[Samba] Bind9 9.18.28 crashes after loading AD DNS Zone

[Matthias Kühne | Ellerhold Aktiengesellschaft]

Hello Rowland,

thank you very much!

Ive read the mails but I didnt realize that this may be the same problem.

I can confirm that your workaround fixes the issue.

Regards, Matthias.

Am 26.07.24 um 08:48 schrieb Rowland Penny via samba:
> On Fri, 26 Jul 2024 08:38:58 +0200
> Matthias Kühne | Ellerhold Aktiengesellschaft via samba
> <samba at lists.samba.org> wrote:
>
>> Hello lovely samba-people,
>>
>> this morning all of our DCs (debian bookworm) upgraded their bind9
>> packages to 9.18.28 (from 9.18.24). Afterwards the named service
>> would not come up successfully and crash after loading the DLZ:
>>
>> Jul 26 07:32:12 rad-1.ad.ellerhold.lan named[1903]: sizing zone task
>> pool based on 64 zones
>> Jul 26 07:32:12 rad-1.ad.ellerhold.lan named[1903]: Loading 'AD DNS
>> Zone' using driver dlopen
>> Jul 26 07:32:13 rad-1.ad.ellerhold.lan named[1903]: free(): invalid
>> size Jul 26 07:32:13 rad-1.ad.ellerhold.lan systemd[1]:
>> named.service: Main process exited, code=dumped, status=6/ABRT
>> Jul 26 07:32:13 rad-1.ad.ellerhold.lan systemd[1]: named.service:
>> Failed with result 'core-dump'.
>>
>> This was rather bad, because all of our DC did update at the same
>> time and weve lost all DNS abilities... Downgrading to 9.18.24 fixes
>> the issue and named works again.
>>
>> I guess this crash happens because of the Samba DLZ? Were currently
>> at Samba version 2:4.20.2+dfsg-7~mjt-deb12 .
>>
>> Is this issue known?
> Yes
>
>> Can I somehow help to diagnose this?
> I can tell you how to fix it, never mind diagnose it ;-)
>
> See here:
>
> https://lists.samba.org/archive/samba/2024-July/249371.html
>
> Rowland
>
>
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