Comment # 23 on bug 1229028 from Antonio Feijoo

(In reply to Dr. Werner Fink from comment #20)
> > > Aug 30 09:53:39 asus kernel: Core dump to |/bin/false pipe failed
>                                                ^^^^^^^^^^
> /bin/false ... somehow strange

By default systemd-coredump is not included in the initrd, requested in comment
#11

> > > Aug 30 09:53:39 asus systemd[1]: Child 2027 (sshd) died (code=exited, status=255/EXCEPTION)
> > > Aug 30 09:53:39 asus systemd[1]: sshd.service: Child 2027 belongs to sshd.service.
> 
> May I asked which shell is configured in initrd for conenctions via sshd?

I should be bash, at least that is the default:

initramfs-ssh:/root# ls -l /usr/bin/sh
lrwxrwxrwx 1 root root 4 Aug 21 09:19 /usr/bin/sh -> bash

> And for which user (guess the only available user root)?

Yes, only root.

> Maybe adding an /root/.ssh/authorized_keys file in the initrd could help sshd in the initrd

I never tried this module without an authorized_keys file and I don't think
that it works without that (at least it's logged a fatal error if it's not
present when the initrd is built).