Bug 278796

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 2.6.38-10-generic i686
Distribution: Ubuntu 11.04

-- Information about the crash:
- What I was doing when the application crashed:
Activated a screensaver. Ran "test" and after click to return to the setup screen Igot a message
 that kwin had crashed

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
[Current thread is 1 (Thread 0xb7853720 (LWP 1482))]

Thread 3 (Thread 0xb2eeab70 (LWP 1491)):
#0  0x047ffd41 in clock_gettime () from /lib/i386-linux-gnu/librt.so.1
#1  0x031ecdd8 in do_gettime () at tools/qelapsedtimer_unix.cpp:123
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#3  0x032b94f2 in updateCurrentTime (this=0xb2500b08, tm=...) at kernel/qeventdispatcher_unix.cpp:339
#4  QTimerInfoList::timerWait (this=0xb2500b08, tm=...) at kernel/qeventdispatcher_unix.cpp:442
#5  0x032bb3a3 in QEventDispatcherUNIX::processEvents (this=0x8b64670, flags=...) at kernel/qeventdispatcher_unix.cpp:906
#6  0x0328a289 in QEventLoop::processEvents (this=0xb2eea280, flags=...) at kernel/qeventloop.cpp:149
#7  0x0328a522 in QEventLoop::exec (this=0xb2eea280, flags=...) at kernel/qeventloop.cpp:201
#8  0x031942a0 in QThread::exec (this=0x8b04ac0) at thread/qthread.cpp:492
#9  0x0326bfdb in QInotifyFileSystemWatcherEngine::run (this=0x8b04ac0) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x03196da2 in QThreadPrivate::start (arg=0x8b04ac0) at thread/qthread_unix.cpp:320
#11 0x05734e99 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#12 0x0040173e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 2 (Thread 0xb24ffb70 (LWP 1492)):
#0  0x00f60416 in __kernel_vsyscall ()
#1  0x0573948c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0x0040f3fd in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0x00e43817 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0xf571c0) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#4  0x00e43851 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=0xf571c0) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#5  0x05734e99 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#6  0x0040173e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 1 (Thread 0xb7853720 (LWP 1482)):
[KCrash Handler]
#7  intel_region_buffer (intel=0x85237e8, region=0x0, flag=2) at intel_regions.c:514
#8  0x05641ce2 in intelClearWithBlit (ctx=0x85237e8, mask=2) at intel_blit.c:262
#9  0x056444c0 in intelClear (ctx=0x85237e8, mask=2) at intel_clear.c:177
#10 0x04be8512 in _mesa_Clear (mask=<value optimized out>) at main/clear.c:241
#11 0x00c7184b in KWin::SceneOpenGL::paintBackground (this=0x8554208, region=...) at ../../kwin/scene_opengl.cpp:921
#12 0x00c68562 in KWin::Scene::paintGenericScreen (this=0x8554208, orig_mask=32) at ../../kwin/scene.cpp:188
#13 0x00c71a31 in KWin::SceneOpenGL::paintGenericScreen (this=0x8554208, mask=32, data=...) at ../../kwin/scene_opengl.cpp:909
#14 0x00c657c0 in KWin::Scene::finalPaintScreen (this=0x8554208, mask=32, region=..., data=...) at ../../kwin/scene.cpp:178
#15 0x00c870fc in KWin::EffectsHandlerImpl::paintScreen (this=0x86b7c78, mask=32, region=..., data=...) at ../../kwin/effects.cpp:173
#16 0x02c1d0e9 in KWin::StartupFeedbackEffect::paintScreen (this=0x89a8530, mask=32, region=..., data=...) at ../../../kwin/effects/startupfeedback/startupfeedback.cpp:166
#17 0x00c87172 in KWin::EffectsHandlerImpl::paintScreen (this=0x86b7c78, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#18 0x0019f256 in KWin::Effect::paintScreen (this=0x8a5ea08, mask=32, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#19 0x00c87172 in KWin::EffectsHandlerImpl::paintScreen (this=0x86b7c78, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#20 0x02bbf07f in KWin::LogoutEffect::paintScreen (this=0x89d5a10, mask=32, region=..., data=...) at ../../../kwin/effects/logout/logout.cpp:207
#21 0x00c87172 in KWin::EffectsHandlerImpl::paintScreen (this=0x86b7c78, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#22 0x02bdab10 in KWin::ShadowEffect::paintScreen (this=0x8a27fe0, mask=32, region=..., data=...) at ../../../kwin/effects/shadow/shadow.cpp:189
#23 0x00c87172 in KWin::EffectsHandlerImpl::paintScreen (this=0x86b7c78, mask=32, region=..., data=...) at ../../kwin/effects.cpp:169
#24 0x02bef013 in KWin::BlurEffect::paintScreen (this=0x88b7d30, mask=32, region=..., data=...) at ../../../kwin/effects/blur/blur.cpp:230
#25 0x00c87172 in KWin::EffectsHandlerImpl::paintScreen (this=0x86b7c78, mask=0, region=..., data=...) at ../../kwin/effects.cpp:169
#26 0x02bc3e6f in KWin::PresentWindowsEffect::paintScreen (this=0x88bcac0, mask=0, region=..., data=...) at ../../../kwin/effects/presentwindows/presentwindows.cpp:205
#27 0x00c87172 in KWin::EffectsHandlerImpl::paintScreen (this=0x86b7c78, mask=0, region=..., data=...) at ../../kwin/effects.cpp:169
#28 0x0019f256 in KWin::Effect::paintScreen (this=0x8a53630, mask=0, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#29 0x00c87172 in KWin::EffectsHandlerImpl::paintScreen (this=0x86b7c78, mask=0, region=..., data=...) at ../../kwin/effects.cpp:169
#30 0x0019f256 in KWin::Effect::paintScreen (this=0x89d6220, mask=0, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#31 0x00c87172 in KWin::EffectsHandlerImpl::paintScreen (this=0x86b7c78, mask=0, region=..., data=...) at ../../kwin/effects.cpp:169
#32 0x0019f256 in KWin::Effect::paintScreen (this=0x88bc478, mask=0, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#33 0x00c87172 in KWin::EffectsHandlerImpl::paintScreen (this=0x86b7c78, mask=0, region=..., data=...) at ../../kwin/effects.cpp:169
#34 0x0019f256 in KWin::Effect::paintScreen (this=0x8916130, mask=0, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#35 0x00c87172 in KWin::EffectsHandlerImpl::paintScreen (this=0x86b7c78, mask=0, region=..., data=...) at ../../kwin/effects.cpp:169
#36 0x02baa7e9 in KWin::DesktopGridEffect::paintScreen (this=0x88a8370, mask=0, region=..., data=...) at ../../../kwin/effects/desktopgrid/desktopgrid.cpp:155
#37 0x00c87172 in KWin::EffectsHandlerImpl::paintScreen (this=0x86b7c78, mask=0, region=..., data=...) at ../../kwin/effects.cpp:169
#38 0x02ba3799 in KWin::BoxSwitchEffect::paintScreen (this=0x8a5d0d8, mask=0, region=..., data=...) at ../../../kwin/effects/boxswitch/boxswitch.cpp:143
#39 0x00c87172 in KWin::EffectsHandlerImpl::paintScreen (this=0x86b7c78, mask=0, region=..., data=...) at ../../kwin/effects.cpp:169
#40 0x02bfdbcc in KWin::CubeEffect::paintScreen (this=0x89a8910, mask=0, region=..., data=...) at ../../../kwin/effects/cube/cube.cpp:698
#41 0x00c87172 in KWin::EffectsHandlerImpl::paintScreen (this=0x86b7c78, mask=0, region=..., data=...) at ../../kwin/effects.cpp:169
#42 0x0019f256 in KWin::Effect::paintScreen (this=0x894c580, mask=0, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#43 0x00c87172 in KWin::EffectsHandlerImpl::paintScreen (this=0x86b7c78, mask=0, region=..., data=...) at ../../kwin/effects.cpp:169
#44 0x02c06df0 in KWin::CubeSlideEffect::paintScreen (this=0x89c3380, mask=0, region=..., data=...) at ../../../kwin/effects/cube/cubeslide.cpp:111
#45 0x00c87172 in KWin::EffectsHandlerImpl::paintScreen (this=0x86b7c78, mask=0, region=..., data=...) at ../../kwin/effects.cpp:169
#46 0x0019f256 in KWin::Effect::paintScreen (this=0x8a9e1f0, mask=0, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#47 0x00c87172 in KWin::EffectsHandlerImpl::paintScreen (this=0x86b7c78, mask=0, region=..., data=...) at ../../kwin/effects.cpp:169
#48 0x0019f256 in KWin::Effect::paintScreen (this=0x88a11f0, mask=0, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#49 0x00c87172 in KWin::EffectsHandlerImpl::paintScreen (this=0x86b7c78, mask=0, region=..., data=...) at ../../kwin/effects.cpp:169
#50 0x02bf6a0c in KWin::CoverSwitchEffect::paintScreen (this=0x8988e90, mask=0, region=..., data=...) at ../../../kwin/effects/coverswitch/coverswitch.cpp:126
#51 0x00c87172 in KWin::EffectsHandlerImpl::paintScreen (this=0x86b7c78, mask=0, region=..., data=...) at ../../kwin/effects.cpp:169
#52 0x0019f256 in KWin::Effect::paintScreen (this=0x88bb050, mask=0, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#53 0x00c87172 in KWin::EffectsHandlerImpl::paintScreen (this=0x86b7c78, mask=0, region=..., data=...) at ../../kwin/effects.cpp:169
#54 0x0019f256 in KWin::Effect::paintScreen (this=0x89268f0, mask=0, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#55 0x00c87172 in KWin::EffectsHandlerImpl::paintScreen (this=0x86b7c78, mask=0, region=..., data=...) at ../../kwin/effects.cpp:169
#56 0x02bec0c1 in KWin::ZoomEffect::paintScreen (this=0x8989ae8, mask=0, region=..., data=...) at ../../../kwin/effects/zoom/zoom.cpp:341
#57 0x00c87172 in KWin::EffectsHandlerImpl::paintScreen (this=0x86b7c78, mask=0, region=..., data=...) at ../../kwin/effects.cpp:169
#58 0x00c6698c in KWin::Scene::paintScreen (this=0x8554208, mask=0xbf813f98, region=0xbf814020) at ../../kwin/scene.cpp:137
#59 0x00c7d962 in KWin::SceneOpenGL::paint (this=0x8554208, damage=..., toplevels=...) at ../../kwin/scene_opengl.cpp:772
#60 0x00c62886 in KWin::Workspace::performCompositing (this=0x8853730) at ../../kwin/composite.cpp:448
#61 0x032a0214 in QObject::event (this=0x8853730, e=0xbf81454c) at kernel/qobject.cpp:1190
#62 0x05e62d24 in QApplicationPrivate::notify_helper (this=0x845f378, receiver=0x8853730, e=0xbf81454c) at kernel/qapplication.cpp:4462
#63 0x05e678ce in QApplication::notify (this=0xbf814864, receiver=0x8853730, e=0xbf81454c) at kernel/qapplication.cpp:3862
#64 0x006733ca in KApplication::notify (this=0xbf814864, receiver=0x8853730, event=0xbf81454c) at ../../kdeui/kernel/kapplication.cpp:311
#65 0x00bf1abf in KWin::Application::notify (this=0xbf814864, o=0x8853730, e=0xbf81454c) at ../../kwin/main.cpp:376
#66 0x0328b0bb in QCoreApplication::notifyInternal (this=0xbf814864, receiver=0x8853730, event=0xbf81454c) at kernel/qcoreapplication.cpp:731
#67 0x032bb1e4 in sendEvent (this=0x8460250) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#68 QTimerInfoList::activateTimers (this=0x8460250) at kernel/qeventdispatcher_unix.cpp:604
#69 0x032bb338 in QEventDispatcherUNIX::processEvents (this=0x841daa8, flags=...) at kernel/qeventdispatcher_unix.cpp:923
#70 0x05f1a25a in QEventDispatcherX11::processEvents (this=0x841daa8, flags=...) at kernel/qeventdispatcher_x11.cpp:152
#71 0x0328a289 in QEventLoop::processEvents (this=0xbf8147a4, flags=...) at kernel/qeventloop.cpp:149
#72 0x0328a522 in QEventLoop::exec (this=0xbf8147a4, flags=...) at kernel/qeventloop.cpp:201
#73 0x0328eecc in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#74 0x05e608e7 in QApplication::exec () at kernel/qapplication.cpp:3736
#75 0x00bf45b2 in kdemain (argc=3, argv=0xbf814ae4) at ../../kwin/main.cpp:542
#76 0x080485bb in main (argc=3, argv=0xbf814ae4) at kwin_dummy.cpp:3

Possible duplicates by query: bug 278595, bug 278496, bug 278470, bug 278310, bug 277899.

Reported using DrKonqi