Application: plasma-discover (5.10.5)

Qt Version: 5.7.1
Frameworks Version: 5.38.0
Operating System: Linux 4.10.0-37-generic x86_64
Distribution: Ubuntu 17.04

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

Clicked on the Updates are available button, got a pop-up dialog saying that 3 updates were available. Clicked on Update. Discover started (window outline visible, but doesn't seem to have painted any contents), then crashed.

Using the Ubuntu Backports Landing PPA.

Happened a second time when I did the same set of operations.

-- 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 0x7f9269240440 (LWP 15776))]

Thread 10 (Thread 0x7f92212d4700 (LWP 15789)):
#0  0x00007f925f45f5a1 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f925f461a0b in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f925f46249b in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f925f46268c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f926540e0bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f92653b7bea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f92651e5f83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f92651eac38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f92615c56da in start_thread (arg=0x7f92212d4700) at pthread_create.c:456
#9  0x00007f92647eed7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 9 (Thread 0x7f9221eea700 (LWP 15787)):
#0  0x00007f92647e2d8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f925f462576 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f925f462902 in g_main_loop_run () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f9223ae2476 in  () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f925f489f65 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f92615c56da in start_thread (arg=0x7f9221eea700) at pthread_create.c:456
#6  0x00007f92647eed7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 8 (Thread 0x7f92226eb700 (LWP 15786)):
#0  0x00007f92647e2d8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f925f462576 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f925f46268c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f925f4626d1 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f925f489f65 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f92615c56da in start_thread (arg=0x7f92226eb700) at pthread_create.c:456
#6  0x00007f92647eed7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 7 (Thread 0x7f9234653700 (LWP 15783)):
#0  0x00007f92615cb510 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f92651ebaeb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f92651e49c3 in QSemaphore::acquire(int) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f92653e59fe in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f92636e2858 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#5  0x00007f92637742dd in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#6  0x00007f92653e5789 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f92636a5176 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#8  0x00007f92636a562d in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#9  0x00007f92653e5789 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f9263760e06 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#11 0x00007f92637647d3 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#12 0x00007f92637651de in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#13 0x00007f9263750a31 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#14 0x00007f92653e5789 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f92637242f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#16 0x00007f92637243ac in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#17 0x00007f926372f1e1 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#18 0x00007f926692035c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007f9266927b21 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#20 0x00007f92653b9c00 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007f926540e54d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007f925f462377 in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f925f4625e0 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f925f46268c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007f926540e09f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007f92653b7bea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007f92651e5f83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007f92651eac38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007f92615c56da in start_thread (arg=0x7f9234653700) at pthread_create.c:456
#30 0x00007f92647eed7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 6 (Thread 0x7f9232346700 (LWP 15782)):
#0  0x00007f925f461a6d in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f925f46249b in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f925f46268c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f926540e0bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f92653b7bea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f92651e5f83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f92651eac38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f92615c56da in start_thread (arg=0x7f9232346700) at pthread_create.c:456
#8  0x00007f92647eed7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 5 (Thread 0x7f924168a700 (LWP 15781)):
#0  0x00007f92647e2d8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f925f462576 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f925f46268c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f926540e0bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f92653b7bea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f92651e5f83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f92685cc4c6 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f92651eac38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f92615c56da in start_thread (arg=0x7f924168a700) at pthread_create.c:456
#9  0x00007f92647eed7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 4 (Thread 0x7f9249026700 (LWP 15779)):
#0  0x00007f925f4a7ed9 in g_mutex_lock () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f925f461a79 in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f925f46249b in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f925f46268c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f926540e0bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f92653b7bea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f92651e5f83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f9265d6cdf5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f92651eac38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f92615c56da in start_thread (arg=0x7f9249026700) at pthread_create.c:456
#10 0x00007f92647eed7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 3 (Thread 0x7f924a237700 (LWP 15778)):
#0  0x00007f92647e2d8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f925f462576 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f925f46268c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f926540e0bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f92653b7bea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f92651e5f83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f92674ec5d5 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f92651eac38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f92615c56da in start_thread (arg=0x7f924a237700) at pthread_create.c:456
#9  0x00007f92647eed7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 2 (Thread 0x7f9256ee1700 (LWP 15777)):
#0  0x00007f92647e2d8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f925eff7c62 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f925eff98d7 in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f9259a6bef9 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f92651eac38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f92615c56da in start_thread (arg=0x7f9256ee1700) at pthread_create.c:456
#6  0x00007f92647eed7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 1 (Thread 0x7f9269240440 (LWP 15776)):
[KCrash Handler]
#6  0x00007f926471b77f in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:58
#7  0x00007f926471d37a in __GI_abort () at abort.c:89
#8  0x00007f92651d13f7 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f92686330e3 in QSGRenderLoop::handleContextCreationFailure(QQuickWindow*, bool) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007f926863ab12 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007f926863aefb in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#12 0x00007f9266199415 in QWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#13 0x00007f9268671245 in QQuickWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007f926692035c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007f9266927b21 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007f92653b9c00 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f926618e6fd in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#18 0x00007f926618f30d in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#19 0x00007f926616d22b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#20 0x00007f9259aa26d0 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#21 0x00007f925f462377 in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f925f4625e0 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f925f46268c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f926540e09f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f92653b7bea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007f92653c033c in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00005599dd9c583a in  ()
#28 0x00007f92647063f1 in __libc_start_main (main=0x5599dd9c4ef0, argc=3, argv=0x7fff98377338, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff98377328) at ../csu/libc-start.c:291
#29 0x00005599dd9c59ba in _start ()

Reported using DrKonqi