Application: kwin_x11 (5.12.5)

Qt Version: 5.9.5
Frameworks Version: 5.44.0
Operating System: Linux 4.15.0-34-generic x86_64
Distribution: Ubuntu 18.04.1 LTS

-- Information about the crash:
- What I was doing when the application crashed:
I closed the vlc program, also happens with other programs like blender
- Custom settings of the application:
Window decoration: Ten-Blue
Activated Virtual Desktops, 4 desks, 1 row

The crash can be reproduced sometimes.

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f51e5483cc0 (LWP 2284))]

Thread 6 (Thread 0x7f519aab8700 (LWP 2297)):
#0  0x00007f51dde489f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f51e13dffb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f51dde489f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f51e13dff68, cond=0x7f51e13dff90) at pthread_cond_wait.c:502
#2  0x00007f51dde489f3 in __pthread_cond_wait (cond=0x7f51e13dff90, mutex=0x7f51e13dff68) at pthread_cond_wait.c:655
#3  0x00007f51e10e95f4 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#4  0x00007f51e10e9639 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#5  0x00007f51dde426db in start_thread (arg=0x7f519aab8700) at pthread_create.c:463
#6  0x00007f51e4ded88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f51b4980700 (LWP 2293)):
#0  0x00007f51e21e3bbd in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007f51e218b9ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f51e1faa22a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f51dc92e6f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#4  0x00007f51e1faf16d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f51dde426db in start_thread (arg=0x7f51b4980700) at pthread_create.c:463
#6  0x00007f51e4ded88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f51c263e700 (LWP 2292)):
#0  0x00007f51e4de0cf6 in __GI_ppoll (fds=0x7f51b0000d28, nfds=1, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x00007f51e21e25c1 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f51e21e3cde in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f51e218b9ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f51e1faa22a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f51dc92e6f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#6  0x00007f51e1faf16d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f51dde426db in start_thread (arg=0x7f51c263e700) at pthread_create.c:463
#8  0x00007f51e4ded88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f51c922b700 (LWP 2290)):
#0  0x00007f51e4de0cf6 in __GI_ppoll (fds=0x7f51bc00ec48, nfds=1, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x00007f51e21e25c1 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f51e21e3cde in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f51e218b9ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f51e1faa22a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f51db807d45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#6  0x00007f51e1faf16d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f51dde426db in start_thread (arg=0x7f51c922b700) at pthread_create.c:463
#8  0x00007f51e4ded88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f51cb886700 (LWP 2289)):
#0  0x00007f51e4de0bf9 in __GI___poll (fds=0x7f51cb885c68, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f51e3cea747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f51e3cec36a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f51cc7652a9 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f51e1faf16d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f51dde426db in start_thread (arg=0x7f51cb886700) at pthread_create.c:463
#6  0x00007f51e4ded88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f51e5483cc0 (LWP 2284)):
[KCrash Handler]
#6  0x00000000408bc63b in  ()
#7  0x00007f51b63df5c4 in  () at /usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.390.48
#8  0x00007f51b63e4a08 in  () at /usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.390.48
#9  0x00007f51b5fa7d68 in  () at /usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.390.48
#10 0x00007f51e2a9a0b5 in QOpenGLTextureGlyphCache::resizeTextureData(int, int) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#11 0x00007f51e2a1e9da in QTextureGlyphCache::fillInPendingGlyphs() () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#12 0x00007f51dd005af6 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#13 0x00007f51dd0027e9 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007f51dd0b0ff8 in QQuickTextNode::addGlyphs(QPointF const&, QGlyphRun const&, QColor const&, QQuickText::TextStyle, QColor const&, QSGNode*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#15 0x00007f51dd0b6104 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#16 0x00007f51dd0b1f5a in QQuickTextNode::addTextLayout(QPointF const&, QTextLayout*, QColor const&, QQuickText::TextStyle, QColor const&, QColor const&, QColor const&, QColor const&, int, int, int, int) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#17 0x00007f51dd0b0bc1 in QQuickText::updatePaintNode(QSGNode*, QQuickItem::UpdatePaintNodeData*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#18 0x00007f51dd06b8b8 in QQuickWindowPrivate::updateDirtyNode(QQuickItem*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#19 0x00007f51dd06c133 in QQuickWindowPrivate::updateDirtyNodes() () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#20 0x00007f51dd06d3b2 in QQuickWindowPrivate::syncSceneGraph() () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#21 0x00007f51dd126348 in QQuickRenderControl::grab() () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#22 0x00007f51c3364292 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kdecoration2/kwin5_aurorae.so
#23 0x00007f51e21bc6cf in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007f51e21c9027 in QTimer::timeout(QTimer::QPrivateSignal) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f51e21c9388 in QTimer::timerEvent(QTimerEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007f51e21bd0db in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007f51e2f0b82c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#28 0x00007f51e2f130f4 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#29 0x00007f51e218d9a8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007f51e21e5d8e in QTimerInfoList::activateTimers() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007f51e21e3f42 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007f51cc7c85cd in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#33 0x00007f51e218b9ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#34 0x00007f51e2194a84 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#35 0x00007f51e50c5dbb in kdemain () at /usr/lib/x86_64-linux-gnu/libkdeinit5_kwin_x11.so
#36 0x00007f51e4cedb97 in __libc_start_main (main=0x561bb4e56730, argc=3, argv=0x7ffefe66a498, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffefe66a488) at ../csu/libc-start.c:310
#37 0x0000561bb4e5676a in _start ()

Reported using DrKonqi