Application: plasmashell (5.9.5)

Qt Version: 5.8.0
Frameworks Version: 5.33.0
Operating System: Linux 4.9.27-1-MANJARO x86_64
Distribution: "Manjaro Linux"

-- Information about the crash:
- What I was doing when the application crashed:
Upon login if i delete default panel plasma shell crashed.
First i deleted all the default widgets i.e calendar, system tray, task manager, pager and application menu.
Then i deleted the panel which caused the crash.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f77e8bc5800 (LWP 817))]

Thread 7 (Thread 0x7f7733e9e700 (LWP 965)):
#0  0x00007f77dd08a1e4 in g_mutex_unlock () at /usr/lib/libglib-2.0.so.0
#1  0x00007f77dd043e80 in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#2  0x00007f77dd0448db in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007f77dd044acc in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007f77e2b9409b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f77e2b3d8ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f77e295fa73 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007f77e664bfd6 in  () at /usr/lib/libQt5Quick.so.5
#8  0x00007f77e29646d8 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f77e18192e7 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f77e227754f in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7f77b4f22700 (LWP 964)):
#0  0x00007f77e181f756 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f77e833f234 in  () at /usr/lib/libQt5Script.so.5
#2  0x00007f77e833f279 in  () at /usr/lib/libQt5Script.so.5
#3  0x00007f77e18192e7 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f77e227754f in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7f77bf2d6700 (LWP 927)):
#0  0x00007f77e2b939c2 in  () at /usr/lib/libQt5Core.so.5
#1  0x00007f77dd0443b9 in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#2  0x00007f77dd044954 in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007f77dd044acc in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007f77e2b9409b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f77e2b3d8ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f77e295fa73 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007f77e5a98025 in  () at /usr/lib/libQt5Qml.so.5
#8  0x00007f77e29646d8 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f77e18192e7 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f77e227754f in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7f77cb1e2700 (LWP 907)):
#0  0x00007fff7e9cfb02 in clock_gettime ()
#1  0x00007f77e2284826 in clock_gettime () at /usr/lib/libc.so.6
#2  0x00007f77e2b93231 in  () at /usr/lib/libQt5Core.so.5
#3  0x00007f77e2b919f9 in QTimerInfoList::updateCurrentTime() () at /usr/lib/libQt5Core.so.5
#4  0x00007f77e2b91fa5 in QTimerInfoList::timerWait(timespec&) () at /usr/lib/libQt5Core.so.5
#5  0x00007f77e2b9366e in  () at /usr/lib/libQt5Core.so.5
#6  0x00007f77dd043e8d in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#7  0x00007f77dd0448db in  () at /usr/lib/libglib-2.0.so.0
#8  0x00007f77dd044acc in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#9  0x00007f77e2b9409b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#10 0x00007f77e2b3d8ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#11 0x00007f77e295fa73 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#12 0x00007f77e5a98025 in  () at /usr/lib/libQt5Qml.so.5
#13 0x00007f77e29646d8 in  () at /usr/lib/libQt5Core.so.5
#14 0x00007f77e18192e7 in start_thread () at /usr/lib/libpthread.so.0
#15 0x00007f77e227754f in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7f77d0d57700 (LWP 855)):
#0  0x00007f77e2b91f20 in QTimerInfoList::repairTimersIfNeeded() () at /usr/lib/libQt5Core.so.5
#1  0x00007f77e2b91fb3 in QTimerInfoList::timerWait(timespec&) () at /usr/lib/libQt5Core.so.5
#2  0x00007f77e2b9366e in  () at /usr/lib/libQt5Core.so.5
#3  0x00007f77dd043e8d in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#4  0x00007f77dd0448db in  () at /usr/lib/libglib-2.0.so.0
#5  0x00007f77dd044acc in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#6  0x00007f77e2b9409b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#7  0x00007f77e2b3d8ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#8  0x00007f77e295fa73 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#9  0x00007f77e36e4125 in  () at /usr/lib/libQt5DBus.so.5
#10 0x00007f77e29646d8 in  () at /usr/lib/libQt5Core.so.5
#11 0x00007f77e18192e7 in start_thread () at /usr/lib/libpthread.so.0
#12 0x00007f77e227754f in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7f77d2dd3700 (LWP 825)):
#0  0x00007f77e226d67d in poll () at /usr/lib/libc.so.6
#1  0x00007f77e72658e0 in  () at /usr/lib/libxcb.so.1
#2  0x00007f77e7267679 in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007f77d5345239 in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007f77e29646d8 in  () at /usr/lib/libQt5Core.so.5
#5  0x00007f77e18192e7 in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f77e227754f in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7f77e8bc5800 (LWP 817)):
[KCrash Handler]
#6  0x00007f7723765504 in  () at /usr/lib/qt/plugins/plasma/applets/plasma_applet_notifications.so
#7  0x00007f77e2b6b0ee in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#8  0x00007f77e2b6b0ee in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#9  0x00007f77e2b6b73f in QObject::destroyed(QObject*) () at /usr/lib/libQt5Core.so.5
#10 0x00007f77e2b72845 in QObject::~QObject() () at /usr/lib/libQt5Core.so.5
#11 0x00007f77e6db7049 in Plasma::Containment::~Containment() () at /usr/lib/libKF5Plasma.so.5
#12 0x00007f77e2b6bc10 in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#13 0x00007f77e3aad34c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#14 0x00007f77e3ab4b61 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#15 0x00007f77e2b3f470 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#16 0x00007f77e2b41bfd in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt5Core.so.5
#17 0x00007f77e2b93c73 in  () at /usr/lib/libQt5Core.so.5
#18 0x00007f77dd0447b7 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#19 0x00007f77dd044a20 in  () at /usr/lib/libglib-2.0.so.0
#20 0x00007f77dd044acc in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#21 0x00007f77e2b9407f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#22 0x00007f77e2b3d8ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#23 0x00007f77e2b45e14 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#24 0x000000000041ca42 in  ()
#25 0x00007f77e21ab511 in __libc_start_main () at /usr/lib/libc.so.6
#26 0x000000000041cdca in _start ()

Reported using DrKonqi