Application: plasmashell (5.8.4)

Qt Version: 5.7.1
Frameworks Version: 5.28.0
Operating System: Linux 4.9.0-rc8+ x86_64
Distribution: Debian GNU/Linux unstable (sid)

-- Information about the crash:
I quit chromium which had several windows/tabs openeded and plasmashell crashed 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 0x7fa4310abc40 (LWP 16754))]

Thread 9 (Thread 0x7fa388935700 (LWP 17033)):
#0  0x00007fa43e9e5e67 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007fa439c69edd in g_main_context_prepare (context=context@entry=0x7fa37c000990, priority=priority@entry=0x7fa388934cc0) at ././glib/gmain.c:3501
#2  0x00007fa439c6a91b in g_main_context_iterate (context=context@entry=0x7fa37c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3909
#3  0x00007fa439c6ab0c in g_main_context_iteration (context=0x7fa37c000990, may_block=1) at ././glib/gmain.c:3990
#4  0x00007fa43e9e66fb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa43e99007a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa43e7b20d3 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa43e7b6d88 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa43d8cb464 in start_thread (arg=0x7fa388935700) at pthread_create.c:333
#9  0x00007fa43e0d19df in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 8 (Thread 0x7fa389136700 (LWP 17032)):
#0  0x00007fa43e7ae260 in QMutex::unlock() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007fa43e9e5e81 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007fa439c69edd in g_main_context_prepare (context=context@entry=0x7fa384000990, priority=priority@entry=0x7fa389135ca0) at ././glib/gmain.c:3501
#3  0x00007fa439c6a91b in g_main_context_iterate (context=context@entry=0x7fa384000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3909
#4  0x00007fa439c6ab0c in g_main_context_iteration (context=0x7fa384000990, may_block=1) at ././glib/gmain.c:3990
#5  0x00007fa43e9e66fb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa43e99007a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa43e7b20d3 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa389586a35 in  () at /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/XmlListModel/libqmlxmllistmodelplugin.so
#9  0x00007fa43e7b6d88 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fa43d8cb464 in start_thread (arg=0x7fa389136700) at pthread_create.c:333
#11 0x00007fa43e0d19df in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 7 (Thread 0x7fa418e55700 (LWP 16824)):
#0  0x00007fa43d8d118f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa41a7132ab in  () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#2  0x00007fa41a713107 in  () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#3  0x00007fa43d8cb464 in start_thread (arg=0x7fa418e55700) at pthread_create.c:333
#4  0x00007fa43e0d19df in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 6 (Thread 0x7fa41bfff700 (LWP 16816)):
#0  0x00007fa43d8d118f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa4432452c4 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007fa443245309 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007fa43d8cb464 in start_thread (arg=0x7fa41bfff700) at pthread_create.c:333
#4  0x00007fa43e0d19df in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 5 (Thread 0x7fa426163700 (LWP 16815)):
#0  0x00007fa43e0c45dd in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa439caec40 in g_wakeup_acknowledge (__nbytes=16, __buf=0x7fa426162bc0, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#2  0x00007fa439caec40 in g_wakeup_acknowledge (wakeup=0x7fa41c002390) at ././glib/gwakeup.c:210
#3  0x00007fa439c6a4be in g_main_context_check (context=context@entry=0x7fa414000990, max_priority=2147483647, fds=fds@entry=0x7fa414003070, n_fds=n_fds@entry=1) at ././glib/gmain.c:3707
#4  0x00007fa439c6a994 in g_main_context_iterate (context=context@entry=0x7fa414000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3926
#5  0x00007fa439c6ab0c in g_main_context_iteration (context=0x7fa414000990, may_block=1) at ././glib/gmain.c:3990
#6  0x00007fa43e9e66fb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa43e99007a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa43e7b20d3 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fa4410545d5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007fa43e7b6d88 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007fa43d8cb464 in start_thread (arg=0x7fa426163700) at pthread_create.c:333
#12 0x00007fa43e0d19df in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 4 (Thread 0x7fa4277cb700 (LWP 16800)):
#0  0x00007fa439caffe9 in g_mutex_lock (mutex=mutex@entry=0x7fa41c000990) at ././glib/gthread-posix.c:1336
#1  0x00007fa439c69ee9 in g_main_context_prepare (context=context@entry=0x7fa41c000990, priority=priority@entry=0x7fa4277caca0) at ././glib/gmain.c:3504
#2  0x00007fa439c6a91b in g_main_context_iterate (context=context@entry=0x7fa41c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3909
#3  0x00007fa439c6ab0c in g_main_context_iteration (context=0x7fa41c000990, may_block=1) at ././glib/gmain.c:3990
#4  0x00007fa43e9e66fb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa43e99007a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa43e7b20d3 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa4410545d5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fa43e7b6d88 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fa43d8cb464 in start_thread (arg=0x7fa4277cb700) at pthread_create.c:333
#10 0x00007fa43e0d19df in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 3 (Thread 0x7fa42df92700 (LWP 16767)):
#0  0x00007fa43e0c856d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa439c6a9f6 in g_main_context_iterate (priority=<optimized out>, n_fds=1, fds=0x7fa420011b30, timeout=<optimized out>, context=0x7fa420000990) at ././glib/gmain.c:4228
#2  0x00007fa439c6a9f6 in g_main_context_iterate (context=context@entry=0x7fa420000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3924
#3  0x00007fa439c6ab0c in g_main_context_iteration (context=0x7fa420000990, may_block=1) at ././glib/gmain.c:3990
#4  0x00007fa43e9e66fb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa43e99007a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa43e7b20d3 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa4439086d5 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#8  0x00007fa43e7b6d88 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fa43d8cb464 in start_thread (arg=0x7fa42df92700) at pthread_create.c:333
#10 0x00007fa43e0d19df in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 2 (Thread 0x7fa42f2fa700 (LWP 16764)):
#0  0x00007fa43e0c856d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa44219c150 in _xcb_conn_wait (__timeout=-1, __nfds=1, __fds=0x7fa42f2f9d00) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
#2  0x00007fa44219c150 in _xcb_conn_wait (c=c@entry=0x5567fabbd360, cond=cond@entry=0x5567fabbd3a0, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:479
#3  0x00007fa44219dee9 in xcb_wait_for_event (c=0x5567fabbd360) at ../../src/xcb_in.c:693
#4  0x00007fa430e1bb69 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#5  0x00007fa43e7b6d88 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa43d8cb464 in start_thread (arg=0x7fa42f2fa700) at pthread_create.c:333
#7  0x00007fa43e0d19df in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 1 (Thread 0x7fa4310abc40 (LWP 16754)):
[KCrash Handler]
#6  0x00007fa43e9584b0 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa43e958799 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa43e960789 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fa43e9bdc89 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fa43ea34fb4 in QAbstractItemModel::rowsRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007fa43e93980b in QAbstractItemModel::endRemoveRows() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fa38abb3018 in  () at /usr/lib/x86_64-linux-gnu/libtaskmanager.so.6
#13 0x00007fa38abb60a9 in  () at /usr/lib/x86_64-linux-gnu/libtaskmanager.so.6
#14 0x00007fa43e9bdc89 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007fa43ea34f44 in QAbstractItemModel::rowsAboutToBeRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007fa43e9390b3 in QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007fa43e95ded5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007fa43e95e0d4 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007fa43e960768 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007fa43e9bdc89 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007fa43ea34f44 in QAbstractItemModel::rowsAboutToBeRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007fa43e9390b3 in QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007fa38c6a3265 in  () at /usr/lib/x86_64-linux-gnu/libKF5ItemModels.so.5
#24 0x00007fa38c6a4711 in  () at /usr/lib/x86_64-linux-gnu/libKF5ItemModels.so.5
#25 0x00007fa43e9bdc89 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007fa43ea34f44 in QAbstractItemModel::rowsAboutToBeRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007fa43e9390b3 in QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007fa43e9536b0 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007fa43e9bdc89 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007fa43ea34f44 in QAbstractItemModel::rowsAboutToBeRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007fa43e9390b3 in QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007fa38abccdf3 in TaskManager::XWindowTasksModel::Private::removeWindow(unsigned long long) () at /usr/lib/x86_64-linux-gnu/libtaskmanager.so.6
#33 0x00007fa43e9bdffe in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#34 0x00007fa440b772e2 in KWindowSystem::windowRemoved(unsigned long long) () at /usr/lib/x86_64-linux-gnu/libKF5WindowSystem.so.5
#35 0x00007fa427beaa66 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/kf5/org.kde.kwindowsystem.platforms/KF5WindowSystemX11Plugin.so
#36 0x00007fa440b6f632 in NETRootInfo::update(QFlags<NET::Property>, QFlags<NET::Property2>) () at /usr/lib/x86_64-linux-gnu/libKF5WindowSystem.so.5
#37 0x00007fa440b7065c in NETRootInfo::event(xcb_generic_event_t*, QFlags<NET::Property>*, QFlags<NET::Property2>*) () at /usr/lib/x86_64-linux-gnu/libKF5WindowSystem.so.5
#38 0x00007fa440b70982 in NETRootInfo::event(xcb_generic_event_t*, unsigned long*, int) () at /usr/lib/x86_64-linux-gnu/libKF5WindowSystem.so.5
#39 0x00007fa427bea196 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/kf5/org.kde.kwindowsystem.platforms/KF5WindowSystemX11Plugin.so
#40 0x00007fa43e98f1bf in QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#41 0x00007fa430e1d334 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#42 0x00007fa430e1e015 in QXcbConnection::processXcbEvents() () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#43 0x00007fa43e9beb39 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#44 0x00007fa43f279b2c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#45 0x00007fa43f2812e1 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#46 0x00007fa43e992090 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#47 0x00007fa43e99481d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#48 0x00007fa43e9e62d3 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#49 0x00007fa439c6a7f7 in g_main_context_dispatch (context=0x7fa4280016f0) at ././glib/gmain.c:3203
#50 0x00007fa439c6a7f7 in g_main_context_dispatch (context=context@entry=0x7fa4280016f0) at ././glib/gmain.c:3856
#51 0x00007fa439c6aa60 in g_main_context_iterate (context=context@entry=0x7fa4280016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3929
#52 0x00007fa439c6ab0c in g_main_context_iteration (context=0x7fa4280016f0, may_block=1) at ././glib/gmain.c:3990
#53 0x00007fa43e9e66df in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#54 0x00007fa43e99007a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#55 0x00007fa43e9987ec in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#56 0x00005567f97d4d92 in  ()
#57 0x00007fa43e0092b1 in __libc_start_main (main=0x5567f97d4230, argc=2, argv=0x7ffe8cb69788, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe8cb69778) at ../csu/libc-start.c:291
#58 0x00005567f97d511a in _start ()

Reported using DrKonqi