[Pkg-pdns-maintainers] Bug#825849: powerdns 100% CPU usage

[Markus Koschany]

On 06.06.2016 22:42, Christian Hofstaedtler wrote:
> * Martijn Bruinsma <m.bruinsma at sonexo.nl> [160530 20:24]:
>> Package: pdns-server
>> Version: 3.4.1-4+deb8u5
>>
>> I used apt-get to upgrade from version 3.4.1-4+deb8u4 to 3.4.1-4+deb8u5 which left me with 100% Powerdns CPU usage (before the upgrade it was in the 25-30% range) and a mostly unresponsive Powerdns server. There are no messages in the error logs.
>> Aside from the Powerdns upgrade and a bunch of upgrades for other packages, apt-get also installed an upgrade for Libbotan (from 1.10.8-2 to 1.10.8-2+deb8u1) and after some testing the combination of the Powerdns and Libbotan packages turned out to be the source of the problem: when I downgraded both packages back to 3.4.1-4+deb8u4 and 1.10.8-2 respectively, everything was fine again.
> 
> I'd appreciate it if the security team / uploaders of the new
> botan1.10 and pdns 3.4.1-4+deb8u5 packages could chime in on this.

Hello,

pdns 3.4.1-4+deb8u5 was a no-change rebuild against botan1.10
1.10.8-2+deb8u1. If there is a regression it must be in botan1.10.

I have never used pdns before. Could you share you configuration with
us? How can we reproduce this issue?

Regards,

Markus

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