Strange SASL issue

[Aki Tuomi]

On 07.09.2017 15:26, Antoine Nguyen wrote:
> Hi all,
>
> I've just upgraded my server from debian 8 to debian 9 and I now encounter
> a strange issue. I'm using prosody (XMPP server), configured to
> authenticate against dovecot using SASL and a unix socket.
>
> This setup was working fine on debian 8.
>
> Now, each time I try to connect using my XMPP client, the authentication
> fails and I see the following error in logs:
>
> auth: Error: BUG: Authentication client said it's PID 0
>
> Have you ever heard about this?
>
> For information, dovecot version is 2.2.27.
>
> Thank you,
> Antoine Nguyen
That seems to be a bug in XMPP. It should not use PID 0.

Aki