I don't know how many times to post that...
If your CPU is AMD ZEN2 or ZEN3... (Ryzen 3xxx and 5xxx, and probably older and newer as 2xxx and 7xxx and all their counterparts of Threadripper and Epyc Series), try first following... (just use search "ryzen crash", you find all of that). Enjoy.
https://forum.proxmox.com/threads/k...shes-about-every-day.91803/page-5#post-412174
https://forum.proxmox.com/threads/o...ox-ve-7-x-available.115090/page-3#post-507337
https://forum.proxmox.com/threads/proxmox-keeps-crashing.117837/page-2#post-511345
@staff, please, create a note in Wiki or a Sticky-Post in forum for that.
keywords:
CPUs: amd ryzen threadripper epyc cpu soft lockup crash
affected chipsets/sockets: sWRX80 trx40 AM4 x570s x570 b550 a520 x470 b450 x370 b350 a320 a300
possibly affected chipsets: AM5 x670e x670 b650e b650 (not tested yet)
FIX: disable CSTATE 6. Some vendors call it different, like "Power idle control" (set to "Typical current idle" or anything that is not "Low").
In some cases you might need to update your bios/uefi, like some gigabyte x570 boards, that are compatible with zen3/ryzen5xxx with F31 (january 2021), but the above option is available from F34 (june 2021) or something.
Use your favourite search engine, to find how to disable CSTATE 6 with your specific mainboard or bios/uefi version and which updates you need.
FYI: this is not a hardware bug, the CSTATE 6 feature is not supported by older linux kernels. PVE kernel is a custom build up to 5.19.x where it is not supported yet.
which exact linux kernel does support CSTATE 6 i don't know. also i don't know, if there is a pve edge kernel out yet, that supports that feature. i don't suggest to install pve-edge kernel anyway, if you do so, ask there for help, not here, since it is not officially supported by Proxmox.