Public bug reported:

After the last upgrade of Ubuntu 14.04.3 LTS , NetworkManager keeps
crashing.

after `sudo service network-manager start` I get the following output in
dmesg:

[2016-01-31 14:28:47]  traps: NetworkManager[11040] general protection 
ip:469fee sp:7ffc6879aa00 error:0 in NetworkManager[400000+10d000]
[2016-01-31 14:28:47]  init: network-manager main process (11040) killed by 
SEGV signal
[2016-01-31 14:28:47]  init: network-manager main process ended, respawning
[2016-01-31 14:28:47]  traps: NetworkManager[11049] general protection 
ip:469fee sp:7ffecca7d9d0 error:0 in NetworkManager[400000+10d000]
[2016-01-31 14:28:47]  init: network-manager main process (11049) killed by 
SEGV signal
[2016-01-31 14:28:47]  init: network-manager main process ended, respawning
[2016-01-31 14:28:47]  traps: NetworkManager[11062] general protection 
ip:469fee sp:7ffc218a9f50 error:0 in NetworkManager[400000+10d000]
[2016-01-31 14:28:47]  init: network-manager main process (11062) killed by 
SEGV signal
[2016-01-31 14:28:47]  init: network-manager main process ended, respawning
[2016-01-31 14:28:47]  traps: NetworkManager[11076] general protection 
ip:469fee sp:7fff7f128270 error:0 in NetworkManager[400000+10d000]
[2016-01-31 14:28:47]  init: network-manager main process (11076) killed by 
SEGV signal
[2016-01-31 14:28:47]  init: network-manager main process ended, respawning
[2016-01-31 14:28:47]  traps: NetworkManager[11088] general protection 
ip:469fee sp:7fff66528f90 error:0 in NetworkManager[400000+10d000]
[2016-01-31 14:28:47]  init: network-manager main process (11088) killed by 
SEGV signal
[2016-01-31 14:28:47]  init: network-manager main process ended, respawning
[2016-01-31 14:28:47]  traps: NetworkManager[11092] general protection 
ip:469fee sp:7fffab819070 error:0 in NetworkManager[400000+10d000]
[2016-01-31 14:28:47]  init: network-manager main process (11092) killed by 
SEGV signal
[2016-01-31 14:28:47]  init: network-manager main process ended, respawning
[2016-01-31 14:28:47]  traps: NetworkManager[11096] general protection 
ip:469fee sp:7ffe7aa91c20 error:0 in NetworkManager[400000+10d000]
[2016-01-31 14:28:47]  init: network-manager main process (11096) killed by 
SEGV signal
[2016-01-31 14:28:47]  init: network-manager main process ended, respawning
[2016-01-31 14:28:47]  traps: NetworkManager[11100] general protection 
ip:469fee sp:7ffedfe81460 error:0 in NetworkManager[400000+10d000]
[2016-01-31 14:28:47]  init: network-manager main process (11100) killed by 
SEGV signal
[2016-01-31 14:28:47]  init: network-manager main process ended, respawning
[2016-01-31 14:28:47]  traps: NetworkManager[11104] general protection 
ip:469fee sp:7ffdc475f140 error:0 in NetworkManager[400000+10d000]
[2016-01-31 14:28:47]  init: network-manager main process (11104) killed by 
SEGV signal
[2016-01-31 14:28:47]  init: network-manager main process ended, respawning
[2016-01-31 14:28:47]  traps: NetworkManager[11108] general protection 
ip:469fee sp:7ffdeb437010 error:0 in NetworkManager[400000+10d000]
[2016-01-31 14:28:47]  init: network-manager main process (11108) killed by 
SEGV signal
[2016-01-31 14:28:47]  init: network-manager main process ended, respawning
[2016-01-31 14:28:47]  init: network-manager main process (11112) killed by 
SEGV signal
[2016-01-31 14:28:47]  init: network-manager respawning too fast, stopped


This problem prevents me to see nm-applet, and makes me unable to connect to 
WiFi network.

** Affects: network-manager (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1540088

Title:
  NetworkManager crashes after upgrade, preventing nm-applet to show

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