In containers securityfs is typically not mounted. Our lsm-bpf code so far detected this situation and claimed the kernel was lacking lsm-bpf support. Which isn't quite true though, it might very well support it. This made boots of systemd in systemd-nspawn a bit ugly, because of the misleading log message at boot. Let's improve things, and make clearer what is going on.
System and Service Manager
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