Re: [s390x] lots of "User process fault: interruption code XXXX"

Control: found -1 6.10.6-1~bpo12+1
Control: clone -1 -2
Control: retitle -2 s390x fails with vm.panic_on_oom=1 & kernel.panic=10

Hi,

On 18-07-2024 08:06, Paul Gevers wrote:
> However, that doesn't seem to work on our s390x host as it seems to 
> freeze instead. Is this something known? Something I'm doing wrong (E.g. 
> these options behaving differently on s390x)? Is this a s390x kernel bug?

It seems those "User process fault" messages are a different problem as 
I have them in the current journal history. In that time I had the 
vm.panic_on_oom/kernel.panic trick turned off. Yesterday I enable the 
trick again, to see if the issue that I reported got resolved, but alas, 
the host stopped responding after a while [1].

Regarding the sysrq question, I've enabled if for the next time I play 
with the options (soon). I assume I can connect to the host with the 
x3270 terminal to try it out. What should I try when it happens again?

Paul

[1] 
https://ci.debian.net/munin/ci-worker-s390x-01/ci-worker-s390x-01/uptime.html

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