> Our servers were running Debian 10 without any issues
> We have been trying to do a fresh install of debian 11.3 on exactly the
> same hardware. The install works without any errors but on rebooting the
> system fails with kernel panics
>
> By adding init=/bin/bash from within grub works and we can then do things
> like
>
> mount - o remount /
> cd /etc/init.d
> ./networking start
> ./ssh start
> apt install stress
> stress -c 16 -m 16 --vm-bytes 50GB
>
> This stress test (without running the normal init process) runs for hours
> without issues
>
> We then tried adding systemd.confirm_spawn=true from the boot line in grub
> to try to see at what stage the kernel crashes
> Even if we don't confirm the first systemd spawn and leave the computer
> waiting for an answer for a few minutes the kernel panics
>
> Has anyone else seen this or have a fix for it?
> The board is a GIGABYTE R181-Z90-00 Version F01 , the CPU is AMD EPYC
> 7281,the total memory is 1TB from 64GB sticks of Samsung DDR4
> M386A8K40BM2-CTD
I don't have any of this hardware, and I can only speculate as to the
cause of the problem. Is it, by any chance, related to the following?
https://cloudlinux.zendesk.com/hc/en-us/articles/360014242019-AMD-CPU-Unable-to-Boot-after-CPU-Microcode-Update
Debian not booting on EPYC CPUs is an extremely serious problem.
I hope some solution is discovered.
Best regards,
Greg Marks