Application: kwin_x11 (5.14.0)

Qt Version: 5.11.1
Frameworks Version: 5.50.0
Operating System: Linux 4.15.0-34-generic x86_64
Distribution: KDE neon User Edition 5.14

-- Information about the crash:
- What I was doing when the application crashed:
Press ALT+F2 to get KRunner prompt
Enter 'konsole -e "hello world"'
Press Enter

The crash can be reproduced every time.

-- 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 0x7fa5e21ec840 (LWP 2825))]

Thread 5 (Thread 0x7fa5aac7f700 (LWP 2836)):
#0  0x00007fa5dab8d9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7fa5de12dfb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fa5dab8d9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7fa5de12df68, cond=0x7fa5de12df90) at pthread_cond_wait.c:502
#2  0x00007fa5dab8d9f3 in __pthread_cond_wait (cond=0x7fa5de12df90, mutex=0x7fa5de12df68) at pthread_cond_wait.c:655
#3  0x00007fa5dde38954 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#4  0x00007fa5dde38999 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#5  0x00007fa5dab876db in start_thread (arg=0x7fa5aac7f700) at pthread_create.c:463
#6  0x00007fa5e1b4f88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fa5b3786700 (LWP 2833)):
#0  0x00007fa5e1b42cf6 in __GI_ppoll (fds=0x7fa5ac000d28, nfds=1, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x00007fa5def227a1 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007fa5def23eae in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fa5deecadea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fa5decf5b8a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa5d96148b5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#6  0x00007fa5ded00aab in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa5dab876db in start_thread (arg=0x7fa5b3786700) at pthread_create.c:463
#8  0x00007fa5e1b4f88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fa5c2814700 (LWP 2830)):
#0  0x00007fa5e1b42cf6 in __GI_ppoll (fds=0x7fa5bc00e8f8, nfds=1, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x00007fa5def227a1 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007fa5def23eae in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fa5deecadea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fa5decf5b8a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa5d8506e45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#6  0x00007fa5ded00aab in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa5dab876db in start_thread (arg=0x7fa5c2814700) at pthread_create.c:463
#8  0x00007fa5e1b4f88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fa5c939c700 (LWP 2828)):
#0  0x00007fa5e1b42bf9 in __GI___poll (fds=0x7fa5c939bc68, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fa5e0a42747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fa5e0a4436a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fa5ca48f129 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fa5ded00aab in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa5dab876db in start_thread (arg=0x7fa5c939c700) at pthread_create.c:463
#6  0x00007fa5e1b4f88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fa5e21ec840 (LWP 2825)):
[KCrash Handler]
#6  0x00007fa5deedfa31 in QMetaObject::invokeMethod(QObject*, char const*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa5de6a62b7 in KWin::EffectWindow::addRepaintFull() () at /usr/lib/x86_64-linux-gnu/libkwineffects.so.11
#8  0x00007fa5de3de426 in  () at /usr/lib/x86_64-linux-gnu/libkwin4_effect_builtins.so.1
#9  0x00007fa5e16acf41 in KWin::EffectsHandlerImpl::postPaintScreen() () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#10 0x00007fa5e169f5ce in KWin::Scene::paintScreen(int*, QRegion const&, QRegion const&, QRegion*, QRegion*, QMatrix4x4 const&, QRect const&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#11 0x00007fa5b2334df1 in KWin::SceneOpenGL::paint(QRegion, QList<KWin::Toplevel*>) () at /usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kwin.scenes/KWinSceneOpenGL.so
#12 0x00007fa5e1691bf2 in KWin::Compositor::performCompositing() () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#13 0x00007fa5deefc5fb in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007fa5dfc59e8c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007fa5dfc6145f in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007fa5deeccab8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007fa5def25f0e in QTimerInfoList::activateTimers() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007fa5def24112 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007fa5ca51a16d in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#20 0x00007fa5deecadea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007fa5deed3fa0 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007fa5e1e27dab in kdemain () at /usr/lib/x86_64-linux-gnu/libkdeinit5_kwin_x11.so
#23 0x00007fa5e1a4fb97 in __libc_start_main (main=0x556784702720, argc=3, argv=0x7ffc28781078, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc28781068) at ../csu/libc-start.c:310
#24 0x000055678470275a in _start ()

Reported using DrKonqi