Application: kwin (4.9.2)
KDE Platform Version: 4.9.2
Qt Version: 4.8.2
Operating System: Linux 3.2.0-31-generic x86_64
Distribution: Ubuntu 12.04.1 LTS

-- Information about the crash:
- What I was doing when the application crashed:

After every attempt to attach any window as tab to another window, the plasma crashed.

The crash can be reproduced every time.

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f39b1e907c0 (LWP 2791))]

Thread 2 (Thread 0x7f398fdf2700 (LWP 2793)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f39ae59f222 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f39ae59f259 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f39add72764 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#4  0x00007f39a62ffe9a in start_thread (arg=0x7f398fdf2700) at pthread_create.c:308
#5  0x00007f39b16addbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f39b1e907c0 (LWP 2791)):
[KCrash Handler]
#6  0x00007f39946b8448 in Oxygen::Client::paint(QPainter&) () from /usr/lib/kde4/kwin3_oxygen_transparent.so
#7  0x00007f39946b8e92 in Oxygen::Client::paintEvent(QPaintEvent*) () from /usr/lib/kde4/kwin3_oxygen_transparent.so
#8  0x00007f39b008397f in eventFilter (e=0x7fffb3025770, this=0x22c1120, o=<optimized out>) at ../../../kwin/libkdecorations/kcommondecoration.cpp:911
#9  KCommonDecoration::eventFilter (this=0x22c1120, o=0x2506080, e=0x7fffb3025770) at ../../../kwin/libkdecorations/kcommondecoration.cpp:902
#10 0x00007f39946ae458 in Oxygen::Client::eventFilter(QObject*, QEvent*) () from /usr/lib/kde4/kwin3_oxygen_transparent.so
#11 0x00007f39ad21c498 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<optimized out>, receiver=0x2506080, event=0x7fffb3025770) at kernel/qcoreapplication.cpp:1025
#12 0x00007f39ac59d77f in notify_helper (e=0x7fffb3025770, receiver=0x2506080, this=0x1096690) at kernel/qapplication.cpp:4552
#13 QApplicationPrivate::notify_helper (this=0x1096690, receiver=0x2506080, e=0x7fffb3025770) at kernel/qapplication.cpp:4528
#14 0x00007f39ac5a2583 in QApplication::notify (this=0x7fffb3027b40, receiver=0x2506080, e=0x7fffb3025770) at kernel/qapplication.cpp:4417
#15 0x00007f39b1186756 in KApplication::notify (this=0x7fffb3027b40, receiver=0x2506080, event=0x7fffb3025770) at ../../kdeui/kernel/kapplication.cpp:311
#16 0x00007f39ad21c30c in QCoreApplication::notifyInternal (this=0x7fffb3027b40, receiver=0x2506080, event=0x7fffb3025770) at kernel/qcoreapplication.cpp:915
#17 0x00007f39ac5e9c06 in sendSpontaneousEvent (event=0x7fffb3025770, receiver=0x2506080) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#18 QWidgetPrivate::drawWidget (this=0x13280c0, pdev=0x1e53a78, rgn=..., offset=..., flags=14, sharedPainter=0x0, backingStore=0x0) at kernel/qwidget.cpp:5594
#19 0x00007f39ac5ec425 in QWidgetPrivate::render (this=0x13280c0, target=0x1e53a78, targetOffset=..., sourceRegion=..., renderFlags=..., readyToRender=<optimized out>) at kernel/qwidget.cpp:5730
#20 0x00007f39ac5ec6a9 in QWidget::render (this=<optimized out>, target=<optimized out>, targetOffset=..., sourceRegion=..., renderFlags=...) at kernel/qwidget.cpp:5182
#21 0x00007f39b1a57f95 in KWin::PaintRedirector::performPendingPaint (this=0x1e53a50) at ../../kwin/paintredirector.cpp:55
#22 0x00007f39b19c6a4f in KWin::Client::ensureDecorationPixmapsPainted (this=0x2161400) at ../../kwin/client.cpp:573
#23 0x00007f39b1a4495d in KWin::SceneOpenGL::Window::performPaint (this=0x13b3410, mask=10, region=..., data=...) at ../../kwin/scene_opengl.cpp:542
#24 0x00007f39b1a2e77e in KWin::Scene::finalDrawWindow (this=<optimized out>, w=<optimized out>, mask=10, region=..., data=...) at ../../kwin/scene.cpp:454
#25 0x00007f39b1a4f5ba in KWin::EffectsHandlerImpl::drawWindow (this=0x1a8c0e0, w=0x1330ed0, mask=10, region=..., data=...) at ../../kwin/effects.cpp:310
#26 0x00007f398c7be677 in KWin::BlurEffect::drawWindow (this=<optimized out>, w=0x1330ed0, mask=10, region=..., data=...) at ../../../kwin/effects/blur/blur.cpp:405
#27 0x00007f39b1a4f559 in KWin::EffectsHandlerImpl::drawWindow (this=0x1a8c0e0, w=0x1330ed0, mask=10, region=..., data=...) at ../../kwin/effects.cpp:307
#28 0x00007f39afe54a6b in KWin::Effect::drawWindow (this=<optimized out>, w=0x1330ed0, mask=10, region=..., data=...) at ../../../kwin/libkwineffects/kwineffects.cpp:182
#29 0x00007f39b1a4f559 in KWin::EffectsHandlerImpl::drawWindow (this=0x1a8c0e0, w=0x1330ed0, mask=10, region=..., data=...) at ../../kwin/effects.cpp:307
#30 0x00007f39b1a2dbfb in KWin::Scene::finalPaintWindow (this=<optimized out>, w=0x1330ed0, mask=10, region=..., data=...) at ../../kwin/scene.cpp:439
#31 0x00007f39b1a4f83a in KWin::EffectsHandlerImpl::paintWindow (this=0x1a8c0e0, w=0x1330ed0, mask=10, region=..., data=...) at ../../kwin/effects.cpp:273
#32 0x00007f39afe54b6b in KWin::Effect::paintWindow (this=<optimized out>, w=0x1330ed0, mask=10, region=..., data=...) at ../../../kwin/libkwineffects/kwineffects.cpp:157
#33 0x00007f39b1a4f7d9 in KWin::EffectsHandlerImpl::paintWindow (this=0x1a8c0e0, w=0x1330ed0, mask=10, region=..., data=...) at ../../kwin/effects.cpp:270
#34 0x00007f39afe61ef8 in KWin::AnimationEffect::paintWindow (this=<optimized out>, w=0x1330ed0, mask=10, region=..., data=...) at ../../../kwin/libkwineffects/kwinanimationeffect.cpp:495
#35 0x00007f39b1a4f7d9 in KWin::EffectsHandlerImpl::paintWindow (this=0x1a8c0e0, w=0x1330ed0, mask=10, region=..., data=...) at ../../kwin/effects.cpp:270
#36 0x00007f39b1a30be6 in KWin::Scene::paintWindow (this=<optimized out>, w=0x13b3410, mask=10, region=..., quads=...) at ../../kwin/scene.cpp:348
#37 0x00007f39b1a2eed4 in KWin::Scene::paintSimpleScreen (this=0x15fb820, orig_mask=8, region=...) at ../../kwin/scene.cpp:334
#38 0x00007f39b1a2db42 in KWin::Scene::finalPaintScreen (this=0x15fb820, mask=8, region=..., data=...) at ../../kwin/scene.cpp:192
#39 0x00007f39b1a4fa07 in KWin::EffectsHandlerImpl::paintScreen (this=0x1a8c0e0, mask=8, region=..., data=...) at ../../kwin/effects.cpp:246
#40 0x00007f39afe54bd8 in KWin::Effect::paintScreen (this=<optimized out>, mask=8, region=..., data=...) at ../../../kwin/libkwineffects/kwineffects.cpp:142
#41 0x00007f39b1a4f9ab in KWin::EffectsHandlerImpl::paintScreen (this=0x1a8c0e0, mask=8, region=..., data=...) at ../../kwin/effects.cpp:243
#42 0x00007f39afe54bd8 in KWin::Effect::paintScreen (this=<optimized out>, mask=8, region=..., data=...) at ../../../kwin/libkwineffects/kwineffects.cpp:142
#43 0x00007f39b1a4f9ab in KWin::EffectsHandlerImpl::paintScreen (this=0x1a8c0e0, mask=8, region=..., data=...) at ../../kwin/effects.cpp:243
#44 0x00007f39b1a2fd16 in KWin::Scene::paintScreen (this=0x15fb820, mask=0x7fffb3026fb8, region=0x7fffb3027090) at ../../kwin/scene.cpp:146
#45 0x00007f39b1a45f2e in KWin::SceneOpenGL::paint (this=0x15fb820, damage=..., toplevels=...) at ../../kwin/scene_opengl_glx.cpp:481
#46 0x00007f39b1a28aba in performCompositing (this=0x120a6e0) at ../../kwin/composite.cpp:440
#47 KWin::Workspace::performCompositing (this=0x120a6e0) at ../../kwin/composite.cpp:398
#48 0x00007f39ad235659 in QObject::event (this=0x120a6e0, e=<optimized out>) at kernel/qobject.cpp:1157
#49 0x00007f39ac59d7b4 in notify_helper (e=0x7fffb3027760, receiver=0x120a6e0, this=0x1096690) at kernel/qapplication.cpp:4556
#50 QApplicationPrivate::notify_helper (this=0x1096690, receiver=0x120a6e0, e=0x7fffb3027760) at kernel/qapplication.cpp:4528
#51 0x00007f39ac5a2583 in QApplication::notify (this=0x7fffb3027b40, receiver=0x120a6e0, e=0x7fffb3027760) at kernel/qapplication.cpp:4417
#52 0x00007f39b1186756 in KApplication::notify (this=0x7fffb3027b40, receiver=0x120a6e0, event=0x7fffb3027760) at ../../kdeui/kernel/kapplication.cpp:311
#53 0x00007f39ad21c30c in QCoreApplication::notifyInternal (this=0x7fffb3027b40, receiver=0x120a6e0, event=0x7fffb3027760) at kernel/qcoreapplication.cpp:915
#54 0x00007f39ad24d6d2 in sendEvent (event=0x7fffb3027760, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#55 QTimerInfoList::activateTimers (this=0x1097228) at kernel/qeventdispatcher_unix.cpp:611
#56 0x00007f39ad24e194 in QEventDispatcherUNIX::processEvents (this=0xfefad0, flags=...) at kernel/qeventdispatcher_unix.cpp:930
#57 0x00007f39ac646b78 in QEventDispatcherX11::processEvents (this=0xfefad0, flags=...) at kernel/qeventdispatcher_x11.cpp:152
#58 0x00007f39ad21ae42 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#59 0x00007f39ad21b097 in QEventLoop::exec (this=0x7fffb3027ac0, flags=...) at kernel/qeventloop.cpp:204
#60 0x00007f39ad2203e7 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1187
#61 0x00007f39b19dcf43 in kdemain (argc=<optimized out>, argv=<optimized out>) at ../../kwin/main.cpp:545
#62 0x00007f39b15db76d in __libc_start_main (main=0x400630 <main(int, char**)>, argc=2, ubp_av=0x7fffb3028238, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffb3028228) at libc-start.c:226
#63 0x0000000000400661 in _start ()

Possible duplicates by query: bug 307076, bug 298693, bug 291433, bug 284718.

Reported using DrKonqi