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[Launchpad Bug Tracker <1302955@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package unity - 7.2.4+14.04.20150316-0ubuntu1

---------------
unity (7.2.4+14.04.20150316-0ubuntu1) trusty; urgency=medium

  [ Andrea Azzarone ]
  * Avoid running potentially dangerous code paths when the screen is
    locked. (LP: #1410582)
  * Ungrab the shoutdown dialog as soon as possible. (LP: #1398287)
  * Use COMPIZ_METAKEY where needed. (LP: #1363534)
  * disabled Pointer Barriers during lockscreen (LP: #1401911)
  * disabled markup for VolumeLauncherIcon quicklist menu items (LP:
    #1413411)
  * enable Dash, Hud, and session dialogs over full screen window (LP:
    #1159249, #860970, #1413773, #1404486)
  * made unity unlockable if user is in nopsswdlogin group (LP:
    #1413790)
  * skipped the animation of BGHash on startup to prevent unwanted fade-
    in (LP: #1241757)

  [ Luke Yelavich ]
  * extended accessible exploration of the Dash dynamic content (LP:
    #1066157)

  [ Marco Trevisan (Treviño) ]
  * MenuManager: make sure menus are always shown when mouse is over
    them or when the always-show-menus option is on (LP: #955193,
    #1390562, #1374942, #1312137)
  * PanelService: use gdbus to notfy upstart of service start/stop (LP:
    #1302955)
 -- CI Train Bot <ci-train-bot@xxxxxxxxxxxxx>   Mon, 16 Mar 2015 17:30:35 +0000

** Changed in: unity (Ubuntu Trusty)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1302955

Title:
  upstart user session leaks all the dbus events it receives

Status in Unity:
  Fix Released
Status in Unity 7.2 series:
  In Progress
Status in unity package in Ubuntu:
  Fix Released
Status in upstart package in Ubuntu:
  Confirmed
Status in unity source package in Trusty:
  Fix Released

Bug description:
  [Impact]

  The unity-panel-service process has been caching D-Bus messages sent
  from upstart, effectively leaking memory.  The solution replaces the
  offending code with a single upstart event emission.

  [Test Case]

  0. Make sure there is a user session job with a dbus rule (eg unity-greeter-session-broadcast)
  1. Install and run system-load-indicator (indicator-multiload)
  2. Set the update interval to 100ms
  3. Now watch the memory use of init --user increase by 100kb per second
  4. Also open up upstart-monitor to see all the dbus messages being sent

  [Regression Potential]

  Some kind of hidden functionality depending on upstart events sent
  through D-Bus to the unity-panel-service may have become disconnected.
  Unlikely.

  [Other Info]

  The fix for Ubuntu 14.04 LTS was cherry picked from the Ubuntu "Vivid
  Vervet" dev release where it has been in regular use for some time
  without apparent regression.

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