Bug 386183

Application: plasmashell (5.10.5)

Qt Version: 5.9.1
Frameworks Version: 5.38.0
Operating System: Linux 4.13.0-16-generic x86_64
Distribution: Ubuntu 17.10

-- Information about the crash:
I was just checking the program list and Plasma crashed and restarted by itself.
Distro is Kubuntu 17.10

-- 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 0x7f8d6806a900 (LWP 1137))]

Thread 9 (Thread 0x7f8c8c541700 (LWP 1291)):
#0  0x00007f8d616a38fa in __GI___poll (fds=0x7f8c840029e0, nfds=1, timeout=2893126) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f8d5c2d6169 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8d5c2d627c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8d61fe349b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f8d61f88e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8d61da83ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f8c8eb5a717 in KCupsConnection::run() () at /usr/lib/x86_64-linux-gnu/libkcupslib.so
#7  0x00007f8d61dad29d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f8d60f437fc in start_thread (arg=0x7f8c8c541700) at pthread_create.c:465
#9  0x00007f8d616afb0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f8c9fe27700 (LWP 1283)):
#0  0x00007f8d5c31b5d4 in g_mutex_unlock () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f8d5c2d5b69 in g_main_context_check () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8d5c2d6110 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8d5c2d627c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f8d61fe349b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8d61f88e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f8d61da83ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f8d65a9e846 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007f8d61dad29d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f8d60f437fc in start_thread (arg=0x7f8c9fe27700) at pthread_create.c:465
#10 0x00007f8d616afb0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f8cb293a700 (LWP 1282)):
#0  0x00007f8d60f4a072 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55fed9e81250) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f8d60f4a072 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55fed9e81200, cond=0x55fed9e81228) at pthread_cond_wait.c:502
#2  0x00007f8d60f4a072 in __pthread_cond_wait (cond=0x55fed9e81228, mutex=0x55fed9e81200) at pthread_cond_wait.c:655
#3  0x00007f8cb7505b8b in  () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#4  0x00007f8cb7505aa7 in  () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#5  0x00007f8d60f437fc in start_thread (arg=0x7f8cb293a700) at pthread_create.c:465
#6  0x00007f8d616afb0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f8cb313b700 (LWP 1281)):
#0  0x00007f8d60f4a072 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55fed9e9bca0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f8d60f4a072 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55fed9e9bc50, cond=0x55fed9e9bc78) at pthread_cond_wait.c:502
#2  0x00007f8d60f4a072 in __pthread_cond_wait (cond=0x55fed9e9bc78, mutex=0x55fed9e9bc50) at pthread_cond_wait.c:655
#3  0x00007f8cb7505b8b in  () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#4  0x00007f8cb7505aa7 in  () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#5  0x00007f8d60f437fc in start_thread (arg=0x7f8cb313b700) at pthread_create.c:465
#6  0x00007f8d616afb0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f8d41123700 (LWP 1279)):
#0  0x00007f8d60f4a072 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f8d67a41fb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f8d60f4a072 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f8d67a41f68, cond=0x7f8d67a41f90) at pthread_cond_wait.c:502
#2  0x00007f8d60f4a072 in __pthread_cond_wait (cond=0x7f8d67a41f90, mutex=0x7f8d67a41f68) at pthread_cond_wait.c:655
#3  0x00007f8d6774dbd4 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#4  0x00007f8d6774dc19 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#5  0x00007f8d60f437fc in start_thread (arg=0x7f8d41123700) at pthread_create.c:465
#6  0x00007f8d616afb0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f8d43390700 (LWP 1278)):
#0  0x00007f8d61fe349d in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007f8d61f88e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f8d61da83ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f8d64f08f45 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#4  0x00007f8d61dad29d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8d60f437fc in start_thread (arg=0x7f8d43390700) at pthread_create.c:465
#6  0x00007f8d616afb0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f8d4979e700 (LWP 1249)):
#0  0x00007f8d5c31b5d4 in g_mutex_unlock () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f8d5c2d615e in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8d5c2d627c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8d61fe349b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f8d61f88e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8d61da83ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f8d64f08f45 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f8d61dad29d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f8d60f437fc in start_thread (arg=0x7f8d4979e700) at pthread_create.c:465
#9  0x00007f8d616afb0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f8d4b1e3700 (LWP 1177)):
#0  0x00007f8d616a3901 in __GI___poll (fds=0x7f8d44002de0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f8d5c2d6169 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8d5c2d627c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8d61fe349b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f8d61f88e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8d61da83ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f8d6245fe45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f8d61dad29d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f8d60f437fc in start_thread (arg=0x7f8d4b1e3700) at pthread_create.c:465
#9  0x00007f8d616afb0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f8d6806a900 (LWP 1137)):
[KCrash Handler]
#6  0x00007f8d61fb9fd5 in QMetaObject::activate(QObject*, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f8d64cd1764 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f8d64f2d41a in QQmlDelegateModel::_q_itemsChanged(int, int, QVector<int> const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007f8d64f33d3c in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007f8d64f34135 in QQmlDelegateModel::qt_metacall(QMetaObject::Call, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#11 0x00007f8d61fb99a9 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f8d61f25ffc in QAbstractItemModel::dataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f8c9e9eab35 in  () at /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/private/kicker/libkickerplugin.so
#14 0x00007f8c9ea0a61f in  () at /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/private/kicker/libkickerplugin.so
#15 0x00007f8c9ea0cd33 in  () at /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/private/kicker/libkickerplugin.so
#16 0x00007f8d64e62388 in QQmlVMEMetaObject::metaCall(QObject*, QMetaObject::Call, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#17 0x00007f8d64e78a52 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#18 0x00007f8d64e76a46 in QQmlPropertyPrivate::write(QObject*, QQmlPropertyData const&, QVariant const&, QQmlContextData*, QFlags<QQmlPropertyData::WriteFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#19 0x00007f8d64e3fa71 in QV4::QObjectWrapper::setProperty(QV4::ExecutionEngine*, QObject*, QQmlPropertyData*, QV4::Value const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#20 0x00007f8d64e40796 in QV4::QObjectWrapper::setQmlProperty(QV4::ExecutionEngine*, QQmlContextData*, QObject*, QV4::String*, QV4::QObjectWrapper::RevisionMode, QV4::Value const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#21 0x00007f8d64e408a9 in QV4::QObjectWrapper::put(QV4::Managed*, QV4::String*, QV4::Value const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#22 0x00007f8d64e4f38c in QV4::Runtime::method_setProperty(QV4::ExecutionEngine*, QV4::Value const&, int, QV4::Value const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#23 0x00007f8ca800f8ab in  ()
#24 0x000055fedc3f5fe0 in  ()
#25 0x00007f8d41f915a0 in  ()
#26 0x00007f8d380c8b90 in  ()
#27 0x00007f8d380e5a00 in  ()
#28 0x0000000000000000 in  ()

Reported using DrKonqi