Hannes: your warn on hits ;-)
raspi4c:/usr/src/linux-5.18.0-2.g2023975 # diff block/blk-mq.c.orig
block/blk-mq.c
2772c2772
<
---
> WARN_ON(READ_ONCE(rq->state) == MQ_RQ_IDLE);
it's line 2272
raspi4c:/var/crash/2022-05-25-07:59 # grep -c block/blk-mq.c:2772 dmesg.txt
69
so it triggered 69 times before finally crashing.
I don't think I can switch easily to another qemu invocation, as the worker
fetches the build script from the OBS server and the OBS server (PMBS) is not
under my control.
Shall I try with the patch from linux-next applied?