Bug#1076309: [s390x] lots of "User process fault: interruption code XXXX"

On Thu, Jul 18, 2024 at 08:06:46AM +0200, 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?

This now points to a kernel bug.  Which requires a new kernel first for
further debugging.

What does "freeze" mean"?  Also no sysrq?

See https://www.kernel.org/doc/html/v5.3/s390/debugging390.html#sysrq,
but you need to enable that before.

Bastian