Application: kwin_x11 (5.8.4)

Qt Version: 5.7.0
Frameworks Version: 5.28.0
Operating System: Linux 4.8.12-1-default x86_64
Distribution: "openSUSE Tumbleweed"

-- Information about the crash:
- What I was doing when the application crashed: system upgrade after the upgrade perform system reboot.

- Unusual behavior I noticed:KWIN often freeze unexpectedly. sometimes after system startup or during operations. it will freeze for hours before I'd to manually shutdown the system.

The crash can be reproduced sometimes.

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f31031df940 (LWP 1915))]

Thread 5 (Thread 0x7f30c3790700 (LWP 2060)):
#0  0x00007f30fbe7810f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f30ff1a7834 in  () at /usr/lib64/libQt5Script.so.5
#2  0x00007f30ff1a7879 in  () at /usr/lib64/libQt5Script.so.5
#3  0x00007f30fbe72454 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f3102b7539f in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f30d37ff700 (LWP 1994)):
[KCrash Handler]
#6  0x00007f3100182244 in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007f310011f706 in QLockFile::tryLock(int) () at /usr/lib64/libQt5Core.so.5
#8  0x00007f3101f2c2c9 in  () at /usr/lib64/libKF5ConfigCore.so.5
#9  0x00007f3101f160b0 in KConfig::sync() () at /usr/lib64/libKF5ConfigCore.so.5
#10 0x00007f30e26d4bf5 in  () at /usr/lib64/qt5/plugins/org.kde.kwin.platforms/KWinX11Platform.so
#11 0x00007f310021b21e in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#12 0x00007f3100227828 in QTimer::timerEvent(QTimerEvent*) () at /usr/lib64/libQt5Core.so.5
#13 0x00007f310021bd13 in QObject::event(QEvent*) () at /usr/lib64/libQt5Core.so.5
#14 0x00007f3100ee492c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#15 0x00007f3100eec0e1 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#16 0x00007f31001ef200 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#17 0x00007f310024271e in QTimerInfoList::activateTimers() () at /usr/lib64/libQt5Core.so.5
#18 0x00007f3100240688 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#19 0x00007f31001ed1ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#20 0x00007f310001b8b3 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#21 0x00007f3100020558 in  () at /usr/lib64/libQt5Core.so.5
#22 0x00007f30fbe72454 in start_thread () at /lib64/libpthread.so.0
#23 0x00007f3102b7539f in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f30e0ec2700 (LWP 1990)):
#0  0x00007ffc13265b12 in clock_gettime ()
#1  0x00007f3102b82246 in clock_gettime () at /lib64/libc.so.6
#2  0x00007f31000c56e1 in  () at /usr/lib64/libQt5Core.so.5
#3  0x00007f3100241419 in QTimerInfoList::updateCurrentTime() () at /usr/lib64/libQt5Core.so.5
#4  0x00007f31002419c5 in QTimerInfoList::timerWait(timespec&) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f3100240704 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f31001ed1ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#7  0x00007f310001b8b3 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#8  0x00007f30fa9a3a75 in  () at /usr/lib64/libQt5Qml.so.5
#9  0x00007f3100020558 in  () at /usr/lib64/libQt5Core.so.5
#10 0x00007f30fbe72454 in start_thread () at /lib64/libpthread.so.0
#11 0x00007f3102b7539f in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f30ebab0700 (LWP 1960)):
#0  0x00007f3102b6c68d in poll () at /lib64/libc.so.6
#1  0x00007f30f764d876 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f30f764d98c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f310024379b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f31001ed1ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f310001b8b3 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f30f9b7c3e5 in  () at /usr/lib64/libQt5DBus.so.5
#7  0x00007f3100020558 in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f30fbe72454 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f3102b7539f in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f31031df940 (LWP 1915)):
#0  0x00007f30fbe7810f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f310002140b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f310001a2f3 in QSemaphore::acquire(int) () at /usr/lib64/libQt5Core.so.5
#3  0x00007f310021b11e in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f310021b86f in QObject::destroyed(QObject*) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f31002224f5 in QObject::~QObject() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f30fa273063 in  () at /usr/lib64/libKF5GlobalAccel.so.5
#7  0x00007f31002196d1 in QObjectPrivate::deleteChildren() () at /usr/lib64/libQt5Core.so.5
#8  0x00007f3100222a4f in QObject::~QObject() () at /usr/lib64/libQt5Core.so.5
#9  0x00007f30fa2645e9 in  () at /usr/lib64/libKF5GlobalAccel.so.5
#10 0x00007f3102ac2ea0 in __run_exit_handlers () at /lib64/libc.so.6
#11 0x00007f3102ac2efa in  () at /lib64/libc.so.6
#12 0x00007f30f9563735 in _XDefaultIOError () at /usr/lib64/libX11.so.6
#13 0x00007f30e95331fe in  () at /usr/lib64/libQt5XcbQpa.so.5
#14 0x00007f30f956396e in _XIOError () at /usr/lib64/libX11.so.6
#15 0x00007f30f9560c88 in  () at /usr/lib64/libX11.so.6
#16 0x00007f30f9561465 in _XFlush () at /usr/lib64/libX11.so.6
#17 0x00007f30f9563ff5 in _XGetRequest () at /usr/lib64/libX11.so.6
#18 0x00007f30f8815153 in  () at /usr/lib64/libGL.so.1
#19 0x00007f30f88154f7 in  () at /usr/lib64/libGL.so.1
#20 0x00007f30d2a8649a in  () at /usr/lib64/dri/i965_dri.so
#21 0x00007f30d2a869d1 in  () at /usr/lib64/dri/i965_dri.so
#22 0x00007f30d2a879b8 in  () at /usr/lib64/dri/i965_dri.so
#23 0x00007f30d285d57a in  () at /usr/lib64/dri/i965_dri.so
#24 0x00007f30fb7f6f11 in KWin::GLVertexBuffer::draw(QRegion const&, unsigned int, int, int, bool) () at /usr/lib64/libkwinglutils.so.9
#25 0x00007f30fb7f7337 in KWin::GLVertexBuffer::render(QRegion const&, unsigned int, bool) () at /usr/lib64/libkwinglutils.so.9
#26 0x00007f30fb7f73ed in KWin::GLVertexBuffer::render(unsigned int) () at /usr/lib64/libkwinglutils.so.9
#27 0x00007f310272b641 in  () at /usr/lib64/libkwin.so.5
#28 0x00007f3102730e45 in KWin::SceneOpenGL::paintBackground(QRegion) () at /usr/lib64/libkwin.so.5
#29 0x00007f31027197f5 in KWin::Scene::paintSimpleScreen(int, QRegion) () at /usr/lib64/libkwin.so.5
#30 0x00007f310272b593 in  () at /usr/lib64/libkwin.so.5
#31 0x00007f3102719d94 in KWin::Scene::finalPaintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib64/libkwin.so.5
#32 0x00007f31027484af in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib64/libkwin.so.5
#33 0x00007f3102719a1d in KWin::Scene::paintScreen(int*, QRegion const&, QRegion const&, QRegion*, QRegion*, QMatrix4x4 const&) () at /usr/lib64/libkwin.so.5
#34 0x00007f3102731936 in KWin::SceneOpenGL::paint(QRegion, QList<KWin::Toplevel*>) () at /usr/lib64/libkwin.so.5
#35 0x00007f310270c2fe in KWin::Compositor::performCompositing() () at /usr/lib64/libkwin.so.5
#36 0x00007f310021bd13 in QObject::event(QEvent*) () at /usr/lib64/libQt5Core.so.5
#37 0x00007f3100ee492c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#38 0x00007f3100eec0e1 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#39 0x00007f31001ef200 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#40 0x00007f310024271e in QTimerInfoList::activateTimers() () at /usr/lib64/libQt5Core.so.5
#41 0x00007f3100240688 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#42 0x00007f30e95ae54d in  () at /usr/lib64/libQt5XcbQpa.so.5
#43 0x00007f31001ed1ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#44 0x00007f31001f595c in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#45 0x00007f3102e34a56 in kdemain () at /usr/lib64/libkdeinit5_kwin_x11.so
#46 0x00007f3102aac291 in __libc_start_main () at /lib64/libc.so.6
#47 0x00000000004006ea in _start ()

Reported using DrKonqi