Application: plasmashell (5.8.6)

Qt Version: 5.7.1
Frameworks Version: 5.28.0
Operating System: Linux 4.9.20 x86_64
Distribution: Debian GNU/Linux 9.0 (stretch)

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

Removed hdmi external monitor, was copying files as well. The crash happened after copying was done.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fdc92781940 (LWP 2555))]

Thread 7 (Thread 0x7fdbdfa2d700 (LWP 2745)):
#0  0x00007fdc8ce5955d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fdc8860db30 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fdc885c9042 in g_main_context_check () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fdc885c9514 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fdc885c968c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fdc8d77006b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fdc8d7199ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fdc8d5470f3 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fdc90762406 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007fdc8d54bda8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fdc8c660494 in start_thread (arg=0x7fdbdfa2d700) at pthread_create.c:333
#11 0x00007fdc8ce6693f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 6 (Thread 0x7fdc6e5a9700 (LWP 2743)):
#0  0x00007fdc8c66615f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fdc921da2c4 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007fdc921da309 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007fdc8c660494 in start_thread (arg=0x7fdc6e5a9700) at pthread_create.c:333
#4  0x00007fdc8ce6693f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 5 (Thread 0x7fdc6ffff700 (LWP 2732)):
#0  0x00007fdc8ce5d4ed in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fdc885c9576 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fdc885c968c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fdc8d77006b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fdc8d7199ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fdc8d5470f3 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fdc8fdd86a5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fdc8d54bda8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fdc8c660494 in start_thread (arg=0x7fdc6ffff700) at pthread_create.c:333
#9  0x00007fdc8ce6693f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 4 (Thread 0x7fdc76127700 (LWP 2636)):
#0  0x00007fdc8ce5955d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fdc8860db30 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fdc885c9042 in g_main_context_check () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fdc885c9514 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fdc885c968c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fdc8d77006b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fdc8d7199ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fdc8d5470f3 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fdc8fdd86a5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007fdc8d54bda8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fdc8c660494 in start_thread (arg=0x7fdc76127700) at pthread_create.c:333
#11 0x00007fdc8ce6693f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 3 (Thread 0x7fdc77b6c700 (LWP 2572)):
#0  0x00007fdc8ce5d4ed in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fdc885c9576 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fdc885c968c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fdc8d77006b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fdc8d7199ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fdc8d5470f3 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fdc928a16d5 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007fdc8d54bda8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fdc8c660494 in start_thread (arg=0x7fdc77b6c700) at pthread_create.c:333
#9  0x00007fdc8ce6693f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 2 (Thread 0x7fdc7d41c700 (LWP 2570)):
#0  0x00007fdc8ce5d4ed in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fdc91131150 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fdc91132ee9 in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fdc7ed2cb69 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fdc8d54bda8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fdc8c660494 in start_thread (arg=0x7fdc7d41c700) at pthread_create.c:333
#6  0x00007fdc8ce6693f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 1 (Thread 0x7fdc92781940 (LWP 2555)):
[KCrash Handler]
#6  0x00007fdc907f99e0 in QQuickWindow::maybeUpdate() () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007fdc907f0474 in QQuickItemPrivate::setEffectiveVisibleRecur(bool) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007fdc907f04f4 in QQuickItemPrivate::setEffectiveVisibleRecur(bool) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007fdc907f0664 in QQuickItem::setVisible(bool) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007fdc908a7750 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007fdc908a7dc0 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#12 0x00007fdc908a7f2b in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#13 0x00007fdc8fd55f52 in QQmlPropertyPrivate::write(QObject*, QQmlPropertyData const&, QVariant const&, QQmlContextData*, QFlags<QQmlPropertyPrivate::WriteFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#14 0x00007fdc8fd57693 in QQmlPropertyPrivate::writeValueProperty(QObject*, QQmlPropertyData const&, QVariant const&, QQmlContextData*, QFlags<QQmlPropertyPrivate::WriteFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#15 0x00007fdc8fdc3ef5 in QQmlBinding::write(QQmlPropertyData const&, QV4::Value const&, bool, QFlags<QQmlPropertyPrivate::WriteFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#16 0x00007fdc8fdc4f67 in QQmlBinding::update(QFlags<QQmlPropertyPrivate::WriteFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#17 0x00007fdc8fdc59ce in QQmlBinding::refresh() () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#18 0x00007fdc8fd9a934 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#19 0x00007fdc8fd4561c in QQmlData::signalEmitted(QAbstractDeclarativeData*, QObject*, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#20 0x00007fdc8d747d04 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007fdbdca36492 in  () at /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/private/taskmanager/libtaskmanagerplugin.so
#22 0x00007fdc8d74795e in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007fdbdca361b6 in  () at /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/private/taskmanager/libtaskmanagerplugin.so
#24 0x00007fdbdca319b3 in  () at /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/private/taskmanager/libtaskmanagerplugin.so
#25 0x00007fdbdca3342a in  () at /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/private/taskmanager/libtaskmanagerplugin.so
#26 0x00007fdc8d74795e in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007fdc90cae785 in Plasma::DataEngine::sourceRemoved(QString const&) () at /usr/lib/x86_64-linux-gnu/libKF5Plasma.so.5
#28 0x00007fdc8d74795e in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007fdc90cabc55 in Plasma::DataContainer::becameUnused(QString const&) () at /usr/lib/x86_64-linux-gnu/libKF5Plasma.so.5
#30 0x00007fdbd4f227ad in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/dataengine/plasma_engine_applicationjobs.so
#31 0x00007fdc8d748453 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007fdc8dffeb8c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#33 0x00007fdc8e006341 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#34 0x00007fdc8d71b9e0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#35 0x00007fdc8d76efee in QTimerInfoList::activateTimers() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#36 0x00007fdc8d76f549 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#37 0x00007fdc885c9377 in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#38 0x00007fdc885c95e0 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#39 0x00007fdc885c968c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#40 0x00007fdc8d77004f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#41 0x00007fdc8d7199ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#42 0x00007fdc8d72213c in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#43 0x0000558956875072 in  ()
#44 0x00007fdc8cd9e2b1 in __libc_start_main (main=0x558956874510, argc=2, argv=0x7ffd505af618, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd505af608) at ../csu/libc-start.c:291
#45 0x00005589568753fa in _start ()

Reported using DrKonqi