# Re: bpfilter causes a leftover kernel process

- From: Olivier Brunel \<hidden\>
- Date: 2018-08-27 20:18:02 
- List: netdev
- Page: https://ratatoskr.run/netdev/2018/08/11106558
- Thread: https://ratatoskr.run/netdev/2018/08/11106517/t.md

```text

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,
```