Bug#607876: asterisk: segfault with IAX2-IAX2-DAHDI and use of jitterbuffer
Andreas Bauer
ab at voltage.de
Thu Dec 23 13:02:46 UTC 2010
Subject: asterisk: segfault with IAX2-IAX2-DAHDI and use of jitterbuffer
Package: asterisk
Version: 1:1.6.2.9-2
Severity: important
Tags: upstream
*** Please type your report below this line ***
A softphone (Zoiper Linux) connects to this asterisk box via IAX2
The call is forwarded via Dial() to another asterisk box via IAX2
A jitterbuffer with the following setup is used on the inbound (softphone) channel
jitterbuffer=yes
forcejitterbuffer=yes
maxjitterbuffer=1500
maxjitterinterps=10
resyncthreshold=1000
jittertargetextra=1500
The remote asterisk box does further route the call via DAHDI to the POTS
(seems not relevant, bug happens also when echoTest() is used remote)
With this setup Asterisk will produce a repeatable crash after 1-2s
of audio, sometimes 3-6s, probably depending on actual jitter at the time.
Changing "forcejitterbuffer" to "no" will eliminate the problem, but also no
jitterbuffering will take place.
The inbound connection is via high latency, high jitter, low bandwith
connection (latency between 700ms and 1100ms).
Jitterbuffer in this case makes the difference between usable although
lagged audio and unusable audio.
This is my first bugreport, hope it is helpful. I have worked around this
problem at the moment by switching to IAX2-SIP-DAHDI routing which works but
is undesirable for other reasons.
-- System Information:
Debian Release: squeeze/sid
APT prefers testing
APT policy: (500, 'testing')
Architecture: i386 (i586)
Kernel: Linux 2.6.36
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages asterisk depends on:
ii adduser 3.112 add and remove users and groups
ii asterisk-config 1:1.6.2.9-2 Configuration files for Asterisk
ii asterisk-sounds-main [ 1:1.6.2.9-2 Core Sound files for Asterisk (Eng
ii dahdi 1:2.2.1.1-1 utilities for using the DAHDI kern
ii libasound2 1.0.23-2 shared library for ALSA applicatio
ii libc-client2007e 8:2007e~dfsg-3.1 c-client library for mail protocol
ii libc6 2.11.2-6+squeeze1 Embedded GNU C Library: Shared lib
ii libcap2 1:2.19-3 support for getting/setting POSIX.
ii libcurl3 7.21.0-1 Multi-protocol file transfer libra
ii libgcc1 1:4.4.5-4 GCC support library
ii libglib2.0-0 2.24.2-1 The GLib library of C routines
ii libgmime-2.0-2a 2.2.25-2 MIME library
ii libgsm1 1.0.13-3 Shared libraries for GSM speech co
ii libiksemel3 1.2-4 C library for the Jabber IM platfo
ii libjack-jackd2-0 [libj 1.9.5~dfsg-19 JACK Audio Connection Kit (librari
ii libldap-2.4-2 2.4.23-6 OpenLDAP libraries
ii liblua5.1-0 5.1.4-5 Simple, extensible, embeddable pro
ii libncurses5 5.7+20100313-4 shared libraries for terminal hand
ii libnewt0.52 0.52.11-1 Not Erik's Windowing Toolkit - tex
ii libogg0 1.2.0~dfsg-1 Ogg bitstream library
ii libopenais3 1.1.2-2 Standards-based cluster framework
ii libopenr2-3 1.3.0-2 MFC/R2 (telephony) call setup libr
ii libpopt0 1.16-1 lib for parsing cmdline parameters
ii libpq5 8.4.5-0squeeze1 PostgreSQL C client library
ii libpri1.4 1.4.11.3-1 Primary Rate ISDN specification li
ii libradiusclient-ng2 0.5.6-1 Enhanced RADIUS client library
ii libresample1 0.1.3-3 real-time audio resampling library
ii libsdl1.2debian 1.2.14-6.1 Simple DirectMedia Layer
ii libcurl3 7.21.0-1 Multi-protocol file transfer libra
ii libgcc1 1:4.4.5-4 GCC support library
ii libglib2.0-0 2.24.2-1 The GLib library of C routines
ii libgmime-2.0-2a 2.2.25-2 MIME library
ii libgsm1 1.0.13-3 Shared libraries for GSM speech co
ii libiksemel3 1.2-4 C library for the Jabber IM platfo
ii libjack-jackd2-0 [libj 1.9.5~dfsg-19 JACK Audio Connection Kit (librari
ii libldap-2.4-2 2.4.23-6 OpenLDAP libraries
ii liblua5.1-0 5.1.4-5 Simple, extensible, embeddable pro
ii libncurses5 5.7+20100313-4 shared libraries for terminal hand
ii libnewt0.52 0.52.11-1 Not Erik's Windowing Toolkit - tex
ii libogg0 1.2.0~dfsg-1 Ogg bitstream library
ii libopenais3 1.1.2-2 Standards-based cluster framework
ii libopenr2-3 1.3.0-2 MFC/R2 (telephony) call setup libr
ii libpopt0 1.16-1 lib for parsing cmdline parameters
ii libpq5 8.4.5-0squeeze1 PostgreSQL C client library
ii libpri1.4 1.4.11.3-1 Primary Rate ISDN specification li
ii libradiusclient-ng2 0.5.6-1 Enhanced RADIUS client library
ii libresample1 0.1.3-3 real-time audio resampling library
ii libsdl1.2debian 1.2.14-6.1 Simple DirectMedia Layer
ii libsnmp15 5.4.3~dfsg-1 SNMP (Simple Network Management Pr
ii libspandsp2 0.0.6~pre12-1 Telephony signal processing librar
ii libspeex1 1.2~rc1-1 The Speex codec runtime library
ii libspeexdsp1 1.2~rc1-1 The Speex extended runtime library
ii libsqlite0 2.8.17-6 SQLite shared library
ii libss7-1 1.0.2-1 Signalling System 7 (ss7) library
ii libssl0.9.8 0.9.8o-2 SSL shared libraries
ii libstdc++6 4.4.5-4 The GNU Standard C++ Library v3
ii libsybdb5 0.82-7 libraries for connecting to MS SQL
ii libtiff4 3.9.4-5 Tag Image File Format (TIFF) libra
ii libtonezone2.0 1:2.2.1.1-1 tonezone library (runtime)
ii libvorbis0a 1.3.1-1 The Vorbis General Audio Compressi
ii libvorbisenc2 1.3.1-1 The Vorbis General Audio Compressi
ii libvpb0 4.2.49-1 Voicetronix telephony hardware use
ii libx11-6 2:1.3.3-3 X11 client-side library
ii libxml2 2.7.7.dfsg-4 GNOME XML library
ii unixodbc 2.2.14p2-1 ODBC tools libraries
ii zlib1g 1:1.2.3.4.dfsg-3 compression library - runtime
Versions of packages asterisk recommends:
ii sox 14.3.1-1 Swiss army knife of sound processi
Versions of packages asterisk suggests:
ii asterisk-dev 1:1.6.2.9-2 Development files for Asterisk
ii asterisk-doc 1:1.6.2.9-2 Source code documentation for Aste
ii asterisk-h323 1:1.6.2.9-2 H.323 protocol support for Asteris
-- Configuration Files:
/etc/init.d/asterisk changed [not included]
-- no debconf information
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