[Bug 1578962] Re: [SRU] nm-applet crash with assertion failed for some users

[Aron Xu]

** Summary changed:

- nm-applet crashed with SIGABRT in g_assertion_message()
+ [SRU] nm-applet crash with assertion failed for some users

** Description changed:

- crashes every time using applet to switch from an openvpn connection
- back to wired connection
+ [Impact]
  
- ProblemType: Crash
- DistroRelease: Ubuntu 16.04
- Package: network-manager-gnome 1.1.93-1ubuntu1
- ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
- Uname: Linux 4.4.0-21-generic x86_64
- ApportVersion: 2.20.1-0ubuntu2
- Architecture: amd64
- CrashCounter: 1
- CurrentDesktop: Unity
- Date: Fri May  6 18:28:28 2016
- ExecutablePath: /usr/bin/nm-applet
- IfupdownConfig:
-  # interfaces(5) file used by ifup(8) and ifdown(8)
-  auto lo
-  iface lo inet loopback
- InstallationDate: Installed on 2016-04-01 (34 days ago)
- InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Beta amd64 (20160323)
- IpRoute:
-  default via 10.0.0.138 dev eno1  proto static  metric 100 
-  10.0.0.0/24 dev eno1  proto kernel  scope link  src 10.0.0.61  metric 100 
-  169.254.0.0/16 dev eno1  scope link  metric 1000
- IwConfig:
-  eno1      no wireless extensions.
-  
-  lo        no wireless extensions.
- NetworkManager.state:
-  [main]
-  NetworkingEnabled=true
-  WirelessEnabled=true
-  WWANEnabled=true
-  WimaxEnabled=true
- ProcCmdline: nm-applet
- ProcEnviron:
-  LANGUAGE=en_AU:en
-  PATH=(custom, no user)
-  XDG_RUNTIME_DIR=<set>
-  LANG=en_AU.UTF-8
-  SHELL=/bin/bash
- RfKill:
-  
- Signal: 6
- SourcePackage: network-manager-applet
- StacktraceTop:
-  g_assertion_message () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
-  g_assertion_message_expr () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
-  ?? ()
-  ?? ()
-  g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
- Title: nm-applet crashed with SIGABRT in g_assertion_message()
- UpgradeStatus: No upgrade log present (probably fresh install)
- UserGroups: adm lpadmin sambashare sudo wireshark
- nmcli-con:
-  NAME                   UUID                                  TYPE            TIMESTAMP   TIMESTAMP-REAL                 AUTOCONNECT  AUTOCONNECT-PRIORITY  READONLY  DBUS-PATH                                   ACTIVE  DEVICE  STATE      ACTIVE-PATH                                        
-  Wired connection 1     873b4698-101f-4f18-9d81-c10e6e1fda35  802-3-ethernet  1462523308  Fri 06 May 2016 18:28:28 AEST  yes          4294966297            no        /org/freedesktop/NetworkManager/Settings/1  yes     eno1    activated  /org/freedesktop/NetworkManager/ActiveConnection/3 
-  do.tim-richardson.net  57e9a26d-0ebd-4004-a599-df2a14d14344  vpn             1462523308  Fri 06 May 2016 18:28:28 AEST  yes          0                     no        /org/freedesktop/NetworkManager/Settings/0  no      --      --         --
- nmcli-dev:
-  DEVICE  TYPE      STATE      DBUS-PATH                                  CONNECTION          CON-UUID                              CON-PATH                                           
-  eno1    ethernet  connected  /org/freedesktop/NetworkManager/Devices/0  Wired connection 1  873b4698-101f-4f18-9d81-c10e6e1fda35  /org/freedesktop/NetworkManager/ActiveConnection/3 
-  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'.
+ nm-applet crashes for some users with assertion failed
+ 
+ [Test case]
+ 
+ After installing the update, errors.ubuntu.com should receive a much
+ smaller number of assertion failed crash reports.
+ 
+ [Regression Potential]
+ 
+ The assert is removed by upstream and thus backported to archive package
+ because it was believed most of the assertion triggered are false
+ positives, hence the potential of regression is having mis-functionality
+ but the chance is fair low.

** Changed in: network-manager-applet (Ubuntu Xenial)
   Importance: Undecided => High

** Changed in: network-manager-applet (Ubuntu Xenial)
       Status: New => In Progress

** Changed in: network-manager-applet (Ubuntu Xenial)
     Assignee: (unassigned) => Aron Xu (happyaron)

** Changed in: network-manager-applet (Ubuntu)
       Status: Fix Committed => Triaged

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https://bugs.launchpad.net/bugs/1578962

Title:
  [SRU] nm-applet crash with assertion failed for some users

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