Application: plasma-discover (5.13.5)

Qt Version: 5.11.1
Frameworks Version: 5.50.0
Operating System: Linux 4.18.0-10-generic x86_64
Distribution: Ubuntu 18.10

-- Information about the crash:
- Clicked on toolbar notification icon to open updater (Discover). Crashes almost immediately. Tried opening manually from menu. Same result.

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 0x7ff2271e8cc0 (LWP 15902))]

Thread 8 (Thread 0x7ff2097cb700 (LWP 15981)):
#0  0x00007ff22fa59219 in syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ff22fd72cf4 in QSemaphore::acquire(int) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007ff22ff4f978 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007ff22f2e508b in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#4  0x00007ff22f38c04d in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#5  0x00007ff22ff4f6db in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ff22f2dadbd in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#7  0x00007ff22f2db76d in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#8  0x00007ff22ff4f6db in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007ff22f385cff in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#10 0x00007ff22f380d39 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#11 0x00007ff22f3811cd in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#12 0x00007ff22f363511 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#13 0x00007ff22ff4f6db in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007ff22f324d03 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#15 0x00007ff22f324d90 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#16 0x00007ff22f337331 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#17 0x00007ff230d804a1 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007ff230d87ae0 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007ff22ff26499 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007ff22ff78d6a in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007ff22d4fcc3e in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007ff22d4fced8 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007ff22d4fcf6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007ff22ff78143 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007ff22ff2516b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007ff22fd740b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007ff22fd7dc87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007ff22eb07164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#29 0x00007ff22fa5fdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7ff20bfff700 (LWP 15967)):
#0  0x00007ff22fa59219 in syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ff22fd72cf4 in QSemaphore::acquire(int) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007ff22ff4f978 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007ff22f2e508b in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#4  0x00007ff22f38c04d in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#5  0x00007ff22ff4f6db in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ff22f2dadbd in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#7  0x00007ff22f2db76d in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#8  0x00007ff22ff4f6db in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007ff22f385cff in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#10 0x00007ff22f380d39 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#11 0x00007ff22f3811cd in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#12 0x00007ff22f363511 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#13 0x00007ff22ff4f6db in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007ff22f324d03 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#15 0x00007ff22f324d90 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#16 0x00007ff22f337331 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#17 0x00007ff230d804a1 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007ff230d87ae0 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007ff22ff26499 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007ff22ff78d6a in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007ff22d4fcc3e in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007ff22d4fced8 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007ff22d4fcf6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007ff22ff78143 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007ff22ff2516b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007ff22fd740b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007ff22fd7dc87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007ff22eb07164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#29 0x00007ff22fa5fdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7ff21532c700 (LWP 15941)):
#0  0x00007ff22d4fcf6f in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007ff22ff7815b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007ff22ff2516b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007ff22fd740b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ff22fd7dc87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ff22eb07164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#6  0x00007ff22fa5fdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7ff217fff700 (LWP 15932)):
#0  0x00007ff22d4fcd50 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007ff22d4fcf6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff22ff7815b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007ff22ff2516b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ff22fd740b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ff2317c1396 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007ff22fd7dc87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007ff22eb07164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#8  0x00007ff22fa5fdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7ff21e9ba700 (LWP 15914)):
#0  0x00007ff22fa536d9 in __GI___poll (fds=0x7ff2100025e0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ff22d4fce46 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff22d4fcf6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff22ff7815b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ff22ff2516b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ff22fd740b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ff2305661f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007ff22fd7dc87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007ff22eb07164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#9  0x00007ff22fa5fdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7ff21fbcb700 (LWP 15912)):
#0  0x00007ff22fa536d9 in __GI___poll (fds=0x7ff218018dc0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ff22d4fce46 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff22d4fcf6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff22ff7815b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ff22ff2516b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ff22fd740b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ff231291545 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007ff22fd7dc87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007ff22eb07164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#9  0x00007ff22fa5fdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7ff225953700 (LWP 15906)):
#0  0x00007ff22fa536d9 in __GI___poll (fds=0x7ff225952c78, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ff22d491917 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007ff22d49353a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007ff226b23159 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007ff22fd7dc87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ff22eb07164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#6  0x00007ff22fa5fdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7ff2271e8cc0 (LWP 15902)):
[KCrash Handler]
#6  0x00007ff22f986077 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#7  0x00007ff22f967535 in __GI_abort () at abort.c:79
#8  0x00007ff22fd3c8d7 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007ff231825eed in QSGRenderLoop::handleContextCreationFailure(QQuickWindow*, bool) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007ff231826f69 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007ff231827675 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#12 0x00007ff2307d2b05 in QWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#13 0x00007ff2318a187b in QQuickWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007ff230d804a1 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007ff230d87ae0 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007ff22ff26499 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007ff2307c77e3 in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#18 0x00007ff2307c84bd in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#19 0x00007ff2307a2b6b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#20 0x00007ff226bb4e5b in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#21 0x00007ff22ff2516b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007ff22ff2d2e2 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x0000558d96702ae3 in  ()
#24 0x00007ff22f96909b in __libc_start_main (main=0x558d96702510, argc=1, argv=0x7ffff7190b78, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffff7190b68) at ../csu/libc-start.c:308
#25 0x0000558d9670308a in _start ()
[Inferior 1 (process 15902) detached]

Reported using DrKonqi