Bug 264592

Application: kontact (4.4.9)
KDE Platform Version: 4.6.00 (4.6.0)
Qt Version: 4.7.0
Operating System: Linux 2.6.35-25-generic x86_64
Distribution: Ubuntu 10.10

-- Information about the crash:
- What I was doing when the application crashed:
I'm using a manually saved KDE session with Kontact on virtual desktop #4. After I logged in I was asked if I want to start Kontact though it was already running. I clicked "yes" and switched to virtual desktop #4. I saw two instances of Kontact and closed one. Then I focussed the second one and selected kmailpart.

- Unusual behavior I noticed:
1. Kontact starts twice during startup
2. Kontact crashes when switching to kmailpart

-- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f1fd06cb780 (LWP 2518))]

Thread 2 (Thread 0x7f1fa2b5f700 (LWP 2814)):
#0  0x00007f1fcd654380 in pthread_mutex_unlock (mutex=0x3d0f4b8) at forward.c:184
#1  0x00007f1fc6cb7ffc in ?? () from /lib/libglib-2.0.so.0
#2  0x00007f1fc6cb845c in g_main_context_iteration () from /lib/libglib-2.0.so.0
#3  0x00007f1fcdd7c1e6 in QEventDispatcherGlib::processEvents (this=0x398a3d0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:417
#4  0x00007f1fcdd4ea02 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#5  0x00007f1fcdd4edec in QEventLoop::exec (this=0x7f1fa2b5ed90, flags=) at kernel/qeventloop.cpp:201
#6  0x00007f1fcdc592fd in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:490
#7  0x00007f1fcdd2e5f8 in QInotifyFileSystemWatcherEngine::run (this=0x3d0e9e0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f1fcdc5c27e in QThreadPrivate::start (arg=0x3d0e9e0) at thread/qthread_unix.cpp:266
#9  0x00007f1fc7176971 in start_thread (arg=<value optimized out>) at pthread_create.c:304
#10 0x00007f1fcd64492d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f1fd06cb780 (LWP 2518)):
[KCrash Handler]
#6  begin (this=0x32d2b30) at /usr/include/qt4/QtCore/qlist.h:97
#7  begin (this=0x32d2b30) at /usr/include/qt4/QtCore/qlist.h:255
#8  KMMainWidget::initializeFilterActions (this=0x32d2b30) at ../../kmail/kmmainwidget.cpp:4770
#9  0x00007f1fb20f77d1 in KMailPart::guiActivateEvent (this=0x30cb8c0, e=0x7fff25a38b00) at ../../kmail/kmail_part.cpp:183
#10 0x00007f1fcdd61c3c in QObject::event (this=0x30cb8c0, e=<value optimized out>) at kernel/qobject.cpp:1250
#11 0x00007f1fce731fdc in QApplicationPrivate::notify_helper (this=0x258c640, receiver=0x30cb8c0, e=0x7fff25a38b00) at kernel/qapplication.cpp:4396
#12 0x00007f1fce737aed in QApplication::notify (this=0x7fff25a3b080, receiver=0x30cb8c0, e=0x7fff25a38b00) at kernel/qapplication.cpp:4277
#13 0x00007f1fcf4c1a36 in KApplication::notify (this=0x7fff25a3b080, receiver=0x30cb8c0, event=0x7fff25a38b00) at ../../kdeui/kernel/kapplication.cpp:311
#14 0x00007f1fcdd4fcdc in QCoreApplication::notifyInternal (this=0x7fff25a3b080, receiver=0x30cb8c0, event=0x7fff25a38b00) at kernel/qcoreapplication.cpp:732
#15 0x00007f1fcd335dca in sendEvent (this=0x2f66580, part=0x3a117d0) at /usr/include/qt4/QtCore/qcoreapplication.h:215
#16 KParts::MainWindow::createGUI (this=0x2f66580, part=0x3a117d0) at ../../kparts/mainwindow.cpp:101
#17 0x00007f1fd02ee184 in Kontact::MainWindow::selectPlugin (this=0x2f66580, plugin=0x305ef10) at ../../../kontact/src/mainwindow.cpp:851
#18 0x00007f1fd02f1eb2 in Kontact::MainWindow::qt_metacall (this=0x2f66580, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff25a39130) at ./mainwindow.moc:113
#19 0x00007f1fcdd67b27 in QMetaObject::activate (sender=0x2de7260, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x1) at kernel/qobject.cpp:3280
#20 0x00007f1fd02f370f in Kontact::SidePaneBase::pluginSelected (this=0x7fff25a38110, _t1=0x305ef10) at ./sidepanebase.moc:90
#21 0x00007f1fd02f3760 in Kontact::SidePaneBase::qt_metacall (this=0x2de7260, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff25a392a0) at ./sidepanebase.moc:77
#22 0x00007f1fd02f3978 in Kontact::IconSidePane::qt_metacall (this=0x7fff25a38110, _c=57036528, _id=41520385, _a=0x1) at ./iconsidepane.moc:145
#23 0x00007f1fcdd67b27 in QMetaObject::activate (sender=0x2f475f0, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x1) at kernel/qobject.cpp:3280
#24 0x00007f1fd02f3a1f in Kontact::Navigator::pluginActivated (this=0x7fff25a38110, _t1=0x305ef10) at ./iconsidepane.moc:96
#25 0x00007f1fd02f3ab0 in Kontact::Navigator::slotCurrentChanged (this=0x2f475f0, current=...) at ../../../kontact/src/iconsidepane.cpp:475
#26 0x00007f1fd02f41e1 in Kontact::Navigator::qt_metacall (this=0x2f475f0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff25a39420) at ./iconsidepane.moc:82
#27 0x00007f1fcdd67b27 in QMetaObject::activate (sender=0x2f18280, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x1) at kernel/qobject.cpp:3280
#28 0x00007f1fcecd861a in QItemSelectionModel::currentChanged (this=0x7fff25a38110, _t1=<value optimized out>, _t2=<value optimized out>) at .moc/release-shared/moc_qitemselectionmodel.cpp:159
#29 0x00007f1fcecd8762 in QItemSelectionModel::setCurrentIndex (this=0x2f18280, index=..., command=<value optimized out>) at itemviews/qitemselectionmodel.cpp:1156
#30 0x00007f1fcec88144 in QAbstractItemView::mousePressEvent (this=0x2f475f0, event=<value optimized out>) at itemviews/qabstractitemview.cpp:1657
#31 0x00007f1fce788035 in QWidget::event (this=0x2f475f0, event=0x7fff25a3a370) at kernel/qwidget.cpp:8183
#32 0x00007f1fceb535e6 in QFrame::event (this=0x2f475f0, e=0x7fff25a3a370) at widgets/qframe.cpp:557
#33 0x00007f1fcec8ca8b in QAbstractItemView::viewportEvent (this=0x2f475f0, event=0x7fff25a3a370) at itemviews/qabstractitemview.cpp:1619
#34 0x00007f1fcdd4f507 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=0x2f33980, event=0x7fff25a3a370) at kernel/qcoreapplication.cpp:847
#35 0x00007f1fce731fac in QApplicationPrivate::notify_helper (this=0x258c640, receiver=0x2f33980, e=0x7fff25a3a370) at kernel/qapplication.cpp:4392
#36 0x00007f1fce73830e in QApplication::notify (this=0x7fff25a3b080, receiver=0x2f33980, e=0x7fff25a3a370) at kernel/qapplication.cpp:3959
#37 0x00007f1fcf4c1a36 in KApplication::notify (this=0x7fff25a3b080, receiver=0x2f33980, event=0x7fff25a3a370) at ../../kdeui/kernel/kapplication.cpp:311
#38 0x00007f1fcdd4fcdc in QCoreApplication::notifyInternal (this=0x7fff25a3b080, receiver=0x2f33980, event=0x7fff25a3a370) at kernel/qcoreapplication.cpp:732
#39 0x00007f1fce736dbe in sendEvent (receiver=0x2f33980, event=0x7fff25a3a370, alienWidget=0x2f33980, nativeWidget=0x2f66580, buttonDown=<value optimized out>, lastMouseReceiver=<value optimized out>, spontaneous=true) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#40 QApplicationPrivate::sendMouseEvent (receiver=0x2f33980, event=0x7fff25a3a370, alienWidget=0x2f33980, nativeWidget=0x2f66580, buttonDown=<value optimized out>, lastMouseReceiver=<value optimized out>, spontaneous=true) at kernel/qapplication.cpp:3058
#41 0x00007f1fce7ba345 in QETWidget::translateMouseEvent (this=0x2f66580, event=<value optimized out>) at kernel/qapplication_x11.cpp:4403
#42 0x00007f1fce7b8c5c in QApplication::x11ProcessEvent (this=<value optimized out>, event=0x7fff25a3ac90) at kernel/qapplication_x11.cpp:3536
#43 0x00007f1fce7e50e2 in x11EventSourceDispatch (s=0x2595240, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:146
#44 0x00007f1fc6cb4342 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#45 0x00007f1fc6cb82a8 in ?? () from /lib/libglib-2.0.so.0
#46 0x00007f1fc6cb845c in g_main_context_iteration () from /lib/libglib-2.0.so.0
#47 0x00007f1fcdd7c193 in QEventDispatcherGlib::processEvents (this=0x255de90, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:415
#48 0x00007f1fce7e4a4e in QGuiEventDispatcherGlib::processEvents (this=0x7fff25a38110, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#49 0x00007f1fcdd4ea02 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#50 0x00007f1fcdd4edec in QEventLoop::exec (this=0x7fff25a3afc0, flags=) at kernel/qeventloop.cpp:201
#51 0x00007f1fcdd52ebb in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1009
#52 0x0000000000403b4e in main (argc=<value optimized out>, argv=<value optimized out>) at ../../../kontact/src/main.cpp:224

This bug may be a duplicate of or related to bug 180669.

Possible duplicates by query: bug 230079.

Reported using DrKonqi