Application: kwin_x11 (5.10.4)

Qt Version: 5.9.1
Frameworks Version: 5.37.0
Operating System: Linux 4.12.8-2-ARCH x86_64
Distribution (Platform): Archlinux Packages

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

I was editing a screenshot using KolourPaint, closed that, then wanted to close Spectacle and as soon as I clicked on close it crashed. I remember that I accidentally clicked on Pronterface before clicking on KolourPaint so maybe it is due to the application being starting. Wasn't able to reproduce.

The crash does not seem to be reproducible.

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fc392803840 (LWP 624))]

Thread 5 (Thread 0x7fc36ffff700 (LWP 1085)):
#0  0x00007fc39219af76 in ppoll () at /usr/lib/libc.so.6
#1  0x00007fc38f7abba3 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/libQt5Core.so.5
#2  0x00007fc38f7ad33f in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#3  0x00007fc38f753ffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fc38f56d40e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00007fc389e313d9 in  () at /usr/lib/libQt5Qml.so.5
#6  0x00007fc38f57215b in  () at /usr/lib/libQt5Core.so.5
#7  0x00007fc38b335049 in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007fc3921a4f0f in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7fc35a160700 (LWP 724)):
#0  0x00007fc38b33b1ad in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fc38e6cab04 in  () at /usr/lib/libQt5Script.so.5
#2  0x00007fc38e6cab49 in  () at /usr/lib/libQt5Script.so.5
#3  0x00007fc38b335049 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fc3921a4f0f in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7fc36f7fe700 (LWP 708)):
#0  0x00007fc39219af76 in ppoll () at /usr/lib/libc.so.6
#1  0x00007fc38f7abba3 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/libQt5Core.so.5
#2  0x00007fc38f7ad33f in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#3  0x00007fc38f753ffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fc38f56d40e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00007fc389e313d9 in  () at /usr/lib/libQt5Qml.so.5
#6  0x00007fc38f57215b in  () at /usr/lib/libQt5Core.so.5
#7  0x00007fc38b335049 in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007fc3921a4f0f in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7fc376636700 (LWP 697)):
#0  0x00007fc39219af76 in ppoll () at /usr/lib/libc.so.6
#1  0x00007fc38f7abba3 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/libQt5Core.so.5
#2  0x00007fc38f7ad33f in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#3  0x00007fc38f753ffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fc38f56d40e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00007fc388fd1396 in  () at /usr/lib/libQt5DBus.so.5
#6  0x00007fc38f57215b in  () at /usr/lib/libQt5Core.so.5
#7  0x00007fc38b335049 in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007fc3921a4f0f in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7fc392803840 (LWP 624)):
[KCrash Handler]
#5  0x00000000405c8799 in  ()
#6  0x00007fc35b3d2a59 in  () at /usr/lib/libnvidia-glcore.so.384.59
#7  0x00007fc35b3d95c4 in  () at /usr/lib/libnvidia-glcore.so.384.59
#8  0x00007fc35b3e22c4 in  () at /usr/lib/libnvidia-glcore.so.384.59
#9  0x00007fc35afa577e in  () at /usr/lib/libnvidia-glcore.so.384.59
#10 0x00007fc38a4e0437 in QSGBatchRenderer::Renderer::renderMergedBatch(QSGBatchRenderer::Batch const*) () at /usr/lib/libQt5Quick.so.5
#11 0x00007fc38a4e16d6 in QSGBatchRenderer::Renderer::renderBatches() () at /usr/lib/libQt5Quick.so.5
#12 0x00007fc38a4e6f66 in QSGBatchRenderer::Renderer::render() () at /usr/lib/libQt5Quick.so.5
#13 0x00007fc38a4d759f in QSGRenderer::renderScene(QSGBindable const&) () at /usr/lib/libQt5Quick.so.5
#14 0x00007fc38a4d7aa0 in QSGRenderer::renderScene(unsigned int) () at /usr/lib/libQt5Quick.so.5
#15 0x00007fc38a512cd0 in QSGDefaultRenderContext::renderNextFrame(QSGRenderer*, unsigned int) () at /usr/lib/libQt5Quick.so.5
#16 0x00007fc38a571380 in QQuickWindowPrivate::renderSceneGraph(QSize const&) () at /usr/lib/libQt5Quick.so.5
#17 0x00007fc38a62e0ba in QQuickRenderControl::render() () at /usr/lib/libQt5Quick.so.5
#18 0x00007fc3744fc90d in  () at /usr/lib/qt/plugins/org.kde.kdecoration2/kwin5_aurorae.so
#19 0x00007fc38f7858af in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#20 0x00007fc38f7926b8 in QTimer::timeout(QTimer::QPrivateSignal) () at /usr/lib/libQt5Core.so.5
#21 0x00007fc38f792a29 in QTimer::timerEvent(QTimerEvent*) () at /usr/lib/libQt5Core.so.5
#22 0x00007fc38f78618b in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#23 0x00007fc39047ce4c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#24 0x00007fc390484926 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#25 0x00007fc38f755bd0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#26 0x00007fc38f7af4a8 in QTimerInfoList::activateTimers() () at /usr/lib/libQt5Core.so.5
#27 0x00007fc38f7ad5a4 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#28 0x00007fc3798f10de in  () at /usr/lib/libQt5XcbQpa.so.5
#29 0x00007fc38f753ffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#30 0x00007fc38f75d048 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#31 0x00007fc3924656d3 in kdemain () at /usr/lib/libkdeinit5_kwin_x11.so
#32 0x00007fc3920d74ca in __libc_start_main () at /usr/lib/libc.so.6
#33 0x000055cc836f97ca in _start ()

Reported using DrKonqi