Application: kwin (4.5.1 (KDE 4.5.1))
KDE Platform Version: 4.5.1 (KDE 4.5.1)
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:

IDA Pro was running under wine. For some reason the window no longer appeared in the taskbar. I tried to alt tab to it but couldn't find it. When I stopped alt-tabbing, Kwin crashed.

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
[KCrash Handler]
#6  KWin::WindowPaintData::WindowPaintData (this=0x7fff1dc0d2c0, w=0x1) at ../../../kwin/lib/kwineffects.cpp:76
#7  0x00007f553829569b in KWin::CoverSwitchEffect::paintFrontWindow (this=0x27be690, frontWindow=0x1, width=1680, leftWindows=3, rightWindows=4, reflectedWindow=false) at ../../../kwin/effects/coverswitch/coverswitch.cpp:785
#8  0x00007f5538295d63 in KWin::CoverSwitchEffect::paintScene (this=0x27be690, frontWindow=<value optimized out>, leftWindows=..., rightWindows=..., reflectedWindows=<value optimized out>) at ../../../kwin/effects/coverswitch/coverswitch.cpp:459
#9  0x00007f5538296405 in KWin::CoverSwitchEffect::paintScreen (this=0x27be690, mask=<value optimized out>, region=<value optimized out>, data=<value optimized out>) at ../../../kwin/effects/coverswitch/coverswitch.cpp:311
#10 0x00007f5551164a7e in KWin::EffectsHandlerImpl::paintScreen (this=0x25e8de0, mask=32, region=) at ../../kwin/effects.cpp:168
#11 0x00007f554f72791f in KWin::Effect::paintScreen (this=<value optimized out>, mask=32, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#12 0x00007f5551164a7e in KWin::EffectsHandlerImpl::paintScreen (this=0x25e8de0, mask=32, region=) at ../../kwin/effects.cpp:168
#13 0x00007f553828efe1 in KWin::ZoomEffect::paintScreen (this=<value optimized out>, mask=32, region=) at ../../../kwin/effects/zoom/zoom.cpp:73
#14 0x00007f5551164a7e in KWin::EffectsHandlerImpl::paintScreen (this=0x25e8de0, mask=32, region=) at ../../kwin/effects.cpp:168
#15 0x00007f555114c195 in KWin::Scene::paintScreen (this=0x26435c0, mask=0x7fff1dc0d91c, region=0x7fff1dc0da40) at ../../kwin/scene.cpp:137
#16 0x00007f555115d450 in KWin::SceneOpenGL::paint (this=0x26435c0, damage=<value optimized out>, toplevels=<value optimized out>) at ../../kwin/scene_opengl.cpp:754
#17 0x00007f55511472a7 in KWin::Workspace::performCompositing (this=<value optimized out>) at ../../kwin/composite.cpp:454
#18 0x00007f55510c87dd in KWin::Workspace::qt_metacall (this=0x240d990, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff1dc0dbf0) at ./workspace.moc:583
#19 0x00007f554d622b27 in QMetaObject::activate (sender=0x240de58, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x3) at kernel/qobject.cpp:3280
#20 0x00007f554d61c8f9 in QObject::event (this=0x240de58, e=0x1) at kernel/qobject.cpp:1183
#21 0x00007f554c754fdc in QApplicationPrivate::notify_helper (this=0x2443190, receiver=0x240de58, e=0x7fff1dc0e340) at kernel/qapplication.cpp:4396
#22 0x00007f554c75aaed in QApplication::notify (this=0x7fff1dc0e730, receiver=0x240de58, e=0x7fff1dc0e340) at kernel/qapplication.cpp:4277
#23 0x00007f55508f1156 in KApplication::notify (this=0x7fff1dc0e730, receiver=0x240de58, event=0x7fff1dc0e340) at ../../kdeui/kernel/kapplication.cpp:310
#24 0x00007f554d60acdc in QCoreApplication::notifyInternal (this=0x7fff1dc0e730, receiver=0x240de58, event=0x7fff1dc0e340) at kernel/qcoreapplication.cpp:732
#25 0x00007f554d63a6f2 in sendEvent (this=0x2443ba0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#26 QTimerInfoList::activateTimers (this=0x2443ba0) at kernel/qeventdispatcher_unix.cpp:602
#27 0x00007f554d63a82c in QEventDispatcherUNIX::processEvents (this=0x241ee60, flags=) at kernel/qeventdispatcher_unix.cpp:923
#28 0x00007f554c808c2f in QEventDispatcherX11::processEvents (this=<value optimized out>, flags=) at kernel/qeventdispatcher_x11.cpp:152
#29 0x00007f554d609a02 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#30 0x00007f554d609dec in QEventLoop::exec (this=0x7fff1dc0e670, flags=) at kernel/qeventloop.cpp:201
#31 0x00007f554d60debb in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1009
#32 0x00007f55510e4f9d in kdemain (argc=<value optimized out>, argv=<value optimized out>) at ../../kwin/main.cpp:531
#33 0x00007f5550d2dd8e in __libc_start_main (main=<value optimized out>, argc=<value optimized out>, ubp_av=<value optimized out>, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=0x7fff1dc0ed38) at libc-start.c:226
#34 0x0000000000400669 in _start ()

Possible duplicates by query: bug 255467, bug 242134.

Reported using DrKonqi