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[Launchpad Bug Tracker <1242032@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package hud -
13.10.1+14.04.20131029.1-0ubuntu1

---------------
hud (13.10.1+14.04.20131029.1-0ubuntu1) trusty; urgency=low

  [ Pete Woods ]
  * Fix the ref counting of application sources The application sources
    are now entirely owned by the application-list's hash table.

  [ Ted Gould ]
  * Add apport dependencies to the package hook. (LP: #1233994)
  * Don't show disabled items in search results. (LP: #1192646)

  [ Charles Kerr ]
  * Add a nullptr safeguard to prevent a crash-on-null-ptr-reference.
    Also, move a QMap lookup outside of a for loop. Yay! . (LP:
    #1242032)
  * if we can't get the busname, log a g_critical and then exit
    gracefully instead of abort()ing in g_error. (LP: #1244688)
  * Add a null safeguard when accessing window SharedPtrs held in the
    m_windows QMap . (LP: #1243654)

  [ Ubuntu daily release ]
  * Automatic snapshot from revision 343
 -- Ubuntu daily release <ps-jenkins@xxxxxxxxxxxxxxxxxxx>   Tue, 29 Oct 2013 11:17:56 +0000

** Changed in: hud (Ubuntu)
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1242032

Title:
  window-stack-bridge crashed with SIGSEGV in data()

Status in Unity HUD:
  Fix Committed
Status in “hud” package in Ubuntu:
  Fix Released

Bug description:
  Got this while developing a python based program (SDL2 window, no HUD
  support) using gedit and terminal. Not sure if I hit Alt or which
  program may have been active.

  ProblemType: Crash
  DistroRelease: Ubuntu 13.10
  Package: hud 13.10.1+13.10.20131014-0ubuntu1
  ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
  Uname: Linux 3.11.0-12-generic x86_64
  NonfreeKernelModules: fglrx
  ApportVersion: 2.12.5-0ubuntu2
  Architecture: amd64
  Date: Sat Oct 19 15:30:17 2013
  ExecutablePath: /usr/lib/x86_64-linux-gnu/hud/window-stack-bridge
  InstallationDate: Installed on 2012-11-10 (342 days ago)
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
  MarkForUpload: True
  ProcCmdline: /usr/lib/x86_64-linux-gnu/hud/window-stack-bridge
  SegvAnalysis:
   Segfault happened at: 0x7f1784658bd4 <_ZN22QDBusAbstractInterface25asyncCallWithArgumentListERK7QStringRK5QListI8QVariantE+20>:	mov    0x8(%rsi),%rbp
   PC (0x7f1784658bd4) ok
   source "0x8(%rsi)" (0x00000008) not located in a known VMA region (needed readable region)!
   destination "%rbp" ok
  SegvReason: reading NULL VMA
  Signal: 11
  SourcePackage: hud
  StacktraceTop:
   QDBusAbstractInterface::asyncCallWithArgumentList(QString const&, QList<QVariant> const&) () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
   BamfWindow::xProp(QString const&) ()
   BamfWindowStack::GetWindowProperties(unsigned int, QString const&, QStringList const&) ()
   WindowStackAdaptor::GetWindowProperties(unsigned int, QString const&, QStringList const&) ()
   ?? ()
  Title: window-stack-bridge crashed with SIGSEGV in QDBusAbstractInterface::asyncCallWithArgumentList()
  UpgradeStatus: Upgraded to saucy on 2013-10-18 (0 days ago)
  UserGroups: adm cdrom dip libvirtd lpadmin plugdev sambashare sudo
  upstart.hud.log:
   ** (process:23502): WARNING **: GDBus.Error:org.freedesktop.DBus.Error.NoReply: Message did not receive a reply (timeout by message bus)
   
   ** (process:23502): WARNING **: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name :1.2 was not provided by any .service files
   
   ** (process:23502): WARNING **: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name :1.2 was not provided by any .service files
  upstart.window-stack-bridge.log:
   Error getting parents for "/org/ayatana/bamf/window/67109289" QDBusError("org.freedesktop.DBus.Error.UnknownMethod", "No such interface 'org.ayatana.bamf.view' on object at path /org/ayatana/bamf/window/67109289") 
   Could not get window property "_GTK_UNIQUE_BUS_NAME" "/org/ayatana/bamf/window/52428810" 
   Could not get window property "_GTK_UNIQUE_BUS_NAME" "/org/ayatana/bamf/window/52428810" 
   Could not get window property "_GTK_UNIQUE_BUS_NAME" "/org/ayatana/bamf/window/52428810" 
   Could not get window property "WM_NAME" "/org/ayatana/bamf/window/52428810"

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