Proxmox 8.1 - kernel 6.5.13-3 - rcu_sched stall CPU

[jorhan]

I upgraded Proxmox from 8.0.3 to 8.1.5 and rcu occurred and can be reproduced

CPU(s) 6 x Intel(R) Pentium(R) Gold 8505 (1 Socket)
Kernel Version Linux 6.5.13-3-pve (2024-03-20T10:45Z)
Boot Mode EFI
Manager Version pve-manager/8.1.5/60e01c6ac2325b3

Utilization is
CPU < 10%
RAM < 30%

I only run a sophos xg and a lxc
Attached is the log. It would be great if it can help.

 

[gfngfn256]

P/E cores issue?
I also have a P/E CPU ( i7-13700H) and have yet to update kernel to latest 6.5.13-3. Are you now on this kernel? Maybe its related? I currently have the following output:

root@MINS-PRXMX:~# journalctl -u rcu
-- No entries --
root@MINS-PRXMX:~#

 

[gfngfn256]

I also have a P/E CPU ( i7-13700H) and have yet to update kernel to latest 6.5.13-3

Just updated - no obvious errors

Linux MINS-PRXMX 6.5.13-3-pve #1 SMP PREEMPT_DYNAMIC PMX 6.5.13-3 (2024-03-20T10:45Z) x86_64

root@MINS-PRXMX:~# journalctl -u rcu
-- No entries --
root@MINS-PRXMX:~#

 

[jorhan]

Update this case

I tried reinstalling, but still encountered the same problem.
NIC is intel I226 X4 and use brgidage function I think it may the root cause.

And I try use iKuaiOS that is a router os and also have KVM integration.
iKuaiOS kernel is 5.10.194 and I run vm(sophos xg) many days , don't have any P/E core or Network problem.

This may be related
https://forum.proxmox.com/threads/host-hard-crashes-pve-8-1-4.141464/

Hope this information helps！