asterisk users - Oct 2014 - Asterisk Crashes Randomly with Cepstral Swift TTS

All,

Has anyone seen this before? This appears to be a Swift or app_swift 
bug. I'm having a difficult time finding any information or support on this.

Asterisk version:
Asterisk 11.6-cert4 built by asterisk @ ivrd02 on a x86_64 running Linux 
on 2014-08-11 13:55:25 UTC
OS:
Linux livrp03 2.6.32-431.11.2.el6.x86_64 #1 SMP Mon Mar 3 13:32:45 EST 
2014 x86_64 x86_64 x86_64 GNU/Linux

When Asterisk crashes, the backtrace always looks something like the 
following:


[Thread debugging using libthread_db enabled]
Core was generated by `/opt/asterisk/sbin/asterisk -f -C 
/opt/asterisk/etc/asterisk/asterisk.c'.
Program terminated with signal 11, Segmentation fault.
#0  0x00007f79439ba061 in LM_set_port_number () from 
/opt/swift/lib/libswift.so.6
#0  0x00007f79439ba061 in LM_set_port_number () from 
/opt/swift/lib/libswift.so.6
No symbol table info available.
#1  0x00007f79439bb7c6 in LM_init () from /opt/swift/lib/libswift.so.6
No symbol table info available.
#2  0x00007f79439c5f0d in swift_engine_open () from 
/opt/swift/lib/libswift.so.6
No symbol table info available.
#3  0x00007f7943bf9b6e in app_exec (chan=0x7f7914009e08, 
data=0x7f7928f9c680 "413 E 3RD ST") at app_swift.c:370
         res = 0
         max_digits = 0
         timeout = 0
         alreadyran = 0
         ms = 0
         len = 6043056
         availatend = 0
         argv = {0x0, 0xffffffffffffb9b0 <Address 0xffffffffffffb9b0 out 
of bounds>, 0x0}
         text = 0x7f7928f9a230 "413 E 3RD ST"
         rc = 0x0
         tmp_exten = "\000"
         results = '\000' <repeats 19 times>
         u = 0x7f7974001dc0
         f = 0x7f7928f9a4c0
         next = {tv_sec = 6014649, tv_usec = 21020457123253}
         ps = 0x7f79740165e0
         parse = 0x7f7928f9a230 "413 E 3RD ST"
         old_writeformat = {id = 687449040, fattr = {format_attr = 
{32633, 5184330, 0, 687448768, 32633, 5710841, 0, 48, 48, 687448992, 
32633, 687448800, 32633, 1946162544, 0, 1946162544, 32633, 8448136, 0, 
84, 0, 4294967292, 0, 687449104, 32633, 5827993, 0, 84, 0, 1717986919, 
1717986918, 8448135, 0, 5623124, 0, 687449040, 32633, 5630801, 0, 9, 0, 
687449040, 0, 687449104, 32633, 40, 0, 1413666990, 0, 5222777, 0, 
1946239199, 32633, 687449192, 32633, 80, 0, 0, 0, 2, 0, 5187840, 0, 
1946207160}, rtp_marker_bit = 121 'y'}}
         args = {argc = 1, argv = 0x7f7928f9a280, text = 0x7f7928f9a230 
"413 E 3RD ST", timeout = 0x0, max_digits = 0x0}
         myf = {f = {frametype = 0, subclass = {integer = 0, format = 
{id = 0, fattr = {format_attr = {0, 0, 0, 0, 257, 0, 2, 0, 1839600224, 
32767, 645521943, 1069709714, 4, 0, 0, 0, 1839600224, 32767, 687448144, 
32633, 127525399, 3225199326, 3012944407, 1069709582, 1, 0 <repeats 33 
times>, 1839600016, 32767, 2, 0, 34150224, 0}, rtp_marker_bit = 0 
'\000'}}}, datalen = 0, samples = 97009376, mallocd = 0, mallocd_hdr_len
= 177, offset = 1, src = 0x7f7928f9a050 "\207", <incomplete
sequence
\350\200>, data = {ptr = 0x0, uint32 = 0, pad = 
"\000\000\000\000\000\000\000"}, delivery = {tv_sec = 0, tv_usec = 0},
frame_list = {next = 0x0}, flags = 0, ts = 0, len = 0, seqno = 0}, 
offset = 
"\000\000\000\000\000\000\000\000\310\314\335\005\000\000\000\000\310\314\335\005",
'\000' <repeats 20 times>, 
"`\177\316\005\000\000\000\000\377\377\000\000\001\000\000\000\000\000\000\000\000\000\000"

The "out of bounds" line looks like it may be pointing to the issue.

*argv = {0x0, 0xffffffffffffb9b0 <Address 0xffffffffffffb9b0 out of 
bounds>, 0x0}*

Should I look into using another TTS engine?

thanks,

-- 
Bryan Burroughs

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Hi Bryan,

On 10/18/2014 11:47 PM, Bryan Burroughs wrote:
> All,
> 
> Has anyone seen this before? This appears to be a Swift or app_swift
> bug. I'm having a difficult time finding any information or support on
this.
I haven't used app_Swift with Cepstral but iirc it wasn't deemed very
stable.
> Asterisk version:
> Asterisk 11.6-cert4 built by asterisk @ ivrd02 on a x86_64 running Linux
> on 2014-08-11 13:55:25 UTC
> OS:
> Linux livrp03 2.6.32-431.11.2.el6.x86_64 #1 SMP Mon Mar 3 13:32:45 EST
> 2014 x86_64 x86_64 x86_64 GNU/Linux
If you are not tied to the certified Asterisk version then perhaps try
using the latest Asterisk version (currently 11.13.0).
> When Asterisk crashes, the backtrace always looks something like the
> following:
[snip]
> The "out of bounds" line looks like it may be pointing to the
issue.
> 
> *argv = {0x0, 0xffffffffffffb9b0 <Address 0xffffffffffffb9b0 out of
> bounds>, 0x0}*
Have you tried contacting the app_swift developer and/or filed a bug at
https://issues.asterisk.org/jira/secure/Dashboard.jspa ?
> Should I look into using another TTS engine?
You could try UniMRCP which sits between Asterisk and Cepstral replacing
app_swift: http://unimrcp.org

HTH,
Patrick