Application: kwin_x11 (5.14.3)

Qt Version: 5.11.2
Frameworks Version: 5.51.0
Operating System: Linux 4.18.16-arch1-1-ARCH x86_64
Distribution (Platform): Archlinux Packages

-- Information about the crash:
- What I was doing when the application crashed:
KWin crashed after Urho3D opened//////////////////////

-- Backtrace:
Application: KWin (kwin_x11), signal: Aborted
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f75ce30cfc0 (LWP 681))]

Thread 6 (Thread 0x7f75b5a21700 (LWP 2626)):
#0  0x00007f75d8bcfd16 in ppoll () at /usr/lib/libc.so.6
#1  0x00007f75d77d6e9b in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/libQt5Core.so.5
#2  0x00007f75d77d838b in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#3  0x00007f75d77868cc in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f75d75cfeb9 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00007f75d5bec859 in  () at /usr/lib/libQt5Qml.so.5
#6  0x00007f75d75d9f65 in  () at /usr/lib/libQt5Core.so.5
#7  0x00007f75d63c0a9d in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f75d8bdab23 in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7f75b5220700 (LWP 765)):
#0  0x00007f75d63c6afc in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f75d70be20c in  () at /usr/lib/libQt5Script.so.5
#2  0x00007f75d70be229 in  () at /usr/lib/libQt5Script.so.5
#3  0x00007f75d63c0a9d in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f75d8bdab23 in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7f75b75d3700 (LWP 747)):
#0  0x00007f75d63c6afc in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f75b78221ac in  () at /usr/lib/dri/i965_dri.so
#2  0x00007f75b7821ee8 in  () at /usr/lib/dri/i965_dri.so
#3  0x00007f75d63c0a9d in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f75d8bdab23 in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7f75c63a8700 (LWP 737)):
#0  0x00007f75d8bcfd16 in ppoll () at /usr/lib/libc.so.6
#1  0x00007f75d77d6e9b in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/libQt5Core.so.5
#2  0x00007f75d77d838b in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#3  0x00007f75d77868cc in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f75d75cfeb9 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00007f75d5bec859 in  () at /usr/lib/libQt5Qml.so.5
#6  0x00007f75d75d9f65 in  () at /usr/lib/libQt5Core.so.5
#7  0x00007f75d63c0a9d in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f75d8bdab23 in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7f75c7fff700 (LWP 726)):
#0  0x00007f75d8bcfd16 in ppoll () at /usr/lib/libc.so.6
#1  0x00007f75d77d6e9b in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/libQt5Core.so.5
#2  0x00007f75d77d838b in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#3  0x00007f75d77868cc in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f75d75cfeb9 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00007f75d56c3ba6 in  () at /usr/lib/libQt5DBus.so.5
#6  0x00007f75d75d9f65 in  () at /usr/lib/libQt5Core.so.5
#7  0x00007f75d63c0a9d in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f75d8bdab23 in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7f75ce30cfc0 (LWP 681)):
[KCrash Handler]
#6  0x00007f75d8b16d7f in raise () at /usr/lib/libc.so.6
#7  0x00007f75d8b01672 in abort () at /usr/lib/libc.so.6
#8  0x00007f75d8b01548 in _nl_load_domain.cold.0 () at /usr/lib/libc.so.6
#9  0x00007f75d8b0f396 in  () at /usr/lib/libc.so.6
#10 0x00007f75d625fc30 in  () at /usr/lib/libepoxy.so.0
#11 0x00007f75d62b8520 in  () at /usr/lib/libepoxy.so.0
#12 0x00007f75d62a641a in  () at /usr/lib/libepoxy.so.0
#13 0x00007f75d7241149 in  () at /usr/lib/libkwin4_effect_builtins.so.1
#14 0x00007f75d72411d9 in  () at /usr/lib/libkwin4_effect_builtins.so.1
#15 0x00007f75d77af9bb in QObjectPrivate::deleteChildren() () at /usr/lib/libQt5Core.so.5
#16 0x00007f75d77b8955 in QObject::~QObject() () at /usr/lib/libQt5Core.so.5
#17 0x00007f75d723df09 in  () at /usr/lib/libkwin4_effect_builtins.so.1
#18 0x00007f75d895fb3a in KWin::EffectsHandlerImpl::unloadAllEffects() () at /usr/lib/libkwin.so.5
#19 0x00007f75d895fbd8 in KWin::EffectsHandlerImpl::~EffectsHandlerImpl() () at /usr/lib/libkwin.so.5
#20 0x00007f75cc2b7199 in  () at /usr/lib/qt/plugins/org.kde.kwin.platforms/KWinX11Platform.so
#21 0x00007f75cc2b7269 in  () at /usr/lib/qt/plugins/org.kde.kwin.platforms/KWinX11Platform.so
#22 0x00007f75d894045f in  () at /usr/lib/libkwin.so.5
#23 0x00007f75d8940a1d in KWin::Compositor::suspend(KWin::Compositor::SuspendReason) () at /usr/lib/libkwin.so.5
#24 0x00007f75d77b2352 in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#25 0x00007f75d8101e14 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#26 0x00007f75d81096e1 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#27 0x00007f75d7787c39 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#28 0x00007f75d778accc in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt5Core.so.5
#29 0x00007f75d77d81fd in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#30 0x00007f75cdf3505e in  () at /usr/lib/libQt5XcbQpa.so.5
#31 0x00007f75d77868cc in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#32 0x00007f75d778ebc6 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#33 0x00007f75d8cacb26 in kdemain () at /usr/lib/libkdeinit5_kwin_x11.so
#34 0x00007f75d8b03223 in __libc_start_main () at /usr/lib/libc.so.6
#35 0x000055c179e3805e in _start ()
[Inferior 1 (process 681) detached]

Reported using DrKonqi