Hi
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


For now we have reinstalled Debian 10 - that is running without any issues
-  but we need to install Debian 11 to avoid having to recompile lots of
libraries


thanks for any help

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