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Date: Mon, 7 Feb 2005 11:20:49 -0800
From: Kris Kennaway <kris@obsecurity.org>
To: Payment Online <snacktime2@gmail.com>
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References: <21fe04a805020711141369e96d@mail.gmail.com>
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cc: FreeBSD Questions <freebsd-questions@freebsd.org>
Subject: Re: Python with threading core dumps on 5.3
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On Mon, Feb 07, 2005 at 11:14:36AM -0800, Payment Online wrote:
> I am consistantly getting seg faults and bus errors when running a
> multi threaded python application under 5.3-release-p2.  Python was
> built from the port(python 2.4) with threading enabled.  Rebuilding
> with the huge stack size option enabled didn't make a difference.  The
> application uses twisted (www.twistedmatrix.com) and it runs fine
> until I put it under a bit of a load and have 20-30 simultaneous
> threads running.  Then it core dumps.  Following is the backtrace from
> the core file.  The backtrace is always the same.  Are threads just
> generally problematic on Freebsd?

You'll need to recompile with debugging symbols in order to get a
useful trace.  The python maintainer might be able to talk you through
this.

Kris

> #0  0x2823cdbb in pthread_testcancel () from /usr/lib/libpthread.so.1
> #1  0x28234b06 in pthread_mutexattr_init () from /usr/lib/libpthread.so.1
> #2  0x00000000 in ?? ()

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