Bug 404271

Application: kwin_x11 (5.14.5)

Qt Version: 5.12.1
Frameworks Version: 5.55.0
Operating System: Linux 4.20.0-pf4 x86_64
Distribution: "Arch Linux"

-- Information about the crash:
- What I was doing when the application crashed:
Watching a video on mpv on fullscreen and tab swtiched repeatedly when the system didn't respond.

- Unusual behavior I noticed:
The system didn't for sometime and then it did. At that point I noticed KWin had crashed.
- Custom settings of the application:
mpv has some KWin rules for windows borders but nothing more than that.

-- Backtrace:
Application: KWin (kwin_x11), signal: Aborted
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f077ed61840 (LWP 1182))]

Thread 6 (Thread 0x7f0762ffd700 (LWP 1351)):
#0  0x00007f0785531afc in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f078603528c in  () at /usr/lib/libQt5Script.so.5
#2  0x00007f07860352a9 in  () at /usr/lib/libQt5Script.so.5
#3  0x00007f078552ba9d in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f0787bbdb23 in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7f0763fff700 (LWP 1304)):
#0  0x00007f0785531afc in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f0774825c84 in  () at /usr/lib/dri/i965_dri.so
#2  0x00007f07748259a8 in  () at /usr/lib/dri/i965_dri.so
#3  0x00007f078552ba9d in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f0787bbdb23 in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7f07771c7700 (LWP 1300)):
#0  0x00007f0787bb2d16 in ppoll () at /usr/lib/libc.so.6
#1  0x00007f0786759bab in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/libQt5Core.so.5
#2  0x00007f078675b08b in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#3  0x00007f0786706b2c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f078654a569 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00007f0784ce9969 in  () at /usr/lib/libQt5Qml.so.5
#6  0x00007f078654b96c in  () at /usr/lib/libQt5Core.so.5
#7  0x00007f078552ba9d in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f0787bbdb23 in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7f077d59f700 (LWP 1192)):
#0  0x00007f0787bb2d16 in ppoll () at /usr/lib/libc.so.6
#1  0x00007f0786759bab in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/libQt5Core.so.5
#2  0x00007f078675b08b in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#3  0x00007f0786706b2c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f078654a569 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00007f078474eba6 in  () at /usr/lib/libQt5DBus.so.5
#6  0x00007f078654b96c in  () at /usr/lib/libQt5Core.so.5
#7  0x00007f078552ba9d in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f0787bbdb23 in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7f077e5ae700 (LWP 1187)):
#0  0x00007f0787bb2c21 in poll () at /usr/lib/libc.so.6
#1  0x00007f078646f630 in  () at /usr/lib/libxcb.so.1
#2  0x00007f07864712db in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007f077e8b4949 in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007f078654b96c in  () at /usr/lib/libQt5Core.so.5
#5  0x00007f078552ba9d in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f0787bbdb23 in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7f077ed61840 (LWP 1182)):
[KCrash Handler]
#16 0x00007f0787af9d7f in raise () at /usr/lib/libc.so.6
#17 0x00007f0787ae4672 in abort () at /usr/lib/libc.so.6
#18 0x00007f0787ae4548 in _nl_load_domain.cold.0 () at /usr/lib/libc.so.6
#19 0x00007f0787af2396 in  () at /usr/lib/libc.so.6
#20 0x00007f07853c5c30 in  () at /usr/lib/libepoxy.so.0
#21 0x00007f078541e5a0 in  () at /usr/lib/libepoxy.so.0
#22 0x00007f078540c4da in  () at /usr/lib/libepoxy.so.0
#23 0x00007f07854a1a1c in KWin::GLRenderTarget::~GLRenderTarget() () at /usr/lib/libkwinglutils.so.11
#24 0x00007f07861b270e in  () at /usr/lib/libkwin4_effect_builtins.so.1
#25 0x00007f07861b4d27 in  () at /usr/lib/libkwin4_effect_builtins.so.1
#26 0x00007f07861b4f09 in  () at /usr/lib/libkwin4_effect_builtins.so.1
#27 0x00007f0787943caa in KWin::EffectsHandlerImpl::unloadAllEffects() () at /usr/lib/libkwin.so.5
#28 0x00007f0787943d48 in KWin::EffectsHandlerImpl::~EffectsHandlerImpl() () at /usr/lib/libkwin.so.5
#29 0x00007f077ccea239 in  () at /usr/lib/qt/plugins/org.kde.kwin.platforms/KWinX11Platform.so
#30 0x00007f077ccea309 in  () at /usr/lib/qt/plugins/org.kde.kwin.platforms/KWinX11Platform.so
#31 0x00007f07879245af in  () at /usr/lib/libkwin.so.5
#32 0x00007f0787924b6d in KWin::Compositor::suspend(KWin::Compositor::SuspendReason) () at /usr/lib/libkwin.so.5
#33 0x00007f0786733152 in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#34 0x00007f07870d1e24 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#35 0x00007f07870d96e1 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#36 0x00007f0786707e99 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#37 0x00007f078670af38 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt5Core.so.5
#38 0x00007f078675aefd in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#39 0x00007f077e8b5cbf in  () at /usr/lib/libQt5XcbQpa.so.5
#40 0x00007f0786706b2c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#41 0x00007f078670ee36 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#42 0x00007f0787c8fb26 in kdemain () at /usr/lib/libkdeinit5_kwin_x11.so
#43 0x00007f0787ae6223 in __libc_start_main () at /usr/lib/libc.so.6
#44 0x000055aa30c8205e in _start ()
[Inferior 1 (process 1182) detached]

Reported using DrKonqi