Hi there!

We are implementig a on2many videoconference using Kurento. The
procedure is like this:

• The transmitter opens the videoconference and emits video and audio
  using Firefox or Chrome
• A receiver joins the conference and gets de video and audio on his
  Chrome or Firefox
• 18 minutes approx. after initiating the conference, Kurento crashes

And syslog shows:

kernel: [136447.115593] traps: KmsLoop[20422] general protection
ip:7f6c9ed66d36 sp:7f6c3bffeb90 error:0 in
libglib-2.0.so.0.4200.1[7f6c9ed0e000+10a000]
kernel: [158988.522731] KmsLoop[9007]: segfault at 43 ip
00007ffb8d669ec8 sp 00007ffb6277dbb0 error 4 in
libnice.so.10.4.1[7ffb8d65f000+3a000]

Why Kurento crashes in a so predictably way? Any clue?

Our environment:

Distributor ID: Ubuntu
Description: Ubuntu 14.04.3 LTS
Release: 14.04
Codename: trusty

Version: 6.1.1
Found modules:
Module: 'backgroundextractor' version '6.1.1'
Module: 'chroma' version '6.1.1'
Module: 'core' version '6.1.2'
Module: 'crowddetector' version '6.1.1'
Module: 'elements' version '6.1.1'
Module: 'facesegmentator' version '6.1.1'
Module: 'filters' version '6.1.1'
Module: 'markerdetector' version '6.1.1'
Module: 'platedetector' version '6.1.1'
Module: 'pointerdetector' version '6.1.1'

ii gstreamer1.5-libav:amd64 1.5.2.1~20150901123759.34.g07a7b16.trusty
amd64 libav plugin for GStreamer
ii gstreamer1.5-nice:amd64 0.1.7.1~20151001151322.10.ge060eb5.trusty
amd64 ICE library (GStreamer plugin)
ii gstreamer1.5-plugins-bad:amd64
1.5.91~20151001151316.36.gdaf52b5.trusty amd64 GStreamer plugins
from the "bad" set
ii gstreamer1.5-plugins-base:amd64
1.5.91~20151001151055.18.g79a42eb.trusty amd64 GStreamer plugins
from the "base" set
ii gstreamer1.5-plugins-good:amd64
1.5.91~20151001151133.27.g3b1cc74.trusty amd64 GStreamer plugins
from the "good" set
ii gstreamer1.5-plugins-ugly:amd64
1.5.91~20151001151113.10.g1b92d89.trusty amd64 GStreamer plugins
from the "ugly" set
ii gstreamer1.5-pulseaudio:amd64
1.5.91~20151001151133.27.g3b1cc74.trusty amd64 GStreamer plugin
for PulseAudio
ii gstreamer1.5-x:amd64 1.5.91~20151001151055.18.g79a42eb.trusty
amd64 GStreamer plugins for X11 and Pango
ii kms-background-extractor-6.0
6.1.1.trusty amd64 Kurento
Background Extractor Filter
ii kms-chroma-6.0 6.1.1.trusty
amd64 Kurento Chroma Filter
ii kms-core-6.0 6.1.2.trusty amd64
Kurento core module
ii kms-crowddetector-6.0 6.1.1.trusty
amd64 Kurento Crowd Detector Filter
ii kms-elements-6.0 6.1.1.trusty
amd64 Kurento elements module
ii kms-face-segmentator-6.0 6.1.1.trusty
amd64 Kurento Face Segmentator Filter
ii kms-filters-6.0 6.1.1.trusty
amd64 Kurento filters module
ii kms-jsonrpc-1.0 1.0.0.trusty
amd64 Kurento jsonrpc library
ii kms-markerdetector-6.0 6.1.1.trusty
amd64 AR Marker detector for Kurento
ii kms-platedetector-6.0 6.1.1.trusty
amd64 Kurento Plate Detector Filter
ii kms-pointerdetector-6.0 6.1.1.trusty
amd64 Kurento Pointer Detector Filter
ii kmsjsoncpp 1.6.3~20151001151058.38.g263929e.trusty amd64
Kurento jsoncpp library
ii kurento-media-server-6.0 6.1.1.trusty
amd64 Kurento Media Server
ii libgstreamer-plugins-bad1.5-0:amd64
1.5.91~20151001151316.36.gdaf52b5.trusty amd64 GStreamer
development files for libraries from the "bad" set
ii libgstreamer-plugins-base1.5-0:amd64
1.5.91~20151001151055.18.g79a42eb.trusty amd64 GStreamer
libraries from the "base" set
ii libgstreamer1.5-0:amd64 1.5.91~20151001151012.86.g29e3bbd.trusty
amd64 Core GStreamer libraries and elements
ii libnice10:amd64 0.1.7.1~20151001151322.10.ge060eb5.trusty
amd64 ICE library (shared library)
ii openwebrtc-gst-plugins 0.10.0~20151001151244.100.g61cc54b.trusty
amd64 OpenWebRTC specific GStreamer plugins

/etc/default/kurento-media-server-6.0

START_DAEMON=true

1. Additional options that are passed to the Daemon.
   DAEMON_OPTS=""

unset GST_PLUGIN_PATH

#enable core dump
ulimit -c unlimited
#unlimit open files
ulimit -n $((($(cat /proc/sys/fs/file-max) * 50) / 100 ))

1. Next line enables debug for some kurento classes it can be modified to
   change
2. log level and logged tags
   #export GST_DEBUG=1,Kurento*:5
   export GST_DEBUG=2,Kurento*:5

1. whom the daemons should run as
   DAEMON_USER=nobody

DAEMON_LOG=/var/log/kurento-media-server

export KURENTO_LOGS_PATH=$DAEMON_LOG
#export KURENTO_LOG_FILE_SIZE=300
#export KURENTO_NUMBER_LOG_FILES=20

/etc/kurento/kurento.conf.json

{
"mediaServer" : {
"resources":

,
"net" : {
// Uncomment just one of them
/*
"rabbitmq":

*/
"websocket": {
"port": 8888,
//"secure":

,
//"registrar":

,
"path": "kurento",
// "threads": 10
"threads": 20
}
}
}
}

Any comment is more than welcome.

Thanks in advance,
Alberto.

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