Application: kwin (4.7.2 (4.7.2) "release 5")
KDE Platform Version: 4.7.2 (4.7.2) "release 5"
Qt Version: 4.7.4
Operating System: Linux 3.1.0-1.2-desktop x86_64
Distribution: "openSUSE 12.1 (x86_64)"

-- Information about the crash:
I was on the github website in Firefox - I clicked the login button and KWin crashed and error reporting tool was presented. My System:

Toshiba Satellite L500D-16L
AMD Athlon(tm) II Dual-Core M300
4GB RAM
openSuSE 12.1

The crash does not seem to be reproducible.

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fa149145760 (LWP 2205))]

Thread 2 (Thread 0x7fa12bd3c700 (LWP 2224)):
#0  0x00007fa14497be6c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fa1477a5852 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x7fa147a9de80) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007fa1477a5889 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=<optimized out>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007fa144977f05 in start_thread () from /lib64/libpthread.so.0
#4  0x00007fa14898153d in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7fa149145760 (LWP 2205)):
[KCrash Handler]
#6  0x00007fa14892ecdf in __memcpy_sse2 () from /lib64/libc.so.6
#7  0x00007fa1461c2d05 in __indirect_glProgramParameters4fvNV (target=1, index=11086836, num=1178641280, params=0x7fa144b882a0) at /usr/include/bits/string3.h:52
#8  0x00007fa148d16ed9 in KWin::LanczosShader::init (this=0xa92a50) at /usr/src/debug/kde-workspace-4.7.2/kwin/lanczosfilter.cpp:669
#9  0x00007fa148d1752c in KWin::LanczosFilter::init (this=0x797810) at /usr/src/debug/kde-workspace-4.7.2/kwin/lanczosfilter.cpp:76
#10 0x00007fa148d17e10 in KWin::LanczosFilter::performPaint (this=0x797810, w=0x9f8b00, mask=262, region=..., data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/lanczosfilter.cpp:170
#11 0x00007fa148cfc257 in KWin::Scene::finalDrawWindow (this=0x894c10, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/scene.cpp:319
#12 0x00007fa148d1b9d3 in KWin::EffectsHandlerImpl::drawWindow (this=0x8bb4e0, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:279
#13 0x00007fa146d98d7b in KWin::Effect::drawWindow (this=<optimized out>, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:177
#14 0x00007fa148d1ba48 in KWin::EffectsHandlerImpl::drawWindow (this=0x8bb4e0, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:276
#15 0x00007fa146d98d7b in KWin::Effect::drawWindow (this=<optimized out>, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:177
#16 0x00007fa148d1ba48 in KWin::EffectsHandlerImpl::drawWindow (this=0x8bb4e0, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:276
#17 0x00007fa146d98d7b in KWin::Effect::drawWindow (this=<optimized out>, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:177
#18 0x00007fa148d1ba48 in KWin::EffectsHandlerImpl::drawWindow (this=0x8bb4e0, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:276
#19 0x00007fa146d98d7b in KWin::Effect::drawWindow (this=<optimized out>, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:177
#20 0x00007fa148d1ba48 in KWin::EffectsHandlerImpl::drawWindow (this=0x8bb4e0, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:276
#21 0x00007fa12bda8c73 in KWin::BlurEffect::drawWindow (this=<optimized out>, w=0x9f8b00, mask=262, region=..., data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects/blur/blur.cpp:364
#22 0x00007fa148d1ba48 in KWin::EffectsHandlerImpl::drawWindow (this=0x8bb4e0, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:276
#23 0x00007fa146d98d7b in KWin::Effect::drawWindow (this=<optimized out>, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:177
#24 0x00007fa148d1ba48 in KWin::EffectsHandlerImpl::drawWindow (this=0x8bb4e0, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:276
#25 0x00007fa146d98d7b in KWin::Effect::drawWindow (this=<optimized out>, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:177
#26 0x00007fa148d1ba48 in KWin::EffectsHandlerImpl::drawWindow (this=0x8bb4e0, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:276
#27 0x00007fa146d98d7b in KWin::Effect::drawWindow (this=<optimized out>, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:177
#28 0x00007fa148d1ba48 in KWin::EffectsHandlerImpl::drawWindow (this=0x8bb4e0, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:276
#29 0x00007fa146d98d7b in KWin::Effect::drawWindow (this=<optimized out>, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:177
#30 0x00007fa148d1ba48 in KWin::EffectsHandlerImpl::drawWindow (this=0x8bb4e0, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:276
#31 0x00007fa146d98d7b in KWin::Effect::drawWindow (this=<optimized out>, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:177
#32 0x00007fa148d1ba48 in KWin::EffectsHandlerImpl::drawWindow (this=0x8bb4e0, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:276
#33 0x00007fa146d98d7b in KWin::Effect::drawWindow (this=<optimized out>, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:177
#34 0x00007fa148d1ba48 in KWin::EffectsHandlerImpl::drawWindow (this=0x8bb4e0, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:276
#35 0x00007fa146d98d7b in KWin::Effect::drawWindow (this=<optimized out>, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:177
#36 0x00007fa148d1ba48 in KWin::EffectsHandlerImpl::drawWindow (this=0x8bb4e0, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:276
#37 0x00007fa146d98d7b in KWin::Effect::drawWindow (this=<optimized out>, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:177
#38 0x00007fa148d1ba48 in KWin::EffectsHandlerImpl::drawWindow (this=0x8bb4e0, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:276
#39 0x00007fa146d98d7b in KWin::Effect::drawWindow (this=<optimized out>, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:177
#40 0x00007fa148d1ba48 in KWin::EffectsHandlerImpl::drawWindow (this=0x8bb4e0, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:276
#41 0x00007fa146d98d7b in KWin::Effect::drawWindow (this=<optimized out>, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:177
#42 0x00007fa148d1ba48 in KWin::EffectsHandlerImpl::drawWindow (this=0x8bb4e0, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:276
#43 0x00007fa146d98d7b in KWin::Effect::drawWindow (this=<optimized out>, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:177
#44 0x00007fa148d1ba48 in KWin::EffectsHandlerImpl::drawWindow (this=0x8bb4e0, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:276
#45 0x00007fa146d98d7b in KWin::Effect::drawWindow (this=<optimized out>, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:177
#46 0x00007fa148d1ba48 in KWin::EffectsHandlerImpl::drawWindow (this=0x8bb4e0, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:276
#47 0x00007fa146d98d7b in KWin::Effect::drawWindow (this=<optimized out>, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:177
#48 0x00007fa148d1ba48 in KWin::EffectsHandlerImpl::drawWindow (this=0x8bb4e0, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:276
#49 0x00007fa146d98d7b in KWin::Effect::drawWindow (this=<optimized out>, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:177
#50 0x00007fa148d1ba48 in KWin::EffectsHandlerImpl::drawWindow (this=0x8bb4e0, w=0x9f8b00, mask=262, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:276
#51 0x00007fa12bd763f2 in KWin::TaskbarThumbnailEffect::paintWindow (this=<optimized out>, w=0x993280, mask=<optimized out>, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects/taskbarthumbnail/taskbarthumbnail.cpp:100
#52 0x00007fa148d1b8b8 in KWin::EffectsHandlerImpl::paintWindow (this=0x8bb4e0, w=0x993280, mask=522, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:239
#53 0x00007fa12bd8edd7 in KWin::HighlightWindowEffect::paintWindow (this=<optimized out>, w=0x993280, mask=522, region=..., data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects/highlightwindow/highlightwindow.cpp:107
#54 0x00007fa148d1b8b8 in KWin::EffectsHandlerImpl::paintWindow (this=0x8bb4e0, w=0x993280, mask=522, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:239
#55 0x00007fa12bd5bfc6 in KWin::DialogParentEffect::paintWindow (this=<optimized out>, w=0x993280, mask=522, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects/dialogparent/dialogparent.cpp:64
#56 0x00007fa148d1b8b8 in KWin::EffectsHandlerImpl::paintWindow (this=0x8bb4e0, w=0x993280, mask=522, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:239
#57 0x00007fa12bd5f1de in KWin::FadeEffect::paintWindow (this=0x8773b0, w=0x993280, mask=522, region=..., data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects/fade/fade.cpp:138
#58 0x00007fa148d1b8b8 in KWin::EffectsHandlerImpl::paintWindow (this=0x8bb4e0, w=0x993280, mask=522, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:239
#59 0x00007fa12bd87d3b in KWin::DesktopGridEffect::paintWindow (this=0x8a70c0, w=0x993280, mask=522, region=..., data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects/desktopgrid/desktopgrid.cpp:377
#60 0x00007fa148d1b8b8 in KWin::EffectsHandlerImpl::paintWindow (this=0x8bb4e0, w=0x993280, mask=522, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:239
#61 0x00007fa12bd9ab67 in KWin::SlideEffect::paintWindow (this=<optimized out>, w=0x993280, mask=522, region=..., data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects/slide/slide.cpp:151
#62 0x00007fa148d1b8b8 in KWin::EffectsHandlerImpl::paintWindow (this=0x8bb4e0, w=0x993280, mask=522, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:239
#63 0x00007fa12bd785e5 in KWin::BoxSwitchEffect::paintWindow (this=<optimized out>, w=0x993280, mask=522, region=..., data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects/boxswitch/boxswitch.cpp:221
#64 0x00007fa148d1b8b8 in KWin::EffectsHandlerImpl::paintWindow (this=0x8bb4e0, w=0x993280, mask=522, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:239
#65 0x00007fa146d98e7b in KWin::Effect::paintWindow (this=<optimized out>, w=0x993280, mask=522, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:157
#66 0x00007fa148d1b8b8 in KWin::EffectsHandlerImpl::paintWindow (this=0x8bb4e0, w=0x993280, mask=522, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:239
#67 0x00007fa12bd942a3 in KWin::TranslucencyEffect::paintWindow (this=<optimized out>, w=0x993280, mask=522, region=..., data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects/translucency/translucency.cpp:166
#68 0x00007fa148d1b8b8 in KWin::EffectsHandlerImpl::paintWindow (this=0x8bb4e0, w=0x993280, mask=522, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:239
#69 0x00007fa12bd952a2 in KWin::MinimizeAnimationEffect::paintWindow (this=<optimized out>, w=0x993280, mask=522, region=..., data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects/minimizeanimation/minimizeanimation.cpp:102
#70 0x00007fa148d1b8b8 in KWin::EffectsHandlerImpl::paintWindow (this=0x8bb4e0, w=0x993280, mask=522, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:239
#71 0x00007fa12bd74194 in KWin::SlidingPopupsEffect::paintWindow (this=<optimized out>, w=0x993280, mask=522, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects/slidingpopups/slidingpopups.cpp:146
#72 0x00007fa148d1b8b8 in KWin::EffectsHandlerImpl::paintWindow (this=0x8bb4e0, w=0x993280, mask=522, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:239
#73 0x00007fa12bd61cf1 in KWin::LoginEffect::paintWindow (this=<optimized out>, w=0x993280, mask=522, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects/login/login.cpp:66
#74 0x00007fa148d1b8b8 in KWin::EffectsHandlerImpl::paintWindow (this=0x8bb4e0, w=0x993280, mask=522, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:239
#75 0x00007fa146d98e7b in KWin::Effect::paintWindow (this=<optimized out>, w=0x993280, mask=522, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:157
#76 0x00007fa148d1b8b8 in KWin::EffectsHandlerImpl::paintWindow (this=0x8bb4e0, w=0x993280, mask=522, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:239
#77 0x00007fa148cfc09e in paintWindow (quads=<optimized out>, region=..., mask=522, w=0x9b7270, this=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/scene.cpp:306
#78 KWin::Scene::paintWindow (this=<optimized out>, w=0x9b7270, mask=522, region=..., quads=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/scene.cpp:297
#79 0x00007fa148cfebf7 in KWin::Scene::paintGenericScreen (this=0x894c10, orig_mask=520) at /usr/src/debug/kde-workspace-4.7.2/kwin/scene.cpp:210
#80 0x00007fa148d0cfc1 in KWin::SceneOpenGL::paintGenericScreen (this=0x894c10, mask=520, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/scene_opengl.cpp:169
#81 0x00007fa148cfba37 in KWin::Scene::finalPaintScreen (this=0x894c10, mask=520, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/scene.cpp:175
#82 0x00007fa148d1b6e7 in KWin::EffectsHandlerImpl::paintScreen (this=0x8bb4e0, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:215
#83 0x00007fa12bdd8fc6 in KWin::StartupFeedbackEffect::paintScreen (this=0x8e68d0, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects/startupfeedback/startupfeedback.cpp:174
#84 0x00007fa148d1b746 in KWin::EffectsHandlerImpl::paintScreen (this=0x8bb4e0, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:212
#85 0x00007fa12bd62176 in KWin::OutlineEffect::paintScreen (this=0x87e140, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects/outline/outline.cpp:44
#86 0x00007fa148d1b746 in KWin::EffectsHandlerImpl::paintScreen (this=0x8bb4e0, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:212
#87 0x00007fa146d98ee8 in KWin::Effect::paintScreen (this=<optimized out>, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:142
#88 0x00007fa148d1b746 in KWin::EffectsHandlerImpl::paintScreen (this=0x8bb4e0, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:212
#89 0x00007fa12bda625d in KWin::LogoutEffect::paintScreen (this=0x901d10, mask=520, region=..., data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects/logout/logout.cpp:200
#90 0x00007fa148d1b746 in KWin::EffectsHandlerImpl::paintScreen (this=0x8bb4e0, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:212
#91 0x00007fa146d98ee8 in KWin::Effect::paintScreen (this=<optimized out>, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:142
#92 0x00007fa148d1b746 in KWin::EffectsHandlerImpl::paintScreen (this=0x8bb4e0, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:212
#93 0x00007fa12bd623b9 in KWin::PresentWindowsEffect::paintScreen (this=0x885690, mask=520, region=..., data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects/presentwindows/presentwindows.cpp:216
#94 0x00007fa148d1b746 in KWin::EffectsHandlerImpl::paintScreen (this=0x8bb4e0, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:212
#95 0x00007fa146d98ee8 in KWin::Effect::paintScreen (this=<optimized out>, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:142
#96 0x00007fa148d1b746 in KWin::EffectsHandlerImpl::paintScreen (this=0x8bb4e0, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:212
#97 0x00007fa146d98ee8 in KWin::Effect::paintScreen (this=<optimized out>, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:142
#98 0x00007fa148d1b746 in KWin::EffectsHandlerImpl::paintScreen (this=0x8bb4e0, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:212
#99 0x00007fa146d98ee8 in KWin::Effect::paintScreen (this=<optimized out>, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:142
#100 0x00007fa148d1b746 in KWin::EffectsHandlerImpl::paintScreen (this=0x8bb4e0, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:212
#101 0x00007fa146d98ee8 in KWin::Effect::paintScreen (this=<optimized out>, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:142
#102 0x00007fa148d1b746 in KWin::EffectsHandlerImpl::paintScreen (this=0x8bb4e0, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:212
#103 0x00007fa12bd830a8 in KWin::DesktopGridEffect::paintScreen (this=<optimized out>, mask=520, region=..., data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects/desktopgrid/desktopgrid.cpp:161
#104 0x00007fa148d1b746 in KWin::EffectsHandlerImpl::paintScreen (this=0x8bb4e0, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:212
#105 0x00007fa12bd9b2d7 in KWin::SlideEffect::paintScreen (this=<optimized out>, mask=520, region=..., data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects/slide/slide.cpp:81
#106 0x00007fa148d1b746 in KWin::EffectsHandlerImpl::paintScreen (this=0x8bb4e0, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:212
#107 0x00007fa12bd7d0a9 in KWin::BoxSwitchEffect::paintScreen (this=0x8ec840, mask=520, region=..., data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects/boxswitch/boxswitch.cpp:137
#108 0x00007fa148d1b746 in KWin::EffectsHandlerImpl::paintScreen (this=0x8bb4e0, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:212
#109 0x00007fa146d98ee8 in KWin::Effect::paintScreen (this=<optimized out>, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:142
#110 0x00007fa148d1b746 in KWin::EffectsHandlerImpl::paintScreen (this=0x8bb4e0, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:212
#111 0x00007fa146d98ee8 in KWin::Effect::paintScreen (this=<optimized out>, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:142
#112 0x00007fa148d1b746 in KWin::EffectsHandlerImpl::paintScreen (this=0x8bb4e0, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:212
#113 0x00007fa146d98ee8 in KWin::Effect::paintScreen (this=<optimized out>, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:142
#114 0x00007fa148d1b746 in KWin::EffectsHandlerImpl::paintScreen (this=0x8bb4e0, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:212
#115 0x00007fa146d98ee8 in KWin::Effect::paintScreen (this=<optimized out>, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:142
#116 0x00007fa148d1b746 in KWin::EffectsHandlerImpl::paintScreen (this=0x8bb4e0, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:212
#117 0x00007fa146d98ee8 in KWin::Effect::paintScreen (this=<optimized out>, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:142
#118 0x00007fa148d1b746 in KWin::EffectsHandlerImpl::paintScreen (this=0x8bb4e0, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:212
#119 0x00007fa12bda2761 in KWin::ZoomEffect::paintScreen (this=0x85d510, mask=520, region=..., data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects/zoom/zoom.cpp:324
#120 0x00007fa148d1b746 in KWin::EffectsHandlerImpl::paintScreen (this=0x8bb4e0, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:212
#121 0x00007fa148cfe426 in KWin::Scene::paintScreen (this=0x894c10, mask=0x7fff544336f8, region=0x7fff54433850) at /usr/src/debug/kde-workspace-4.7.2/kwin/scene.cpp:136
#122 0x00007fa148d158d2 in KWin::SceneOpenGL::paint (this=0x894c10, damage=..., toplevels=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/scene_opengl_glx.cpp:459
#123 0x00007fa148cf878d in KWin::Workspace::performCompositing (this=0x796a70) at /usr/src/debug/kde-workspace-4.7.2/kwin/composite.cpp:432
#124 0x00007fa144d04e79 in QObject::event (this=0x796a70, e=<optimized out>) at kernel/qobject.cpp:1190
#125 0x00007fa143ea0c34 in notify_helper (e=0x7fff54433f30, receiver=0x796a70, this=0x649dc0) at kernel/qapplication.cpp:4481
#126 QApplicationPrivate::notify_helper (this=0x649dc0, receiver=0x796a70, e=0x7fff54433f30) at kernel/qapplication.cpp:4453
#127 0x00007fa143ea5ac1 in QApplication::notify (this=0x7fff544343c0, receiver=0x796a70, e=0x7fff54433f30) at kernel/qapplication.cpp:4360
#128 0x00007fa148475e36 in KApplication::notify (this=0x7fff544343c0, receiver=0x796a70, event=0x7fff54433f30) at /usr/src/debug/kdelibs-4.7.2/kdeui/kernel/kapplication.cpp:311
#129 0x00007fa144cee81c in QCoreApplication::notifyInternal (this=0x7fff544343c0, receiver=0x796a70, event=0x7fff54433f30) at kernel/qcoreapplication.cpp:787
#130 0x00007fa144d1b398 in sendEvent (event=0x7fff54433f30, receiver=<optimized out>) at kernel/qcoreapplication.h:215
#131 QTimerInfoList::activateTimers (this=0x64a840) at kernel/qeventdispatcher_unix.cpp:618
#132 0x00007fa144d1c454 in QEventDispatcherUNIX::processEvents (this=0x607280, flags=...) at kernel/qeventdispatcher_unix.cpp:937
#133 0x00007fa143f44de8 in QEventDispatcherX11::processEvents (this=0x607280, flags=...) at kernel/qeventdispatcher_x11.cpp:152
#134 0x00007fa144ceda22 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#135 0x00007fa144cedc1f in QEventLoop::exec (this=0x7fff54434300, flags=...) at kernel/qeventloop.cpp:201
#136 0x00007fa144cf1de7 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#137 0x00007fa148c955f6 in kdemain (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/main.cpp:517
#138 0x00007fa1488c923d in __libc_start_main () from /lib64/libc.so.6
#139 0x0000000000400681 in _start () at ../sysdeps/x86_64/elf/start.S:113

Possible duplicates by query: bug 288306, bug 287610, bug 287609.

Reported using DrKonqi