Application: plasmashell (5.9.1)

Qt Version: 5.8.0
Frameworks Version: 5.30.0
Operating System: Linux 4.4.48-1-lts x86_64
Distribution (Platform): Archlinux Packages

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

Just clicked the button on the top left corner of the desktop after starting my computer and it crashed.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f337444f800 (LWP 616))]

Thread 12 (Thread 0x7f328b04a700 (LWP 745)):
#0  0x00007f336d0b010f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f336e1e058b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f3371f3c665 in  () at /usr/lib/libQt5Quick.so.5
#3  0x00007f3371f3cf72 in  () at /usr/lib/libQt5Quick.so.5
#4  0x00007f336e1df6d8 in  () at /usr/lib/libQt5Core.so.5
#5  0x00007f336d0aa454 in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f336daf47df in clone () at /usr/lib/libc.so.6

Thread 11 (Thread 0x7f328bc25700 (LWP 744)):
#0  0x00007f336d0b010f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f336e1e058b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f3371f3c665 in  () at /usr/lib/libQt5Quick.so.5
#3  0x00007f3371f3cf72 in  () at /usr/lib/libQt5Quick.so.5
#4  0x00007f336e1df6d8 in  () at /usr/lib/libQt5Core.so.5
#5  0x00007f336d0aa454 in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f336daf47df in clone () at /usr/lib/libc.so.6

Thread 10 (Thread 0x7f32a482c700 (LWP 722)):
#0  0x00007f336d0b010f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f336e1e058b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f3371f3c665 in  () at /usr/lib/libQt5Quick.so.5
#3  0x00007f3371f3cf72 in  () at /usr/lib/libQt5Quick.so.5
#4  0x00007f336e1df6d8 in  () at /usr/lib/libQt5Core.so.5
#5  0x00007f336d0aa454 in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f336daf47df in clone () at /usr/lib/libc.so.6

Thread 9 (Thread 0x7f32a542e700 (LWP 720)):
#0  0x00007f336d0b010f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f336e1e058b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f3371f3c665 in  () at /usr/lib/libQt5Quick.so.5
#3  0x00007f3371f3cf72 in  () at /usr/lib/libQt5Quick.so.5
#4  0x00007f336e1df6d8 in  () at /usr/lib/libQt5Core.so.5
#5  0x00007f336d0aa454 in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f336daf47df in clone () at /usr/lib/libc.so.6

Thread 8 (Thread 0x7f32a69af700 (LWP 716)):
#0  0x00007f336d0b010f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f336e1e058b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f3371f3c665 in  () at /usr/lib/libQt5Quick.so.5
#3  0x00007f3371f3cf72 in  () at /usr/lib/libQt5Quick.so.5
#4  0x00007f336e1df6d8 in  () at /usr/lib/libQt5Core.so.5
#5  0x00007f336d0aa454 in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f336daf47df in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7f32be960700 (LWP 711)):
#0  0x00007f336d0b010f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f336e1e058b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f3371f3c665 in  () at /usr/lib/libQt5Quick.so.5
#3  0x00007f3371f3cf72 in  () at /usr/lib/libQt5Quick.so.5
#4  0x00007f336e1df6d8 in  () at /usr/lib/libQt5Core.so.5
#5  0x00007f336d0aa454 in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f336daf47df in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7f32bf161700 (LWP 710)):
#0  0x00007f3368949db9 in g_mutex_lock () at /usr/lib/libglib-2.0.so.0
#1  0x00007f3368904184 in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#2  0x00007f3368904724 in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007f336890489c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007f336e40f06b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f336e3b889a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f336e1daa73 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007f3371ecafd6 in  () at /usr/lib/libQt5Quick.so.5
#8  0x00007f336e1df6d8 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f336d0aa454 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f336daf47df in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7f334698d700 (LWP 709)):
#0  0x00007f336d0b010f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f3373bc0234 in  () at /usr/lib/libQt5Script.so.5
#2  0x00007f3373bc0279 in  () at /usr/lib/libQt5Script.so.5
#3  0x00007f336d0aa454 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f336daf47df in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7f3354955700 (LWP 708)):
#0  0x00007f3368904897 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#1  0x00007f336e40f06b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#2  0x00007f336e3b889a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#3  0x00007f336e1daa73 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#4  0x00007f3371316025 in  () at /usr/lib/libQt5Qml.so.5
#5  0x00007f336e1df6d8 in  () at /usr/lib/libQt5Core.so.5
#6  0x00007f336d0aa454 in start_thread () at /usr/lib/libpthread.so.0
#7  0x00007f336daf47df in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7f33569e1700 (LWP 707)):
#0  0x00007f336daeb48d in poll () at /usr/lib/libc.so.6
#1  0x00007f3368904786 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f336890489c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f336e40f06b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f336e3b889a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f336e1daa73 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f3371316025 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007f336e1df6d8 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f336d0aa454 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f336daf47df in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7f3357fff700 (LWP 646)):
#0  0x00007f336daeb48d in poll () at /usr/lib/libc.so.6
#1  0x00007f3368904786 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f336890489c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f336e40f06b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f336e3b889a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f336e1daa73 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f336ef5f125 in  () at /usr/lib/libQt5DBus.so.5
#7  0x00007f336e1df6d8 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f336d0aa454 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f336daf47df in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7f337444f800 (LWP 616)):
[KCrash Handler]
#6  0x00007f3371f75de1 in QQuickItemPrivate::setEffectiveVisibleRecur(bool) () at /usr/lib/libQt5Quick.so.5
#7  0x00007f3371f75dea in QQuickItemPrivate::setEffectiveVisibleRecur(bool) () at /usr/lib/libQt5Quick.so.5
#8  0x00007f3371f75f44 in QQuickItem::setVisible(bool) () at /usr/lib/libQt5Quick.so.5
#9  0x00007f3373ef34bc in  () at /usr/lib/libKF5PlasmaQuick.so.5
#10 0x00007f3373ef4bee in PlasmaQuick::Dialog::event(QEvent*) () at /usr/lib/libKF5PlasmaQuick.so.5
#11 0x00007f336f32834c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#12 0x00007f336f32fb61 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#13 0x00007f336e3ba440 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#14 0x00007f336e91178e in QWindow::setVisible(bool) () at /usr/lib/libQt5Gui.so.5
#15 0x00007f3373ef0dd4 in PlasmaQuick::Dialog::setVisible(bool) () at /usr/lib/libKF5PlasmaQuick.so.5
#16 0x00007f3373ef3c48 in  () at /usr/lib/libKF5PlasmaQuick.so.5
#17 0x00007f3373ef538b in PlasmaQuick::Dialog::qt_metacall(QMetaObject::Call, int, void**) () at /usr/lib/libKF5PlasmaQuick.so.5
#18 0x00007f3371289ac9 in  () at /usr/lib/libQt5Qml.so.5
#19 0x00007f3371288498 in QQmlPropertyPrivate::write(QObject*, QQmlPropertyData const&, QVariant const&, QQmlContextData*, QFlags<QQmlPropertyData::WriteFlag>) () at /usr/lib/libQt5Qml.so.5
#20 0x00007f3371252b7b in QV4::QObjectWrapper::setProperty(QV4::ExecutionEngine*, QObject*, QQmlPropertyData*, QV4::Value const&) () at /usr/lib/libQt5Qml.so.5
#21 0x00007f3371253390 in QV4::QObjectWrapper::setQmlProperty(QV4::ExecutionEngine*, QQmlContextData*, QObject*, QV4::String*, QV4::QObjectWrapper::RevisionMode, QV4::Value const&) () at /usr/lib/libQt5Qml.so.5
#22 0x00007f33712534a6 in QV4::QObjectWrapper::put(QV4::Managed*, QV4::String*, QV4::Value const&) () at /usr/lib/libQt5Qml.so.5
#23 0x00007f3371263f56 in QV4::Runtime::method_setProperty(QV4::ExecutionEngine*, QV4::Value const&, int, QV4::Value const&) () at /usr/lib/libQt5Qml.so.5
#24 0x00007f32bfcb8f42 in  ()
#25 0x0000000001fec980 in  ()
#26 0x00007f32bfcb9504 in  ()
#27 0x0000000000000000 in  ()

Reported using DrKonqi