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

[Otus]

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"

[Apport retracing service (apport)]

StacktraceTop:
 data (this=0x8) at ../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:134
 qGetPtrHelper<QScopedPointer<QObjectData> > (p=...) at ../../include/QtCore/../../src/corelib/global/qglobal.h:991
 d_func (this=0x0) at qdbusabstractinterface.h:158
 QDBusAbstractInterface::asyncCallWithArgumentList (this=0x0, method=..., args=...) at qdbusabstractinterface.cpp:493
 Xprop (xprop=..., this=0x0) at /build/buildd/hud-13.10.1+13.10.20131014/obj-x86_64-linux-gnu/window-stack-bridge/BamfViewInterface.h:247

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Charles Kerr (charlesk)]

This is the #1 bug on errors.ubuntu.com this morning, so upgrading to High

[PS Jenkins bot (ps-jenkins)]

Fix committed into lp:hud at revision 341, scheduled for release in hud, milestone Unknown

[Launchpad Janitor (janitor)]

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 <email address hidden> Tue, 29 Oct 2013 11:17:56 +0000