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:
Well this very bad. Every time I watch or play flash content kwin crashes after a while. It always crashes when I change the volume.

The crash can be reproduced every time.

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
[Current thread is 1 (Thread 0xb76d5720 (LWP 1356))]

Thread 3 (Thread 0xb2770b70 (LWP 1367)):
#0  0x047b2d41 in clock_gettime (clock_id=1, tp=0xb2770050) at ../sysdeps/unix/clock_gettime.c:116
#1  0x049d7dd8 in do_gettime () at tools/qelapsedtimer_unix.cpp:123
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#3  0x04aa5525 in updateCurrentTime (this=0xb3d00498, flags=..., timeout=0x0) at kernel/qeventdispatcher_unix.cpp:339
#4  QEventDispatcherUNIXPrivate::doSelect (this=0xb3d00498, flags=..., timeout=0x0) at kernel/qeventdispatcher_unix.cpp:182
#5  0x04aa6326 in QEventDispatcherUNIX::processEvents (this=0xb3d00488, flags=...) at kernel/qeventdispatcher_unix.cpp:919
#6  0x04a75289 in QEventLoop::processEvents (this=0xb2770280, flags=...) at kernel/qeventloop.cpp:149
#7  0x04a75522 in QEventLoop::exec (this=0xb2770280, flags=...) at kernel/qeventloop.cpp:201
#8  0x0497f2a0 in QThread::exec (this=0x9513db0) at thread/qthread.cpp:492
#9  0x04a56fdb in QInotifyFileSystemWatcherEngine::run (this=0x9513db0) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x04981da2 in QThreadPrivate::start (arg=0x9513db0) at thread/qthread_unix.cpp:320
#11 0x01942e99 in start_thread (arg=0xb2770b70) at pthread_create.c:304
#12 0x00b3273e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 2 (Thread 0xb1f6fb70 (LWP 1368)):
#0  0x00bf6416 in __kernel_vsyscall ()
#1  0x0194748c in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:169
#2  0x00b403fd in __pthread_cond_wait (cond=0xe972b0, mutex=0xe97298) at forward.c:139
#3  0x00d7e817 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0xe921c0) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#4  0x00d7e851 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=0xe921c0) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#5  0x01942e99 in start_thread (arg=0xb1f6fb70) at pthread_create.c:304
#6  0x00b3273e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 1 (Thread 0xb76d5720 (LWP 1356)):
[KCrash Handler]
#7  0x03c392e0 in intel_region_buffer () from /usr/lib/dri/i965_dri.so
#8  0x03c2ace2 in intelClearWithBlit () from /usr/lib/dri/i965_dri.so
#9  0x03c2d4c0 in ?? () from /usr/lib/dri/i965_dri.so
#10 0x03cf3512 in _mesa_Clear () from /usr/lib/dri/libdricore.so
#11 0x001d984b in KWin::SceneOpenGL::paintBackground (this=0x8ef0638, region=...) at ../../kwin/scene_opengl.cpp:921
#12 0x001d0562 in KWin::Scene::paintGenericScreen (this=0x8ef0638, orig_mask=32) at ../../kwin/scene.cpp:188
#13 0x001d9a31 in KWin::SceneOpenGL::paintGenericScreen (this=0x8ef0638, mask=32, data=...) at ../../kwin/scene_opengl.cpp:909
#14 0x001cd7c0 in KWin::Scene::finalPaintScreen (this=0x8ef0638, mask=32, region=..., data=...) at ../../kwin/scene.cpp:178
#15 0x001ef0fc in KWin::EffectsHandlerImpl::paintScreen (this=0x920a748, mask=32, region=..., data=...) at ../../kwin/effects.cpp:173
#16 0x03f3f0e9 in KWin::StartupFeedbackEffect::paintScreen (this=0x92f7f00, mask=32, region=..., data=...) at ../../../kwin/effects/startupfeedback/startupfeedback.cpp:166
#17 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x920a748, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#18 0x00958256 in KWin::Effect::paintScreen (this=0x92946b0, mask=32, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#19 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x920a748, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#20 0x03ee107f in KWin::LogoutEffect::paintScreen (this=0x929f328, mask=32, region=..., data=...) at ../../../kwin/effects/logout/logout.cpp:207
#21 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x920a748, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#22 0x03efcb10 in KWin::ShadowEffect::paintScreen (this=0x93feb60, mask=32, region=..., data=...) at ../../../kwin/effects/shadow/shadow.cpp:189
#23 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x920a748, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#24 0x03f11013 in KWin::BlurEffect::paintScreen (this=0x9257fb8, mask=32, region=..., data=...) at ../../../kwin/effects/blur/blur.cpp:230
#25 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x920a748, mask=0, region=..., data=...) at ../../kwin/effects.cpp:169
#26 0x03ee5e6f in KWin::PresentWindowsEffect::paintScreen (this=0x930c370, mask=0, region=..., data=...) at ../../../kwin/effects/presentwindows/presentwindows.cpp:205
#27 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x920a748, mask=0, region=..., data=...) at ../../kwin/effects.cpp:169
#28 0x00958256 in KWin::Effect::paintScreen (this=0x9381298, mask=0, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#29 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x920a748, mask=0, region=..., data=...) at ../../kwin/effects.cpp:169
#30 0x00958256 in KWin::Effect::paintScreen (this=0x9492d38, mask=0, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#31 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x920a748, mask=0, region=..., data=...) at ../../kwin/effects.cpp:169
#32 0x00958256 in KWin::Effect::paintScreen (this=0x9415860, mask=0, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#33 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x920a748, mask=0, region=..., data=...) at ../../kwin/effects.cpp:169
#34 0x00958256 in KWin::Effect::paintScreen (this=0x92c1668, mask=0, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#35 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x920a748, mask=0, region=..., data=...) at ../../kwin/effects.cpp:169
#36 0x00958256 in KWin::Effect::paintScreen (this=0x923a1c8, mask=0, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#37 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x920a748, mask=0, region=..., data=...) at ../../kwin/effects.cpp:169
#38 0x03ecc7e9 in KWin::DesktopGridEffect::paintScreen (this=0x9444cc0, mask=0, region=..., data=...) at ../../../kwin/effects/desktopgrid/desktopgrid.cpp:155
#39 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x920a748, mask=0, region=..., data=...) at ../../kwin/effects.cpp:169
#40 0x03f03ce2 in KWin::SlideEffect::paintScreen (this=0x93d6848, mask=0, region=..., data=...) at ../../../kwin/effects/slide/slide.cpp:86
#41 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x920a748, mask=0, region=..., data=...) at ../../kwin/effects.cpp:169
#42 0x03ec5799 in KWin::BoxSwitchEffect::paintScreen (this=0x93ae140, mask=0, region=..., data=...) at ../../../kwin/effects/boxswitch/boxswitch.cpp:143
#43 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x920a748, mask=0, region=..., data=...) at ../../kwin/effects.cpp:169
#44 0x03f1fbcc in KWin::CubeEffect::paintScreen (this=0x92ef818, mask=0, region=..., data=...) at ../../../kwin/effects/cube/cube.cpp:698
#45 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x920a748, mask=0, region=..., data=...) at ../../kwin/effects.cpp:169
#46 0x00958256 in KWin::Effect::paintScreen (this=0x93a7d60, mask=0, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#47 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x920a748, mask=0, region=..., data=...) at ../../kwin/effects.cpp:169
#48 0x00958256 in KWin::Effect::paintScreen (this=0x948e7f8, mask=0, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#49 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x920a748, mask=0, region=..., data=...) at ../../kwin/effects.cpp:169
#50 0x00958256 in KWin::Effect::paintScreen (this=0x93298e8, mask=0, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#51 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x920a748, mask=0, region=..., data=...) at ../../kwin/effects.cpp:169
#52 0x03f18a0c in KWin::CoverSwitchEffect::paintScreen (this=0x937ada0, mask=0, region=..., data=...) at ../../../kwin/effects/coverswitch/coverswitch.cpp:126
#53 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x920a748, mask=0, region=..., data=...) at ../../kwin/effects.cpp:169
#54 0x00958256 in KWin::Effect::paintScreen (this=0x925b408, mask=0, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#55 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x920a748, mask=0, region=..., data=...) at ../../kwin/effects.cpp:169
#56 0x00958256 in KWin::Effect::paintScreen (this=0x941ed78, mask=0, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#57 0x001ef172 in KWin::EffectsHandlerImpl::paintScreen (this=0x920a748, mask=0, region=..., data=...) at ../../kwin/effects.cpp:169
#58 0x001ce98c in KWin::Scene::paintScreen (this=0x8ef0638, mask=0xbfbff4b8, region=0xbfbff540) at ../../kwin/scene.cpp:137
#59 0x001e5962 in KWin::SceneOpenGL::paint (this=0x8ef0638, damage=..., toplevels=...) at ../../kwin/scene_opengl.cpp:772
#60 0x001ca886 in KWin::Workspace::performCompositing (this=0x91f26b8) at ../../kwin/composite.cpp:448
#61 0x04a8b214 in QObject::event (this=0x91f26b8, e=0xbfbffa6c) at kernel/qobject.cpp:1190
#62 0x04e2dd24 in QApplicationPrivate::notify_helper (this=0x8df9668, receiver=0x91f26b8, e=0xbfbffa6c) at kernel/qapplication.cpp:4462
#63 0x04e328ce in QApplication::notify (this=0xbfbffd84, receiver=0x91f26b8, e=0xbfbffa6c) at kernel/qapplication.cpp:3862
#64 0x004e33ca in KApplication::notify (this=0xbfbffd84, receiver=0x91f26b8, event=0xbfbffa6c) at ../../kdeui/kernel/kapplication.cpp:311
#65 0x00159abf in KWin::Application::notify (this=0xbfbffd84, o=0x91f26b8, e=0xbfbffa6c) at ../../kwin/main.cpp:376
#66 0x04a760bb in QCoreApplication::notifyInternal (this=0xbfbffd84, receiver=0x91f26b8, event=0xbfbffa6c) at kernel/qcoreapplication.cpp:731
#67 0x04aa61e4 in sendEvent (this=0x8e01858) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#68 QTimerInfoList::activateTimers (this=0x8e01858) at kernel/qeventdispatcher_unix.cpp:604
#69 0x04aa6338 in QEventDispatcherUNIX::processEvents (this=0x8db7aa8, flags=...) at kernel/qeventdispatcher_unix.cpp:923
#70 0x04ee27ea in QEventDispatcherX11::processEvents (this=0x8db7aa8, flags=...) at kernel/qeventdispatcher_x11.cpp:152
#71 0x04a75289 in QEventLoop::processEvents (this=0xbfbffcc4, flags=...) at kernel/qeventloop.cpp:149
#72 0x04a75522 in QEventLoop::exec (this=0xbfbffcc4, flags=...) at kernel/qeventloop.cpp:201
#73 0x04a79ecc in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#74 0x04e2b8e7 in QApplication::exec () at kernel/qapplication.cpp:3736
#75 0x0015c5b2 in kdemain (argc=3, argv=0xbfc00004) at ../../kwin/main.cpp:542
#76 0x080485bb in main (argc=3, argv=0xbfc00004) at kwin_dummy.cpp:3

Possible duplicates by query: bug 272484, bug 272331, bug 272323, bug 272304, bug 272201.

Reported using DrKonqi