# Re: \[PATCH 1/2\] umh: Add command line to user mode helpers

- From: David Miller \<davem@davemloft.net\>
- Date: 2018-10-23 02:37:50 
- List: netdev
- Page: https://ratatoskr.run/netdev/2018/10/5414288
- Thread: https://ratatoskr.run/netdev/2018/08/11106517/t.md

```text
From: Olivier Brunel <redacted>
Date: Sat, 20 Oct 2018 19:39:56 +0200

> User mode helpers were spawned without a command line, and because
> an empty command line is used by many tools to identify processes as
> kernel threads, this could cause some issues.
> 
> Notably during killing spree on shutdown, since such helper would then
> be skipped (i.e. not killed) which would result in the process remaining
> alive, and thus preventing unmouting of the rootfs (as experienced with
> the bpfilter umh).
> 
> Fixes: 449325b52b7a ("umh: introduce fork_usermode_blob() helper")
> Signed-off-by: Olivier Brunel <redacted>

Applied.
```