Bug 394511

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:
I was entered in section "All" of discover, and the program crashed unexpectedly

-- Backtrace:
Application: Scopri (plasma-discover), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7ff3c4695e00 (LWP 1793))]

Thread 8 (Thread 0x7ff380912700 (LWP 1804)):
#0  0x00007ff3ce044929 in poll () at /lib64/libc.so.6
#1  0x00007ff3c7ab5b06 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007ff3c7ab5c30 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007ff3cef10c2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007ff3ceebf12b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007ff3ced0d9c6 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007ff3ced1211d in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#7  0x00007ff3cc3bc564 in start_thread () at /lib64/libpthread.so.0
#8  0x00007ff3ce04f31f in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7ff394e84700 (LWP 1800)):
#0  0x00007ff3c7ab29c1 in g_source_iter_next () at /lib64/libglib-2.0.so.0
#1  0x00007ff3c7ab5432 in g_main_context_check () at /lib64/libglib-2.0.so.0
#2  0x00007ff3c7ab5ab0 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007ff3c7ab5c30 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007ff3cef10c2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007ff3ceebf12b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007ff3ced0d9c6 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007ff3ced1211d in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007ff3cc3bc564 in start_thread () at /lib64/libpthread.so.0
#9  0x00007ff3ce04f31f in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7ff395685700 (LWP 1799)):
#0  0x00007ff3ce040374 in read () at /lib64/libc.so.6
#1  0x00007ff3c7afadd0 in g_wakeup_acknowledge () at /lib64/libglib-2.0.so.0
#2  0x00007ff3c7ab55fb in g_main_context_check () at /lib64/libglib-2.0.so.0
#3  0x00007ff3c7ab5ab0 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#4  0x00007ff3c7ab5c30 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#5  0x00007ff3cef10c2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007ff3ceebf12b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#7  0x00007ff3ced0d9c6 in QThread::exec() () at /lib64/libQt5Core.so.5
#8  0x00007ff3ced1211d in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007ff3cc3bc564 in start_thread () at /lib64/libpthread.so.0
#10 0x00007ff3ce04f31f in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7ff39dff2700 (LWP 1798)):
#0  0x00007ff3c7ab52f8 in g_main_context_query () at /lib64/libglib-2.0.so.0
#1  0x00007ff3c7ab5a87 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007ff3c7ab5c30 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007ff3cef10c2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007ff3ceebf12b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007ff3ced0d9c6 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007ff3d28c2a1a in QQuickPixmapReader::run() () at /lib64/libQt5Quick.so.5
#7  0x00007ff3ced1211d in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007ff3cc3bc564 in start_thread () at /lib64/libpthread.so.0
#9  0x00007ff3ce04f31f in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7ff3a75ef700 (LWP 1797)):
#0  0x00007ff3cef10b2f in postEventSourcePrepare(_GSource*, int*) () at /lib64/libQt5Core.so.5
#1  0x00007ff3c7ab5521 in g_main_context_check () at /lib64/libglib-2.0.so.0
#2  0x00007ff3c7ab5ab0 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007ff3c7ab5c30 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007ff3cef10c2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007ff3ceebf12b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007ff3ced0d9c6 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007ff3cf888339 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#8  0x00007ff3ced1211d in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007ff3cc3bc564 in start_thread () at /lib64/libpthread.so.0
#10 0x00007ff3ce04f31f in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7ff3ac94b700 (LWP 1796)):
#0  0x00007ff3ce040374 in read () at /lib64/libc.so.6
#1  0x00007ff3c7afadd0 in g_wakeup_acknowledge () at /lib64/libglib-2.0.so.0
#2  0x00007ff3c7ab55fb in g_main_context_check () at /lib64/libglib-2.0.so.0
#3  0x00007ff3c7ab5ab0 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#4  0x00007ff3c7ab5c30 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#5  0x00007ff3cef10c2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007ff3ceebf12b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#7  0x00007ff3ced0d9c6 in QThread::exec() () at /lib64/libQt5Core.so.5
#8  0x00007ff3d3603299 in QDBusConnectionManager::run() () at /lib64/libQt5DBus.so.5
#9  0x00007ff3ced1211d in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#10 0x00007ff3cc3bc564 in start_thread () at /lib64/libpthread.so.0
#11 0x00007ff3ce04f31f in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7ff3b53c5700 (LWP 1795)):
#0  0x00007ff3ce044929 in poll () at /lib64/libc.so.6
#1  0x00007ff3c743b04f in _xcb_conn_wait () at /lib64/libxcb.so.1
#2  0x00007ff3c743ccaa in xcb_wait_for_event () at /lib64/libxcb.so.1
#3  0x00007ff3b7d744d9 in QXcbEventReader::run() () at /lib64/libQt5XcbQpa.so.5
#4  0x00007ff3ced1211d in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#5  0x00007ff3cc3bc564 in start_thread () at /lib64/libpthread.so.0
#6  0x00007ff3ce04f31f in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7ff3c4695e00 (LWP 1793)):
[KCrash Handler]
#6  0x00007ff38eddc36d in AppStream::Component::name() const () at /lib64/libAppStreamQt.so.2
#7  0x00007ff380d85b42 in  () at /usr/lib64/qt5/plugins/discover/packagekit-backend.so
#8  0x00007ff3d2558d8d in AbstractResource::nameSortKey() () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#9  0x00007ff3d254bcc5 in ResourcesProxyModel::lessThan(AbstractResource*, AbstractResource*) const () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#10 0x00007ff3d254be94 in  () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#11 0x00007ff3d254f829 in ResourcesProxyModel::addResources(QVector<AbstractResource*> const&) () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#12 0x00007ff3ceee8de3 in QMetaObject::activate(QObject*, int, int, void**) () at /lib64/libQt5Core.so.5
#13 0x00007ff3d2568376 in ResultsStream::resourcesFound(QVector<AbstractResource*> const&) () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#14 0x00007ff3d254799c in AggregatedResultsStream::emitResults() () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#15 0x00007ff3d25479d9 in AggregatedResultsStream::clear() () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#16 0x00007ff3d2548d87 in AggregatedResultsStream::destruction(QObject*) () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#17 0x00007ff3ceee8de3 in QMetaObject::activate(QObject*, int, int, void**) () at /lib64/libQt5Core.so.5
#18 0x00007ff3ceee9413 in QObject::destroyed(QObject*) () at /lib64/libQt5Core.so.5
#19 0x00007ff3ceef044f in QObject::~QObject() () at /lib64/libQt5Core.so.5
#20 0x00007ff3d2557c8d in ResultsStream::~ResultsStream() () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#21 0x00007ff3ceee9a48 in QObject::event(QEvent*) () at /lib64/libQt5Core.so.5
#22 0x00007ff3d0d2ce95 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#23 0x00007ff3d0d3483a in QApplication::notify(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#24 0x00007ff3ceec0376 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib64/libQt5Core.so.5
#25 0x00007ff3ceec309b in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /lib64/libQt5Core.so.5
#26 0x00007ff3cef10ec7 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () at /lib64/libQt5Core.so.5
#27 0x00007ff3c7ab57cd in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#28 0x00007ff3c7ab5b98 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#29 0x00007ff3c7ab5c30 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#30 0x00007ff3cef10c13 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#31 0x00007ff3b7e02065 in QPAEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5XcbQpa.so.5
#32 0x00007ff3ceebf12b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#33 0x00007ff3ceec75b6 in QCoreApplication::exec() () at /lib64/libQt5Core.so.5
#34 0x000055ec6686be87 in  ()
#35 0x00007ff3cdf781bb in __libc_start_main () at /lib64/libc.so.6
#36 0x000055ec6686c42a in _start ()

Reported using DrKonqi