[Bug 780602] Re: nm-applet leaks memory and stops functioning after a while

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** Tags added: patch

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https://bugs.launchpad.net/bugs/780602

Title:
  nm-applet leaks memory and stops functioning after a while

Status in OEM Priority Project:
  Fix Committed
Status in OEM Priority Project precise series:
  In Progress
Status in OEM Priority Project quantal series:
  Fix Committed
Status in “libdbusmenu” package in Ubuntu:
  Confirmed
Status in “network-manager-applet” package in Ubuntu:
  Fix Released
Status in “network-manager-applet” source package in Precise:
  Fix Released
Status in “network-manager-applet” source package in Quantal:
  Confirmed

Bug description:
  The nm-applet embedded in the task bar becomes indeterminestically
  unresponsive.  Clicking on the applet will still show the popup menu,
  but none of the menu entries respond to mouse clicks.  When this
  happens, the "VPN connections" and "Other networks" menus also show up
  completely empty (only a small menu stub is displayed).

  It is uncertain what causes this behavior. It was originally thought
  that the cause was memory leaks in nm-applet: nm-applet leaks memory
  in a fresh install of Natty, increasing to over 200 Mb in 6-8 hours.
  However, fixes for the memory leaks failed to resolve the occurrence
  of the anomalous behavior described above.

  dbus-monitor shows errors such as the following when clicking a menu item or attempting to access a submenu:
  error sender=:1.14 -> dest=:1.67 error_name=org.gtk.GDBus.UnmappedGError.Quark._LIBDBUSMENU_2dGLIB.Code0 reply_serial=107705
     string "The IDs supplied '[80846]' do not refer to any menu items we have"

  The errors are returned by bus_event_group or bus_about_to_show_group
  in libdbusmenu-glib/server.c.

  --

  Stable Release Update Application:

  [Impact]
  This issue affects most and any users of nm-applet, especially in environments (such as offices) where the detected wireless networks change a lot, and where roaming can occur frequently.

  [Test Case]
  Run nm-applet for multiple hours:
   - Observe that the VPN Connections submenu still opens and lists connections (if VPN connections are configured)
   - Observe that the "More networks" submenu for additional detected wireless networks still opens and lists networks.

  A common failure case is where such a submenu will open but show an
  empty list (a piece of menu a few milimeters long).

  [Regression Potential]
  Minimal, the fixes have been available for a while in the development release (and in other recent releases) with no regressions; furthermore, this corrects "obviously" wrong memory handling without changing the effective behavior of the application.
  Possible issues could be introducing new memory leaks with the changes however, and although the risk is minimal, this could cause the same failure behavior as listed above under [Test Case].

  --

  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: network-manager-gnome 0.8.4~git.20110318t152954.9c4c9a0-0ubuntu1
  ProcVersionSignature: Ubuntu 2.6.38-9.43-generic-pae 2.6.38.4
  Uname: Linux 2.6.38-9-generic-pae i686
  NonfreeKernelModules: nvidia
  Architecture: i386
  CRDA: Error: [Errno 2] No such file or directory
  Date: Tue May 10 11:53:09 2011
  EcryptfsInUse: Yes
  IfupdownConfig:
   auto lo
   iface lo inet loopback
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta i386 (20110413)
  IpRoute:
   192.168.2.0/24 dev eth0  proto kernel  scope link  src 192.168.2.12  metric 1
   169.254.0.0/16 dev eth0  scope link  metric 1000
   default via 192.168.2.1 dev eth0  proto static
  Keyfiles: Error: [Errno 2] No such file or directory
  NetworkManager.state:
   [main]
   NetworkingEnabled=true
   WirelessEnabled=true
   WWANEnabled=true
  ProcEnviron:
   LANGUAGE=en_CA:en
   PATH=(custom, user)
   LANG=en_CA.UTF-8
   SHELL=/bin/bash
  SourcePackage: network-manager-applet
  UpgradeStatus: No upgrade log present (probably fresh install)

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