Summary:	ASTERISK-16010: startup fails with libspeex.so.1.2.0
Reporter:	Sean Darcy (seandarcy)	Labels:
Date Opened:	2010-04-23 20:01:38	Date Closed:	2010-06-02 12:31:53
Priority:	Minor	Regression?	No
Status:	Closed/Complete	Components:	Codecs/codec_speex
Versions:		Frequency of Occurrence
Related Issues:
Environment:		Attachments:
Description:	I'm upgrading from 1.6.1.18 to 1.6.2.6. configure, make, make menuselect, and make install all work without error. I've rm'd /usr/lib/asterisk/modules. On startup 1.6.2.6 (and 1.6.2.7-rc2) hangs here:    -- CODEC SPEEX: Setting preprocessor Dereverb Level to 0.300000  == Registered translator 'speextolin' from format speex to slin, cost 1 I can asterisk -r, but it's just hung. You can't even shut it down: CLI> core stop now No such command 'core stop now' Deselecting speex func and codec in menuselect makes it work. ****** ADDITIONAL INFORMATION ****** Maybe asterisk someplace began requiring a newer speex than the one I have (this is an old ubuntu feisty box)? If so, a check in configure may be appropriate.
Comments:	By: Paul Belanger (pabelanger) 2010-04-23 20:37:35 Sounds like a lock (see below) --- Debugging deadlocks: Please select DEBUG_THREADS and DONT_OPTIMIZE in the Compiler Flags section of menuselect. Recompile and install Asterisk (i.e. make install) This will then give you the console command: core show locks When the symptoms of the deadlock present themselves again, please provide output of the deadlock via: # asterisk -rx \"core show locks\" | tee /tmp/core-show-locks.txt # gdb -se \"asterisk\" <pid of asterisk> | tee /tmp/backtrace.txt gdb> bt gdb> bt full gdb> thread apply all bt Then attach the core-show-locks.txt and backtrace.txt files to this issue. Thanks! By: Leif Madsen (lmadsen) 2010-04-26 12:56:17 Set to feedback while we await output requested by pabelanger. By: Sean Darcy (seandarcy) 2010-04-30 17:31:44 Well I didn't do that,but I now know what is the problem. codecs.conf for speex: the deadlock will occur if preproccessing is set to true AND pp_vad is set to true. This works with 1.6.2.7-rc3: ;enable preprocessor [true / false] ; allows dsp functionality below but incurs CPU overhead preprocess => true ; preproc voice activity detection [true / false] ; more advanced equivalent of DTX, based on voice frequencies pp_vad => false I've no clue why pp_vad  worked with 1.16.1.17, but not 1.6.2.7-rc3. In any event, I suggest pp_vad be hard-wired to false. By: Paul Belanger (pabelanger) 2010-05-01 11:32:32 Without a backtrace showing the deadlock, we cannot triage this issue further.  If you can, please upload one after you reproduced the issue. By: Sean Darcy (seandarcy) 2010-05-01 15:22:43 It works for me sufficiently. You can't replicate this? It works for you on 1.6.2.[67]? This is a production server, so running a backtrace when it now works is highly unlikely. I'll ask though. By: Leif Madsen (lmadsen) 2010-05-04 15:32:20 I'm going to acknowledge this for now. If someone has the ability to reproduce this and upload a backtrace that would be ideal, but I understand the workaround has allowed the production server to run unabated. By: Digium Subversion (svnbot) 2010-06-02 12:29:36 Repository: asterisk Revision: 267065 U   trunk/include/asterisk/slin.h ------------------------------------------------------------------------ r267065 | jpeeler | 2010-06-02 12:29:35 -0500 (Wed, 02 Jun 2010) | 12 lines Fix infinite loop when loading codec speex This changes the sample slinear frame data to contain non-zero data so that translation calculations for speex works when preprocessing and VAD is turned on. The encoder expects samples to be returned, but when attempted with the mentioned two options and silent sample frames everything was discarded. (closes issue ASTERISK-16010) Reported by: seandarcy Review: https://reviewboard.asterisk.org/r/682/ ------------------------------------------------------------------------ http://svn.digium.com/view/asterisk?view=rev&revision=267065 By: Digium Subversion (svnbot) 2010-06-02 12:31:52 Repository: asterisk Revision: 267073 _U  branches/1.6.2/ U   branches/1.6.2/include/asterisk/slin.h ------------------------------------------------------------------------ r267073 | jpeeler | 2010-06-02 12:31:52 -0500 (Wed, 02 Jun 2010) | 19 lines Merged revisions 267065 via svnmerge from https://origsvn.digium.com/svn/asterisk/trunk ........  r267065 | jpeeler | 2010-06-02 12:29:35 -0500 (Wed, 02 Jun 2010) | 12 lines    Fix infinite loop when loading codec speex    This changes the sample slinear frame data to contain non-zero data so that  translation calculations for speex works when preprocessing and VAD is turned  on. The encoder expects samples to be returned, but when attempted with the  mentioned two options and silent sample frames everything was discarded.    (closes issue ASTERISK-16010)  Reported by: seandarcy    Review: https://reviewboard.asterisk.org/r/682/ ........ ------------------------------------------------------------------------ http://svn.digium.com/view/asterisk?view=rev&revision=267073