Application: kwin (4.5.4 (KDE 4.5.4))
KDE Platform Version: 4.5.4 (KDE 4.5.4)
Qt Version: 4.7.1
Operating System: Linux 2.6.37-rc8-dell x86_64
Distribution (Platform): Gentoo Packages

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

I have open windows game in low resolution with the lastest kernel 2.6.37 and open source drivers, after alt tab.

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
The current source language is "auto; currently asm".
[KCrash Handler]
#6  0x00007f0fad063cae in WindowPaintData (this=0x7fff413156b0, w=0x7f0faba1e6c1) at /var/tmp/portage/kde-base/kwin-4.5.4/work/kwin-4.5.4/kwin/lib/kwineffects.cpp:76
#7  0x00007f0f99e23abb in KWin::CoverSwitchEffect::paintFrontWindow (this=0x3076f30, frontWindow=0x7f0faba1e6c1, width=640, leftWindows=0, rightWindows=0, reflectedWindow=true)
    at /var/tmp/portage/kde-base/kwin-4.5.4/work/kwin-4.5.4/kwin/effects/coverswitch/coverswitch.cpp:785
#8  0x00007f0f99e24144 in KWin::CoverSwitchEffect::paintScene (this=0x3076f30, frontWindow=<value optimized out>, leftWindows=..., rightWindows=..., reflectedWindows=<value optimized out>)
    at /var/tmp/portage/kde-base/kwin-4.5.4/work/kwin-4.5.4/kwin/effects/coverswitch/coverswitch.cpp:459
#9  0x00007f0f99e24e53 in KWin::CoverSwitchEffect::paintScreen (this=0x3076f30, mask=<value optimized out>, region=<value optimized out>, data=<value optimized out>)
    at /var/tmp/portage/kde-base/kwin-4.5.4/work/kwin-4.5.4/kwin/effects/coverswitch/coverswitch.cpp:252
#10 0x00007f0faeb622fd in KWin::EffectsHandlerImpl::paintScreen (this=0x300a070, mask=32, region=) at /var/tmp/portage/kde-base/kwin-4.5.4/work/kwin-4.5.4/kwin/effects.cpp:168
#11 0x00007f0fad060ccf in KWin::Effect::paintScreen (this=<value optimized out>, mask=32, region=<value optimized out>, data=...)
    at /var/tmp/portage/kde-base/kwin-4.5.4/work/kwin-4.5.4/kwin/lib/kwineffects.cpp:227
#12 0x00007f0faeb622fd in KWin::EffectsHandlerImpl::paintScreen (this=0x300a070, mask=32, region=) at /var/tmp/portage/kde-base/kwin-4.5.4/work/kwin-4.5.4/kwin/effects.cpp:168
#13 0x00007f0fad060ccf in KWin::Effect::paintScreen (this=<value optimized out>, mask=32, region=<value optimized out>, data=...)
    at /var/tmp/portage/kde-base/kwin-4.5.4/work/kwin-4.5.4/kwin/lib/kwineffects.cpp:227
#14 0x00007f0faeb622fd in KWin::EffectsHandlerImpl::paintScreen (this=0x300a070, mask=32, region=) at /var/tmp/portage/kde-base/kwin-4.5.4/work/kwin-4.5.4/kwin/effects.cpp:168
#15 0x00007f0f99e1cbb1 in KWin::ZoomEffect::paintScreen (this=<value optimized out>, mask=32, region=) at /var/tmp/portage/kde-base/kwin-4.5.4/work/kwin-4.5.4/kwin/effects/zoom/zoom.cpp:73
#16 0x00007f0faeb622fd in KWin::EffectsHandlerImpl::paintScreen (this=0x300a070, mask=32, region=) at /var/tmp/portage/kde-base/kwin-4.5.4/work/kwin-4.5.4/kwin/effects.cpp:168
#17 0x00007f0faeb47bd5 in KWin::Scene::paintScreen (this=0x2de0da0, mask=0x7fff41315dac, region=0x7fff41315ed0) at /var/tmp/portage/kde-base/kwin-4.5.4/work/kwin-4.5.4/kwin/scene.cpp:137
#18 0x00007f0faeb5935f in KWin::SceneOpenGL::paint (this=0x2de0da0, damage=<value optimized out>, toplevels=<value optimized out>)
    at /var/tmp/portage/kde-base/kwin-4.5.4/work/kwin-4.5.4/kwin/scene_opengl.cpp:758
#19 0x00007f0faeb422ff in KWin::Workspace::performCompositing (this=<value optimized out>) at /var/tmp/portage/kde-base/kwin-4.5.4/work/kwin-4.5.4/kwin/composite.cpp:454
#20 0x00007f0faeaba88d in KWin::Workspace::qt_metacall (this=0x24f6d10, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff41316080)
    at /var/tmp/portage/kde-base/kwin-4.5.4/work/kwin-4.5.4_build/kwin/workspace.moc:583
#21 0x00007f0faa2282bf in QMetaObject::activate (sender=0x24f71d8, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x0) at kernel/qobject.cpp:3272
#22 0x00007f0faa221c29 in QObject::event (this=0x24f71d8, e=0x7f0faba1e6c1) at kernel/qobject.cpp:1175
#23 0x00007f0faaeab62c in QApplicationPrivate::notify_helper (this=0x23f6800, receiver=0x24f71d8, e=0x7fff413167c0) at kernel/qapplication.cpp:4445
#24 0x00007f0faaeb0c0d in QApplication::notify (this=0x7fff41316bb0, receiver=0x24f71d8, e=0x7fff413167c0) at kernel/qapplication.cpp:4324
#25 0x00007f0fae2dc176 in KApplication::notify (this=0x7fff41316bb0, receiver=0x24f71d8, event=0x7fff413167c0)
    at /var/tmp/portage/kde-base/kdelibs-4.5.4/work/kdelibs-4.5.4/kdeui/kernel/kapplication.cpp:310
#26 0x00007f0faa20e14b in QCoreApplication::notifyInternal (this=0x7fff41316bb0, receiver=0x24f71d8, event=0x7fff413167c0) at kernel/qcoreapplication.cpp:732
#27 0x00007f0faa24213a in QCoreApplication::sendEvent (this=0x23f7210) at kernel/qcoreapplication.h:215
#28 QTimerInfoList::activateTimers (this=0x23f7210) at kernel/qeventdispatcher_unix.cpp:603
#29 0x00007f0faa24237c in QEventDispatcherUNIX::processEvents (this=0x23f6790, flags=) at kernel/qeventdispatcher_unix.cpp:922
#30 0x00007f0faaf6fd5d in QEventDispatcherX11::processEvents (this=<value optimized out>, flags=) at kernel/qeventdispatcher_x11.cpp:152
#31 0x00007f0faa20ca72 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#32 0x00007f0faa20cf14 in QEventLoop::exec (this=0x7fff41316af0, flags=) at kernel/qeventloop.cpp:201
#33 0x00007f0faa2116fb in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1009
#34 0x00007f0faead914d in kdemain (argc=<value optimized out>, argv=<value optimized out>) at /var/tmp/portage/kde-base/kwin-4.5.4/work/kwin-4.5.4/kwin/main.cpp:531
#35 0x00007f0fae746bbd 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=0x7fff413171b8) at libc-start.c:226
#36 0x00000000004007a9 in _start () at ../sysdeps/x86_64/elf/start.S:113

Possible duplicates by query: bug 255467, bug 253870, bug 251415, bug 244689, bug 242134.

Reported using DrKonqi