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:
I was opening Discover from application menu (several times).
Same behavior is observed when opening from status bar.

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 0x7f8136bfc200 (LWP 8023))]

Thread 12 (Thread 0x7f80e75e4700 (LWP 8034)):
#0  0x00007f8132163bf9 in __GI___poll (fds=0x7f80d400a700, nfds=1, timeout=112672) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f812c6ce539 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f812c6ce64c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8132a9e04b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f8132a4230a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f813286dbba in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f8132878adb in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f812e8696db in start_thread (arg=0x7f80e75e4700) at pthread_create.c:463
#8  0x00007f813217088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f80e7de5700 (LWP 8033)):
#0  0x00007f812e86fed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f80e7de4c30, expected=0, futex_word=0x55d8d4c3da50) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f812e86fed9 in __pthread_cond_wait_common (abstime=0x7f80e7de4d00, mutex=0x55d8d4c3da00, cond=0x55d8d4c3da28) at pthread_cond_wait.c:533
#2  0x00007f812e86fed9 in __pthread_cond_timedwait (cond=0x55d8d4c3da28, mutex=0x55d8d4c3da00, abstime=0x7f80e7de4d00) at pthread_cond_wait.c:667
#3  0x00007f8132879880 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f813287028d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8132878adb in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f812e8696db in start_thread (arg=0x7f80e7de5700) at pthread_create.c:463
#7  0x00007f813217088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f80f5a5f700 (LWP 8032)):
#0  0x00007f812e86fed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f80f5a5ec30, expected=0, futex_word=0x7f80ec003470) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f812e86fed9 in __pthread_cond_wait_common (abstime=0x7f80f5a5ed00, mutex=0x7f80ec003420, cond=0x7f80ec003448) at pthread_cond_wait.c:533
#2  0x00007f812e86fed9 in __pthread_cond_timedwait (cond=0x7f80ec003448, mutex=0x7f80ec003420, abstime=0x7f80f5a5ed00) at pthread_cond_wait.c:667
#3  0x00007f8132879880 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f813287028d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8132878adb in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f812e8696db in start_thread (arg=0x7f80f5a5f700) at pthread_create.c:463
#7  0x00007f813217088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f80f6260700 (LWP 8031)):
#0  0x00007f813216a839 in syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f813286c594 in QSemaphore::acquire(int) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f8132a73310 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f813057738b in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#4  0x00007f813061126d in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#5  0x00007f8132a73075 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f813056cfa9 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#7  0x00007f813056d865 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#8  0x00007f8132a73075 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f813060ae9f in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#10 0x00007f81306079c0 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#11 0x00007f8130607d55 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#12 0x00007f81305ec451 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#13 0x00007f8132a73075 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f81305b4ce3 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#15 0x00007f81305b4d94 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#16 0x00007f81305c8651 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#17 0x00007f813405fe1c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007f81340673ef in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007f8132a43fe8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f8132a9ec7d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007f812c6ce387 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f812c6ce5c0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f812c6ce64c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f8132a9e02f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f8132a4230a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007f813286dbba in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007f8132878adb in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007f812e8696db in start_thread (arg=0x7f80f6260700) at pthread_create.c:463
#29 0x00007f813217088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f80f77fe700 (LWP 8030)):
#0  0x00007f8132163bf9 in __GI___poll (fds=0x55d8d50aca00, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f812c6ce539 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f812c6ce8d2 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8101374026 in  () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f812c6f6105 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f812e8696db in start_thread (arg=0x7f80f77fe700) at pthread_create.c:463
#6  0x00007f813217088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f80f7fff700 (LWP 8029)):
#0  0x00007f8132163bf9 in __GI___poll (fds=0x55d8d4e8a860, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f812c6ce539 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f812c6ce64c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f812c6ce691 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f812c6f6105 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f812e8696db in start_thread (arg=0x7f80f7fff700) at pthread_create.c:463
#6  0x00007f813217088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f80fff8a700 (LWP 8028)):
#0  0x00007f8132877a8d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007f8132a9df4a in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f812c6cda98 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f812c6ce46b in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f812c6ce64c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f8132a9e04b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f8132a4230a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f813286dbba in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f8132878adb in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f812e8696db in start_thread (arg=0x7f80fff8a700) at pthread_create.c:463
#10 0x00007f813217088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f810adc7700 (LWP 8027)):
#0  0x00007f813215f0b4 in __GI___libc_read (fd=13, buf=0x7f810adc6b20, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f812c712cd0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f812c6ce027 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f812c6ce4e0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f812c6ce64c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f8132a9e04b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f8132a4230a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f813286dbba in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f8135e7d826 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007f8132878adb in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f812e8696db in start_thread (arg=0x7f810adc7700) at pthread_create.c:463
#11 0x00007f813217088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f811a5de700 (LWP 8026)):
#0  0x00007f812c714049 in g_mutex_lock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f812c6cd905 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f812c6ce46b in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f812c6ce64c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f8132a9e04b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8132a4230a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f813286dbba in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f81334154f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f8132878adb in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f812e8696db in start_thread (arg=0x7f811a5de700) at pthread_create.c:463
#10 0x00007f813217088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f811b7ef700 (LWP 8025)):
#0  0x00007f812c714064 in g_mutex_unlock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f812c6cdec8 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f812c6ce4e0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f812c6ce64c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f8132a9e04b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8132a4230a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f813286dbba in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f813476fe45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#8  0x00007f8132878adb in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f812e8696db in start_thread (arg=0x7f811b7ef700) at pthread_create.c:463
#10 0x00007f813217088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f812405c700 (LWP 8024)):
#0  0x00007f8132163bf9 in __GI___poll (fds=0x7f812405bca8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f812be03747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f812be0536a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f812701ced9 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f8132878adb in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f812e8696db in start_thread (arg=0x7f812405c700) at pthread_create.c:463
#6  0x00007f813217088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f8136bfc200 (LWP 8023)):
[KCrash Handler]
#6  0x00007f8135b16d62 in AbstractResource::reportNewState() () at /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#7  0x00007f8132a7318f in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f80fc439cb5 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/discover/fwupd-backend.so
#9  0x00007f80fc43a4e7 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/discover/fwupd-backend.so
#10 0x00007f80fc43adc1 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/discover/fwupd-backend.so
#11 0x00007f8132a7318f in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f8132876223 in QFutureWatcherBase::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f813405fe1c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#14 0x00007f81340673ef in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007f8132a43fe8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007f8132a46b2d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f8132a9e9f3 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f812c6ce387 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007f812c6ce5c0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f812c6ce64c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f8132a9e02f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007f81270a8761 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#23 0x00007f8132a4230a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007f8132a4b4d0 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x000055d8d4402868 in  ()
#26 0x00007f8132070b97 in __libc_start_main (main=0x55d8d4401f90, argc=1, argv=0x7ffc32b368b8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc32b368a8) at ../csu/libc-start.c:310
#27 0x000055d8d4402aea in _start ()

Reported using DrKonqi