Application: kwin (4.7.2 (4.7.2))
KDE Platform Version: 4.7.2 (4.7.2)
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:
- What I was doing when the application crashed:
kwin crashes when
	- miniatures in taskbar should be shown
	- miniatures in window switcher are activated and I switch the windows
	- all windows are shown as miniatures at the same time

- Custom settings of the application:
kwin crashes only if effects are activated, especially effects that include miniatures

The crash can be reproduced every time.

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f3a262ee760 (LWP 25388))]

Thread 2 (Thread 0x7f3a0dd72700 (LWP 25405)):
#0  0x00007f3a21b2fe6c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f3a24959852 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x7f3a24c51e80) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007f3a24959889 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=<optimized out>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007f3a21b2bf05 in start_thread () from /lib64/libpthread.so.0
#4  0x00007f3a25b3553d in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f3a262ee760 (LWP 25388)):
[KCrash Handler]
#6  0x00007f3a25ae2cdf in __memcpy_sse2 () from /lib64/libc.so.6
#7  0x00007f3a23376d05 in __indirect_glProgramParameters4fvNV (target=1, index=11887668, num=593224576, params=0x7f3a21d3c2a0) at /usr/include/bits/string3.h:52
#8  0x00007f3a25ecaf19 in KWin::LanczosShader::init (this=0xb56290) at /usr/src/debug/kde-workspace-4.7.2/kwin/lanczosfilter.cpp:669
#9  0x00007f3a25ecb56c in KWin::LanczosFilter::init (this=0xa50850) at /usr/src/debug/kde-workspace-4.7.2/kwin/lanczosfilter.cpp:76
#10 0x00007f3a25ecbe50 in KWin::LanczosFilter::performPaint (this=0xa50850, w=0x914760, mask=261, region=..., data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/lanczosfilter.cpp:170
#11 0x00007f3a25eb0297 in KWin::Scene::finalDrawWindow (this=0xa4a7e0, w=0x914760, mask=261, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/scene.cpp:319
#12 0x00007f3a25ecfa63 in KWin::EffectsHandlerImpl::drawWindow (this=0x90a0e0, w=0x914760, mask=261, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:279
#13 0x00007f3a23f4cd9b in KWin::Effect::drawWindow (this=<optimized out>, w=0x914760, mask=261, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:177
#14 0x00007f3a25ecfad8 in KWin::EffectsHandlerImpl::drawWindow (this=0x90a0e0, w=0x914760, mask=261, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:276
#15 0x00007f3a23f4cd9b in KWin::Effect::drawWindow (this=<optimized out>, w=0x914760, mask=261, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:177
#16 0x00007f3a25ecfad8 in KWin::EffectsHandlerImpl::drawWindow (this=0x90a0e0, w=0x914760, mask=261, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:276
#17 0x00007f3a23f4cd9b in KWin::Effect::drawWindow (this=<optimized out>, w=0x914760, mask=261, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:177
#18 0x00007f3a25ecfad8 in KWin::EffectsHandlerImpl::drawWindow (this=0x90a0e0, w=0x914760, mask=261, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:276
#19 0x00007f3a23f4cd9b in KWin::Effect::drawWindow (this=<optimized out>, w=0x914760, mask=261, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:177
#20 0x00007f3a25ecfad8 in KWin::EffectsHandlerImpl::drawWindow (this=0x90a0e0, w=0x914760, mask=261, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:276
#21 0x00007f3a23f4cd9b in KWin::Effect::drawWindow (this=<optimized out>, w=0x914760, mask=261, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:177
#22 0x00007f3a25ecfad8 in KWin::EffectsHandlerImpl::drawWindow (this=0x90a0e0, w=0x914760, mask=261, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:276
#23 0x00007f3a23f4cd9b in KWin::Effect::drawWindow (this=<optimized out>, w=0x914760, mask=261, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:177
#24 0x00007f3a25ecfad8 in KWin::EffectsHandlerImpl::drawWindow (this=0x90a0e0, w=0x914760, mask=261, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:276
#25 0x00007f3a23f4cd9b in KWin::Effect::drawWindow (this=<optimized out>, w=0x914760, mask=261, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:177
#26 0x00007f3a25ecfad8 in KWin::EffectsHandlerImpl::drawWindow (this=0x90a0e0, w=0x914760, mask=261, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:276
#27 0x00007f3a23f4cd9b in KWin::Effect::drawWindow (this=<optimized out>, w=0x914760, mask=261, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:177
#28 0x00007f3a25ecfad8 in KWin::EffectsHandlerImpl::drawWindow (this=0x90a0e0, w=0x914760, mask=261, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:276
#29 0x00007f3a23f4cd9b in KWin::Effect::drawWindow (this=<optimized out>, w=0x914760, mask=261, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/libkwineffects/kwineffects.cpp:177
#30 0x00007f3a25ecfad8 in KWin::EffectsHandlerImpl::drawWindow (this=0x90a0e0, w=0x914760, mask=261, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:276
#31 0x00007f3a0c3013f2 in KWin::TaskbarThumbnailEffect::paintWindow (this=<optimized out>, w=0x872700, mask=<optimized out>, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects/taskbarthumbnail/taskbarthumbnail.cpp:100
#32 0x00007f3a25ecf948 in KWin::EffectsHandlerImpl::paintWindow (this=0x90a0e0, w=0x872700, mask=522, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:239
#33 0x00007f3a0c312d4b in KWin::DesktopGridEffect::paintWindow (this=0xa88e60, w=0x872700, mask=522, region=..., data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects/desktopgrid/desktopgrid.cpp:377
#34 0x00007f3a25ecf948 in KWin::EffectsHandlerImpl::paintWindow (this=0x90a0e0, w=0x872700, mask=522, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:239
#35 0x00007f3a0c31f2b3 in KWin::TranslucencyEffect::paintWindow (this=<optimized out>, w=0x872700, mask=522, region=..., data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects/translucency/translucency.cpp:166
#36 0x00007f3a25ecf948 in KWin::EffectsHandlerImpl::paintWindow (this=0x90a0e0, w=0x872700, mask=522, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:239
#37 0x00007f3a0c3035e5 in KWin::BoxSwitchEffect::paintWindow (this=<optimized out>, w=0x872700, mask=522, region=..., data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects/boxswitch/boxswitch.cpp:221
#38 0x00007f3a25ecf948 in KWin::EffectsHandlerImpl::paintWindow (this=0x90a0e0, w=0x872700, mask=522, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:239
#39 0x00007f3a0c2eccf1 in KWin::LoginEffect::paintWindow (this=<optimized out>, w=0x872700, mask=522, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects/login/login.cpp:66
#40 0x00007f3a25ecf948 in KWin::EffectsHandlerImpl::paintWindow (this=0x90a0e0, w=0x872700, mask=522, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:239
#41 0x00007f3a25eb00de in paintWindow (quads=<optimized out>, region=..., mask=522, w=0x6bd9c0, this=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/scene.cpp:306
#42 KWin::Scene::paintWindow (this=<optimized out>, w=0x6bd9c0, mask=522, region=..., quads=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/scene.cpp:297
#43 0x00007f3a25eb2c37 in KWin::Scene::paintGenericScreen (this=0xa4a7e0, orig_mask=520) at /usr/src/debug/kde-workspace-4.7.2/kwin/scene.cpp:210
#44 0x00007f3a25ec1001 in KWin::SceneOpenGL::paintGenericScreen (this=0xa4a7e0, mask=520, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/scene_opengl.cpp:169
#45 0x00007f3a25eafa77 in KWin::Scene::finalPaintScreen (this=0xa4a7e0, mask=520, region=<optimized out>, data=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/scene.cpp:175
#46 0x00007f3a25ecf777 in KWin::EffectsHandlerImpl::paintScreen (this=0x90a0e0, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:215
#47 0x00007f3a0c364676 in KWin::StartupFeedbackEffect::paintScreen (this=0xac6600, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects/startupfeedback/startupfeedback.cpp:174
#48 0x00007f3a25ecf7d6 in KWin::EffectsHandlerImpl::paintScreen (this=0x90a0e0, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:212
#49 0x00007f3a23f4cf08 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
#50 0x00007f3a25ecf7d6 in KWin::EffectsHandlerImpl::paintScreen (this=0x90a0e0, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:212
#51 0x00007f3a0c33190d in KWin::LogoutEffect::paintScreen (this=0xac67d0, mask=520, region=..., data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects/logout/logout.cpp:200
#52 0x00007f3a25ecf7d6 in KWin::EffectsHandlerImpl::paintScreen (this=0x90a0e0, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:212
#53 0x00007f3a0c2ed3b9 in KWin::PresentWindowsEffect::paintScreen (this=0xa8c430, mask=520, region=..., data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects/presentwindows/presentwindows.cpp:216
#54 0x00007f3a25ecf7d6 in KWin::EffectsHandlerImpl::paintScreen (this=0x90a0e0, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:212
#55 0x00007f3a23f4cf08 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
#56 0x00007f3a25ecf7d6 in KWin::EffectsHandlerImpl::paintScreen (this=0x90a0e0, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:212
#57 0x00007f3a0c30e0b8 in KWin::DesktopGridEffect::paintScreen (this=0xa88e60, mask=520, region=..., data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects/desktopgrid/desktopgrid.cpp:161
#58 0x00007f3a25ecf7d6 in KWin::EffectsHandlerImpl::paintScreen (this=0x90a0e0, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:212
#59 0x00007f3a23f4cf08 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
#60 0x00007f3a25ecf7d6 in KWin::EffectsHandlerImpl::paintScreen (this=0x90a0e0, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:212
#61 0x00007f3a0c3080b9 in KWin::BoxSwitchEffect::paintScreen (this=0xb24b70, mask=520, region=..., data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects/boxswitch/boxswitch.cpp:137
#62 0x00007f3a25ecf7d6 in KWin::EffectsHandlerImpl::paintScreen (this=0x90a0e0, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:212
#63 0x00007f3a23f4cf08 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
#64 0x00007f3a25ecf7d6 in KWin::EffectsHandlerImpl::paintScreen (this=0x90a0e0, mask=520, region=<optimized out>, data=...) at /usr/src/debug/kde-workspace-4.7.2/kwin/effects.cpp:212
#65 0x00007f3a25eb2466 in KWin::Scene::paintScreen (this=0xa4a7e0, mask=0x7ffff9d88c58, region=0x7ffff9d88db0) at /usr/src/debug/kde-workspace-4.7.2/kwin/scene.cpp:136
#66 0x00007f3a25ec9912 in KWin::SceneOpenGL::paint (this=0xa4a7e0, damage=..., toplevels=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/scene_opengl_glx.cpp:459
#67 0x00007f3a25eac7cd in KWin::Workspace::performCompositing (this=0x7c62c0) at /usr/src/debug/kde-workspace-4.7.2/kwin/composite.cpp:432
#68 0x00007f3a21eb8e79 in QObject::event (this=0x7c62c0, e=<optimized out>) at kernel/qobject.cpp:1190
#69 0x00007f3a21054c34 in notify_helper (e=0x7ffff9d89490, receiver=0x7c62c0, this=0x649cf0) at kernel/qapplication.cpp:4481
#70 QApplicationPrivate::notify_helper (this=0x649cf0, receiver=0x7c62c0, e=0x7ffff9d89490) at kernel/qapplication.cpp:4453
#71 0x00007f3a21059ac1 in QApplication::notify (this=0x7ffff9d89920, receiver=0x7c62c0, e=0x7ffff9d89490) at kernel/qapplication.cpp:4360
#72 0x00007f3a25629e36 in KApplication::notify (this=0x7ffff9d89920, receiver=0x7c62c0, event=0x7ffff9d89490) at /usr/src/debug/kdelibs-4.7.2/kdeui/kernel/kapplication.cpp:311
#73 0x00007f3a21ea281c in QCoreApplication::notifyInternal (this=0x7ffff9d89920, receiver=0x7c62c0, event=0x7ffff9d89490) at kernel/qcoreapplication.cpp:787
#74 0x00007f3a21ecf398 in sendEvent (event=0x7ffff9d89490, receiver=<optimized out>) at kernel/qcoreapplication.h:215
#75 QTimerInfoList::activateTimers (this=0x64a770) at kernel/qeventdispatcher_unix.cpp:618
#76 0x00007f3a21ed0454 in QEventDispatcherUNIX::processEvents (this=0x607280, flags=...) at kernel/qeventdispatcher_unix.cpp:937
#77 0x00007f3a210f8de8 in QEventDispatcherX11::processEvents (this=0x607280, flags=...) at kernel/qeventdispatcher_x11.cpp:152
#78 0x00007f3a21ea1a22 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#79 0x00007f3a21ea1c1f in QEventLoop::exec (this=0x7ffff9d89860, flags=...) at kernel/qeventloop.cpp:201
#80 0x00007f3a21ea5de7 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#81 0x00007f3a25e49616 in kdemain (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/kwin/main.cpp:517
#82 0x00007f3a25a7d23d in __libc_start_main () from /lib64/libc.so.6
#83 0x0000000000400681 in _start () at ../sysdeps/x86_64/elf/start.S:113

Possible duplicates by query: bug 289910, bug 288306, bug 287610, bug 287609.

Reported using DrKonqi