[asterisk-dev] Debuging a channel driver

[luciano digivoice]

Hello,

I compiled chan_dgv separately with -g, and now I compiled with -O0 option
and my gdb is the same.

Looking gdb debug, I know that the problem is when I try to call
ast_matchmore_extension, but I need a debug more specific.

Thanks

On Mon, Jun 8, 2009 at 10:10 AM, Moises Silva <moises.silva at gmail.com>wrote:

> On Mon, Jun 8, 2009 at 7:44 AM, luciano
> digivoice<lucianodigivoice at gmail.com> wrote:
> > Hello everyone,
> >
> > I'm trying to debug my channel driver. I already enabled DEBUG_THREADS
> and
> > DONT_OPTIMIZE Asterisk parameters, I have a thread and this one is
> > genarating a core dump (I think), using gdb application I only can see
> this:
> >
> > Core was generated by `asterisk -cvvvg'.
> > Program terminated with signal 11, Segmentation fault.
> > #0  0xb7ec818a in strcmp () from /lib/libc.so.6
> > (gdb) bt
> > #0  0xb7ec818a in strcmp () from /lib/libc.so.6
> > #1  0x080d288a in pbx_find_extension (chan=0x0, bypass=0x0, q=0xad551fa8,
> > context=0x240 <Address 0x240 out of bounds>,
> >     exten=0xad5522d8 "", priority=1, label=0x0, callerid=0x8297568 "",
> > action=E_MATCHMORE) at pbx.c:979
> > #2  0x080d5209 in pbx_extension_helper (c=0x0, con=0x0, context=0x240
> > <Address 0x240 out of bounds>, exten=0xad5522d8 "", priority=1,
> >     label=0x0, callerid=0x8297568 "", action=E_MATCHMORE) at pbx.c:1820
> > #3  0x080d6803 in ast_matchmore_extension (c=0x0, context=0x240 <Address
> > 0x240 out of bounds>, exten=0xad5522d8 "", priority=1,
> >     callerid=0x8297568 "") at pbx.c:2315
> > #4  0xb5706344 in ?? () from /usr/lib/asterisk/modules/chan_dgv.so
> > #5  0x0811c655 in dummy_start (data=0x819ef40) at utils.c:856
> > #6  0xb80341b5 in start_thread () from /lib/libpthread.so.0
> > #7  0xb7f2638e in clone () from /lib/libc.so.6
> > (gdb)
> >
> > But "#4  0xb5706344 in ?? () from /usr/lib/asterisk/modules/chan_dgv.so"
> > don't help me to see the problem.
> >
> > What I need to enable or do to debug my threads.
> >
>
> Did you compile chan_dgv as part of Asterisk or separately? May be you
> are not compiling with -g -O0 ?
>
> It seems somewhere in chan_dgv ast_matchmore_extension is being called
> with an invalid address as context.
>
> --
> Moises Silva
> Software Developer
> Sangoma Technologies Inc. | 50 McIntosh Drive, Suite 120, Markham ON
> L3R 9T3 Canada
> t. 1 905 474 1990 x 128 | e. moy at sangoma.com
>
> _______________________________________________
> --Bandwidth and Colocation Provided by http://www.api-digital.com--
>
> asterisk-dev mailing list
> To UNSUBSCRIBE or update options visit:
>   http://lists.digium.com/mailman/listinfo/asterisk-dev




-- 
Luciano Alves Barroso
Equipe de Desenvolvimento DigiVoice Channel Driver & DigiVoice Meucci
www.digivoice.com.br
www.meucci.org
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.digium.com/pipermail/asterisk-dev/attachments/20090608/4ada833f/attachment.htm