Application: plasmashell (5.4.3)

Qt Version: 5.5.0
Operating System: Linux 4.2.5-201.fc22.x86_64 x86_64
Distribution (Platform): Fedora RPMs

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

==Environment and Sequence of Events that Caused the Crash==
- I have five activities setup in plasma desktop. For the sake of this report, I will label them a, b, c, d, and e.
- I had dolphin (file manager) running in activity a and kate (my default text file editor) running in activity d
- I opened a text file on dolphin, which automatically switched my activity from a to d.
- I took a quick glance at the opened file in kate on activity d and immediately switched back to activity a (using my previously configured mouse button shortcut for switching activites)
- Plasma crashed almost immediately after the switch back to activity a

-- Backtrace:
Application: Plasma (plasmashell), signal: Aborted
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f51785b4900 (LWP 2391))]

Thread 10 (Thread 0x7f51583ad700 (LWP 2404)):
#0  0x00007f516ff052fd in poll () from /lib64/libc.so.6
#1  0x00007f51763d8182 in _xcb_conn_wait () from /lib64/libxcb.so.1
#2  0x00007f51763d9c77 in xcb_wait_for_event () from /lib64/libxcb.so.1
#3  0x00007f515a35e999 in QXcbEventReader::run() () from /lib64/libQt5XcbQpa.so.5
#4  0x00007f5170b1854e in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#5  0x00007f516eb9d555 in start_thread () from /lib64/libpthread.so.0
#6  0x00007f516ff10b9d in clone () from /lib64/libc.so.6

Thread 9 (Thread 0x7f515594d700 (LWP 2689)):
#0  0x00007f516b084ee4 in g_mutex_unlock () from /lib64/libglib-2.0.so.0
#1  0x00007f516b03edce in g_main_context_acquire () from /lib64/libglib-2.0.so.0
#2  0x00007f516b03fc75 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#3  0x00007f516b03fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#4  0x00007f5170d4fdab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f5170cf6daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007f5170b135a4 in QThread::exec() () from /lib64/libQt5Core.so.5
#7  0x00007f5174e4f245 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#8  0x00007f5170b1854e in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#9  0x00007f516eb9d555 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f516ff10b9d in clone () from /lib64/libc.so.6

Thread 8 (Thread 0x7f5147fff700 (LWP 2690)):
#0  0x00007f516eba2540 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f514f3046da in radeon_drm_cs_emit_ioctl () from /usr/lib64/dri/radeonsi_dri.so
#2  0x00007f514f303e37 in impl_thrd_routine () from /usr/lib64/dri/radeonsi_dri.so
#3  0x00007f516eb9d555 in start_thread () from /lib64/libpthread.so.0
#4  0x00007f516ff10b9d in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7f5145d5d700 (LWP 2691)):
#0  0x00007f5170aee9e0 in g_main_context_iteration@plt () from /lib64/libQt5Core.so.5
#1  0x00007f5170d4fdab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#2  0x00007f5170cf6daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#3  0x00007f5170b135a4 in QThread::exec() () from /lib64/libQt5Core.so.5
#4  0x00007f5174e4f245 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#5  0x00007f5170b1854e in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#6  0x00007f516eb9d555 in start_thread () from /lib64/libpthread.so.0
#7  0x00007f516ff10b9d in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7f513ffff700 (LWP 2694)):
#0  0x00007fff345e8929 in ?? ()
#1  0x00007fff345e8c55 in clock_gettime ()
#2  0x00007f516ff1ed9d in clock_gettime () from /lib64/libc.so.6
#3  0x00007f5170bc8bc6 in qt_gettime() () from /lib64/libQt5Core.so.5
#4  0x00007f5170d4d839 in QTimerInfoList::updateCurrentTime() () from /lib64/libQt5Core.so.5
#5  0x00007f5170d4dda5 in QTimerInfoList::timerWait(timespec&) () from /lib64/libQt5Core.so.5
#6  0x00007f5170d4f18e in timerSourcePrepare(_GSource*, int*) () from /lib64/libQt5Core.so.5
#7  0x00007f516b03f35d in g_main_context_prepare () from /lib64/libglib-2.0.so.0
#8  0x00007f516b03fceb in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#9  0x00007f516b03fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#10 0x00007f5170d4fdab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#11 0x00007f5170cf6daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#12 0x00007f5170b135a4 in QThread::exec() () from /lib64/libQt5Core.so.5
#13 0x00007f5174e4f245 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#14 0x00007f5170b1854e in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#15 0x00007f516eb9d555 in start_thread () from /lib64/libpthread.so.0
#16 0x00007f516ff10b9d in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7f513e5a5700 (LWP 2695)):
#0  0x00007f516eba2540 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f5177ccb494 in QTWTF::TCMalloc_PageHeap::scavengerThread() () from /lib64/libQt5Script.so.5
#2  0x00007f5177ccb4d9 in QTWTF::TCMalloc_PageHeap::runScavengerThread(void*) () from /lib64/libQt5Script.so.5
#3  0x00007f516eb9d555 in start_thread () from /lib64/libpthread.so.0
#4  0x00007f516ff10b9d in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7f50b6925700 (LWP 2696)):
#0  0x00007f516b084ec9 in g_mutex_lock () from /lib64/libglib-2.0.so.0
#1  0x00007f516b03eea4 in g_main_context_release () from /lib64/libglib-2.0.so.0
#2  0x00007f516b03fd76 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#3  0x00007f516b03fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#4  0x00007f5170d4fdab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f5170cf6daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007f5170b135a4 in QThread::exec() () from /lib64/libQt5Core.so.5
#7  0x00007f5175a04616 in QQuickPixmapReader::run() () from /lib64/libQt5Quick.so.5
#8  0x00007f5170b1854e in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#9  0x00007f516eb9d555 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f516ff10b9d in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7f50a569d700 (LWP 2701)):
#0  0x00007f516ff052fd in poll () from /lib64/libc.so.6
#1  0x00007f516b03fdbc in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#2  0x00007f516b03fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007f5170d4fdab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007f5170cf6daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f5170b135a4 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f50a7310397 in KCupsConnection::run() () from /lib64/libkcupslib.so
#7  0x00007f5170b1854e in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#8  0x00007f516eb9d555 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f516ff10b9d in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f508abdd700 (LWP 20741)):
#0  0x00007f5170b114a2 in QMutex::lock() () from /lib64/libQt5Core.so.5
#1  0x00007f5170d4f32f in postEventSourcePrepare(_GSource*, int*) () from /lib64/libQt5Core.so.5
#2  0x00007f516b03f35d in g_main_context_prepare () from /lib64/libglib-2.0.so.0
#3  0x00007f516b03fceb in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#4  0x00007f516b03fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#5  0x00007f5170d4fdab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007f5170cf6daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#7  0x00007f5170b135a4 in QThread::exec() () from /lib64/libQt5Core.so.5
#8  0x00007f5170b1854e in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#9  0x00007f516eb9d555 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f516ff10b9d in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f51785b4900 (LWP 2391)):
[KCrash Handler]
#5  0x00007f516fe429c8 in raise () from /lib64/libc.so.6
#6  0x00007f516fe4465a in abort () from /lib64/libc.so.6
#7  0x00007f517077db4d in __gnu_cxx::__verbose_terminate_handler() () from /lib64/libstdc++.so.6
#8  0x00007f517077b996 in ?? () from /lib64/libstdc++.so.6
#9  0x00007f517077b9e1 in std::terminate() () from /lib64/libstdc++.so.6
#10 0x00007f517077bc49 in __cxa_rethrow () from /lib64/libstdc++.so.6
#11 0x00007f5170ca6a29 in QVector<QAbstractItemModelPrivate::Change>::reallocData(int, int, QFlags<QArrayData::AllocationOption>) () from /lib64/libQt5Core.so.5
#12 0x00007f5170ca18aa in QAbstractItemModel::endRemoveRows() () from /lib64/libQt5Core.so.5
#13 0x00007f50b4277104 in TaskManager::TasksModel::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () from /lib64/libtaskmanager.so.5
#14 0x00007f5170d2815a in QMetaObject::activate(QObject*, int, int, void**) () from /lib64/libQt5Core.so.5
#15 0x00007f50b425d902 in TaskManager::TaskGroup::itemRemoved(TaskManager::AbstractGroupableItem*) () from /lib64/libtaskmanager.so.5
#16 0x00007f50b425e8cb in TaskManager::TaskGroup::Private::signalRemovals() () from /lib64/libtaskmanager.so.5
#17 0x00007f5170d29021 in QObject::event(QEvent*) () from /lib64/libQt5Core.so.5
#18 0x00007f51722c24ac in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#19 0x00007f51722c7976 in QApplication::notify(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#20 0x00007f5170cf961b in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /lib64/libQt5Core.so.5
#21 0x00007f5170cfba16 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /lib64/libQt5Core.so.5
#22 0x00007f5170d4f983 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () from /lib64/libQt5Core.so.5
#23 0x00007f516b03fa8a in g_main_context_dispatch () from /lib64/libglib-2.0.so.0
#24 0x00007f516b03fe20 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#25 0x00007f516b03fecc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#26 0x00007f5170d4fd8f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#27 0x00007f5170cf6daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#28 0x00007f5170cfee6c in QCoreApplication::exec() () from /lib64/libQt5Core.so.5
#29 0x00000000004302c3 in main ()

Possible duplicates by query: bug 354168, bug 352237, bug 351772, bug 351301, bug 350116.

Reported using DrKonqi