Application: plasma-discover (5.13.5)

Qt Version: 5.11.1
Frameworks Version: 5.50.0
Operating System: Linux 4.18.0-15-generic x86_64
Distribution: Ubuntu 18.10

-- Information about the crash:
plasma-discover started crashing today. this is a two week old kubuntu 18.10 installation.

The crash can be reproduced every time.

-- Backtrace:
Application: Discover (plasma-discover), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fd237043c80 (LWP 30131))]

Thread 12 (Thread 0x7fd203133700 (LWP 30147)):
#0  0x00007fd23c6be6d9 in __GI___poll (fds=0x7fd1f400aa40, nfds=1, timeout=5611) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fd23a41fe46 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd23a41ff6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd23cbe315b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fd23cb9016b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fd23c9df0b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fd23c9e8c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fd23b772164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#8  0x00007fd23c6cadef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7fd203fff700 (LWP 30141)):
#0  0x00007fd23c6b9f64 in __GI___libc_read (fd=25, buf=0x7fd203ffecd0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:26
#1  0x00007fd23a465180 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd23a41f91f in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd23a41fdf0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fd23a4201d2 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fd2196e37b6 in  () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#6  0x00007fd23a448135 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007fd23b772164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#8  0x00007fd23c6cadef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7fd218cb5700 (LWP 30140)):
#0  0x00007fd23c6b9f64 in __GI___libc_read (fd=13, buf=0x7fd218cb4ce0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:26
#1  0x00007fd23a465180 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd23a41f91f in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd23a41fdf0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fd23a41ff6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fd23a41ffb1 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fd23a448135 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007fd23b772164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#8  0x00007fd23c6cadef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7fd21a312700 (LWP 30139)):
#0  0x00007fd23b778846 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7fd21a311c50, expected=0, futex_word=0x7fd20c007b24) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007fd23b778846 in __pthread_cond_wait_common (abstime=0x7fd21a311d10, mutex=0x7fd20c007ad0, cond=0x7fd20c007af8) at pthread_cond_wait.c:533
#2  0x00007fd23b778846 in __pthread_cond_timedwait (cond=0x7fd20c007af8, mutex=0x7fd20c007ad0, abstime=0x7fd21a311d10) at pthread_cond_wait.c:667
#3  0x00007fd23c9e931c in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fd23c9e1182 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fd23c9e8c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fd23b772164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#7  0x00007fd23c6cadef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7fd21ad32700 (LWP 30138)):
#0  0x00007fd23b778846 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7fd21ad31c50, expected=0, futex_word=0x7fd20c005ff0) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007fd23b778846 in __pthread_cond_wait_common (abstime=0x7fd21ad31d10, mutex=0x7fd20c005fa0, cond=0x7fd20c005fc8) at pthread_cond_wait.c:533
#2  0x00007fd23b778846 in __pthread_cond_timedwait (cond=0x7fd20c005fc8, mutex=0x7fd20c005fa0, abstime=0x7fd21ad31d10) at pthread_cond_wait.c:667
#3  0x00007fd23c9e931c in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fd23c9e1182 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fd23c9e8c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fd23b772164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#7  0x00007fd23c6cadef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7fd21b533700 (LWP 30137)):
#0  0x00007fd23c6c4219 in syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007fd23c9ddcf4 in QSemaphore::acquire(int) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007fd23cbba978 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fd23bff62a2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#4  0x00007fd23bff708c in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#5  0x00007fd23cbba6db in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fd23bff52f2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#7  0x00007fd23bf44f55 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#8  0x00007fd23bf466bc in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#9  0x00007fd23cbba6db in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fd23bfc5972 in QSslSocket::preSharedKeyAuthenticationRequired(QSslPreSharedKeyAuthenticator*) () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#11 0x00007fd23bfeb37a in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#12 0x00007fd22406f81e in  () at /usr/lib/x86_64-linux-gnu/libssl.so.1.1
#13 0x00007fd22406d829 in  () at /usr/lib/x86_64-linux-gnu/libssl.so.1.1
#14 0x00007fd224077904 in  () at /usr/lib/x86_64-linux-gnu/libssl.so.1.1
#15 0x00007fd22407680f in  () at /usr/lib/x86_64-linux-gnu/libssl.so.1.1
#16 0x00007fd224062854 in SSL_do_handshake () at /usr/lib/x86_64-linux-gnu/libssl.so.1.1
#17 0x00007fd23bfebaf5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#18 0x00007fd23bfebe95 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#19 0x00007fd23bfc65a8 in QSslSocket::startClientEncryption() () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#20 0x00007fd23bfc7280 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#21 0x00007fd23bfce489 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#22 0x00007fd23cbba6db in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007fd23bf903c3 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#24 0x00007fd23bf93230 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#25 0x00007fd23bfa237d in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#26 0x00007fd23d9eb4a1 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#27 0x00007fd23d9f2ae0 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#28 0x00007fd23cb91499 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007fd23cbe3d6a in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007fd23a41fc3e in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#31 0x00007fd23a41fed8 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007fd23a41ff6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007fd23cbe315b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#34 0x00007fd23cb9016b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#35 0x00007fd23c9df0b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#36 0x00007fd23c9e8c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#37 0x00007fd23b772164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#38 0x00007fd23c6cadef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7fd21bfff700 (LWP 30136)):
#0  0x00007ffe537fd9d9 in  ()
#1  0x00007ffe537fdbdc in clock_gettime ()
#2  0x00007fd23c6d99f6 in __GI___clock_gettime (clock_id=1, tp=0x7fd21bffeae0) at ../sysdeps/unix/clock_gettime.c:115
#3  0x00007fd23cbe2a81 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fd23cbe12b9 in QTimerInfoList::updateCurrentTime() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fd23cbe18b5 in QTimerInfoList::timerWait(timespec&) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fd23cbe2ede in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fd23a41f379 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007fd23a41fd7b in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007fd23a41ff6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007fd23cbe315b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007fd23cb9016b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fd23c9df0b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007fd23c9e8c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007fd23b772164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#15 0x00007fd23c6cadef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fd22c8ae700 (LWP 30135)):
#0  0x00007fd23c6be6d9 in __GI___poll (fds=0x7fd21c004db0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fd23a41fe46 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd23a41ff6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd23cbe315b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fd23cb9016b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fd23c9df0b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fd23e42c396 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007fd23c9e8c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fd23b772164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#9  0x00007fd23c6cadef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fd22e5aa700 (LWP 30134)):
#0  0x00007fd23c6be6d9 in __GI___poll (fds=0x7fd220004a00, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fd23a41fe46 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd23a41ff6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd23cbe315b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fd23cb9016b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fd23c9df0b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fd23d1d11f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fd23c9e8c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fd23b772164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#9  0x00007fd23c6cadef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fd22f7bb700 (LWP 30133)):
#0  0x00007fd23a466509 in g_mutex_lock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fd23a41f385 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd23a41fd7b in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd23a41ff6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fd23cbe315b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fd23cb9016b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fd23c9df0b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fd23defc545 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#8  0x00007fd23c9e8c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fd23b772164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007fd23c6cadef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fd2355b4700 (LWP 30132)):
#0  0x00007fd23c6be6d9 in __GI___poll (fds=0x7fd2355b3cb8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fd23a3b4917 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fd23a3b653a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fd236979159 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fd23c9e8c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fd23b772164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#6  0x00007fd23c6cadef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fd237043c80 (LWP 30131)):
[KCrash Handler]
#6  0x00007fd23c5f1077 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#7  0x00007fd23c5d2535 in __GI_abort () at abort.c:79
#8  0x00007fd23c9a78d7 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fd23e490eed in QSGRenderLoop::handleContextCreationFailure(QQuickWindow*, bool) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007fd23e491f69 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007fd23e492675 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#12 0x00007fd23d43db05 in QWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#13 0x00007fd23e50c87b in QQuickWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007fd23d9eb4a1 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007fd23d9f2ae0 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007fd23cb91499 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007fd23d4327e3 in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#18 0x00007fd23d4334bd in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#19 0x00007fd23d40db6b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#20 0x00007fd236a0ae5b in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#21 0x00007fd23cb9016b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007fd23cb982e2 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x0000564801b81ae3 in  ()
#24 0x00007fd23c5d409b in __libc_start_main (main=0x564801b81510, argc=1, argv=0x7ffe537eb038, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe537eb028) at ../csu/libc-start.c:308
#25 0x0000564801b8208a in _start ()
[Inferior 1 (process 30131) detached]

Reported using DrKonqi