Application: kwin (4.4.4 (KDE 4.4.4))
KDE Platform Version: 4.4.4 (KDE 4.4.4)
Qt Version: 4.6.3
Operating System: Linux 2.6.32-trunk-686 i686
Distribution: Debian GNU/Linux testing (squeeze)

-- Information about the crash:
During fast changing between windows, Kwin suddenly crashed.

 -- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
[KCrash Handler]
#6  0xb6f4073f in WindowPaintData (this=0xbfe30340, w=0x98a6129) at ../../../kwin/lib/kwineffects.cpp:76
#7  0xb1db0147 in KWin::CoverSwitchEffect::paintFrontWindow (this=0x930aed0, frontWindow=0x98a6129, width=1366, leftWindows=0, rightWindows=1, reflectedWindow=false)
    at ../../../kwin/effects/coverswitch/coverswitch.cpp:785
#8  0xb1db0868 in KWin::CoverSwitchEffect::paintScene (this=0x930aed0, frontWindow=0x98a6129, leftWindows=..., rightWindows=..., reflectedWindows=false)
    at ../../../kwin/effects/coverswitch/coverswitch.cpp:433
#9  0xb1db0ffe in KWin::CoverSwitchEffect::paintScreen (this=0x930aed0, mask=32, region=..., data=...) at ../../../kwin/effects/coverswitch/coverswitch.cpp:311
#10 0xb78428b0 in KWin::EffectsHandlerImpl::paintScreen (this=0x92622a0, mask=32, region=..., data=...) at ../../kwin/effects.cpp:122
#11 0xb1da33fa in KWin::SlideEffect::paintScreen (this=0x936c528, mask=32, region=..., data=...) at ../../../kwin/effects/slide/slide.cpp:86
#12 0xb78428b0 in KWin::EffectsHandlerImpl::paintScreen (this=0x92622a0, mask=32, region=..., data=...) at ../../kwin/effects.cpp:122
#13 0xb6f3d426 in KWin::Effect::paintScreen (this=0x92f3460, mask=32, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#14 0xb78428b0 in KWin::EffectsHandlerImpl::paintScreen (this=0x92622a0, mask=32, region=..., data=...) at ../../kwin/effects.cpp:122
#15 0xb1dad043 in KWin::ZoomEffect::paintScreen (this=0x9228fe8, mask=32, region=..., data=...) at ../../../kwin/effects/zoom/zoom.cpp:73
#16 0xb78428b0 in KWin::EffectsHandlerImpl::paintScreen (this=0x92622a0, mask=32, region=..., data=...) at ../../kwin/effects.cpp:122
#17 0xb782b184 in KWin::Scene::paintScreen (this=0x9261138, mask=0xbfe30a18, region=0xbfe30ae4) at ../../kwin/scene.cpp:134
#18 0xb783c0ba in KWin::SceneOpenGL::paint (this=0x9261138, damage=..., toplevels=...) at ../../kwin/scene_opengl.cpp:748
#19 0xb78250b4 in KWin::Workspace::performCompositing (this=0x925a930) at ../../kwin/composite.cpp:424
#20 0xb779e866 in KWin::Workspace::qt_metacall (this=0x925a930, _c=QMetaObject::InvokeMetaMethod, _id=173, _a=0xbfe30c0c) at ./workspace.moc:535
#21 0xb5ed680a in QMetaObject::metacall (object=0x925a930, cl=QMetaObject::ReadProperty, idx=173, argv=0xbfe30c0c) at kernel/qmetaobject.cpp:237
#22 0xb5ee51db in QMetaObject::activate (sender=0x925abb8, m=0xb5fe5724, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3295
#23 0xb5f377e7 in QTimer::timeout (this=0x925abb8) at .moc/release-shared/moc_qtimer.cpp:134
#24 0xb5eed0be in QTimer::timerEvent (this=0x925abb8, e=0xbfe31160) at kernel/qtimer.cpp:271
#25 0xb5ee1c84 in QObject::event (this=0x925abb8, e=0xbfe30340) at kernel/qobject.cpp:1212
#26 0xb61bb5cc in QApplicationPrivate::notify_helper (this=0x91990f8, receiver=0x925abb8, e=0xbfe31160) at kernel/qapplication.cpp:4302
#27 0xb61c215e in QApplication::notify (this=0xbfe314d8, receiver=0x925abb8, e=0xbfe31160) at kernel/qapplication.cpp:3706
#28 0xb7438b4a in KApplication::notify (this=0xbfe314d8, receiver=0x925abb8, event=0xbfe31160) at ../../kdeui/kernel/kapplication.cpp:302
#29 0xb77b9b3f in KWin::Application::notify (this=0xbfe314d8, o=0x925abb8, e=0xbfe31160) at ../../kwin/main.cpp:370
#30 0xb5ed152b in QCoreApplication::notifyInternal (this=0xbfe314d8, receiver=0x925abb8, event=0xbfe31160) at kernel/qcoreapplication.cpp:726
#31 0xb5f007b6 in QCoreApplication::sendEvent (this=0x919bebc) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#32 QTimerInfoList::activateTimers (this=0x919bebc) at kernel/qeventdispatcher_unix.cpp:603
#33 0xb5efd3d7 in timerSourceDispatch (source=0x919c300) at kernel/qeventdispatcher_glib.cpp:184
#34 idleTimerSourceDispatch (source=0x919c300) at kernel/qeventdispatcher_glib.cpp:231
#35 0xb435a2f5 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#36 0xb435dfd8 in ?? () from /lib/libglib-2.0.so.0
#37 0xb435e1b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#38 0xb5efd095 in QEventDispatcherGlib::processEvents (this=0x9183550, flags=...) at kernel/qeventdispatcher_glib.cpp:412
#39 0xb6279f45 in QGuiEventDispatcherGlib::processEvents (this=0x9183550, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#40 0xb5ecfb49 in QEventLoop::processEvents (this=0xbfe31424, flags=) at kernel/qeventloop.cpp:149
#41 0xb5ecff9a in QEventLoop::exec (this=0xbfe31424, flags=...) at kernel/qeventloop.cpp:201
#42 0xb5ed51cf in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1003
#43 0xb61bb667 in QApplication::exec () at kernel/qapplication.cpp:3581
#44 0xb77bb650 in kdemain (argc=3, argv=0xbfe316e4) at ../../kwin/main.cpp:526
#45 0x0804860b in main (argc=3, argv=0xbfe316e4) at kwin_dummy.cpp:3

This bug may be a duplicate of or related to bug 203487.

Possible duplicates by query: bug 242134, bug 240155, bug 234051, bug 232813, bug 227971.

Reported using DrKonqi