Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.2 (4.7.2)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-13-generic x86_64
Distribution: Ubuntu 11.10

-- Information about the crash:
- What I was doing when the application crashed:

Logging out.
Plasma crashes on exit.

- Unusual behavior I noticed:

Plasma Desktop behaves wierd as described in #286998.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f8ebcfd37c0 (LWP 4646))]

Thread 6 (Thread 0x7f8e957a4700 (LWP 4650)):
#0  0xffffffffff60017b in ?? ()
#1  0x00007f8e957a39f0 in ?? ()
#2  0x00007fffce17e7e7 in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 5 (Thread 0x7f8e94b77700 (LWP 4651)):
#0  0x00007f8eb0e47322 in g_main_context_query () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f8eb0e47e6a in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8eb0e48429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8eb9aaef3e in QEventDispatcherGlib::processEvents (this=0x1f56a80, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f8eb9a82cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f8eb9a82ef7 in QEventLoop::exec (this=0x7f8e94b76cd0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f8eb999a27f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007f8eb9a65cbf in QInotifyFileSystemWatcherEngine::run (this=0x1f52940) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f8eb999cd05 in QThreadPrivate::start (arg=0x1f52940) at thread/qthread_unix.cpp:331
#9  0x00007f8eae16156c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#10 0x00007f8eb1954efc in start_thread (arg=0x7f8e94b77700) at pthread_create.c:304
#11 0x00007f8ebc8c889d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f8e8b543700 (LWP 4748)):
#0  0x00007f8ebc8bc773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f8eb0e47f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8eb0e48792 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8e8c021516 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f8eb0e6d2b6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f8eae16156c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#6  0x00007f8eb1954efc in start_thread (arg=0x7f8e8b543700) at pthread_create.c:304
#7  0x00007f8ebc8c889d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#8  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f8e87c6c700 (LWP 4752)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f8eb6ab3fe2 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f8eb6ab4019 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f8eae16156c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#4  0x00007f8eb1954efc in start_thread (arg=0x7f8e87c6c700) at pthread_create.c:304
#5  0x00007f8ebc8c889d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f8e7c8c5700 (LWP 4806)):
#0  __pthread_mutex_unlock_usercnt (mutex=<optimized out>, decr=<optimized out>) at pthread_mutex_unlock.c:41
#1  __pthread_mutex_unlock (mutex=0x27918c8) at pthread_mutex_unlock.c:290
#2  0x00007f8eb0e46f3f in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8eb0e47dfd in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f8eb0e48429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f8eb9aaef3e in QEventDispatcherGlib::processEvents (this=0x2d57770, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#6  0x00007f8eb9a82cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f8eb9a82ef7 in QEventLoop::exec (this=0x7f8e7c8c4d00, flags=...) at kernel/qeventloop.cpp:201
#8  0x00007f8eb999a27f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#9  0x00007f8eb999cd05 in QThreadPrivate::start (arg=0x2699a90) at thread/qthread_unix.cpp:331
#10 0x00007f8eae16156c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#11 0x00007f8eb1954efc in start_thread (arg=0x7f8e7c8c5700) at pthread_create.c:304
#12 0x00007f8ebc8c889d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f8ebcfd37c0 (LWP 4646)):
[KCrash Handler]
#6  QGraphicsLayoutItem::setParentLayoutItem (this=0x234cfc0, parent=0x0) at graphicsview/qgraphicslayoutitem.cpp:856
#7  0x00007f8ea0addcdf in SystemTray::CompactLayout::removeItem (this=0x1c054f0, item=0x234cfc0) at ../../../../../plasma/generic/applets/systemtray/ui/compactlayout.cpp:127
#8  0x00007f8ea0ae1bc7 in SystemTray::TaskArea::addWidgetForTask (this=0x1c8a230, task=0x4033e80) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:280
#9  0x00007f8ea0ae2926 in SystemTray::TaskArea::addTask (this=0x1c8a230, task=<optimized out>) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:196
#10 0x00007f8ea0ae3124 in SystemTray::TaskArea::qt_metacall (this=0x1c8a230, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fffce0c9c50) at ./taskarea.moc:89
#11 0x00007f8eb9a96eba in QMetaObject::activate (sender=0x14ec760, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fffce0c9c50) at kernel/qobject.cpp:3278
#12 0x00007f8ea0ac58c2 in SystemTray::Manager::taskChanged (this=<optimized out>, _t1=0x4033e80) at ./manager.moc:106
#13 0x00007f8ea0ac5c24 in SystemTray::Manager::qt_metacall (this=0x14ec760, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fffce0c9d60) at ./manager.moc:84
#14 0x00007f8eb9a96eba in QMetaObject::activate (sender=0x4033e80, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fffce0c9d60) at kernel/qobject.cpp:3278
#15 0x00007f8ea0ac645f in SystemTray::Task::changed (this=<optimized out>, _t1=0x4033e80) at ./task.moc:112
#16 0x00007f8ea0ac6731 in SystemTray::Task::widgetDeleted (this=0x4033e80) at ../../../../../plasma/generic/applets/systemtray/core/task.cpp:129
#17 0x00007f8ea0ac69f4 in SystemTray::Task::qt_metacall (this=0x4033e80, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fffce0c9ef0) at ./task.moc:100
#18 0x00007f8ea0ac7430 in SystemTray::FdoTask::qt_metacall (this=0x4033e80, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fffce0c9ef0) at ./fdotask.moc:67
#19 0x00007f8eb9a96eba in QMetaObject::activate (sender=0x234cfa0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fffce0c9ef0) at kernel/qobject.cpp:3278
#20 0x00007f8eb9a9736f in QObject::destroyed (this=<optimized out>, _t1=0x234cfa0) at .moc/release-shared/moc_qobject.cpp:149
#21 0x00007f8eb9a9aef7 in QObject::~QObject (this=0x234cfa0, __in_chrg=<optimized out>) at kernel/qobject.cpp:843
#22 0x00007f8eb9456548 in ~QGraphicsObject (this=0x234cfa0, __in_chrg=<optimized out>) at ../../include/QtGui/../../src/gui/graphicsview/qgraphicsitem.h:547
#23 QGraphicsWidget::~QGraphicsWidget (this=0x234cfa0, __in_chrg=<optimized out>) at graphicsview/qgraphicswidget.cpp:232
#24 0x00007f8ea0ac7709 in SystemTray::FdoGraphicsWidget::~FdoGraphicsWidget (this=0x234cfa0, __in_chrg=<optimized out>) at ../../../../../plasma/generic/applets/systemtray/protocols/fdo/fdographicswidget.cpp:77
#25 0x00007f8eb9406dc6 in QGraphicsItem::~QGraphicsItem (this=0x1790890, __in_chrg=<optimized out>) at graphicsview/qgraphicsitem.cpp:1488
#26 0x00007f8eb9456540 in ~QGraphicsObject (this=0x1790880, __in_chrg=<optimized out>) at ../../include/QtGui/../../src/gui/graphicsview/qgraphicsitem.h:547
#27 QGraphicsWidget::~QGraphicsWidget (this=0x1790880, __in_chrg=<optimized out>) at graphicsview/qgraphicswidget.cpp:232
#28 0x00007f8ea0ae0439 in SystemTray::TaskArea::~TaskArea (this=0x1790880, __in_chrg=<optimized out>) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:147
#29 0x00007f8ea0ad8b4d in SystemTray::Applet::~Applet (this=0x14eeb80, __in_chrg=<optimized out>) at ../../../../../plasma/generic/applets/systemtray/ui/applet.cpp:145
#30 0x00007f8ea0ad8d59 in SystemTray::Applet::~Applet (this=0x14eeb80, __in_chrg=<optimized out>) at ../../../../../plasma/generic/applets/systemtray/ui/applet.cpp:163
#31 0x00007f8ebc3d65ef in qDeleteAll<QList<Plasma::Applet*>::const_iterator> (end=<optimized out>, begin=<optimized out>) at /usr/include/qt4/QtCore/qalgorithms.h:322
#32 qDeleteAll<QList<Plasma::Applet*> > (c=...) at /usr/include/qt4/QtCore/qalgorithms.h:330
#33 ~ContainmentPrivate (this=0x14ecd40, __in_chrg=<optimized out>) at ../../plasma/private/containment_p.h:70
#34 Plasma::Containment::~Containment (this=0x1392bd0, __in_chrg=<optimized out>) at ../../plasma/containment.cpp:148
#35 0x00007f8ea19fcb39 in Panel::~Panel (this=0x1392bd0, __in_chrg=<optimized out>) at ../../../../../plasma/desktop/containments/panel/panel.cpp:129
#36 0x00007f8ebc3e99f7 in qDeleteAll<QList<Plasma::Containment*>::const_iterator> (end=<optimized out>, begin=<optimized out>) at /usr/include/qt4/QtCore/qalgorithms.h:322
#37 qDeleteAll<QList<Plasma::Containment*> > (c=...) at /usr/include/qt4/QtCore/qalgorithms.h:330
#38 Plasma::CoronaPrivate::~CoronaPrivate (this=0x1260020, __in_chrg=<optimized out>) at ../../plasma/corona.cpp:805
#39 0x00007f8ebc3e9c24 in Plasma::Corona::~Corona (this=0x1093030, __in_chrg=<optimized out>) at ../../plasma/corona.cpp:82
#40 0x00007f8ebcbbb829 in DesktopCorona::~DesktopCorona (this=0x1093030, __in_chrg=<optimized out>) at ../../../../plasma/desktop/shell/desktopcorona.cpp:73
#41 0x00007f8ebcbdd146 in PlasmaApp::cleanup (this=0x1052ed0) at ../../../../plasma/desktop/shell/plasmaapp.cpp:381
#42 0x00007f8ebcbdd280 in PlasmaApp::quit (this=<optimized out>) at ../../../../plasma/desktop/shell/plasmaapp.cpp:342
#43 0x00007f8ebcbf22c8 in PlasmaAppAdaptor::qt_metacall (this=0x10fd8f0, _c=QMetaObject::InvokeMetaMethod, _id=6, _a=0x7fffce0ca540) at appadaptor.moc:124
#44 0x00007f8eb9ddb0e9 in QDBusConnectionPrivate::deliverCall (this=0x105ffd0, object=0x10fd8f0, msg=..., metaTypes=..., slotIdx=10) at qdbusintegrator.cpp:942
#45 0x00007f8eb9ddc19b in QDBusConnectionPrivate::activateCall (this=0x105ffd0, object=0x10fd8f0, flags=337, msg=...) at qdbusintegrator.cpp:845
#46 0x00007f8eb9ddca3b in QDBusConnectionPrivate::activateObject (this=0x105ffd0, node=..., msg=..., pathStartPos=<optimized out>) at qdbusintegrator.cpp:1402
#47 0x00007f8eb9ddcbf8 in QDBusActivateObjectEvent::placeMetaCall (this=0x4000df0) at qdbusintegrator.cpp:1524
#48 0x00007f8eb9a9aa5e in QObject::event (this=0x1052ed0, e=<optimized out>) at kernel/qobject.cpp:1217
#49 0x00007f8eb8e382d4 in QApplication::event (this=0x1052ed0, e=0x4000df0) at kernel/qapplication.cpp:2527
#50 0x00007f8eb8e34424 in notify_helper (e=0x4000df0, receiver=0x1052ed0, this=0x1074a40) at kernel/qapplication.cpp:4486
#51 QApplicationPrivate::notify_helper (this=0x1074a40, receiver=0x1052ed0, e=0x4000df0) at kernel/qapplication.cpp:4458
#52 0x00007f8eb8e39291 in QApplication::notify (this=0x1052ed0, receiver=0x1052ed0, e=0x4000df0) at kernel/qapplication.cpp:4365
#53 0x00007f8eba732126 in KApplication::notify (this=0x1052ed0, receiver=0x1052ed0, event=0x4000df0) at ../../kdeui/kernel/kapplication.cpp:311
#54 0x00007f8eb9a83afc in QCoreApplication::notifyInternal (this=0x1052ed0, receiver=0x1052ed0, event=0x4000df0) at kernel/qcoreapplication.cpp:787
#55 0x00007f8eb9a8751f in sendEvent (event=0x4000df0, receiver=0x1052ed0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#56 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0xfae430) at kernel/qcoreapplication.cpp:1428
#57 0x00007f8eb9aaea73 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#58 postEventSourceDispatch (s=<optimized out>) at kernel/qeventdispatcher_glib.cpp:277
#59 0x00007f8eb0e47a5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#60 0x00007f8eb0e48258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#61 0x00007f8eb0e48429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#62 0x00007f8eb9aaeed6 in QEventDispatcherGlib::processEvents (this=0xfaff40, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#63 0x00007f8eb8edc07e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#64 0x00007f8eb9a82cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#65 0x00007f8eb9a82ef7 in QEventLoop::exec (this=0x7fffce0cb060, flags=...) at kernel/qeventloop.cpp:201
#66 0x00007f8eb9a87789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#67 0x00007f8ebcbc71a3 in kdemain (argc=1, argv=0x7fffce0cb448) at ../../../../plasma/desktop/shell/main.cpp:120
#68 0x00007f8ebc80830d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fffce0cb448, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffce0cb438) at libc-start.c:226
#69 0x0000000000400671 in _start ()

Possible duplicates by query: bug 286371, bug 286296, bug 285763, bug 285590, bug 283937.

Reported using DrKonqi