network manager crashed when removing a usb wifi stick after installing broadcom drivers

[Lyn Perrine]

To reprodcuce on a laptop install on wifi with a realtek wifi adapter and then install the bcmwl-kernel-source package then pull the wifi adapter out to remove it and apport reports that network manager has crashed.

network-manager:
  Installed: 1.0.4-0ubuntu3
  Candidate: 1.0.4-0ubuntu3
  Version table:
 *** 1.0.4-0ubuntu3 0
        500 http://us.archive.ubuntu.com/ubuntu/ wily/main amd64 Packages
        100 /var/lib/dpkg/status
Description: Ubuntu Wily Werewolf (development branch)
Release: 15.10

I expected network manager not to crash instead it crashed when I removed the usb wifi adapter.

ProblemType: Crash
DistroRelease: Ubuntu 15.10
Package: network-manager 1.0.4-0ubuntu3
ProcVersionSignature: Ubuntu 4.2.0-10.12-generic 4.2.0
Uname: Linux 4.2.0-10-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.18.1-0ubuntu1
Architecture: amd64
Date: Tue Sep 22 18:54:25 2015
ExecutablePath: /usr/sbin/NetworkManager
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
InstallationDate: Installed on 2015-09-23 (0 days ago)
InstallationMedia: Lubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20150922.1)
IpRoute:
 default via 192.168.88.1 dev wlp2s0 proto static metric 600
 192.168.88.0/24 dev wlp2s0 proto kernel scope link src 192.168.88.253 metric 600
 192.168.88.0/24 dev wlp2s0 proto kernel scope link src 192.168.88.253 metric 601
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
 WimaxEnabled=true
ProcCmdline: /usr/sbin/NetworkManager --no-daemon
ProcEnviron:
 LANG=en_US.UTF-8
 PATH=(custom, no user)
SegvAnalysis: Skipped: missing required field "Disassembly"
Signal: 11
SourcePackage: network-manager
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

nmcli-dev:
 DEVICE TYPE STATE DBUS-PATH CONNECTION CON-UUID CON-PATH
 wlp2s0 wifi connected /org/freedesktop/NetworkManager/Devices/3 Perrine 1 c507f176-1e31-4e59-a57e-eb7a7ff7e008 /org/freedesktop/NetworkManager/ActiveConnection/2
 enp3s0 ethernet unavailable /org/freedesktop/NetworkManager/Devices/0 -- -- --
 lo loopback unmanaged /org/freedesktop/NetworkManager/Devices/1 -- -- --
nmcli-nm: Error: command ['nmcli', '-f', 'all', 'nm'] failed with exit code 2: Error: Object 'nm' is unknown, try 'nmcli help'.

[Apport retracing service (apport)]

StacktraceTop:
 nm_device_uses_assumed_connection (self=self@entry=0x22463d0) at devices/nm-device.c:946
 _set_state_full (self=self@entry=0x22463d0, state=state@entry=NM_DEVICE_STATE_FAILED, reason=NM_DEVICE_STATE_REASON_SSID_NOT_FOUND, quitting=quitting@entry=0) at devices/nm-device.c:8436
 nm_device_state_changed (self=self@entry=0x22463d0, state=state@entry=NM_DEVICE_STATE_FAILED, reason=<optimized out>) at devices/nm-device.c:8514
 link_timeout_cb (user_data=<error reading variable: value has been optimized out>) at nm-device-wifi.c:2037
 g_timeout_dispatch (source=0x2259400, callback=<optimized out>, user_data=<optimized out>) at /build/glib2.0-hcw3A1/glib2.0-2.45.7/./glib/gmain.c:4577

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.