Application: plasma-discover (5.12.5)

Qt Version: 5.10.1
Frameworks Version: 5.46.0
Operating System: Linux 4.16.8-300.fc28.x86_64 x86_64
Distribution: "Fedora release 28 (Twenty Eight)"

-- Information about the crash:
- What I was doing when the application crashed:
I opened Discover, and at the bottom left corner clicked "Installed" and the program crashed. The bug is repeatable on my system.

-- Backtrace:
Application: Discover (plasma-discover), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f4514999e00 (LWP 17055))]

Thread 13 (Thread 0x7f44d54c1700 (LWP 17987)):
#0  0x00007f451e354929 in poll () at /lib64/libc.so.6
#1  0x00007f4517dc5b06 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f4517dc5c30 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f451f220c2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f451f1cf12b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f451f01d9c6 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f451f02211d in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#7  0x00007f451c6cc564 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f451e35f31f in clone () at /lib64/libc.so.6

Thread 12 (Thread 0x7f44bcd13700 (LWP 17082)):
#0  0x00007f451e354929 in poll () at /lib64/libc.so.6
#1  0x00007f4517dc5b06 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f4517dc5c30 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f451f220c2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f451f1cf12b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f451f01d9c6 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f451f02211d in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#7  0x00007f451c6cc564 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f451e35f31f in clone () at /lib64/libc.so.6

Thread 11 (Thread 0x7f44bd9a3700 (LWP 17080)):
#0  0x00007f451e354929 in poll () at /lib64/libc.so.6
#1  0x00007f4517dc5b06 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f4517dc5ec2 in g_main_loop_run () at /lib64/libglib-2.0.so.0
#3  0x00007f44d42d060a in gdbus_shared_thread_func () at /lib64/libgio-2.0.so.0
#4  0x00007f4517dedcea in g_thread_proxy () at /lib64/libglib-2.0.so.0
#5  0x00007f451c6cc564 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f451e35f31f in clone () at /lib64/libc.so.6

Thread 10 (Thread 0x7f44be1a4700 (LWP 17079)):
#0  0x00007f451e350374 in read () at /lib64/libc.so.6
#1  0x00007f4517e0add0 in g_wakeup_acknowledge () at /lib64/libglib-2.0.so.0
#2  0x00007f4517dc55fb in g_main_context_check () at /lib64/libglib-2.0.so.0
#3  0x00007f4517dc5ab0 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#4  0x00007f4517dc5c30 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#5  0x00007f4517dc5c81 in glib_worker_main () at /lib64/libglib-2.0.so.0
#6  0x00007f4517dedcea in g_thread_proxy () at /lib64/libglib-2.0.so.0
#7  0x00007f451c6cc564 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f451e35f31f in clone () at /lib64/libc.so.6

Thread 9 (Thread 0x7f44d6adf700 (LWP 17075)):
#0  0x00007f451f21ef31 in QTimerInfoList::updateCurrentTime() () at /lib64/libQt5Core.so.5
#1  0x00007f451f22083f in timerSourceCheckHelper(GTimerSource*) () at /lib64/libQt5Core.so.5
#2  0x00007f4517dc5521 in g_main_context_check () at /lib64/libglib-2.0.so.0
#3  0x00007f4517dc5ab0 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#4  0x00007f4517dc5c30 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#5  0x00007f451f220c2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f451f1cf12b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#7  0x00007f451f01d9c6 in QThread::exec() () at /lib64/libQt5Core.so.5
#8  0x00007f451f02211d in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007f451c6cc564 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f451e35f31f in clone () at /lib64/libc.so.6

Thread 8 (Thread 0x7f44d72e0700 (LWP 17074)):
#0  0x00007f451e354929 in poll () at /lib64/libc.so.6
#1  0x00007f4517dc5b06 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f4517dc5c30 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f451f220c2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f451f1cf12b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f451f01d9c6 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f451f02211d in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#7  0x00007f451c6cc564 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f451e35f31f in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7f44e3fff700 (LWP 17073)):
#0  0x00007f4517dc52e7 in g_main_context_query () at /lib64/libglib-2.0.so.0
#1  0x00007f4517dc5a87 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f4517dc5c30 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f451f220c2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f451f1cf12b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f451f01d9c6 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f4522bd2a1a in QQuickPixmapReader::run() () at /lib64/libQt5Quick.so.5
#7  0x00007f451f02211d in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f451c6cc564 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f451e35f31f in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7f44ea674700 (LWP 17067)):
#0  0x00007f451c6d24fc in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f44f43986f3 in  () at /usr/lib64/dri/r600_dri.so
#2  0x00007f44f439840b in  () at /usr/lib64/dri/r600_dri.so
#3  0x00007f451c6cc564 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f451e35f31f in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7f44eb9c4700 (LWP 17065)):
#0  0x00007f451c6d24fc in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f44f43986f3 in  () at /usr/lib64/dri/r600_dri.so
#2  0x00007f44f439840b in  () at /usr/lib64/dri/r600_dri.so
#3  0x00007f451c6cc564 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f451e35f31f in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f44f75ef700 (LWP 17061)):
#0  0x00007f451e354929 in poll () at /lib64/libc.so.6
#1  0x00007f4517dc5b06 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f4517dc5c30 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f451f220c2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f451f1cf12b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f451f01d9c6 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f451fb98339 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007f451f02211d in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f451c6cc564 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f451e35f31f in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f44fccc1700 (LWP 17060)):
#0  0x00007f451e3548e0 in poll () at /lib64/libc.so.6
#1  0x00007f4517dc5b06 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f4517dc5c30 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f451f220c2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f451f1cf12b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f451f01d9c6 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f4523907299 in QDBusConnectionManager::run() () at /lib64/libQt5DBus.so.5
#7  0x00007f451f02211d in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f451c6cc564 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f451e35f31f in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f45056bd700 (LWP 17058)):
#0  0x00007f451e354929 in poll () at /lib64/libc.so.6
#1  0x00007f451774b04f in _xcb_conn_wait () at /lib64/libxcb.so.1
#2  0x00007f451774ccaa in xcb_wait_for_event () at /lib64/libxcb.so.1
#3  0x00007f450806c4d9 in QXcbEventReader::run() () at /lib64/libQt5XcbQpa.so.5
#4  0x00007f451f02211d in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#5  0x00007f451c6cc564 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f451e35f31f in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f4514999e00 (LWP 17055)):
[KCrash Handler]
#6  0x00007f44d486c36d in AppStream::Component::name() const () at /lib64/libAppStreamQt.so.2
#7  0x00007f44bcf7db42 in  () at /usr/lib64/qt5/plugins/discover/packagekit-backend.so
#8  0x00007f4522868d8d in AbstractResource::nameSortKey() () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#9  0x00007f452285bcd0 in ResourcesProxyModel::lessThan(AbstractResource*, AbstractResource*) const () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#10 0x00007f452285bfd8 in  () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#11 0x00007f452285f829 in ResourcesProxyModel::addResources(QVector<AbstractResource*> const&) () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#12 0x00007f451f1f8de3 in QMetaObject::activate(QObject*, int, int, void**) () at /lib64/libQt5Core.so.5
#13 0x00007f4522878376 in ResultsStream::resourcesFound(QVector<AbstractResource*> const&) () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#14 0x00007f452285799c in AggregatedResultsStream::emitResults() () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#15 0x00007f45228579d9 in AggregatedResultsStream::clear() () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#16 0x00007f4522858d87 in AggregatedResultsStream::destruction(QObject*) () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#17 0x00007f451f1f8de3 in QMetaObject::activate(QObject*, int, int, void**) () at /lib64/libQt5Core.so.5
#18 0x00007f451f1f9413 in QObject::destroyed(QObject*) () at /lib64/libQt5Core.so.5
#19 0x00007f451f20044f in QObject::~QObject() () at /lib64/libQt5Core.so.5
#20 0x00007f4522867c8d in ResultsStream::~ResultsStream() () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#21 0x00007f451f1f9a48 in QObject::event(QEvent*) () at /lib64/libQt5Core.so.5
#22 0x00007f452103ce95 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#23 0x00007f452104483a in QApplication::notify(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#24 0x00007f451f1d0376 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib64/libQt5Core.so.5
#25 0x00007f451f1d309b in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /lib64/libQt5Core.so.5
#26 0x00007f451f220ec7 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () at /lib64/libQt5Core.so.5
#27 0x00007f4517dc57cd in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#28 0x00007f4517dc5b98 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#29 0x00007f4517dc5c30 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#30 0x00007f451f220c13 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#31 0x00007f45080fa065 in QPAEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5XcbQpa.so.5
#32 0x00007f451f1cf12b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#33 0x00007f451f1d75b6 in QCoreApplication::exec() () at /lib64/libQt5Core.so.5
#34 0x000055f4be323e87 in  ()
#35 0x00007f451e2881bb in __libc_start_main () at /lib64/libc.so.6
#36 0x000055f4be32442a in _start ()

Reported using DrKonqi