When restarting my machine, the LFS system wouldn't boot properly. It turned demodé that many binaries and other files were owned by ben, the user with which I built the packages. I have no idea why that happened, but chowning them to root:root allowed my system to boot. A la https://ambientadorcochearomtico85283.tkzblog.com/35774127/fascinación-acerca-de-ambientador-coche-hecho-a-mano