Application: kwin (4.7.1 (4.7.1))
KDE Platform Version: 4.7.1 (4.7.1)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-12-generic-pae i686
Distribution: Ubuntu 11.10

-- Information about the crash:
- What I was doing when the application crashed:
I was watching a movie with VLC and surfed in the net with the Chromium Webbrowser, til some graphics error appear(window frames were gettin blurred and buggy) and the kwin process crashed.

The crash can be reproduced some of the time.

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
[Current thread is 1 (Thread 0xb1feea60 (LWP 6110))]

Thread 3 (Thread 0xafd04b70 (LWP 6114)):
#0  0xb31e6d10 in clock_gettime () from /lib/i386-linux-gnu/librt.so.1
#1  0xb63a37d5 in do_gettime (frac=0xafd04130, sec=0xafd04128) at tools/qelapsedtimer_unix.cpp:123
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#3  0xb64764b6 in QTimerInfoList::updateCurrentTime (this=0x868ba60) at kernel/qeventdispatcher_unix.cpp:339
#4  0xb647680a in QTimerInfoList::timerWait (this=0x868ba60, tm=...) at kernel/qeventdispatcher_unix.cpp:442
#5  0xb64784de in QEventDispatcherUNIX::processEvents (this=0x868b3b0, flags=...) at kernel/qeventdispatcher_unix.cpp:905
#6  0xb64461dd in QEventLoop::processEvents (this=0xafd042a0, flags=...) at kernel/qeventloop.cpp:149
#7  0xb6446421 in QEventLoop::exec (this=0xafd042a0, flags=...) at kernel/qeventloop.cpp:201
#8  0xb634990b in QThread::exec (this=0x868a3b8) at thread/qthread.cpp:498
#9  0xb6426e2d in QInotifyFileSystemWatcherEngine::run (this=0x868a3b8) at io/qfilesystemwatcher_inotify.cpp:248
#10 0xb634c7b3 in QThreadPrivate::start (arg=0x868a3b8) at thread/qthread_unix.cpp:331
#11 0xb32bed31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#12 0xb76980ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 2 (Thread 0xaf467b70 (LWP 6115)):
#0  0xb7899424 in __kernel_vsyscall ()
#1  0xb32c2a5c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0xb76a5cfc in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0xb6d4b9a9 in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#4  0xb6d4b9ef in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#5  0xb32bed31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#6  0xb76980ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 1 (Thread 0xb1feea60 (LWP 6110)):
[KCrash Handler]
#7  data (this=0xa) at ../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:135
#8  QGraphicsItemPrivate::invalidateParentGraphicsEffectsRecursively (this=0x854bf00) at graphicsview/qgraphicsitem.cpp:5378
#9  0xb5fd786f in update (rect=..., this=0x854bef8) at graphicsview/qgraphicsitem.cpp:5688
#10 QGraphicsItem::update (this=0x854bef8, rect=...) at graphicsview/qgraphicsitem.cpp:5681
#11 0xb0def871 in ?? () from /usr/lib/kde4/kwin3_aurorae.so
#12 0xb5fd480f in QGraphicsItem::sceneEvent (this=0x854bef8, event=0xbfb10c98) at graphicsview/qgraphicsitem.cpp:6730
#13 0xb6031806 in QGraphicsWidget::sceneEvent (this=0x854bef0, event=0xbfb10c98) at graphicsview/qgraphicswidget.cpp:1223
#14 0xb5ffdc7e in sendEvent (event=0xbfb10c98, item=0x854bef8, this=<optimized out>) at graphicsview/qgraphicsscene.cpp:1217
#15 QGraphicsScenePrivate::sendEvent (this=0x882f530, item=0x854bef8, event=0xbfb10c98) at graphicsview/qgraphicsscene.cpp:1193
#16 0xb5ffe8ab in QGraphicsScenePrivate::sendMouseEvent (this=0x882f530, mouseEvent=0xbfb10c98) at graphicsview/qgraphicsscene.cpp:1291
#17 0xb5fff2c7 in QGraphicsScene::mouseReleaseEvent (this=0x880d5c0, mouseEvent=0xbfb10c98) at graphicsview/qgraphicsscene.cpp:4121
#18 0xb0df5d62 in ?? () from /usr/lib/kde4/kwin3_aurorae.so
#19 0xb600daec in QGraphicsScene::event (this=0x880d5c0, event=0xbfb10c98) at graphicsview/qgraphicsscene.cpp:3453
#20 0xb5972d54 in notify_helper (e=0xbfb10c98, receiver=0x880d5c0, this=0x83124b8) at kernel/qapplication.cpp:4486
#21 QApplicationPrivate::notify_helper (this=0x83124b8, receiver=0x880d5c0, e=0xbfb10c98) at kernel/qapplication.cpp:4458
#22 0xb5978103 in QApplication::notify (this=0xbfb10c98, receiver=0x880d5c0, e=0xbfb10c98) at kernel/qapplication.cpp:3886
#23 0xb7373721 in KApplication::notify (this=0xbfb11970, receiver=0x880d5c0, event=0xbfb10c98) at ../../kdeui/kernel/kapplication.cpp:311
#24 0xb77a0fdf in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#25 0xb644719e in QCoreApplication::notifyInternal (this=0xbfb11970, receiver=0x880d5c0, event=0xbfb10c98) at kernel/qcoreapplication.cpp:787
#26 0xb5970b6d in sendSpontaneousEvent (event=0xbfb10c98, receiver=0x880d5c0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#27 qt_sendSpontaneousEvent (receiver=0x880d5c0, event=0xbfb10c98) at kernel/qapplication.cpp:5480
#28 0xb602c978 in QGraphicsView::mouseReleaseEvent (this=0x8838c70, event=0xbfb112ac) at graphicsview/qgraphicsview.cpp:3336
#29 0xb59ccf98 in QWidget::event (this=0x8838c70, event=0xbfb112ac) at kernel/qwidget.cpp:8295
#30 0xb5dd2235 in QFrame::event (this=0x8838c70, e=0xbfb112ac) at widgets/qframe.cpp:557
#31 0xb5e647d1 in QAbstractScrollArea::viewportEvent (this=0x8838c70, e=0xbfb112ac) at widgets/qabstractscrollarea.cpp:1043
#32 0xb602fcb4 in QGraphicsView::viewportEvent (this=0x8838c70, event=0xbfb112ac) at graphicsview/qgraphicsview.cpp:2864
#33 0xb5e66ee6 in viewportEvent (this=<optimized out>, event=0xbfb112ac) at widgets/qabstractscrollarea_p.h:100
#34 eventFilter (e=0xbfb112ac, this=<optimized out>, o=<optimized out>) at widgets/qabstractscrollarea_p.h:116
#35 QAbstractScrollAreaFilter::eventFilter (this=0x866efd0, o=0x8662730, e=0xbfb112ac) at widgets/qabstractscrollarea_p.h:115
#36 0xb6447336 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0x83124b8, receiver=0x8662730, event=0xbfb112ac) at kernel/qcoreapplication.cpp:902
#37 0xb5972d22 in notify_helper (e=0xbfb112ac, receiver=0x8662730, this=0x83124b8) at kernel/qapplication.cpp:4482
#38 QApplicationPrivate::notify_helper (this=0x83124b8, receiver=0x8662730, e=0xbfb112ac) at kernel/qapplication.cpp:4458
#39 0xb5978dbb in QApplication::notify (this=0x83124b8, receiver=0x8662730, e=0xbfb112ac) at kernel/qapplication.cpp:4047
#40 0xb7373721 in KApplication::notify (this=0xbfb11970, receiver=0x8662730, event=0xbfb112ac) at ../../kdeui/kernel/kapplication.cpp:311
#41 0xb77a0fdf in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#42 0xb644719e in QCoreApplication::notifyInternal (this=0xbfb11970, receiver=0x8662730, event=0xbfb112ac) at kernel/qcoreapplication.cpp:787
#43 0xb5973d15 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#44 QApplicationPrivate::sendMouseEvent (receiver=0x8662730, event=0xbfb112ac, alienWidget=0x0, nativeWidget=0x8662730, buttonDown=0xb62ddeb4, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3146
#45 0xb5a002c4 in QETWidget::translateMouseEvent (this=0x8662730, event=0xbfb1172c) at kernel/qapplication_x11.cpp:4568
#46 0xb59fee4d in QApplication::x11ProcessEvent (this=0xbfb11970, event=0xbfb1172c) at kernel/qapplication_x11.cpp:3690
#47 0xb5a2be38 in QEventDispatcherX11::processEvents (this=0x82df218, flags=...) at kernel/qeventdispatcher_x11.cpp:132
#48 0xb64461dd in QEventLoop::processEvents (this=0xbfb118b4, flags=...) at kernel/qeventloop.cpp:149
#49 0xb6446421 in QEventLoop::exec (this=0xbfb118b4, flags=...) at kernel/qeventloop.cpp:201
#50 0xb644b19d in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#51 0xb59708f4 in QApplication::exec () at kernel/qapplication.cpp:3760
#52 0xb77a3c0d in kdemain () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#53 0x0804850b in ?? ()
#54 0xb75df113 in __libc_start_main () from /lib/i386-linux-gnu/libc.so.6
#55 0x08048531 in _start ()

Possible duplicates by query: bug 242116.

Reported using DrKonqi