From mboxrd@z Thu Jan  1 00:00:00 1970
From: Olivier Brunel <jjk@jjacky.com>
Subject: Re: bpfilter causes a leftover kernel process
Date: Mon, 27 Aug 2018 18:31:22 +0200
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Small addentum: Of course I failed to realize this bpfilter helper is
also mentioned in the kernel log:

kern.info: [    8.997711] bpfilter: Loaded bpfilter_umh pid 920


It also seems to be absolutely required when CONFIG_BPFILTER is
enabled, that is I tried blacklisting the module bpfilter, but then
other things (e.g. iptables-restore) just fail to work.

So the process is required, never ends and prevents umouting the
rootfs on shutdown. Unless I'm missing something, there's definitely a
bug there?

Thanks,