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[Antti Kaijanmäki <antti.kaijanmaki@xxxxxxxxxxxxx>]

Looking at the stacktrace, the assertion error happens inside dbus-cpp
worker thread that has called core::dbus::Bus::run().

Some quick googling:
http://stackoverflow.com/questions/1105745/pthread-mutex-assertion-error

** Also affects: dbus-cpp
   Importance: Undecided
       Status: New

** Changed in: dbus-cpp
       Status: New => Confirmed

** Also affects: dbus-cpp (Ubuntu)
   Importance: Undecided
       Status: New

** Also affects: dbus-cpp (Ubuntu RTM)
   Importance: Undecided
       Status: New

** Changed in: dbus-cpp (Ubuntu)
       Status: New => Confirmed

** Changed in: dbus-cpp (Ubuntu RTM)
       Status: New => Confirmed

** Changed in: dbus-cpp (Ubuntu)
   Importance: Undecided => Critical

** Changed in: dbus-cpp (Ubuntu RTM)
   Importance: Undecided => Critical

** Changed in: dbus-cpp (Ubuntu)
     Assignee: (unassigned) => Thomas Voß (thomas-voss)

** Changed in: dbus-cpp (Ubuntu RTM)
     Assignee: (unassigned) => Thomas Voß (thomas-voss)

** Changed in: indicator-network (Ubuntu)
       Status: Confirmed => Invalid

-- 
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Packages, which is subscribed to dbus-cpp in Ubuntu.
https://bugs.launchpad.net/bugs/1382595

Title:
  [TOPBLOCKER] /usr/lib/arm-linux-gnueabihf/indicator-network/indicator-
  network-service:indicator-network-service: pthread_mutex_lock.c:80:
  __pthread_mutex_lock: Assertion `mutex->__data.__owner == 0' failed.

Status in DBus C++:
  Confirmed
Status in “dbus-cpp” package in Ubuntu:
  Confirmed
Status in “indicator-network” package in Ubuntu:
  Invalid
Status in “dbus-cpp” package in Ubuntu RTM:
  Confirmed

Bug description:
  The Ubuntu Error Tracker has been receiving reports about a problem
  regarding indicator-network.  This problem was most recently seen with
  version 0.5.1+14.10.20141015-0ubuntu1, the problem page at
  https://errors.ubuntu.com/problem/ecc14b5d54f3e0a0f1720cad0c623f81c8a16988
  contains more details.

  steps to reproduce: (need to trigger race condition)
  1. pull down network indicator
  2. toggle flight mode on and off quickly a few times
  3. click sim card 1 and 2
  4. toggle flight mode
  5. swipe up close indicators
  6. repeat steps 1-5 until crash occurs

  expected results:
  no crash happens

  actual results:
  Bluetooth indicator blinks (appear and disappear) in indicator bar at top of screen, and network indicator crashes. 

  additional info:
  eventually the bluetooth indicator appears stable in the indicators at the top of the screen.

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