Ubuntu 22.04 netboot install uses selinux enabled kernel

[Heiko Robert]

I installed Ubuntu 22.04 on a odroid M-1 using netboot_default

uname -a
Linux test 5.18.0-odroid-arm64 #1 SMP PREEMPT Ubuntu 5.18.0-202205181718~jammy (2022-05-18) aarch64 aarch64 aarch64 GNU/Linux

When trying to run lxc I get selinux warnings.

lxc list
2022/11/02 16:16:51.131884 cmd_run.go:1046: WARNING: cannot create user data directory: failed to verify SELinux context of /root/snap: exec: "matchpathcon": executable file not found in $PATH

It looks like the kernel has been compiled with selinux although Ubuntu uses appamor. snapd uses selinux if available but selinux is not configured.

work around:
install selinux-policy-default and manually disable selinux

some background:
https://bugs.launchpad.net/ubuntu/+source/snapd/+bug/1826460
https://forum.snapcraft.io/t/selinux-warning-when-running-lxc/

[pcgeek86 (pcgeek86)]

How do you install Ubuntu 22.04 LTS directly onto the ODROID M1? I tried, and failed. To work around the issue, I had to use the older 20.04 LTS image, from HardKernel, and perform an OS upgrade to 22.04 LTS. It worked fine, but I would rather directly install the latest LTS version fresh onto the eMMC chip.