Bug#1107395: OpenLDAP: slapd 2.5.13+dfsg-5 service frequently stops during everyday use

[Chandler]

On Sat, 7 Jun 2025 08:57:24 -0700 Ryan Tandy <ryan at nardis.ca> wrote:
> I guess you were running bullseye-backports previously and have now
> upgraded to bookworm, is that correct?

Yes sir!

> Between 2.5.13+dfsg-2 and -5 there are no code changes except for one
> fix to the sha2 password module.

> >otherwise all kinds of weird things start happening in our networks
> >without ldap working.
> That sounds like an understatement.

How unlike me, I apologize!

> >There's nothing out of the ordinary shown in the syslog or journal or
> >slapd.log (which is what "-l local0" is used for).
> Could you please share some of these logs?

Only if you insist.

> >Other than that, what more can be checked? 
> Good question. I think the important thing is to determine whether the
> events are initiated by slapd itself, or by something external telling
> systemd to stop it. I'm not a systemd expert and don't know the best way
> to figure that out, but I'd be looking at the journal, comparing logs
> with one of your events vs an explicit 'systemctl stop',

I'm no expert either but I did check all that beforehand and didn't
notice *a thing*.  My next best guess at that point was some sort of
malicious query that silently shut down the server, since I often saw
the same user making the last queries before the service stopped.  After
a while, that randomized though, so my conspiracy theory was in shambles.

Sooo, I downgraded back to version 2.5.13+dfsg-2~bpo11+1 shortly after
your message and, wouldn't you know, it's been steadily running since
then, over 6 days now and a new record...


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