Application: plasma-discover (5.14.5)

Qt Version: 5.11.2
Frameworks Version: 5.54.0
Operating System: Linux 4.15.0-43-generic x86_64
Distribution: KDE neon User Edition 5.14

-- Information about the crash:
- What I was doing when the application crashed:
When I start discover. I see that the window is being created (not painted though). Then it freezes, and after a few seconds it crashes. This has happened to a system at home and at work.

The crash can be reproduced every time.

-- Backtrace:
Application: Discover (plasma-discover), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f94fec9b200 (LWP 9241))]

Thread 13 (Thread 0x7f94aea80700 (LWP 9299)):
#0  0x00007f94f69169f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55b0752f14e4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f94f69169f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55b0752f1490, cond=0x55b0752f14b8) at pthread_cond_wait.c:502
#2  0x00007f94f69169f3 in __pthread_cond_wait (cond=0x55b0752f14b8, mutex=0x55b0752f1490) at pthread_cond_wait.c:655
#3  0x00007f94fa92094b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f94fdfa3b18 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f94fdfa3f4a in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f94fa91fadb in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f94f69106db in start_thread (arg=0x7f94aea80700) at pthread_create.c:463
#8  0x00007f94fa21788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f94af281700 (LWP 9298)):
#0  0x00007f94f6916ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f94af280c30, expected=0, futex_word=0x55b071cc20b0) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f94f6916ed9 in __pthread_cond_wait_common (abstime=0x7f94af280d00, mutex=0x55b071cc2060, cond=0x55b071cc2088) at pthread_cond_wait.c:533
#2  0x00007f94f6916ed9 in __pthread_cond_timedwait (cond=0x55b071cc2088, mutex=0x55b071cc2060, abstime=0x7f94af280d00) at pthread_cond_wait.c:667
#3  0x00007f94fa920880 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f94fa91728d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f94fa91fadb in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f94f69106db in start_thread (arg=0x7f94af281700) at pthread_create.c:463
#7  0x00007f94fa21788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f94afa82700 (LWP 9297)):
#0  0x00007f94fa211839 in syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f94fa913594 in QSemaphore::acquire(int) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f94fab1a310 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f94f861e38b in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#4  0x00007f94f86b826d in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#5  0x00007f94fab1a075 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f94f8613fa9 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#7  0x00007f94f8614865 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#8  0x00007f94fab1a075 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f94f86b1e9f in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#10 0x00007f94f86ae9c0 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#11 0x00007f94f86aed55 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#12 0x00007f94f8693451 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#13 0x00007f94fab1a075 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f94f865bce3 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#15 0x00007f94f865bd94 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#16 0x00007f94f866f651 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#17 0x00007f94fc106e1c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007f94fc10e3ef in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007f94faaeafe8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f94fab45c7d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007f94f4774387 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f94f47745c0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f94f477464c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f94fab4504b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f94faae930a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007f94fa914bba in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007f94fa91fadb in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007f94f69106db in start_thread (arg=0x7f94afa82700) at pthread_create.c:463
#29 0x00007f94fa21788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f94b640f700 (LWP 9250)):
#0  0x00007f94fa20abf9 in __GI___poll (fds=0x55b0721c9730, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f94f4774539 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f94f47748d2 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f94c99f2026 in  () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f94f479c105 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f94f69106db in start_thread (arg=0x7f94b640f700) at pthread_create.c:463
#6  0x00007f94fa21788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f94b6c10700 (LWP 9249)):
#0  0x00007f94fa2060b4 in __GI___libc_read (fd=31, buf=0x7f94b6c0fce0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f94f47b8cd0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f94f4774027 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f94f47744e0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f94f477464c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f94f4774691 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f94f479c105 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f94f69106db in start_thread (arg=0x7f94b6c10700) at pthread_create.c:463
#8  0x00007f94fa21788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f94c4c50700 (LWP 9248)):
#0  0x00007f94f6916ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f94c4c4fc30, expected=0, futex_word=0x7f94b8005ff0) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f94f6916ed9 in __pthread_cond_wait_common (abstime=0x7f94c4c4fd00, mutex=0x7f94b8005fa0, cond=0x7f94b8005fc8) at pthread_cond_wait.c:533
#2  0x00007f94f6916ed9 in __pthread_cond_timedwait (cond=0x7f94b8005fc8, mutex=0x7f94b8005fa0, abstime=0x7f94c4c4fd00) at pthread_cond_wait.c:667
#3  0x00007f94fa920880 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f94fa91728d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f94fa91fadb in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f94f69106db in start_thread (arg=0x7f94c4c50700) at pthread_create.c:463
#7  0x00007f94fa21788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f94c5451700 (LWP 9247)):
#0  0x00007f94fa20abf9 in __GI___poll (fds=0x7f94b8014820, nfds=1, timeout=126166) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f94f4774539 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f94f477464c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f94fab4504b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f94faae930a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f94fa914bba in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f94fa91fadb in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f94f69106db in start_thread (arg=0x7f94c5451700) at pthread_create.c:463
#8  0x00007f94fa21788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f94c69d2700 (LWP 9246)):
#0  0x00007f94f47ba064 in g_mutex_unlock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f94f4773a88 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f94f477446b in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f94f477464c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f94fab4504b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f94faae930a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f94fa914bba in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f94fa91fadb in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f94f69106db in start_thread (arg=0x7f94c69d2700) at pthread_create.c:463
#9  0x00007f94fa21788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f94d2fe4700 (LWP 9245)):
#0  0x00007f94fa20abf9 in __GI___poll (fds=0x7f94cc004db0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f94f4774539 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f94f477464c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f94fab4504b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f94faae930a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f94fa914bba in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f94fdf24826 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f94fa91fadb in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f94f69106db in start_thread (arg=0x7f94d2fe4700) at pthread_create.c:463
#9  0x00007f94fa21788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f94e27e2700 (LWP 9244)):
#0  0x00007f94fa20abf9 in __GI___poll (fds=0x7f94d4004a00, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f94f4774539 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f94f477464c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f94fab4504b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f94faae930a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f94fa914bba in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f94fb4bc4f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f94fa91fadb in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f94f69106db in start_thread (arg=0x7f94e27e2700) at pthread_create.c:463
#9  0x00007f94fa21788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f94e39f3700 (LWP 9243)):
#0  0x00007f94fa20abf9 in __GI___poll (fds=0x7f94dc019000, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f94f4774539 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f94f477464c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f94fab4504b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f94faae930a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f94fa914bba in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f94fc816e45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f94fa91fadb in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f94f69106db in start_thread (arg=0x7f94e39f3700) at pthread_create.c:463
#9  0x00007f94fa21788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f94ec232700 (LWP 9242)):
#0  0x00007f94fa20abf9 in __GI___poll (fds=0x7f94ec231ca8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f94f3ea9747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f94f3eab36a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f94ef1f2ed9 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f94fa91fadb in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f94f69106db in start_thread (arg=0x7f94ec232700) at pthread_create.c:463
#6  0x00007f94fa21788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f94fec9b200 (LWP 9241)):
[KCrash Handler]
#6  0x00007f94fdbbdd62 in AbstractResource::reportNewState() () at /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#7  0x00007f94fab1a18f in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f94b5a02cb5 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/discover/fwupd-backend.so
#9  0x00007f94b5a034e7 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/discover/fwupd-backend.so
#10 0x00007f94b5a03dc1 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/discover/fwupd-backend.so
#11 0x00007f94fab1a18f in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f94fa91d223 in QFutureWatcherBase::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f94fc106e1c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#14 0x00007f94fc10e3ef in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007f94faaeafe8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007f94faaedb2d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f94fab459f3 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f94f4774387 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007f94f47745c0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f94f477464c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f94fab4502f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007f94ef27e761 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#23 0x00007f94faae930a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007f94faaf24d0 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x000055b06f954868 in  ()
#26 0x00007f94fa117b97 in __libc_start_main (main=0x55b06f953f90, argc=1, argv=0x7ffe5b349e58, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe5b349e48) at ../csu/libc-start.c:310
#27 0x000055b06f954aea in _start ()

Reported using DrKonqi