Application: kwin (4.11.6)
KDE Platform Version: 4.11.5
Qt Version: 4.8.5
Operating System: Linux 3.11.10-7-default i686
Distribution: "openSUSE 13.1 (Bottle) (i586)"

-- Information about the crash:
- What I was doing when the application crashed:
sdfdsffffffffffffffffffffffffffffffff
- Unusual behavior I noticed:
fdsssssssssssssssssssss
- Custom settings of the application:

sdffffffffffffffffffffffffffff

The crash can be reproduced sometimes.

-- Backtrace:
Application: KWin (kwin), signal: Aborted
Using host libthread_db library "/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0xaef8b7c0 (LWP 2494))]

Thread 2 (Thread 0xa9763b40 (LWP 2501)):
#0  0xb7738430 in __kernel_vsyscall ()
#1  0xb5c95f2c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0xb74bb8cc in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libc.so.6
#3  0xb6edc832 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=this@entry=0xb6fd87e0 <QTWTF::pageheap_memory>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#4  0xb6edc87f in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=0xb6fd87e0 <QTWTF::pageheap_memory>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#5  0xb5c9207a in start_thread () from /lib/libpthread.so.0
#6  0xb74ae80e in clone () from /lib/libc.so.6

Thread 1 (Thread 0xaef8b7c0 (LWP 2494)):
[KCrash Handler]
#7  0xb7738430 in __kernel_vsyscall ()
#8  0xb73ee6a6 in raise () from /lib/libc.so.6
#9  0xb73efe33 in abort () from /lib/libc.so.6
#10 0xb742dfd8 in __libc_message () from /lib/libc.so.6
#11 0xb743418a in malloc_printerr () from /lib/libc.so.6
#12 0xb7434dcc in _int_free () from /lib/libc.so.6
#13 0xb51254bf in operator delete(void*) () from /usr/lib/libstdc++.so.6
#14 0xb75e88a5 in node_destruct (this=0xbfb3be58, to=0x9650864, from=0x9650864) at /usr/include/QtCore/qlist.h:431
#15 QList<KWin::WindowQuad>::free (data=0x9650850, this=0xbfb3be58) at /usr/include/QtCore/qlist.h:757
#16 0xb75e9e0f in QList<KWin::WindowQuad>::~QList (this=this@entry=0xbfb3be58, __in_chrg=<optimized out>) at /usr/include/QtCore/qlist.h:732
#17 0xb7647a9b in ~WindowQuadList (this=0xbfb3be58, __in_chrg=<optimized out>) at /usr/src/debug/kde-workspace-4.11.6/kwin/libkwineffects/kwineffects.h:1806
#18 KWin::SceneOpenGL2Window::performPaint (this=this@entry=0x9431fa0, mask=mask@entry=9, region=..., data=...) at /usr/src/debug/kde-workspace-4.11.6/kwin/scene_opengl.cpp:1467
#19 0xb764b91a in KWin::SceneOpenGL2::performPaintWindow (this=0x949f638, w=0x941c5b8, mask=9, region=..., data=...) at /usr/src/debug/kde-workspace-4.11.6/kwin/scene_opengl.cpp:784
#20 0xb764bafe in KWin::SceneOpenGL2::finalDrawWindow (this=0x949f638, w=w@entry=0x941c5b8, mask=mask@entry=9, region=..., data=...) at /usr/src/debug/kde-workspace-4.11.6/kwin/scene_opengl.cpp:770
#21 0xb7658928 in KWin::EffectsHandlerImpl::drawWindow (this=0x94786d8, w=0x941c5b8, mask=9, region=..., data=...) at /usr/src/debug/kde-workspace-4.11.6/kwin/effects.cpp:455
#22 0xa89584f3 in KWin::BlurEffect::drawWindow (this=this@entry=0x94518b8, w=w@entry=0x941c5b8, mask=mask@entry=9, region=..., data=...) at /usr/src/debug/kde-workspace-4.11.6/kwin/effects/blur/blur.cpp:428
#23 0xb76588d2 in KWin::EffectsHandlerImpl::drawWindow (this=0x94786d8, w=w@entry=0x941c5b8, mask=mask@entry=9, region=..., data=...) at /usr/src/debug/kde-workspace-4.11.6/kwin/effects.cpp:452
#24 0xb7630ce6 in KWin::Scene::finalPaintWindow (this=0x949f638, w=w@entry=0x941c5b8, mask=mask@entry=9, region=..., data=...) at /usr/src/debug/kde-workspace-4.11.6/kwin/scene.cpp:584
#25 0xb7658843 in KWin::EffectsHandlerImpl::paintWindow (this=0x94786d8, w=w@entry=0x941c5b8, mask=mask@entry=9, region=..., data=...) at /usr/src/debug/kde-workspace-4.11.6/kwin/effects.cpp:418
#26 0xb7381826 in KWin::Effect::paintWindow (this=this@entry=0x94518b8, w=w@entry=0x941c5b8, mask=mask@entry=9, region=..., data=...) at /usr/src/debug/kde-workspace-4.11.6/kwin/libkwineffects/kwineffects.cpp:537
#27 0xb76587f2 in KWin::EffectsHandlerImpl::paintWindow (this=0x94786d8, w=0x941c5b8, mask=mask@entry=9, region=..., data=...) at /usr/src/debug/kde-workspace-4.11.6/kwin/effects.cpp:415
#28 0xb7634f7a in KWin::Scene::paintWindow (this=0x949f638, w=0x9431fa0, mask=9, region=..., quads=...) at /usr/src/debug/kde-workspace-4.11.6/kwin/scene.cpp:416
#29 0xb7633079 in KWin::Scene::paintSimpleScreen (this=this@entry=0x949f638, orig_mask=orig_mask@entry=8, region=...) at /usr/src/debug/kde-workspace-4.11.6/kwin/scene.cpp:378
#30 0xb7630b87 in KWin::Scene::finalPaintScreen (this=0x949f638, mask=mask@entry=8, region=..., data=...) at /usr/src/debug/kde-workspace-4.11.6/kwin/scene.cpp:198
#31 0xb7658763 in KWin::EffectsHandlerImpl::paintScreen (this=0x94786d8, mask=mask@entry=8, region=..., data=...) at /usr/src/debug/kde-workspace-4.11.6/kwin/effects.cpp:375
#32 0xb73817be in KWin::Effect::paintScreen (this=this@entry=0x94518b8, mask=mask@entry=8, region=..., data=...) at /usr/src/debug/kde-workspace-4.11.6/kwin/libkwineffects/kwineffects.cpp:522
#33 0xb765871a in KWin::EffectsHandlerImpl::paintScreen (this=0x94786d8, mask=8, region=..., data=...) at /usr/src/debug/kde-workspace-4.11.6/kwin/effects.cpp:372
#34 0xb76335cc in KWin::Scene::paintScreen (this=this@entry=0x949f638, mask=mask@entry=0xbfb3c650, damage=..., repaint=..., updateRegion=updateRegion@entry=0xbfb3c654, validRegion=validRegion@entry=0xbfb3c658) at /usr/src/debug/kde-workspace-4.11.6/kwin/scene.cpp:148
#35 0xb7648d07 in KWin::SceneOpenGL::paint (this=0x949f638, damage=..., toplevels=...) at /usr/src/debug/kde-workspace-4.11.6/kwin/scene_opengl.cpp:389
#36 0xb7629aa0 in KWin::Compositor::performCompositing (this=0x940a8d0) at /usr/src/debug/kde-workspace-4.11.6/kwin/composite.cpp:618
#37 0xb5e3e11c in QObject::event (this=0x940a8d0, e=0xbfb3ca60) at kernel/qobject.cpp:1165
#38 0xb53114b4 in QApplicationPrivate::notify_helper (this=0x92958e0, receiver=0x940a8d0, e=0xbfb3ca60) at kernel/qapplication.cpp:4562
#39 0xb5317ee3 in QApplication::notify (this=0xbfb3cd88, receiver=receiver@entry=0x940a8d0, e=e@entry=0xbfb3ca60) at kernel/qapplication.cpp:4348
#40 0xb6b28cb4 in KApplication::notify (this=this@entry=0xbfb3cd88, receiver=receiver@entry=0x940a8d0, event=event@entry=0xbfb3ca60) at /usr/src/debug/kdelibs-4.11.5/kdeui/kernel/kapplication.cpp:311
#41 0xb75d9869 in KWin::Application::notify (this=0xbfb3cd88, o=0x940a8d0, e=0xbfb3ca60) at /usr/src/debug/kde-workspace-4.11.6/kwin/main.cpp:431
#42 0xb5e24fba in QCoreApplication::notifyInternal (this=0xbfb3cd88, receiver=0x940a8d0, event=event@entry=0xbfb3ca60) at kernel/qcoreapplication.cpp:949
#43 0xb5e573af in sendEvent (event=0xbfb3ca60, receiver=<optimized out>) at kernel/qcoreapplication.h:231
#44 QTimerInfoList::activateTimers (this=0x929609c) at kernel/qeventdispatcher_unix.cpp:636
#45 0xb5e57a45 in QEventDispatcherUNIX::activateTimers (this=<optimized out>, this@entry=0x91ec9a0) at kernel/qeventdispatcher_unix.cpp:893
#46 0xb5e582cc in QEventDispatcherUNIX::processEvents (this=this@entry=0x91ec9a0, flags=...) at kernel/qeventdispatcher_unix.cpp:955
#47 0xb53c1fab in QEventDispatcherX11::processEvents (this=0x91ec9a0, flags=...) at kernel/qeventdispatcher_x11.cpp:152
#48 0xb5e23a03 in QEventLoop::processEvents (this=this@entry=0xbfb3cc88, flags=...) at kernel/qeventloop.cpp:149
#49 0xb5e23d29 in QEventLoop::exec (this=this@entry=0xbfb3cc88, flags=...) at kernel/qeventloop.cpp:204
#50 0xb5e294fe in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1221
#51 0xb530f944 in QApplication::exec () at kernel/qapplication.cpp:3823
#52 0xb75dac0e in kdemain (argc=3, argv=0xbfb3ce74) at /usr/src/debug/kde-workspace-4.11.6/kwin/main.cpp:597
#53 0x080485bb in main (argc=3, argv=0xbfb3ce74) at /usr/src/debug/kde-workspace-4.11.6/build/kwin/kwin_dummy.cpp:3

Reported using DrKonqi