[Zope-dev] Segfault in zope.configuration

[Tim Hoffman]

sorry

On Fri, Apr 2, 2010 at 9:07 PM, Marius Gedminas <marius at gedmin.as> wrote:
> A: Because it destroys the flow of the conversation
> Q: Why is it bad?
> A: No, it's bad.
> Q: Should I top post in replies to mailing lists?
>
> On Fri, Apr 02, 2010 at 12:26:59PM +0800, Tim Hoffman wrote:
>> Hi Martin
>>
>> Given that its failing on a call to libc I would do a quick run with
>> strace and ltrace.
>
> That was my segfault, not Martin's.  I suspect hardware, as it's very
> non-deterministic (a small pure-Python script that runs every 5 minutes
> segfaults once in a few months).
>
>> (In your case ltrace will be probably be more useful.)  You will be
>> able to see the calls into the libraries and you should see
>> immediately
>> if your segfault is inside expat or not.  (ltrace output will be very long ;-)
>>
>> On Fri, Apr 2, 2010 at 11:29 AM, Martin Aspeli <optilude+lists at gmail.com> wrote:
>> > Marius Gedminas wrote:
>> >> On Thu, Apr 01, 2010 at 06:07:26PM +0800, Martin Aspeli wrote:
>> >>> I'm not sure if this is a Python issue or a zope issue. We're getting a
>> >>> segfault on 64-bit SuSE Linux (SLES 11), originating from
>> >>> z3c.autoinclude, which in turn called zope.configuration's<include />
>> >>> implementation. This calls expat, which then crashes (no error, log
>> >>> message, or core file, but it has all the markings of a segfault) during
>> >>> parsing of the file.
>> >>
>> >> On recent Ubuntu versions segfaults get recorded in dmesg and end up in
>> >> /var/log/kern.log like this:
>> >>
>> >> Mar 22 02:10:03 fridge kernel: [7804719.781375] python[10447]: segfault at 7fff84a7c000 ip 00007fff83aae7cb sp 00007fff84a7bd98 error 7 in libc-2.9.so[7fff83a2b000+168000]
>> >>
>> >> I assume that's a standard kernel feature now (we've 2.6.28, x86_64).
>
> Marius Gedminas
> --
> http://pov.lt/ -- Zope 3 consulting and development
>
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