PGM trace entry captured by PI=56 in the GTF trace specification:

PGM..... 056      ASCB.... 00FBF880 CPU..... 0000     JOBN.... XXXXXXXX
OLD-PSW. 47543001 80000038 00000000 0149ADEE TCB..... 008CBA08 VPH..... 7FFFF000 VPA..... 7FFFF800 MODN.... SVC-RES R0...... 84C85DFA R1...... 00FFF5FF R2...... 7F6ADD38 R3...... 7F6ADE34 R4...... 80000050 R5...... 7F6ADCE5 R6...... 008C46D0 R7...... 008C46FC R8...... 00000050 R9...... 84C85936 R10..... 01D9AE20 R11..... 008C4C68 R12..... 84C85936 R13..... 008C4010 R14..... 00000000 R15..... 7FFFF000
         GMT-05/22/2020 14:40:47.514205  LOC-05/22/2020 10:40:47.514205

Despite being in AMODE 64, it only presents 32-bit registers. From another source that I am prohibited by NDA from revealing, I know that the entire contents of R15 were 7FFFF000_7FFFF000; I know that if the problem was repeatable I could use SLIP (which does show register high halves) to trace in the vicinity of the program check. But this would have been immediately obvious if the GTF trace entry showed 64-bit registers.

--

Regards, Gord Tomlin
Action Software International
(a division of Mazda Computer Corporation)
Tel: (905) 470-7113, Fax: (905) 470-6507
Support: https://actionsoftware.com/support/

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