Re: File descriptor leak involving kqueue

[Joerg Sonnenberger <joerg%bec.de@localhost>]

On Tue, Dec 13, 2016 at 07:58:22PM +0100, Tom Ivar Helbekkmo wrote:
> Lately, I'm running my postfix with opendkim and opendmarc milters (both
> from pkgsrc).  Something about opendmarc is bleeding the system empty of
> file handles, and I'd appreciate some help thinking about how to find
> out exactly what's going on.

It seems pretty obvious that OpenDMARC is not correctly managing
ressources. It creates an on-stack res_state, initialized it with
res_ninit, but never destroys it. Arguable, res_nclose should free the
associated kqueue for the /etc/resolv.conf watcher, but the code is
certainly leaky and wrong.

Joerg