Application: kwin (4.11.8)
KDE Platform Version: 4.12.4
Qt Version: 4.8.6
Operating System: Linux 3.14.2-200.fc20.x86_64 x86_64
Distribution: "Fedora release 20 (Heisenbug)"

-- Information about the crash:
- What I was doing when the application crashed:
Updated Fedora 20 w KDE to the latest version
Restarted

- Unusual behavior I noticed:
KWin crashed and the windows effects are broken (e.g. desktop Cube animation)
Trying to enable KWin (ctrl+shift+F12) crashes KWin again

The crash can be reproduced every time.

-- Backtrace:
Application: KWin (kwin), signal: Aborted
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7effd1f6c900 (LWP 2232))]

Thread 3 (Thread 0x7effc6f18700 (LWP 2234)):
#0  0x000000391f00c0c9 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007effd4be4bd4 in QWaitCondition::wait(QMutex*, unsigned long) () from /lib64/libQtCore.so.4
#2  0x00007effd4bd816a in QThreadPoolThread::run() () from /lib64/libQtCore.so.4
#3  0x00007effd4be46bf in QThreadPrivate::start(void*) () from /lib64/libQtCore.so.4
#4  0x000000391f007f33 in start_thread () from /lib64/libpthread.so.0
#5  0x000000391e4f4ded in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7effc6468700 (LWP 2257)):
#0  0x000000391f00c0c9 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007effd4be4bd4 in QWaitCondition::wait(QMutex*, unsigned long) () from /lib64/libQtCore.so.4
#2  0x00007effd4bd816a in QThreadPoolThread::run() () from /lib64/libQtCore.so.4
#3  0x00007effd4be46bf in QThreadPrivate::start(void*) () from /lib64/libQtCore.so.4
#4  0x000000391f007f33 in start_thread () from /lib64/libpthread.so.0
#5  0x000000391e4f4ded in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7effd1f6c900 (LWP 2232)):
[KCrash Handler]
#5  0x000000391e435c39 in raise () from /lib64/libc.so.6
#6  0x000000391e437348 in abort () from /lib64/libc.so.6
#7  0x000000391e42eb96 in __assert_fail_base () from /lib64/libc.so.6
#8  0x000000391e42ec42 in __assert_fail () from /lib64/libc.so.6
#9  0x00007effc4d545b5 in brw_get_graphics_reset_status () from /usr/lib64/dri/i965_dri.so
#10 0x00007effc4ad38b0 in _mesa_GetGraphicsResetStatusARB () from /usr/lib64/dri/i965_dri.so
#11 0x0000003d7bae28b9 in KWin::SceneOpenGL::paint(QRegion, QList<KWin::Toplevel*>) () from /lib64/libkdeinit4_kwin.so
#12 0x0000003d7bac65db in KWin::Compositor::performCompositing() () from /lib64/libkdeinit4_kwin.so
#13 0x0000003d7bac799f in KWin::Compositor::slotCompositingOptionsInitialized() () from /lib64/libkdeinit4_kwin.so
#14 0x0000003d7ba4c18d in KWin::Compositor::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) [clone .part.73] () from /lib64/libkdeinit4_kwin.so
#15 0x00007effd4d03938 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /lib64/libQtCore.so.4
#16 0x00007effd4bd4840 in QFutureWatcherBase::event(QEvent*) () from /lib64/libQtCore.so.4
#17 0x00007effd404eebc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib64/libQtGui.so.4
#18 0x00007effd4055825 in QApplication::notify(QObject*, QEvent*) () from /lib64/libQtGui.so.4
#19 0x000000342ae4ab0a in KApplication::notify(QObject*, QEvent*) () from /lib64/libkdeui.so.5
#20 0x00007effd4ceeebd in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /lib64/libQtCore.so.4
#21 0x00007effd4cf20d5 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /lib64/libQtCore.so.4
#22 0x00007effd40f152c in QEventDispatcherX11::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQtGui.so.4
#23 0x00007effd4ced95f in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQtCore.so.4
#24 0x00007effd4cedcad in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQtCore.so.4
#25 0x00007effd4cf3399 in QCoreApplication::exec() () from /lib64/libQtCore.so.4
#26 0x0000003d7ba7e411 in kdemain () from /lib64/libkdeinit4_kwin.so
#27 0x000000391e421d65 in __libc_start_main () from /lib64/libc.so.6
#28 0x0000000000400a01 in _start ()

Possible duplicates by query: bug 334117, bug 333088, bug 332970, bug 332784.

Reported using DrKonqi