[asterisk-dev] Coredump upon receipt of RTP with 183 sessionprogress on

[Power, Paul C.]

Some thing i forgot to mention the first time:
when progressinband=never or no, the call out to the PSTN works like a
charm.


________________________________

	From: asterisk-dev-bounces at lists.digium.com
[mailto:asterisk-dev-bounces at lists.digium.com] On Behalf Of Power, Paul
C.
	Sent: Wednesday, September 19, 2007 4:37 PM
	To: asterisk-dev at lists.digium.com
	Subject: [asterisk-dev] Coredump upon receipt of RTP with 183
sessionprogress on
	
	
	Hello every body. 
	 
	I originally ran into the problem on * 1.4.10, but am able to
replicate quite nicly on 1.4.11.
	 
	I have asterisk installed on gentoo. Using a Polycom 601 phone,
codec g729. trying to dial out to the PSTN via an openSER proxy with an
Audiocodes gateway.
	 
	progressinband is set to yes.
	 
	When i dial out to the PSTN asterisk dies upon the receipt of
the first RTP packet from the phone. i have traced the problem to the
ast_rtp_read call in rtp.c.  i have looked into things to the point that
i know when an RTP packet comes from the phone and rtp->f.samples (line
1300) value is set to 160 (in my case), the function call does not
return to the place it came from (asterisk crashes).  i have
experimented a bit by manulally setting rtp->f.samples to various
values.
	 
	when set to 0 asterisk does not die, it contiues to run.
	when set to 1 asterisk dies after receiving a few dozen RTP
packets.
	when set to 31 asterisk dies after receiving 3-4 RTP packets.
	so, the higher the samples value the quicker the death.
	 
	(gdb) bt
	#0  0x08267e69 in autocorr (r=0x869e6c4, x=0xc, N=-1228178720,
order=222647369) at helpfun.c:38
	#1  0xb6f656fb in coder_ld8a () from
/usr/lib/asterisk/modules/codec_g729a.so
	#2  0xb6f6562f in g729_coder () from
/usr/lib/asterisk/modules/codec_g729a.so
	#3  0xb6eeb4de in ?? () from
/usr/lib/asterisk/modules/codec_g729a.so
	#4  0x0869e6c4 in ?? ()
	#5  0x086a0688 in ?? ()
	#6  0x086a4548 in ?? ()
	#7  0xb6cb7dd8 in ?? ()
	#8  0xb78e2ff4 in ?? () from /lib/libc.so.6
	#9  0x00000000 in ?? ()
	 
	I am pretty much at a loss as to where to look or what to do to
resolve this issue.
	Any suggestions would be welcomed.  If there is any additional
information that people would like to see, i will try to provide.
	 
	-PCPIII
	 
	 
	 

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