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-server x86_64
Distribution: Ubuntu 11.04

-- Information about the crash:
- What I was doing when the application crashed: screen saver was active
Application: KWin (kwin), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f7f505a77a0 (LWP 14654))]

Thread 3 (Thread 0x7f7f35342700 (LWP 14660)):
#0  0x00007f7f4fdee143 in select () at ../sysdeps/unix/syscall-template.S:82
#1  0x00007f7f4c1cc32c in qt_safe_select (nfds=18, fdread=0xaa5de0, fdwrite=0xaa6078, fdexcept=0xaa6310, orig_timeout=<value optimized out>) at kernel/qcore_unix.cpp:82
#2  0x00007f7f4c1d13d0 in QEventDispatcherUNIXPrivate::doSelect (this=0xaa5c20, flags=..., timeout=0x0) at kernel/qeventdispatcher_unix.cpp:219
#3  0x00007f7f4c1d204a in QEventDispatcherUNIX::processEvents (this=0x1d5f200, flags=...) at kernel/qeventdispatcher_unix.cpp:919
#4  0x00007f7f4c1a3882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f7f4c1a3abc in QEventLoop::exec (this=0x7f7f35341db0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f7f4c0ba924 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:492
#7  0x00007f7f4c185c2f in QInotifyFileSystemWatcherEngine::run (this=0xa8b3d0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f7f4c0bd175 in QThreadPrivate::start (arg=0xa8b3d0) at thread/qthread_unix.cpp:320
#9  0x00007f7f467b0d8c in start_thread (arg=0x7f7f35342700) at pthread_create.c:304
#10 0x00007f7f4fdf604d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f7f34b41700 (LWP 14661)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f7f4ec552a2 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x7f7f4ef6e180) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007f7f4ec552d9 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=0x7f7f4ef7c254) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007f7f467b0d8c in start_thread (arg=0x7f7f34b41700) at pthread_create.c:304
#4  0x00007f7f4fdf604d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f7f505a77a0 (LWP 14654)):
[KCrash Handler]
#6  intel_region_buffer (intel=0xb82700, region=0x0, flag=2) at intel_regions.c:514
#7  0x00007f7f380816c2 in intelClearWithBlit (ctx=0xb82700, mask=2) at intel_blit.c:262
#8  0x00007f7f38083d2a in intelClear (ctx=0xb82700, mask=2) at intel_clear.c:177
#9  0x00007f7f5016cce7 in KWin::SceneOpenGL::paintBackground (this=<value optimized out>, region=<value optimized out>) at ../../kwin/scene_opengl.cpp:921
#10 0x00007f7f5016488f in KWin::Scene::paintGenericScreen (this=0xb77530, orig_mask=40) at ../../kwin/scene.cpp:188
#11 0x00007f7f50161c7a in KWin::Scene::finalPaintScreen (this=0xb77530, mask=40, region=<value optimized out>, data=<value optimized out>) at ../../kwin/scene.cpp:178
#12 0x00007f7f5017ff19 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=40, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:173
#13 0x00007f7f3712b5a6 in KWin::StartupFeedbackEffect::paintScreen (this=0x1ee5190, mask=40, region=<value optimized out>, data=...) at ../../../kwin/effects/startupfeedback/startupfeedback.cpp:166
#14 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=40, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#15 0x00007f7f4e23fa18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=40, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#16 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=40, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#17 0x00007f7f370d244d in KWin::LogoutEffect::paintScreen (this=0x1ee75d0, mask=40, region=..., data=...) at ../../../kwin/effects/logout/logout.cpp:207
#18 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=40, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#19 0x00007f7f370ed57b in KWin::ShadowEffect::paintScreen (this=0x1e905a0, mask=40, region=..., data=...) at ../../../kwin/effects/shadow/shadow.cpp:189
#20 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=40, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#21 0x00007f7f370ffe68 in KWin::BlurEffect::paintScreen (this=<value optimized out>, mask=40, region=..., data=...) at ../../../kwin/effects/blur/blur.cpp:230
#22 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#23 0x00007f7f370d6fbd in KWin::PresentWindowsEffect::paintScreen (this=0x20d2300, mask=8, region=..., data=...) at ../../../kwin/effects/presentwindows/presentwindows.cpp:205
#24 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#25 0x00007f7f4e23fa18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#26 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#27 0x00007f7f4e23fa18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#28 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#29 0x00007f7f4e23fa18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#30 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#31 0x00007f7f4e23fa18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#32 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#33 0x00007f7f4e23fa18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#34 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#35 0x00007f7f4e23fa18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#36 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#37 0x00007f7f4e23fa18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#38 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#39 0x00007f7f4e23fa18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#40 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#41 0x00007f7f370be365 in KWin::DesktopGridEffect::paintScreen (this=0x1d300f0, mask=8, region=..., data=...) at ../../../kwin/effects/desktopgrid/desktopgrid.cpp:155
#42 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#43 0x00007f7f4e23fa18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#44 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#45 0x00007f7f370b7bad in KWin::BoxSwitchEffect::paintScreen (this=0x20365f0, mask=8, region=..., data=...) at ../../../kwin/effects/boxswitch/boxswitch.cpp:143
#46 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#47 0x00007f7f3710e256 in KWin::CubeEffect::paintScreen (this=<value optimized out>, mask=8, region=..., data=...) at ../../../kwin/effects/cube/cube.cpp:698
#48 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#49 0x00007f7f4e23fa18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#50 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#51 0x00007f7f4e23fa18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#52 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#53 0x00007f7f4e23fa18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#54 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#55 0x00007f7f37106d86 in KWin::CoverSwitchEffect::paintScreen (this=0x20a7c90, mask=8, region=..., data=...) at ../../../kwin/effects/coverswitch/coverswitch.cpp:126
#56 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#57 0x00007f7f4e23fa18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#58 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#59 0x00007f7f4e23fa18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#60 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#61 0x00007f7f37125e65 in KWin::MouseMarkEffect::paintScreen (this=0x1d1d820, mask=8, region=<value optimized out>, data=...) at ../../../kwin/effects/mousemark/mousemark.cpp:78
#62 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#63 0x00007f7f370fd39b in KWin::ZoomEffect::paintScreen (this=0x20a8660, mask=8, region=..., data=...) at ../../../kwin/effects/zoom/zoom.cpp:341
#64 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#65 0x00007f7f501640af in KWin::Scene::paintScreen (this=0xb77530, mask=0x7fff113f0dcc, region=0x7fff113f0e90) at ../../kwin/scene.cpp:137
#66 0x00007f7f50177ef3 in KWin::SceneOpenGL::paint (this=0xb77530, damage=..., toplevels=<value optimized out>) at ../../kwin/scene_opengl.cpp:772
#67 0x00007f7f5015f396 in KWin::Workspace::performCompositing (this=0xea4230) at ../../kwin/composite.cpp:448
#68 0x00007f7f4c1b81c9 in QObject::event (this=0xea4230, e=<value optimized out>) at kernel/qobject.cpp:1190
#69 0x00007f7f4b5659e4 in QApplicationPrivate::notify_helper (this=0xa36a40, receiver=0xea4230, e=0x7fff113f1620) at kernel/qapplication.cpp:4462
#70 0x00007f7f4b56a3aa in QApplication::notify (this=<value optimized out>, receiver=0xea4230, e=0x7fff113f1620) at kernel/qapplication.cpp:4341
#71 0x00007f7f4f8f1866 in KApplication::notify (this=0x7fff113f1a20, receiver=0xea4230, event=0x7fff113f1620) at ../../kdeui/kernel/kapplication.cpp:311
#72 0x00007f7f4c1a449c in QCoreApplication::notifyInternal (this=0x7fff113f1a20, receiver=0xea4230, event=0x7fff113f1620) at kernel/qcoreapplication.cpp:731
#73 0x00007f7f4c1d1f12 in sendEvent (this=0xa37600) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#74 QTimerInfoList::activateTimers (this=0xa37600) at kernel/qeventdispatcher_unix.cpp:604
#75 0x00007f7f4c1d205b in QEventDispatcherUNIX::processEvents (this=0x9db340, flags=...) at kernel/qeventdispatcher_unix.cpp:923
#76 0x00007f7f4b60dc0c in QEventDispatcherX11::processEvents (this=0x9db340, flags=...) at kernel/qeventdispatcher_x11.cpp:152
#77 0x00007f7f4c1a3882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#78 0x00007f7f4c1a3abc in QEventLoop::exec (this=0x7fff113f1960, flags=...) at kernel/qeventloop.cpp:201
#79 0x00007f7f4c1a7ecb in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#80 0x00007f7f500fd1ec in kdemain (argc=<value optimized out>, argv=0x7fff113f20b8) at ../../kwin/main.cpp:542
#81 0x00007f7f4fd2eeff in __libc_start_main (main=0x400740 <main(int, char**)>, argc=3, ubp_av=0x7fff113f20b8, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=0x7fff113f20a8) at libc-start.c:226
#82 0x0000000000400669 in _start ()

The crash can be reproduced some of the time.

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f7f505a77a0 (LWP 14654))]

Thread 3 (Thread 0x7f7f35342700 (LWP 14660)):
#0  0x00007f7f4fdee143 in select () at ../sysdeps/unix/syscall-template.S:82
#1  0x00007f7f4c1cc32c in qt_safe_select (nfds=18, fdread=0xaa5de0, fdwrite=0xaa6078, fdexcept=0xaa6310, orig_timeout=<value optimized out>) at kernel/qcore_unix.cpp:82
#2  0x00007f7f4c1d13d0 in QEventDispatcherUNIXPrivate::doSelect (this=0xaa5c20, flags=..., timeout=0x0) at kernel/qeventdispatcher_unix.cpp:219
#3  0x00007f7f4c1d204a in QEventDispatcherUNIX::processEvents (this=0x1d5f200, flags=...) at kernel/qeventdispatcher_unix.cpp:919
#4  0x00007f7f4c1a3882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f7f4c1a3abc in QEventLoop::exec (this=0x7f7f35341db0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f7f4c0ba924 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:492
#7  0x00007f7f4c185c2f in QInotifyFileSystemWatcherEngine::run (this=0xa8b3d0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f7f4c0bd175 in QThreadPrivate::start (arg=0xa8b3d0) at thread/qthread_unix.cpp:320
#9  0x00007f7f467b0d8c in start_thread (arg=0x7f7f35342700) at pthread_create.c:304
#10 0x00007f7f4fdf604d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f7f34b41700 (LWP 14661)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f7f4ec552a2 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x7f7f4ef6e180) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007f7f4ec552d9 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=0x7f7f4ef7c254) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007f7f467b0d8c in start_thread (arg=0x7f7f34b41700) at pthread_create.c:304
#4  0x00007f7f4fdf604d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f7f505a77a0 (LWP 14654)):
[KCrash Handler]
#6  intel_region_buffer (intel=0xb82700, region=0x0, flag=2) at intel_regions.c:514
#7  0x00007f7f380816c2 in intelClearWithBlit (ctx=0xb82700, mask=2) at intel_blit.c:262
#8  0x00007f7f38083d2a in intelClear (ctx=0xb82700, mask=2) at intel_clear.c:177
#9  0x00007f7f5016cce7 in KWin::SceneOpenGL::paintBackground (this=<value optimized out>, region=<value optimized out>) at ../../kwin/scene_opengl.cpp:921
#10 0x00007f7f5016488f in KWin::Scene::paintGenericScreen (this=0xb77530, orig_mask=40) at ../../kwin/scene.cpp:188
#11 0x00007f7f50161c7a in KWin::Scene::finalPaintScreen (this=0xb77530, mask=40, region=<value optimized out>, data=<value optimized out>) at ../../kwin/scene.cpp:178
#12 0x00007f7f5017ff19 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=40, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:173
#13 0x00007f7f3712b5a6 in KWin::StartupFeedbackEffect::paintScreen (this=0x1ee5190, mask=40, region=<value optimized out>, data=...) at ../../../kwin/effects/startupfeedback/startupfeedback.cpp:166
#14 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=40, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#15 0x00007f7f4e23fa18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=40, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#16 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=40, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#17 0x00007f7f370d244d in KWin::LogoutEffect::paintScreen (this=0x1ee75d0, mask=40, region=..., data=...) at ../../../kwin/effects/logout/logout.cpp:207
#18 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=40, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#19 0x00007f7f370ed57b in KWin::ShadowEffect::paintScreen (this=0x1e905a0, mask=40, region=..., data=...) at ../../../kwin/effects/shadow/shadow.cpp:189
#20 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=40, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#21 0x00007f7f370ffe68 in KWin::BlurEffect::paintScreen (this=<value optimized out>, mask=40, region=..., data=...) at ../../../kwin/effects/blur/blur.cpp:230
#22 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#23 0x00007f7f370d6fbd in KWin::PresentWindowsEffect::paintScreen (this=0x20d2300, mask=8, region=..., data=...) at ../../../kwin/effects/presentwindows/presentwindows.cpp:205
#24 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#25 0x00007f7f4e23fa18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#26 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#27 0x00007f7f4e23fa18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#28 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#29 0x00007f7f4e23fa18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#30 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#31 0x00007f7f4e23fa18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#32 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#33 0x00007f7f4e23fa18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#34 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#35 0x00007f7f4e23fa18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#36 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#37 0x00007f7f4e23fa18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#38 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#39 0x00007f7f4e23fa18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#40 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#41 0x00007f7f370be365 in KWin::DesktopGridEffect::paintScreen (this=0x1d300f0, mask=8, region=..., data=...) at ../../../kwin/effects/desktopgrid/desktopgrid.cpp:155
#42 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#43 0x00007f7f4e23fa18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#44 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#45 0x00007f7f370b7bad in KWin::BoxSwitchEffect::paintScreen (this=0x20365f0, mask=8, region=..., data=...) at ../../../kwin/effects/boxswitch/boxswitch.cpp:143
#46 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#47 0x00007f7f3710e256 in KWin::CubeEffect::paintScreen (this=<value optimized out>, mask=8, region=..., data=...) at ../../../kwin/effects/cube/cube.cpp:698
#48 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#49 0x00007f7f4e23fa18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#50 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#51 0x00007f7f4e23fa18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#52 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#53 0x00007f7f4e23fa18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#54 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#55 0x00007f7f37106d86 in KWin::CoverSwitchEffect::paintScreen (this=0x20a7c90, mask=8, region=..., data=...) at ../../../kwin/effects/coverswitch/coverswitch.cpp:126
#56 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#57 0x00007f7f4e23fa18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#58 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#59 0x00007f7f4e23fa18 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/lib/kwineffects.cpp:227
#60 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#61 0x00007f7f37125e65 in KWin::MouseMarkEffect::paintScreen (this=0x1d1d820, mask=8, region=<value optimized out>, data=...) at ../../../kwin/effects/mousemark/mousemark.cpp:78
#62 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#63 0x00007f7f370fd39b in KWin::ZoomEffect::paintScreen (this=0x20a8660, mask=8, region=..., data=...) at ../../../kwin/effects/zoom/zoom.cpp:341
#64 0x00007f7f5017ffa3 in KWin::EffectsHandlerImpl::paintScreen (this=0x1caca00, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:169
#65 0x00007f7f501640af in KWin::Scene::paintScreen (this=0xb77530, mask=0x7fff113f0dcc, region=0x7fff113f0e90) at ../../kwin/scene.cpp:137
#66 0x00007f7f50177ef3 in KWin::SceneOpenGL::paint (this=0xb77530, damage=..., toplevels=<value optimized out>) at ../../kwin/scene_opengl.cpp:772
#67 0x00007f7f5015f396 in KWin::Workspace::performCompositing (this=0xea4230) at ../../kwin/composite.cpp:448
#68 0x00007f7f4c1b81c9 in QObject::event (this=0xea4230, e=<value optimized out>) at kernel/qobject.cpp:1190
#69 0x00007f7f4b5659e4 in QApplicationPrivate::notify_helper (this=0xa36a40, receiver=0xea4230, e=0x7fff113f1620) at kernel/qapplication.cpp:4462
#70 0x00007f7f4b56a3aa in QApplication::notify (this=<value optimized out>, receiver=0xea4230, e=0x7fff113f1620) at kernel/qapplication.cpp:4341
#71 0x00007f7f4f8f1866 in KApplication::notify (this=0x7fff113f1a20, receiver=0xea4230, event=0x7fff113f1620) at ../../kdeui/kernel/kapplication.cpp:311
#72 0x00007f7f4c1a449c in QCoreApplication::notifyInternal (this=0x7fff113f1a20, receiver=0xea4230, event=0x7fff113f1620) at kernel/qcoreapplication.cpp:731
#73 0x00007f7f4c1d1f12 in sendEvent (this=0xa37600) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#74 QTimerInfoList::activateTimers (this=0xa37600) at kernel/qeventdispatcher_unix.cpp:604
#75 0x00007f7f4c1d205b in QEventDispatcherUNIX::processEvents (this=0x9db340, flags=...) at kernel/qeventdispatcher_unix.cpp:923
#76 0x00007f7f4b60dc0c in QEventDispatcherX11::processEvents (this=0x9db340, flags=...) at kernel/qeventdispatcher_x11.cpp:152
#77 0x00007f7f4c1a3882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#78 0x00007f7f4c1a3abc in QEventLoop::exec (this=0x7fff113f1960, flags=...) at kernel/qeventloop.cpp:201
#79 0x00007f7f4c1a7ecb in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#80 0x00007f7f500fd1ec in kdemain (argc=<value optimized out>, argv=0x7fff113f20b8) at ../../kwin/main.cpp:542
#81 0x00007f7f4fd2eeff in __libc_start_main (main=0x400740 <main(int, char**)>, argc=3, ubp_av=0x7fff113f20b8, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=0x7fff113f20a8) at libc-start.c:226
#82 0x0000000000400669 in _start ()

Possible duplicates by query: bug 273078, bug 273067, bug 273066, bug 272846, bug 272829.

Reported using DrKonqi