Application: kwin_x11 (5.14.3)

Qt Version: 5.11.2
Frameworks Version: 5.51.0
Operating System: Linux 4.19.1-1-default x86_64
Distribution: "openSUSE Tumbleweed"

-- Information about the crash:
- What I was doing when the application crashed:

Play any video with ffplay. Works every time.

I'm using OpenSuse Tumbleweed.

The crash can be reproduced every time.

-- Backtrace:
Application: KWin (kwin_x11), signal: Aborted
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f9adf1d9d00 (LWP 2845))]

Thread 6 (Thread 0x7f9ac4ed7700 (LWP 2967)):
#0  0x00007f9ae55644dc in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f9ae604d01a in  () at /usr/lib64/libQt5Script.so.5
#2  0x00007f9ae604d03b in  () at /usr/lib64/libQt5Script.so.5
#3  0x00007f9ae555e554 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f9ae7bdeccf in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7f9ac7306700 (LWP 2949)):
#0  0x00007f9ae55644dc in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f9ac774df5b in  () at /usr/lib64/dri/i965_dri.so
#2  0x00007f9ac774dc87 in  () at /usr/lib64/dri/i965_dri.so
#3  0x00007f9ae555e554 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f9ae7bdeccf in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f9ad5de5700 (LWP 2938)):
#0  0x00007f9ae7bd43c6 in ppoll () at /lib64/libc.so.6
#1  0x00007f9ae6739ac1 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f9ae673af39 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#3  0x00007f9ae66eaadb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f9ae6539de6 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#5  0x00007f9ae4d77485 in  () at /usr/lib64/libQt5Qml.so.5
#6  0x00007f9ae65439b7 in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007f9ae555e554 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f9ae7bdeccf in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f9ad7cd0700 (LWP 2891)):
#0  0x00007f9ae7bd43c6 in ppoll () at /lib64/libc.so.6
#1  0x00007f9ae6739ac1 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f9ae673af39 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#3  0x00007f9ae66eaadb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f9ae6539de6 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#5  0x00007f9ae4848545 in  () at /usr/lib64/libQt5DBus.so.5
#6  0x00007f9ae65439b7 in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007f9ae555e554 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f9ae7bdeccf in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f9adcffa700 (LWP 2886)):
#0  0x00007f9ae7bd42c9 in poll () at /lib64/libc.so.6
#1  0x00007f9ae80eecc7 in  () at /usr/lib64/libxcb.so.1
#2  0x00007f9ae80f08ea in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#3  0x00007f9add4f8519 in  () at /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007f9ae65439b7 in  () at /usr/lib64/libQt5Core.so.5
#5  0x00007f9ae555e554 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f9ae7bdeccf in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f9adf1d9d00 (LWP 2845)):
[KCrash Handler]
#6  0x00007f9ae7b1c08b in raise () at /lib64/libc.so.6
#7  0x00007f9ae7b054e9 in abort () at /lib64/libc.so.6
#8  0x00007f9ae7b053c1 in _nl_load_domain.cold.0 () at /lib64/libc.so.6
#9  0x00007f9ae7b146f2 in  () at /lib64/libc.so.6
#10 0x00007f9ae545343f in  () at /usr/lib64/libepoxy.so.0
#11 0x00007f9ae5428f8a in  () at /usr/lib64/libepoxy.so.0
#12 0x00007f9ae54d50ac in KWin::GLRenderTarget::~GLRenderTarget() () at /usr/lib64/libkwinglutils.so.11
#13 0x00007f9ae61cb4ad in  () at /usr/lib64/libkwin4_effect_builtins.so.1
#14 0x00007f9ae61cda37 in  () at /usr/lib64/libkwin4_effect_builtins.so.1
#15 0x00007f9ae61cdc19 in  () at /usr/lib64/libkwin4_effect_builtins.so.1
#16 0x00007f9ae776957a in KWin::EffectsHandlerImpl::unloadAllEffects() () at /usr/lib64/libkwin.so.5
#17 0x00007f9ae7769607 in KWin::EffectsHandlerImpl::~EffectsHandlerImpl() () at /usr/lib64/libkwin.so.5
#18 0x00007f9ad74ab008 in  () at /usr/lib64/qt5/plugins/org.kde.kwin.platforms/KWinX11Platform.so
#19 0x00007f9ad74ab0d9 in  () at /usr/lib64/qt5/plugins/org.kde.kwin.platforms/KWinX11Platform.so
#20 0x00007f9ae774aa8f in  () at /usr/lib64/libkwin.so.5
#21 0x00007f9ae774b01c in KWin::Compositor::suspend(KWin::Compositor::SuspendReason) () at /usr/lib64/libkwin.so.5
#22 0x00007f9ae6715902 in QObject::event(QEvent*) () at /usr/lib64/libQt5Core.so.5
#23 0x00007f9ae708c4a1 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#24 0x00007f9ae7093af0 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#25 0x00007f9ae66ebe09 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#26 0x00007f9ae66eedfb in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib64/libQt5Core.so.5
#27 0x00007f9ae673adab in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#28 0x00007f9add58bc6d in  () at /usr/lib64/libQt5XcbQpa.so.5
#29 0x00007f9ae66eaadb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#30 0x00007f9ae66f2c52 in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#31 0x00007f9ae828d47b in kdemain () at /usr/lib64/libkdeinit5_kwin_x11.so
#32 0x00007f9ae7b06feb in __libc_start_main () at /lib64/libc.so.6
#33 0x000055700fbdf08a in _start ()
[Inferior 1 (process 2845) detached]

Reported using DrKonqi