Asterisk Crashes Randomly With Cepstral Swift TTS

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Asterisk Users 2 Comments

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

, 0x0}
text = 0x7f7928f9a230 “413 E 3RD ST”
rc = 0x0
tmp_exten = “\000”
results = ‘\000’
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 , 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”, , 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’ ,
“`\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

, 0x0}*

Should I look into using another TTS engine?

thanks,

2 thoughts on - Asterisk Crashes Randomly With Cepstral Swift TTS

  • Hi Bryan,

    I haven’t used app_Swift with Cepstral but iirc it wasn’t deemed very stable.

    If you are not tied to the certified Asterisk version then perhaps try using the latest Asterisk version (currently 11.13.0).

    [snip]

    Have you tried contacting the app_swift developer and/or filed a bug at https://issues.asterisk.org/jira/secure/Dashboard.jspa ?

    You could try UniMRCP which sits between Asterisk and Cepstral replacing app_swift: http://unimrcp.org

    HTH, Patrick

  • Do you or anyone have any experience using Swift with UniMRCP? I tried a few months ago but gave up. The documentation is not very clear.

    Yes, I am reaching out to the developer of app_swift.

    thanks,

    Bryan Burroughs