Application: plasmashell (5.8.4)

Qt Version: 5.7.1
Frameworks Version: 5.28.0
Operating System: Linux 4.8.0-1-amd64 x86_64
Distribution: Debian GNU/Linux unstable (sid)

-- Information about the crash:
After a video playback program, mpv was terminated due to lock-up, chromium froze. When I quit firefox, chromium unfroze but plasmashell terminated and restarted.

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 0x7f5dcb183e80 (LWP 4310))]

Thread 9 (Thread 0x7f5d22c15700 (LWP 4615)):
#0  0x00007f5dd83b156d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f5dd3d429f6 in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x7f5d14002e70, timeout=<optimized out>, context=0x7f5d14000990) at ././glib/gmain.c:4228
#2  0x00007f5dd3d429f6 in g_main_context_iterate (context=context@entry=0x7f5d14000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3924
#3  0x00007f5dd3d42b0c in g_main_context_iteration (context=0x7f5d14000990, may_block=1) at ././glib/gmain.c:3990
#4  0x00007f5dd8cc4f5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5dd8c6e8da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f5dd8a9c0f3 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f5dd8aa0da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f5dd7bb4464 in start_thread (arg=0x7f5d22c15700) at pthread_create.c:333
#9  0x00007f5dd83ba9df in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 8 (Thread 0x7f5d23416700 (LWP 4614)):
#0  0x00007f5dd83b156d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f5dd3d429f6 in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x7f5d1c0013c0, timeout=<optimized out>, context=0x7f5d1c000990) at ././glib/gmain.c:4228
#2  0x00007f5dd3d429f6 in g_main_context_iterate (context=context@entry=0x7f5d1c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3924
#3  0x00007f5dd3d42b0c in g_main_context_iteration (context=0x7f5d1c000990, may_block=1) at ././glib/gmain.c:3990
#4  0x00007f5dd8cc4f5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5dd8c6e8da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f5dd8a9c0f3 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f5d23866a35 in  () at /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/XmlListModel/libqmlxmllistmodelplugin.so
#8  0x00007f5dd8aa0da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f5dd7bb4464 in start_thread (arg=0x7f5d23416700) at pthread_create.c:333
#10 0x00007f5dd83ba9df in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 7 (Thread 0x7f5d2c301700 (LWP 4570)):
#0  0x00007f5dd7bba18f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f5db87ea2bb in  () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#2  0x00007f5db87ea117 in  () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#3  0x00007f5dd7bb4464 in start_thread (arg=0x7f5d2c301700) at pthread_create.c:333
#4  0x00007f5dd83ba9df in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 6 (Thread 0x7f5dba35d700 (LWP 4569)):
#0  0x00007f5dd7bba18f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f5ddd5212c4 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007f5ddd521309 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007f5dd7bb4464 in start_thread (arg=0x7f5dba35d700) at pthread_create.c:333
#4  0x00007f5dd83ba9df in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 5 (Thread 0x7f5dbbfff700 (LWP 4562)):
#0  0x00007f5dd3d88004 in g_mutex_unlock (mutex=0x7f5db0000990) at ././glib/gthread-posix.c:1348
#1  0x00007f5dd3d41ed0 in g_main_context_prepare (context=context@entry=0x7f5db0000990, priority=priority@entry=0x7f5dbbffeca0) at ././glib/gmain.c:3499
#2  0x00007f5dd3d4291b in g_main_context_iterate (context=context@entry=0x7f5db0000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3909
#3  0x00007f5dd3d42b0c in g_main_context_iteration (context=0x7f5db0000990, may_block=1) at ././glib/gmain.c:3990
#4  0x00007f5dd8cc4f5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5dd8c6e8da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f5dd8a9c0f3 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f5ddb32e6a5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f5dd8aa0da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f5dd7bb4464 in start_thread (arg=0x7f5dbbfff700) at pthread_create.c:333
#10 0x00007f5dd83ba9df in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 4 (Thread 0x7f5dc188a700 (LWP 4467)):
#0  0x00007f5dd83b156d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f5dd3d429f6 in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x7f5db4002e70, timeout=<optimized out>, context=0x7f5db4000990) at ././glib/gmain.c:4228
#2  0x00007f5dd3d429f6 in g_main_context_iterate (context=context@entry=0x7f5db4000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3924
#3  0x00007f5dd3d42b0c in g_main_context_iteration (context=0x7f5db4000990, may_block=1) at ././glib/gmain.c:3990
#4  0x00007f5dd8cc4f5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5dd8c6e8da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f5dd8a9c0f3 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f5ddb32e6a5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f5dd8aa0da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f5dd7bb4464 in start_thread (arg=0x7f5dc188a700) at pthread_create.c:333
#10 0x00007f5dd83ba9df in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 3 (Thread 0x7f5dc3fff700 (LWP 4433)):
#0  0x00007f5dd83b156d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f5dd3d429f6 in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x7f5dbc011bc0, timeout=<optimized out>, context=0x7f5dbc000990) at ././glib/gmain.c:4228
#2  0x00007f5dd3d429f6 in g_main_context_iterate (context=context@entry=0x7f5dbc000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3924
#3  0x00007f5dd3d42b0c in g_main_context_iteration (context=0x7f5dbc000990, may_block=1) at ././glib/gmain.c:3990
#4  0x00007f5dd8cc4f5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5dd8c6e8da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f5dd8a9c0f3 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f5dddbe46d5 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#8  0x00007f5dd8aa0da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f5dd7bb4464 in start_thread (arg=0x7f5dc3fff700) at pthread_create.c:333
#10 0x00007f5dd83ba9df in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 2 (Thread 0x7f5dc93d2700 (LWP 4432)):
#0  0x00007f5dd83b156d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f5ddc478150 in poll (__timeout=-1, __nfds=1, __fds=0x7f5dc93d1d00) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
#2  0x00007f5ddc478150 in _xcb_conn_wait (c=c@entry=0x5630602f9370, cond=cond@entry=0x5630602f93b0, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:479
#3  0x00007f5ddc479ee9 in xcb_wait_for_event (c=0x5630602f9370) at ../../src/xcb_in.c:693
#4  0x00007f5dcaef3b69 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#5  0x00007f5dd8aa0da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f5dd7bb4464 in start_thread (arg=0x7f5dc93d2700) at pthread_create.c:333
#7  0x00007f5dd83ba9df in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 1 (Thread 0x7f5dcb183e80 (LWP 4310)):
[KCrash Handler]
#6  0x00007f5dd8c36d10 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f5dd8c36ff9 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f5dd8c3efe9 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f5dd8c9c4e9 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f5dd8d13814 in QAbstractItemModel::rowsRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f5dd8c1806b in QAbstractItemModel::endRemoveRows() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f5d24c7a018 in  () at /usr/lib/x86_64-linux-gnu/libtaskmanager.so.6
#13 0x00007f5d24c7d0a9 in  () at /usr/lib/x86_64-linux-gnu/libtaskmanager.so.6
#14 0x00007f5dd8c9c4e9 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f5dd8d137a4 in QAbstractItemModel::rowsAboutToBeRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007f5dd8c17913 in QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f5dd8c3c735 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f5dd8c3c934 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f5dd8c3efc8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f5dd8c9c4e9 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007f5dd8d137a4 in QAbstractItemModel::rowsAboutToBeRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007f5dd8c17913 in QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007f5d2676a265 in  () at /usr/lib/x86_64-linux-gnu/libKF5ItemModels.so.5
#24 0x00007f5d2676b711 in  () at /usr/lib/x86_64-linux-gnu/libKF5ItemModels.so.5
#25 0x00007f5dd8c9c4e9 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007f5dd8d137a4 in QAbstractItemModel::rowsAboutToBeRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007f5dd8c17913 in QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007f5dd8c31f10 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007f5dd8c9c4e9 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007f5dd8d137a4 in QAbstractItemModel::rowsAboutToBeRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007f5dd8c17913 in QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007f5d24c93df3 in TaskManager::XWindowTasksModel::Private::removeWindow(unsigned long long) () at /usr/lib/x86_64-linux-gnu/libtaskmanager.so.6
#33 0x00007f5dd8c9c85e in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#34 0x00007f5ddae512e2 in KWindowSystem::windowRemoved(unsigned long long) () at /usr/lib/x86_64-linux-gnu/libKF5WindowSystem.so.5
#35 0x00007f5dc1ca9a66 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/kf5/org.kde.kwindowsystem.platforms/KF5WindowSystemX11Plugin.so
#36 0x00007f5ddae49632 in NETRootInfo::update(QFlags<NET::Property>, QFlags<NET::Property2>) () at /usr/lib/x86_64-linux-gnu/libKF5WindowSystem.so.5
#37 0x00007f5ddae4a65c in NETRootInfo::event(xcb_generic_event_t*, QFlags<NET::Property>*, QFlags<NET::Property2>*) () at /usr/lib/x86_64-linux-gnu/libKF5WindowSystem.so.5
#38 0x00007f5ddae4a982 in NETRootInfo::event(xcb_generic_event_t*, unsigned long*, int) () at /usr/lib/x86_64-linux-gnu/libKF5WindowSystem.so.5
#39 0x00007f5dc1ca9196 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/kf5/org.kde.kwindowsystem.platforms/KF5WindowSystemX11Plugin.so
#40 0x00007f5dd8c6da1f in QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#41 0x00007f5dcaef5334 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#42 0x00007f5dcaef6015 in QXcbConnection::processXcbEvents() () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#43 0x00007f5dd8c9d399 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#44 0x00007f5dd9553b2c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#45 0x00007f5dd955b2e1 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#46 0x00007f5dd8c708f0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#47 0x00007f5dd8c7307d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#48 0x00007f5dd8cc4b33 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#49 0x00007f5dd3d427f7 in g_main_dispatch (context=0x7f5dc40016f0) at ././glib/gmain.c:3203
#50 0x00007f5dd3d427f7 in g_main_context_dispatch (context=context@entry=0x7f5dc40016f0) at ././glib/gmain.c:3856
#51 0x00007f5dd3d42a60 in g_main_context_iterate (context=context@entry=0x7f5dc40016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3929
#52 0x00007f5dd3d42b0c in g_main_context_iteration (context=0x7f5dc40016f0, may_block=1) at ././glib/gmain.c:3990
#53 0x00007f5dd8cc4f3f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#54 0x00007f5dd8c6e8da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#55 0x00007f5dd8c7704c in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#56 0x000056305eac1d92 in  ()
#57 0x00007f5dd82f22b1 in __libc_start_main (main=0x56305eac1230, argc=2, argv=0x7ffec44d1f98, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffec44d1f88) at ../csu/libc-start.c:291
#58 0x000056305eac211a in _start ()

Reported using DrKonqi