Application: plasmashell (5.14.4)

Qt Version: 5.12.0
Frameworks Version: 5.53.0
Operating System: Linux 4.19.9-arch1-1-ARCH x86_64
Distribution: "Arch Linux"

-- Information about the crash:
- What I was doing when the application crashed:
Fired up my box. Right after I logged in, but before I did anything else other than reflexively launching Firefox, I saw the sad face icon in the system tray and proceeded to report this crash.

-- Backtrace:
Application: Plazma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f58db4575c0 (LWP 8358))]

Thread 9 (Thread 0x7f58a4823700 (LWP 8896)):
#0  0x00007f58d8c05afc in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f58d9d3cadc in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007f58d9d3cbca in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007f58dbabd4cd in  () at /usr/lib/libQt5Quick.so.5
#4  0x00007f58dbabd73c in  () at /usr/lib/libQt5Quick.so.5
#5  0x00007f58d9d369cc in  () at /usr/lib/libQt5Core.so.5
#6  0x00007f58d8bffa9d in start_thread () at /usr/lib/libpthread.so.0
#7  0x00007f58d9a1bb23 in clone () at /usr/lib/libc.so.6

Thread 8 (Thread 0x7f58a7fff700 (LWP 8881)):
#0  0x00007f58d8c05afc in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f58d9d3cadc in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007f58d9d3cbca in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007f58dbabd4cd in  () at /usr/lib/libQt5Quick.so.5
#4  0x00007f58dbabd73c in  () at /usr/lib/libQt5Quick.so.5
#5  0x00007f58d9d369cc in  () at /usr/lib/libQt5Core.so.5
#6  0x00007f58d8bffa9d in start_thread () at /usr/lib/libpthread.so.0
#7  0x00007f58d9a1bb23 in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7f58aede7700 (LWP 8841)):
#0  0x00007f58d8c05afc in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f58d9d3cadc in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007f58d9d3cbca in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007f58dbabd4cd in  () at /usr/lib/libQt5Quick.so.5
#4  0x00007f58dbabd73c in  () at /usr/lib/libQt5Quick.so.5
#5  0x00007f58d9d369cc in  () at /usr/lib/libQt5Core.so.5
#6  0x00007f58d8bffa9d in start_thread () at /usr/lib/libpthread.so.0
#7  0x00007f58d9a1bb23 in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7f58bccdf700 (LWP 8742)):
#0  0x00007f58d9a10c21 in poll () at /usr/lib/libc.so.6
#1  0x00007f58d7c9cee0 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f58d7c9cfce in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f58d9f485c4 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f58d9ef158c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f58d9d355c9 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f58b5e6935a in KCupsConnection::run() () at /usr/lib/libkcupslib.so
#7  0x00007f58d9d369cc in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f58d8bffa9d in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f58d9a1bb23 in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7f58bd577700 (LWP 8630)):
#0  0x00007f58d7c4b414 in g_mutex_unlock () at /usr/lib/libglib-2.0.so.0
#1  0x00007f58d7c9c79d in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#2  0x00007f58d7c9ce06 in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007f58d7c9cfce in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007f58d9f485c4 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f58d9ef158c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f58d9d355c9 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007f58dba35e5b in  () at /usr/lib/libQt5Quick.so.5
#8  0x00007f58d9d369cc in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f58d8bffa9d in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f58d9a1bb23 in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7f58cb5ef700 (LWP 8566)):
#0  0x00007f58d9a10c21 in poll () at /usr/lib/libc.so.6
#1  0x00007f58d7c9cee0 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f58d7c9cfce in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f58d9f485c4 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f58d9ef158c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f58d9d355c9 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f58db76cb89 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007f58d9d369cc in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f58d8bffa9d in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f58d9a1bb23 in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7f58d0de7700 (LWP 8458)):
#0  0x00007f58d7c4b3a9 in g_mutex_lock () at /usr/lib/libglib-2.0.so.0
#1  0x00007f58d7c9cea6 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f58d7c9cfce in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f58d9f485c4 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f58d9ef158c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f58d9d355c9 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f58da7dcba6 in  () at /usr/lib/libQt5DBus.so.5
#7  0x00007f58d9d369cc in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f58d8bffa9d in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f58d9a1bb23 in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7f58d232f700 (LWP 8387)):
#0  0x00007f58d9a10c21 in poll () at /usr/lib/libc.so.6
#1  0x00007f58dbec4630 in  () at /usr/lib/libxcb.so.1
#2  0x00007f58dbec62db in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007f58d309b96b in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007f58d9d369cc in  () at /usr/lib/libQt5Core.so.5
#5  0x00007f58d8bffa9d in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f58d9a1bb23 in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7f58db4575c0 (LWP 8358)):
[KCrash Handler]
#6  0x000055abeaec02b0 in  ()
#7  0x00007f58dbbfc047 in QQuickItemViewTransitionableItem::startTransition(QQuickItemViewTransitioner*, int) () at /usr/lib/libQt5Quick.so.5
#8  0x00007f58d1503a7c in  () at /usr/lib/libQt5QuickTemplates2.so.5
#9  0x00007f58d1501eb2 in QQuickStackView::replace(QQmlV4Function*) () at /usr/lib/libQt5QuickTemplates2.so.5
#10 0x00007f58d1529e4d in  () at /usr/lib/libQt5QuickTemplates2.so.5
#11 0x00007f58d152a3a3 in QQuickStackView::qt_metacall(QMetaObject::Call, int, void**) () at /usr/lib/libQt5QuickTemplates2.so.5
#12 0x00007f58db6ba63f in QQmlVMEMetaObject::metaCall(QObject*, QMetaObject::Call, int, void**) () at /usr/lib/libQt5Qml.so.5
#13 0x00007f58db7131ae in  () at /usr/lib/libQt5Qml.so.5
#14 0x00007f58db61608f in QV4::QObjectMethod::callInternal(QV4::Value const*, QV4::Value const*, int) const () at /usr/lib/libQt5Qml.so.5
#15 0x00007f58db69cef5 in QV4::Runtime::method_callProperty(QV4::ExecutionEngine*, QV4::Value*, int, QV4::Value*, int) () at /usr/lib/libQt5Qml.so.5
#16 0x00007f58ac0404f1 in  ()
#17 0x0000000000000000 in  ()
[Inferior 1 (process 8358) detached]

Reported using DrKonqi