Bug#815974: Segmentation fault in libresolv triggered by php5-fpm
Am Samstag, den 27.02.2016, 23:59 +0100 schrieb Aurelien Jarno:
> On 2016-02-26 22:03, Fabian Niepelt wrote:
> >
> > >
> > > IMHO making sure that programs are restarted after applying the
> > > security
> > > update should be enough, but I am not fully sure about my
> > > analysis, so a
> > > confirmation would be nice to have.
> > The machines in question have been rebooted a few times after
> > upgrading.
> Ok then my scenario might be wrong.
>
> >
> > I will try to get a full backtrace next week. Sadly, I won't have
> > access to the systems over the weekend.
> Ok, no problem.
>
> >
> > >
> > > It wonder if it could be that the process is started with the
> > > old libc and is later dlopening the new nss libraries.
> > Going to investigate if there are old libs lying around somewhere
> > in the system on monday.
> I am able to trigger similar (but slightly different) segmentation
> fault
> by doing name resolving with the new libc (ie 2.13-38+deb7u10) but
> with
> the old /lib/x86_64-linux-gnu/libnss_dns.so.2 (ie from 2.13-
> 38+deb7u9).
> Do you have any nss modules which do not come from the libc6 package
> installed (either from another package or manually installed)?
>
Yep, this was it. Searching for the lib yielded an old version of it
that is not managed by package management...
Thank you for giving me the hint.
> Thanks for your help in debugging.
Thank you all for your time and sorry for the noise!
Greetings
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