Hi David,

This is strange but the issue stopped when i changed io_uring to threads.
Would that make any sense ?

We did also few other smaller things but honestly issues stopped.

Was it fixed or maybe Async IO could cause it ? (The qcow2 image is on fuse mounting).

I am not certain but if that makes any sense, should i report this to someone working on io_uring or it should have nothing to do with that bug ?

CleanShot 2026-03-05 at 09.08.15@2x.png

On all those kernels i seen no such bug for few weeks after changing async io.

tel. 790 202 300

Tytus Rogalewski

Dolina Krzemowa 6A

83-010 Jagatowo

NIP: 9570976234

czw., 5 lut 2026 o 14:20 Tytus Rogalewski <tytanick@gmail.com> napisał(a):

All my clients are renting GPUs so i can passthrough but i have no idea what they are doing there and it is not instant crash. it can work for few days under heavy load and then it happens. So even if i would di cpu only, i dont think it would give us anything.

--
tel. 790 202 300
Tytus Rogalewski
Dolina Krzemowa 6A
83-010 Jagatowo
NIP: 9570976234

czw., 5 lut 2026 o 13:57 David Hildenbrand (Arm) <david@kernel.org> napisał(a):
On 2/5/26 13:46, Tytus Rogalewski wrote:
> Hehe, i cant. I dont have any CPU only servers :)

But you can just not passthrough a GPU to the VM?
--
Cheers,

David