Application: plasma-discover (5.12.5)

Qt Version: 5.10.1
Frameworks Version: 5.44.0
Operating System: Linux 4.16.7-300.fc28.x86_64 x86_64
Distribution (Platform): Fedora RPMs

-- Information about the crash:
discover crahses on launch - every time and always, on the first mouse click !!!

The crash can be reproduced every time.

-- Backtrace:
Application: Découvrir (plasma-discover), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f7dc5741e00 (LWP 22108))]

Thread 10 (Thread 0x7f7d73fff700 (LWP 22120)):
#0  0x00007f7dcf0e8374 in read () at /lib64/libc.so.6
#1  0x00007f7dc8ba3dd0 in g_wakeup_acknowledge () at /lib64/libglib-2.0.so.0
#2  0x00007f7dc8b5e5fb in g_main_context_check () at /lib64/libglib-2.0.so.0
#3  0x00007f7dc8b5eab0 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#4  0x00007f7dc8b5ec30 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#5  0x00007f7dcffb8c2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f7dcff6712b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#7  0x00007f7dcfdb59c6 in QThread::exec() () at /lib64/libQt5Core.so.5
#8  0x00007f7dcfdba11d in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007f7dcd465564 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f7dcf0f731f in clone () at /lib64/libc.so.6

Thread 9 (Thread 0x7f7d81997700 (LWP 22118)):
#0  0x00007f7dcf0ec929 in poll () at /lib64/libc.so.6
#1  0x00007f7dc8b5eb06 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f7dc8b5ec30 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f7dcffb8c2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f7dcff6712b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f7dcfdb59c6 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f7dcfdba11d in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#7  0x00007f7dcd465564 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f7dcf0f731f in clone () at /lib64/libc.so.6

Thread 8 (Thread 0x7f7d831dd700 (LWP 22116)):
#0  0x00007f7dcf0ec929 in poll () at /lib64/libc.so.6
#1  0x00007f7dc8b5eb06 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f7dc8b5ec30 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f7dcffb8c2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f7dcff6712b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f7dcfdb59c6 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f7dcfdba11d in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#7  0x00007f7dcd465564 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f7dcf0f731f in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7f7d99a24700 (LWP 22115)):
#0  0x00007f7dcf0e8374 in read () at /lib64/libc.so.6
#1  0x00007f7dc8ba3dd0 in g_wakeup_acknowledge () at /lib64/libglib-2.0.so.0
#2  0x00007f7dc8b5e5fb in g_main_context_check () at /lib64/libglib-2.0.so.0
#3  0x00007f7dc8b5eab0 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#4  0x00007f7dc8b5ec30 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#5  0x00007f7dcffb8c2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f7dcff6712b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#7  0x00007f7dcfdb59c6 in QThread::exec() () at /lib64/libQt5Core.so.5
#8  0x00007f7dd396da1a in QQuickPixmapReader::run() () at /lib64/libQt5Quick.so.5
#9  0x00007f7dcfdba11d in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#10 0x00007f7dcd465564 in start_thread () at /lib64/libpthread.so.0
#11 0x00007f7dcf0f731f in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7f7d9ba43700 (LWP 22114)):
#0  0x00007f7dcd46b4fc in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f7da511f6f3 in  () at /usr/lib64/dri/r600_dri.so
#2  0x00007f7da511f40b in  () at /usr/lib64/dri/r600_dri.so
#3  0x00007f7dcd465564 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f7dcf0f731f in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7f7d9c65f700 (LWP 22113)):
#0  0x00007f7dcd46b4fc in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f7da511f6f3 in  () at /usr/lib64/dri/r600_dri.so
#2  0x00007f7da511f40b in  () at /usr/lib64/dri/r600_dri.so
#3  0x00007f7dcd465564 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f7dcf0f731f in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f7dac864700 (LWP 22112)):
#0  0x00007f7dc8ba5218 in g_mutex_unlock () at /lib64/libglib-2.0.so.0
#1  0x00007f7dc8b5e499 in g_main_context_check () at /lib64/libglib-2.0.so.0
#2  0x00007f7dc8b5eab0 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007f7dc8b5ec30 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007f7dcffb8c2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f7dcff6712b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f7dcfdb59c6 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007f7dd0930339 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#8  0x00007f7dcfdba11d in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007f7dcd465564 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f7dcf0f731f in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f7dada75700 (LWP 22111)):
#0  0x00007f7dcf0ec929 in poll () at /lib64/libc.so.6
#1  0x00007f7dc8b5eb06 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f7dc8b5ec30 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f7dcffb8c2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f7dcff6712b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f7dcfdb59c6 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f7dd46ae299 in QDBusConnectionManager::run() () at /lib64/libQt5DBus.so.5
#7  0x00007f7dcfdba11d in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f7dcd465564 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f7dcf0f731f in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f7db6474700 (LWP 22110)):
#0  0x00007f7dcf0ec929 in poll () at /lib64/libc.so.6
#1  0x00007f7dc84e404f in _xcb_conn_wait () at /lib64/libxcb.so.1
#2  0x00007f7dc84e5caa in xcb_wait_for_event () at /lib64/libxcb.so.1
#3  0x00007f7db8e234d9 in QXcbEventReader::run() () at /lib64/libQt5XcbQpa.so.5
#4  0x00007f7dcfdba11d in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#5  0x00007f7dcd465564 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f7dcf0f731f in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f7dc5741e00 (LWP 22108)):
[KCrash Handler]
#6  0x00007f7d8900136d in AppStream::Component::name() const () at /lib64/libAppStreamQt.so.2
#7  0x00007f7d82755b42 in  () at /usr/lib64/qt5/plugins/discover/packagekit-backend.so
#8  0x00007f7dd3603d8d in AbstractResource::nameSortKey() () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#9  0x00007f7dd35f6cc5 in ResourcesProxyModel::lessThan(AbstractResource*, AbstractResource*) const () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#10 0x00007f7dd35f6f35 in  () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#11 0x00007f7dd35fa829 in ResourcesProxyModel::addResources(QVector<AbstractResource*> const&) () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#12 0x00007f7dcff90de3 in QMetaObject::activate(QObject*, int, int, void**) () at /lib64/libQt5Core.so.5
#13 0x00007f7dd3613376 in ResultsStream::resourcesFound(QVector<AbstractResource*> const&) () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#14 0x00007f7dd35f299c in AggregatedResultsStream::emitResults() () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#15 0x00007f7dd35f29d9 in AggregatedResultsStream::clear() () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#16 0x00007f7dd35f3d87 in AggregatedResultsStream::destruction(QObject*) () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#17 0x00007f7dcff90de3 in QMetaObject::activate(QObject*, int, int, void**) () at /lib64/libQt5Core.so.5
#18 0x00007f7dcff91413 in QObject::destroyed(QObject*) () at /lib64/libQt5Core.so.5
#19 0x00007f7dcff9844f in QObject::~QObject() () at /lib64/libQt5Core.so.5
#20 0x00007f7dd3602c8d in ResultsStream::~ResultsStream() () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#21 0x00007f7dcff91a48 in QObject::event(QEvent*) () at /lib64/libQt5Core.so.5
#22 0x00007f7dd1dd2e95 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#23 0x00007f7dd1dda83a in QApplication::notify(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#24 0x00007f7dcff68376 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib64/libQt5Core.so.5
#25 0x00007f7dcff6b09b in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /lib64/libQt5Core.so.5
#26 0x00007f7dcffb8ec7 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () at /lib64/libQt5Core.so.5
#27 0x00007f7dc8b5e7cd in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#28 0x00007f7dc8b5eb98 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#29 0x00007f7dc8b5ec30 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#30 0x00007f7dcffb8c13 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#31 0x00007f7db8eb1065 in QPAEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5XcbQpa.so.5
#32 0x00007f7dcff6712b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#33 0x00007f7dcff6f5b6 in QCoreApplication::exec() () at /lib64/libQt5Core.so.5
#34 0x000055a26a4cce87 in  ()
#35 0x00007f7dcf0201bb in __libc_start_main () at /lib64/libc.so.6
#36 0x000055a26a4cd42a in _start ()

Reported using DrKonqi