How to allow mlock(2) in jail?

Ernie Luzar luzar722 at
Tue Jan 10 00:48:46 UTC 2017

Pavel Timofeev wrote:
> Hello!
> I'm trying to deploy security/vault in freebsd jail.
> Usually this tool locks some memory for security reason.
> I can run vault on my bare system without any problems. But in jail it
> complains mlock(2) is not available.
> So my question is how to allow mlock(2) in jail?
> P. S. I know, I can disable mlock(2) use in vault config as workaround.

A jail has no kernel so no memory to lock.

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