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[Bug 1242339] Re: window-stack-bridge crashed with SIGSEGV in data()

 

** Branch linked: lp:ubuntu/saucy-proposed/hud

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https://bugs.launchpad.net/bugs/1242339

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

Status in Unity HUD:
  Fix Committed
Status in “hud” package in Ubuntu:
  Confirmed
Status in “hud” source package in Saucy:
  Fix Committed

Bug description:
  [Impact]
  High impoact on our users, this is one of the highest reported issues on errors.ubuntu.com: https://errors.ubuntu.com/problem/80ec348bd203ad9f5b91a956c463234dce72d2e7

  [Test case]
  Use Unity, switch between applications and try to access menus via the HUD.

  [Rgression potential]
  This changes behavior in the window properties retrieval. Regression potential is low since this would simply return an empty set (rather than crashing) should the window not be identifyable.

  ---

  Just working in eclipse

  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 i686
  NonfreeKernelModules: nvidia
  ApportVersion: 2.12.5-0ubuntu2
  Architecture: i386
  Date: Sun Oct 20 20:11:13 2013
  ExecutablePath: /usr/lib/i386-linux-gnu/hud/window-stack-bridge
  InstallationDate: Installed on 2012-05-14 (523 days ago)
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
  MarkForUpload: True
  ProcCmdline: /usr/lib/i386-linux-gnu/hud/window-stack-bridge
  ProcEnviron:
   PATH=(custom, no user)
   LANGUAGE=ru
   XDG_RUNTIME_DIR=<set>
   LANG=ru_RU.UTF-8
   SHELL=/bin/bash
  SegvAnalysis:
   Segfault happened at: 0xb73110d7 <_ZN22QDBusAbstractInterface25asyncCallWithArgumentListERK7QStringRK5QListI8QVariantE+23>:	mov    0x4(%edi),%esi
   PC (0xb73110d7) ok
   source "0x4(%edi)" (0x00000004) not located in a known VMA region (needed readable region)!
   destination "%esi" ok
  SegvReason: reading NULL VMA
  Signal: 11
  SourcePackage: hud
  StacktraceTop:
   QDBusAbstractInterface::asyncCallWithArgumentList(QString const&, QList<QVariant> const&) () from /usr/lib/i386-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 2013-10-19 (1 days ago)
  UserGroups: adm lpadmin nopasswdlogin sambashare sudo
  upstart.window-stack-bridge.log:
   QDBusConnection: name 'org.ayatana.bamf' had owner '' but we thought it was ':1.14'
   Error getting parents for "/org/ayatana/bamf/window/75613984" QDBusError("org.freedesktop.DBus.Error.UnknownMethod", "Интерфейс «org.ayatana.bamf.view» для пути /org/ayatana/bamf/window/75613984 объекта не найден")
   Error getting parents for "/org/ayatana/bamf/window/75614083" QDBusError("org.freedesktop.DBus.Error.UnknownMethod", "Интерфейс «org.ayatana.bamf.view» для пути /org/ayatana/bamf/window/75614083 объекта не найден")

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