Application: kwin (4.6.2 (4.6.2))
KDE Platform Version: 4.6.2 (4.6.2)
Qt Version: 4.7.2
Operating System: Linux 2.6.38-8-generic i686
Distribution: Ubuntu 11.04

-- Information about the crash:
- What I was doing when the application crashed:
	Watch flash video in firefox 4 with flash plugin. When i closed fullscreen mode, the task bar not appears.

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
[Current thread is 1 (Thread 0xb771d720 (LWP 1604))]

Thread 3 (Thread 0xb24d6b70 (LWP 1609)):
#0  0x04cdfd41 in clock_gettime () from /lib/i386-linux-gnu/librt.so.1
#1  0x05af9dd8 in do_gettime () at tools/qelapsedtimer_unix.cpp:123
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#3  0x05bc64f2 in updateCurrentTime (this=0xa0df528, tm=...) at kernel/qeventdispatcher_unix.cpp:339
#4  QTimerInfoList::timerWait (this=0xa0df528, tm=...) at kernel/qeventdispatcher_unix.cpp:442
#5  0x05bc83a3 in QEventDispatcherUNIX::processEvents (this=0xa10d100, flags=...) at kernel/qeventdispatcher_unix.cpp:906
#6  0x05b97289 in QEventLoop::processEvents (this=0xb24d6280, flags=...) at kernel/qeventloop.cpp:149
#7  0x05b97522 in QEventLoop::exec (this=0xb24d6280, flags=...) at kernel/qeventloop.cpp:201
#8  0x05aa12a0 in QThread::exec (this=0xa0455d8) at thread/qthread.cpp:492
#9  0x05b78fdb in QInotifyFileSystemWatcherEngine::run (this=0xa0455d8) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x05aa3da2 in QThreadPrivate::start (arg=0xa0455d8) at thread/qthread_unix.cpp:320
#11 0x0343ae99 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#12 0x00de773e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 2 (Thread 0xb1cd5b70 (LWP 1610)):
#0  0x00d01416 in __kernel_vsyscall ()
#1  0x0343f48c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0x00df53fd in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0x00ae3817 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0xbf71c0) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#4  0x00ae3851 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=0xbf71c0) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#5  0x0343ae99 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#6  0x00de773e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 1 (Thread 0xb771d720 (LWP 1604)):
[KCrash Handler]
#7  intel_region_buffer (intel=0x9af2460, region=0x0, flag=2) at intel_regions.c:514
#8  0x03b64742 in intelClearWithBlit (ctx=0x9af2460, mask=2) at intel_blit.c:262
#9  0x03b5d670 in intelClear (ctx=0x9af2460, mask=2) at intel_clear.c:177
#10 0x071e8512 in _mesa_Clear (mask=<value optimized out>) at main/clear.c:241
#11 0x001d984b in KWin::SceneOpenGL::paintBackground (this=0x9af2420, region=...) at ../../kwin/scene_opengl.cpp:921
#12 0x001d0562 in KWin::Scene::paintGenericScreen (this=0x9af2420, orig_mask=32) at ../../kwin/scene.cpp:188
#13 0x001d9a31 in KWin::SceneOpenGL::paintGenericScreen (this=0x9af2420, mask=32, data=...) at ../../kwin/scene_opengl.cpp:909
#14 0x001cd7c0 in KWin::Scene::finalPaintScreen (this=0x9af2420, mask=32, region=..., data=...) at ../../kwin/scene.cpp:178
#15 0x001ef0fc in KWin::EffectsHandlerImpl::paintScreen (this=0x9e1b600, mask=32, region=..., data=...) at ../../kwin/effects.cpp:173
#16 0x03c3d0e9 in KWin::StartupFeedbackEffect::paintScreen (this=0x9fb5730, mask=32, region=..., data=...) at ../../../kwin/effects/startupfeedback/startupfeedback.cpp:166
#17 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x9e1b600, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#18 0x00553256 in KWin::Effect::paintScreen (this=0x9f54508, mask=32, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#19 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x9e1b600, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#20 0x03bdf07f in KWin::LogoutEffect::paintScreen (this=0x9f7dbd0, mask=32, region=..., data=...) at ../../../kwin/effects/logout/logout.cpp:207
#21 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x9e1b600, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#22 0x03bfab10 in KWin::ShadowEffect::paintScreen (this=0xa00b188, mask=32, region=..., data=...) at ../../../kwin/effects/shadow/shadow.cpp:189
#23 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x9e1b600, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#24 0x03c0f013 in KWin::BlurEffect::paintScreen (this=0x9e6e520, mask=32, region=..., data=...) at ../../../kwin/effects/blur/blur.cpp:230
#25 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x9e1b600, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#26 0x03be3e6f in KWin::PresentWindowsEffect::paintScreen (this=0x9fa3ce8, mask=32, region=..., data=...) at ../../../kwin/effects/presentwindows/presentwindows.cpp:205
#27 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x9e1b600, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#28 0x00553256 in KWin::Effect::paintScreen (this=0x9ed6430, mask=32, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#29 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x9e1b600, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#30 0x00553256 in KWin::Effect::paintScreen (this=0x9f36020, mask=32, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#31 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x9e1b600, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#32 0x00553256 in KWin::Effect::paintScreen (this=0x9e6e978, mask=32, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#33 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x9e1b600, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#34 0x00553256 in KWin::Effect::paintScreen (this=0x9ed0cc8, mask=32, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#35 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x9e1b600, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#36 0x00553256 in KWin::Effect::paintScreen (this=0x9e480c0, mask=32, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#37 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x9e1b600, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#38 0x00553256 in KWin::Effect::paintScreen (this=0x9eb9090, mask=32, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#39 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x9e1b600, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#40 0x03c2e202 in KWin::FlipSwitchEffect::paintScreen (this=0x9e49fd8, mask=32, region=..., data=...) at ../../../kwin/effects/flipswitch/flipswitch.cpp:148
#41 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x9e1b600, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#42 0x03bca7e9 in KWin::DesktopGridEffect::paintScreen (this=0xa024248, mask=32, region=..., data=...) at ../../../kwin/effects/desktopgrid/desktopgrid.cpp:155
#43 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x9e1b600, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#44 0x03c01ce2 in KWin::SlideEffect::paintScreen (this=0x9fb4b00, mask=32, region=..., data=...) at ../../../kwin/effects/slide/slide.cpp:86
#45 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x9e1b600, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#46 0x03bc3799 in KWin::BoxSwitchEffect::paintScreen (this=0x9e6fe48, mask=32, region=..., data=...) at ../../../kwin/effects/boxswitch/boxswitch.cpp:143
#47 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x9e1b600, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#48 0x03c1dbcc in KWin::CubeEffect::paintScreen (this=0x9fa45c0, mask=32, region=..., data=...) at ../../../kwin/effects/cube/cube.cpp:698
#49 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x9e1b600, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#50 0x00553256 in KWin::Effect::paintScreen (this=0xa06dc28, mask=32, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#51 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x9e1b600, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#52 0x00553256 in KWin::Effect::paintScreen (this=0xa032a18, mask=32, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#53 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x9e1b600, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#54 0x00553256 in KWin::Effect::paintScreen (this=0x9f35f08, mask=32, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#55 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x9e1b600, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#56 0x00553256 in KWin::Effect::paintScreen (this=0xa024830, mask=32, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#57 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x9e1b600, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#58 0x03c16a0c in KWin::CoverSwitchEffect::paintScreen (this=0x9efeaa0, mask=32, region=..., data=...) at ../../../kwin/effects/coverswitch/coverswitch.cpp:126
#59 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x9e1b600, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#60 0x00553256 in KWin::Effect::paintScreen (this=0x9fe3058, mask=32, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#61 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x9e1b600, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#62 0x00553256 in KWin::Effect::paintScreen (this=0x9e69750, mask=32, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#63 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x9e1b600, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#64 0x00553256 in KWin::Effect::paintScreen (this=0x9f4eae8, mask=32, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#65 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x9e1b600, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#66 0x03c0c0c1 in KWin::ZoomEffect::paintScreen (this=0x9f35da0, mask=32, region=..., data=...) at ../../../kwin/effects/zoom/zoom.cpp:341
#67 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x9e1b600, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#68 0x001ce98c in KWin::Scene::paintScreen (this=0x9af2420, mask=0xbf879e48, region=0xbf879ed0) at ../../kwin/scene.cpp:137
#69 0x001e5962 in KWin::SceneOpenGL::paint (this=0x9af2420, damage=..., toplevels=...) at ../../kwin/scene_opengl.cpp:772
#70 0x001ca886 in KWin::Workspace::performCompositing (this=0xb3dfa980) at ../../kwin/composite.cpp:448
#71 0x05bad214 in QObject::event (this=0xb3dfa980, e=0xbf87a3fc) at kernel/qobject.cpp:1190
#72 0x0121dd24 in QApplicationPrivate::notify_helper (this=0x9a5fb38, receiver=0xb3dfa980, e=0xbf87a3fc) at kernel/qapplication.cpp:4462
#73 0x012228ce in QApplication::notify (this=0xbf87a714, receiver=0xb3dfa980, e=0xbf87a3fc) at kernel/qapplication.cpp:3862
#74 0x007933ca in KApplication::notify (this=0xbf87a714, receiver=0xb3dfa980, event=0xbf87a3fc) at ../../kdeui/kernel/kapplication.cpp:311
#75 0x00159abf in KWin::Application::notify (this=0xbf87a714, o=0xb3dfa980, e=0xbf87a3fc) at ../../kwin/main.cpp:376
#76 0x05b980bb in QCoreApplication::notifyInternal (this=0xbf87a714, receiver=0xb3dfa980, event=0xbf87a3fc) at kernel/qcoreapplication.cpp:731
#77 0x05bc81e4 in sendEvent (this=0x9a604a0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#78 QTimerInfoList::activateTimers (this=0x9a604a0) at kernel/qeventdispatcher_unix.cpp:604
#79 0x05bc8338 in QEventDispatcherUNIX::processEvents (this=0x9a5e4d0, flags=...) at kernel/qeventdispatcher_unix.cpp:923
#80 0x012d27ea in QEventDispatcherX11::processEvents (this=0x9a5e4d0, flags=...) at kernel/qeventdispatcher_x11.cpp:152
#81 0x05b97289 in QEventLoop::processEvents (this=0xbf87a654, flags=...) at kernel/qeventloop.cpp:149
#82 0x05b97522 in QEventLoop::exec (this=0xbf87a654, flags=...) at kernel/qeventloop.cpp:201
#83 0x05b9becc in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#84 0x0121b8e7 in QApplication::exec () at kernel/qapplication.cpp:3736
#85 0x0015c5b2 in kdemain (argc=3, argv=0xbf87a994) at ../../kwin/main.cpp:542
#86 0x080485bb in main (argc=3, argv=0xbf87a994) at kwin_dummy.cpp:3

This bug may be a duplicate of or related to bug 272304.

Possible duplicates by query: bug 272448, bug 272331, bug 272323, bug 272304, bug 272201.

Reported using DrKonqi