Application: kwin (4.4.2 (KDE 4.4.2))
KDE Platform Version: 4.4.2 (KDE 4.4.2)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-22-generic i686
Distribution: Ubuntu 10.04 LTS

-- Information about the crash:
Any activity that moves a window either drops down the top panel or drags a window can cause a crash

The crash can be reproduced every time.

 -- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
[Current thread is 1 (Thread 0xb6226720 (LWP 19989))]

Thread 2 (Thread 0xa8e02b70 (LWP 20005)):
#0  0x006de343 in __i686.get_pc_thunk.bx () from /lib/tls/i686/cmov/libpthread.so.0
#1  0x006e4e61 in pthread_getspecific () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x00a4bf35 in ?? () from /usr/lib/libgthread-2.0.so.0
#3  0x07d5e792 in g_thread_self () from /lib/libglib-2.0.so.0
#4  0x07d384a3 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#5  0x015aa60f in QEventDispatcherGlib::processEvents (this=0x8999e10, flags=...) at kernel/qeventdispatcher_glib.cpp:414
#6  0x0157d059 in QEventLoop::processEvents (this=0xa8e02280, flags=) at kernel/qeventloop.cpp:149
#7  0x0157d4aa in QEventLoop::exec (this=0xa8e02280, flags=...) at kernel/qeventloop.cpp:201
#8  0x014795a8 in QThread::exec (this=0x892a8e8) at thread/qthread.cpp:487
#9  0x0155cc1b in QInotifyFileSystemWatcherEngine::run (this=0x892a8e8) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x0147c32e in QThreadPrivate::start (arg=0x892a8e8) at thread/qthread_unix.cpp:248
#11 0x006df96e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#12 0x00b29a4e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb6226720 (LWP 19989)):
[KCrash Handler]
#6  KWin::WindowQuadList::makeArrays (this=0xbfcc75c4, vertices=0xbfcc748c, texcoords=0xbfcc7488) at ../../../kwin/lib/kwineffects.cpp:780
#7  0x001ceb96 in KWin::SceneOpenGL::Window::renderQuads (this=0x8b69f80, region=..., quads=...) at ../../kwin/scene_opengl.cpp:1647
#8  0x001d41de in KWin::SceneOpenGL::Window::performPaint (this=0x8b69f80, mask=<value optimized out>, region=) at ../../kwin/scene_opengl.cpp:1519
#9  0x001c2cef in KWin::Scene::finalDrawWindow (this=0x85f6fc0, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/scene.cpp:324
#10 0x001dbab3 in KWin::EffectsHandlerImpl::drawWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:178
#11 0x009ed32d in KWin::Effect::drawWindow (this=0x86ff4c8, w=0x8874a10, mask=38, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:252
#12 0x001dbb37 in KWin::EffectsHandlerImpl::drawWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:174
#13 0x009ed32d in KWin::Effect::drawWindow (this=0x87a6bf0, w=0x8874a10, mask=38, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:252
#14 0x001dbb37 in KWin::EffectsHandlerImpl::drawWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:174
#15 0x02de4452 in KWin::ShadowEffect::drawWindow (this=0x8711028, w=0x8874a10, mask=<value optimized out>, region=..., data=...) at ../../../kwin/effects/shadow/shadow.cpp:250
#16 0x001dbb37 in KWin::EffectsHandlerImpl::drawWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:174
#17 0x009ed32d in KWin::Effect::drawWindow (this=0x8708ee8, w=0x8874a10, mask=38, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:252
#18 0x001dbb37 in KWin::EffectsHandlerImpl::drawWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:174
#19 0x009ed32d in KWin::Effect::drawWindow (this=0x87a1890, w=0x8874a10, mask=38, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:252
#20 0x001dbb37 in KWin::EffectsHandlerImpl::drawWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:174
#21 0x009ed32d in KWin::Effect::drawWindow (this=0x878c600, w=0x8874a10, mask=38, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:252
#22 0x001dbb37 in KWin::EffectsHandlerImpl::drawWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:174
#23 0x009ed32d in KWin::Effect::drawWindow (this=0x878e788, w=0x8874a10, mask=38, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:252
#24 0x001dbb37 in KWin::EffectsHandlerImpl::drawWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:174
#25 0x009ed32d in KWin::Effect::drawWindow (this=0x86fd750, w=0x8874a10, mask=38, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:252
#26 0x001dbb37 in KWin::EffectsHandlerImpl::drawWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:174
#27 0x009ed32d in KWin::Effect::drawWindow (this=0x86d27a8, w=0x8874a10, mask=38, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:252
#28 0x001dbb37 in KWin::EffectsHandlerImpl::drawWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:174
#29 0x009ed32d in KWin::Effect::drawWindow (this=0x8705860, w=0x8874a10, mask=38, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:252
#30 0x001dbb37 in KWin::EffectsHandlerImpl::drawWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:174
#31 0x009ed32d in KWin::Effect::drawWindow (this=0x8799d88, w=0x8874a10, mask=38, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:252
#32 0x001dbb37 in KWin::EffectsHandlerImpl::drawWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:174
#33 0x009ed32d in KWin::Effect::drawWindow (this=0x87a18c8, w=0x8874a10, mask=38, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:252
#34 0x001dbb37 in KWin::EffectsHandlerImpl::drawWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:174
#35 0x009ed32d in KWin::Effect::drawWindow (this=0x8791f10, w=0x8874a10, mask=38, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:252
#36 0x001dbb37 in KWin::EffectsHandlerImpl::drawWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:174
#37 0x009ed32d in KWin::Effect::drawWindow (this=0x8799180, w=0x8874a10, mask=38, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:252
#38 0x001dbb37 in KWin::EffectsHandlerImpl::drawWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:174
#39 0x009ed32d in KWin::Effect::drawWindow (this=0x871ec78, w=0x8874a10, mask=38, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:252
#40 0x001dbb37 in KWin::EffectsHandlerImpl::drawWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:174
#41 0x009ed32d in KWin::Effect::drawWindow (this=0x87a1630, w=0x8874a10, mask=38, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:252
#42 0x001dbb37 in KWin::EffectsHandlerImpl::drawWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:174
#43 0x009ed32d in KWin::Effect::drawWindow (this=0x86f6588, w=0x8874a10, mask=38, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:252
#44 0x001dbb37 in KWin::EffectsHandlerImpl::drawWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:174
#45 0x009ed32d in KWin::Effect::drawWindow (this=0x870e228, w=0x8874a10, mask=38, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:252
#46 0x001dbb37 in KWin::EffectsHandlerImpl::drawWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:174
#47 0x009ed32d in KWin::Effect::drawWindow (this=0x879b308, w=0x8874a10, mask=38, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:252
#48 0x001dbb37 in KWin::EffectsHandlerImpl::drawWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:174
#49 0x001c213d in KWin::Scene::finalPaintWindow (this=0x85f6fc0, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/scene.cpp:318
#50 0x001dbbb3 in KWin::EffectsHandlerImpl::paintWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:157
#51 0x02e1dc5f in KWin::SnowEffect::paintWindow (this=0x86ff4c0, w=0x8874a10, mask=38, region=..., data=...) at ../../../kwin/effects/snow/snow.cpp:232
#52 0x001dbc37 in KWin::EffectsHandlerImpl::paintWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:153
#53 0x02dc2924 in KWin::LogoutEffect::paintWindow (this=0x87a6bf0, w=0x8874a10, mask=38, region=..., data=...) at ../../../kwin/effects/logout/logout.cpp:187
#54 0x001dbc37 in KWin::EffectsHandlerImpl::paintWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:153
#55 0x009ed3ad in KWin::Effect::paintWindow (this=0x8711030, w=0x8874a10, mask=38, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:242
#56 0x001dbc37 in KWin::EffectsHandlerImpl::paintWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:153
#57 0x02dc9719 in KWin::PresentWindowsEffect::paintWindow (this=0x8708ee0, w=0x8874a10, mask=38, region=..., data=...) at ../../../kwin/effects/presentwindows/presentwindows.cpp:359
#58 0x001dbc37 in KWin::EffectsHandlerImpl::paintWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:153
#59 0x02defc9c in KWin::TaskbarThumbnailEffect::paintWindow (this=0x87a1890, w=0x8874a10, mask=38, region=..., data=...) at ../../../kwin/effects/taskbarthumbnail/taskbarthumbnail.cpp:71
#60 0x001dbc37 in KWin::EffectsHandlerImpl::paintWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:153
#61 0x02dc027c in KWin::HighlightWindowEffect::paintWindow (this=0x878c600, w=0x8874a10, mask=38, region=..., data=...) at ../../../kwin/effects/highlightwindow/highlightwindow.cpp:104
#62 0x001dbc37 in KWin::EffectsHandlerImpl::paintWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:153
#63 0x02db83f8 in KWin::DialogParentEffect::paintWindow (this=0x878e788, w=0x8874a10, mask=38, region=..., data=...) at ../../../kwin/effects/dialogparent/dialogparent.cpp:70
#64 0x001dbc37 in KWin::EffectsHandlerImpl::paintWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:153
#65 0x02dbbda6 in KWin::FadeEffect::paintWindow (this=0x86fd750, w=0x8874a10, mask=38, region=..., data=...) at ../../../kwin/effects/fade/fade.cpp:150
#66 0x001dbc37 in KWin::EffectsHandlerImpl::paintWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:153
#67 0x02deefea in KWin::SlidingPopupsEffect::paintWindow (this=0x86d27a8, w=0x8874a10, mask=38, region=..., data=...) at ../../../kwin/effects/slidingpopups/slidingpopups.cpp:127
#68 0x001dbc37 in KWin::EffectsHandlerImpl::paintWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:153
#69 0x02db1275 in KWin::DesktopGridEffect::paintWindow (this=0x8705858, w=0x8874a10, mask=38, region=..., data=...) at ../../../kwin/effects/desktopgrid/desktopgrid.cpp:359
#70 0x001dbc37 in KWin::EffectsHandlerImpl::paintWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:153
#71 0x02da410e in KWin::BoxSwitchEffect::paintWindow (this=0x8799d88, w=0x8874a10, mask=38, region=..., data=...) at ../../../kwin/effects/boxswitch/boxswitch.cpp:241
#72 0x001dbc37 in KWin::EffectsHandlerImpl::paintWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:153
#73 0x02dfc452 in KWin::CubeEffect::paintWindow (this=0x87a18c0, w=0x8874a10, mask=38, region=..., data=...) at ../../../kwin/effects/cube/cube.cpp:1580
#74 0x001dbc37 in KWin::EffectsHandlerImpl::paintWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:153
#75 0x02e05cda in KWin::CubeSlideEffect::paintWindow (this=0x8791f10, w=0x8874a10, mask=38, region=..., data=...) at ../../../kwin/effects/cube/cubeslide.cpp:403
#76 0x001dbc37 in KWin::EffectsHandlerImpl::paintWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:153
#77 0x02dc6e8c in KWin::TranslucencyEffect::paintWindow (this=0x8799180, w=0x8874a10, mask=38, region=..., data=...) at ../../../kwin/effects/translucency/translucency.cpp:180
#78 0x001dbc37 in KWin::EffectsHandlerImpl::paintWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:153
#79 0x02dc88f7 in KWin::MinimizeAnimationEffect::paintWindow (this=0x871ec78, w=0x8874a10, mask=38, region=..., data=...) at ../../../kwin/effects/minimizeanimation/minimizeanimation.cpp:103
#80 0x001dbc37 in KWin::EffectsHandlerImpl::paintWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:153
#81 0x02df4ac2 in KWin::CoverSwitchEffect::paintWindow (this=0x87a1630, w=0x8874a10, mask=38, region=..., data=...) at ../../../kwin/effects/coverswitch/coverswitch.cpp:500
#82 0x001dbc37 in KWin::EffectsHandlerImpl::paintWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:153
#83 0x02e2304e in KWin::WobblyWindowsEffect::paintWindow (this=0x86f6588, w=0x8874a10, mask=38, region=..., data=...) at ../../../kwin/effects/wobblywindows/wobblywindows.cpp:357
#84 0x001dbc37 in KWin::EffectsHandlerImpl::paintWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:153
#85 0x02dc1fc1 in KWin::LoginEffect::paintWindow (this=0x870e228, w=0x8874a10, mask=38, region=..., data=...) at ../../../kwin/effects/login/login.cpp:69
#86 0x001dbc37 in KWin::EffectsHandlerImpl::paintWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:153
#87 0x009ed3ad in KWin::Effect::paintWindow (this=0x879b308, w=0x8874a10, mask=38, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:242
#88 0x001dbc37 in KWin::EffectsHandlerImpl::paintWindow (this=0x8631e88, w=0x8874a10, mask=38, region=..., data=...) at ../../kwin/effects.cpp:153
#89 0x001c39cc in KWin::Scene::paintWindow (this=0x85f6fc0, w=0x8b69f80, mask=38, region=..., quads=...) at ../../kwin/scene.cpp:312
#90 0x001c47a5 in KWin::Scene::paintGenericScreen (this=0x85f6fc0, orig_mask=<value optimized out>) at ../../kwin/scene.cpp:210
#91 0x001cf9f5 in KWin::SceneOpenGL::paintGenericScreen (this=0x85f6fc0, mask=<value optimized out>, data=...) at ../../kwin/scene_opengl.cpp:880
#92 0x001c2230 in KWin::Scene::finalPaintScreen (this=0x85f6fc0, mask=32, region=..., data=...) at ../../kwin/scene.cpp:174
#93 0x001dbcac in KWin::EffectsHandlerImpl::paintScreen (this=0x8631e88, mask=32, region=..., data=...) at ../../kwin/effects.cpp:126
#94 0x02e1e051 in KWin::SnowEffect::paintScreen (this=0x86ff4c0, mask=32, region=) at ../../../kwin/effects/snow/snow.cpp:120
#95 0x001dbd30 in KWin::EffectsHandlerImpl::paintScreen (this=0x8631e88, mask=32, region=..., data=...) at ../../kwin/effects.cpp:122
#96 0x02dc35d7 in KWin::LogoutEffect::paintScreen (this=0x87a6bf0, mask=32, region=..., data=...) at ../../../kwin/effects/logout/logout.cpp:196
#97 0x001dbd30 in KWin::EffectsHandlerImpl::paintScreen (this=0x8631e88, mask=32, region=..., data=...) at ../../kwin/effects.cpp:122
#98 0x02de402f in KWin::ShadowEffect::paintScreen (this=0x8711028, mask=<value optimized out>, region=..., data=...) at ../../../kwin/effects/shadow/shadow.cpp:189
#99 0x001dbd30 in KWin::EffectsHandlerImpl::paintScreen (this=0x8631e88, mask=32, region=..., data=...) at ../../kwin/effects.cpp:122
#100 0x02dc9e6f in KWin::PresentWindowsEffect::paintScreen (this=0x8708ee0, mask=32, region=..., data=...) at ../../../kwin/effects/presentwindows/presentwindows.cpp:196
#101 0x001dbd30 in KWin::EffectsHandlerImpl::paintScreen (this=0x8631e88, mask=32, region=..., data=...) at ../../kwin/effects.cpp:122
#102 0x009ed426 in KWin::Effect::paintScreen (this=0x87a1890, mask=32, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#103 0x001dbd30 in KWin::EffectsHandlerImpl::paintScreen (this=0x8631e88, mask=32, region=..., data=...) at ../../kwin/effects.cpp:122
#104 0x009ed426 in KWin::Effect::paintScreen (this=0x878c600, mask=32, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#105 0x001dbd30 in KWin::EffectsHandlerImpl::paintScreen (this=0x8631e88, mask=32, region=..., data=...) at ../../kwin/effects.cpp:122
#106 0x009ed426 in KWin::Effect::paintScreen (this=0x878e788, mask=32, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#107 0x001dbd30 in KWin::EffectsHandlerImpl::paintScreen (this=0x8631e88, mask=32, region=..., data=...) at ../../kwin/effects.cpp:122
#108 0x009ed426 in KWin::Effect::paintScreen (this=0x86fd750, mask=32, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#109 0x001dbd30 in KWin::EffectsHandlerImpl::paintScreen (this=0x8631e88, mask=32, region=..., data=...) at ../../kwin/effects.cpp:122
#110 0x009ed426 in KWin::Effect::paintScreen (this=0x86d27a8, mask=32, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#111 0x001dbd30 in KWin::EffectsHandlerImpl::paintScreen (this=0x8631e88, mask=32, region=..., data=...) at ../../kwin/effects.cpp:122
#112 0x02dada83 in KWin::DesktopGridEffect::paintScreen (this=0x8705858, mask=32, region=..., data=...) at ../../../kwin/effects/desktopgrid/desktopgrid.cpp:151
#113 0x001dbd30 in KWin::EffectsHandlerImpl::paintScreen (this=0x8631e88, mask=32, region=..., data=...) at ../../kwin/effects.cpp:122
#114 0x02dab459 in KWin::BoxSwitchEffect::paintScreen (this=0x8799d88, mask=32, region=..., data=...) at ../../../kwin/effects/boxswitch/boxswitch.cpp:142
#115 0x001dbd30 in KWin::EffectsHandlerImpl::paintScreen (this=0x8631e88, mask=32, region=..., data=...) at ../../kwin/effects.cpp:122
#116 0x02dffa34 in KWin::CubeEffect::paintScreen (this=0x87a18c0, mask=32, region=..., data=...) at ../../../kwin/effects/cube/cube.cpp:697
#117 0x001dbd30 in KWin::EffectsHandlerImpl::paintScreen (this=0x8631e88, mask=32, region=..., data=...) at ../../kwin/effects.cpp:122
#118 0x02e07653 in KWin::CubeSlideEffect::paintScreen (this=0x8791f10, mask=32, region=..., data=...) at ../../../kwin/effects/cube/cubeslide.cpp:105
#119 0x001dbd30 in KWin::EffectsHandlerImpl::paintScreen (this=0x8631e88, mask=32, region=..., data=...) at ../../kwin/effects.cpp:122
#120 0x009ed426 in KWin::Effect::paintScreen (this=0x8799180, mask=32, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#121 0x001dbd30 in KWin::EffectsHandlerImpl::paintScreen (this=0x8631e88, mask=32, region=..., data=...) at ../../kwin/effects.cpp:122
#122 0x009ed426 in KWin::Effect::paintScreen (this=0x871ec78, mask=32, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#123 0x001dbd30 in KWin::EffectsHandlerImpl::paintScreen (this=0x8631e88, mask=32, region=..., data=...) at ../../kwin/effects.cpp:122
#124 0x02df6a9c in KWin::CoverSwitchEffect::paintScreen (this=0x87a1630, mask=32, region=..., data=...) at ../../../kwin/effects/coverswitch/coverswitch.cpp:124
#125 0x001dbd30 in KWin::EffectsHandlerImpl::paintScreen (this=0x8631e88, mask=32, region=..., data=...) at ../../kwin/effects.cpp:122
#126 0x009ed426 in KWin::Effect::paintScreen (this=0x86f6588, mask=32, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#127 0x001dbd30 in KWin::EffectsHandlerImpl::paintScreen (this=0x8631e88, mask=32, region=..., data=...) at ../../kwin/effects.cpp:122
#128 0x009ed426 in KWin::Effect::paintScreen (this=0x870e228, mask=32, region=..., data=...) at ../../../kwin/lib/kwineffects.cpp:227
#129 0x001dbd30 in KWin::EffectsHandlerImpl::paintScreen (this=0x8631e88, mask=32, region=..., data=...) at ../../kwin/effects.cpp:122
#130 0x02df3133 in KWin::ZoomEffect::paintScreen (this=0x879b300, mask=32, region=..., data=...) at ../../../kwin/effects/zoom/zoom.cpp:73
#131 0x001dbd30 in KWin::EffectsHandlerImpl::paintScreen (this=0x8631e88, mask=32, region=..., data=...) at ../../kwin/effects.cpp:122
#132 0x001c3ca4 in KWin::Scene::paintScreen (this=0x85f6fc0, mask=0xbfccb468, region=0xbfccb534) at ../../kwin/scene.cpp:134
#133 0x001d553a in KWin::SceneOpenGL::paint (this=0x85f6fc0, damage=..., toplevels=...) at ../../kwin/scene_opengl.cpp:748
#134 0x001be604 in KWin::Workspace::performCompositing (this=0x86176d0) at ../../kwin/composite.cpp:424
#135 0x001364a6 in KWin::Workspace::qt_metacall (this=0x86176d0, _c=QMetaObject::InvokeMetaMethod, _id=173, _a=0xbfccb65c) at ./workspace.moc:535
#136 0x01583c9a in QMetaObject::metacall (object=0x86176d0, cl=145819408, idx=173, argv=0xbfccb65c) at kernel/qmetaobject.cpp:237
#137 0x015923d5 in QMetaObject::activate (sender=0x8617958, m=0x16925a4, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3293
#138 0x015e3aa7 in QTimer::timeout (this=0x8617958) at .moc/release-shared/moc_qtimer.cpp:134
#139 0x0159a60e in QTimer::timerEvent (this=0x8617958, e=0xbfccbbb0) at kernel/qtimer.cpp:271
#140 0x0158f254 in QObject::event (this=0x8617958, e=0x1) at kernel/qobject.cpp:1212
#141 0x061a44dc in QApplicationPrivate::notify_helper (this=0x850b450, receiver=0x8617958, e=0xbfccbbb0) at kernel/qapplication.cpp:4300
#142 0x061ab05e in QApplication::notify (this=0xbfccbf28, receiver=0x8617958, e=0xbfccbbb0) at kernel/qapplication.cpp:3704
#143 0x003d6f2a in KApplication::notify (this=0xbfccbf28, receiver=0x8617958, event=0xbfccbbb0) at ../../kdeui/kernel/kapplication.cpp:302
#144 0x00152def in KWin::Application::notify (this=0xbfccbf28, o=0x8617958, e=0xbfccbbb0) at ../../kwin/main.cpp:370
#145 0x0157ea3b in QCoreApplication::notifyInternal (this=0xbfccbf28, receiver=0x8617958, event=0xbfccbbb0) at kernel/qcoreapplication.cpp:704
#146 0x015add66 in QCoreApplication::sendEvent (this=0x850e634) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#147 QTimerInfoList::activateTimers (this=0x850e634) at kernel/qeventdispatcher_unix.cpp:603
#148 0x015aa917 in timerSourceDispatch (source=0x850e668) at kernel/qeventdispatcher_glib.cpp:184
#149 idleTimerSourceDispatch (source=0x850e668) at kernel/qeventdispatcher_glib.cpp:231
#150 0x07d345e5 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#151 0x07d382d8 in ?? () from /lib/libglib-2.0.so.0
#152 0x07d384b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#153 0x015aa5d5 in QEventDispatcherGlib::processEvents (this=0x84f5c30, flags=...) at kernel/qeventdispatcher_glib.cpp:412
#154 0x06264135 in QGuiEventDispatcherGlib::processEvents (this=0x84f5c30, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#155 0x0157d059 in QEventLoop::processEvents (this=0xbfccbe74, flags=) at kernel/qeventloop.cpp:149
#156 0x0157d4aa in QEventLoop::exec (this=0xbfccbe74, flags=...) at kernel/qeventloop.cpp:201
#157 0x0158169f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#158 0x061a4577 in QApplication::exec () at kernel/qapplication.cpp:3579
#159 0x00154a00 in kdemain (argc=3, argv=0xbfccc134) at ../../kwin/main.cpp:526
#160 0x0804860b in main (argc=3, argv=0xbfccc134) at kwin_dummy.cpp:3

Possible duplicates by query: bug 220997.

Reported using DrKonqi