Bug 394258

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: "Fedora release 28 (Twenty Eight)"

-- Information about the crash:
Sometimes it takes a while until the application crashes sometines I need to click some software sections within the application.

The crash can be reproduced every time.

-- Backtrace:
Application: Entdecken (plasma-discover), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f654359ce00 (LWP 6379))]

Thread 10 (Thread 0x7f64eaffd700 (LWP 6398)):
#0  0x00007f653e0fb929 in poll () at /lib64/libc.so.6
#1  0x00007f6537b6db06 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f6537b6dc30 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f653efc7c2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f653ef7612b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f653edc49c6 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f653edc911d in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#7  0x00007f653c474564 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f653e10631f in clone () at /lib64/libc.so.6

Thread 9 (Thread 0x7f64ebfff700 (LWP 6392)):
#0  0x00007f6537bb41ed in g_mutex_lock () at /lib64/libglib-2.0.so.0
#1  0x00007f6537b6da10 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f6537b6dec2 in g_main_loop_run () at /lib64/libglib-2.0.so.0
#3  0x00007f64fee0e60a in gdbus_shared_thread_func () at /lib64/libgio-2.0.so.0
#4  0x00007f6537b95cea in g_thread_proxy () at /lib64/libglib-2.0.so.0
#5  0x00007f653c474564 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f653e10631f in clone () at /lib64/libc.so.6

Thread 8 (Thread 0x7f64f0d9f700 (LWP 6391)):
#0  0x00007f653e0f7374 in read () at /lib64/libc.so.6
#1  0x00007f6537bb2dd0 in g_wakeup_acknowledge () at /lib64/libglib-2.0.so.0
#2  0x00007f6537b6d5fb in g_main_context_check () at /lib64/libglib-2.0.so.0
#3  0x00007f6537b6dab0 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#4  0x00007f6537b6dc30 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#5  0x00007f6537b6dc81 in glib_worker_main () at /lib64/libglib-2.0.so.0
#6  0x00007f6537b95cea in g_thread_proxy () at /lib64/libglib-2.0.so.0
#7  0x00007f653c474564 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f653e10631f in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7f6504f9f700 (LWP 6389)):
#0  0x00007f6537b6a969 in g_source_iter_next () at /lib64/libglib-2.0.so.0
#1  0x00007f6537b6cf83 in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#2  0x00007f6537b6da3b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007f6537b6dc30 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007f653efc7c2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f653ef7612b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f653edc49c6 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007f653edc911d in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f653c474564 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f653e10631f in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7f650581b700 (LWP 6387)):
#0  0x00007f6537b6d6af in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#1  0x00007f6537b6db98 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f6537b6dc30 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f653efc7c2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f653ef7612b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f653edc49c6 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f653edc911d in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#7  0x00007f653c474564 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f653e10631f in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7f650e0d0700 (LWP 6386)):
#0  0x00007f653e0fb919 in poll () at /lib64/libc.so.6
#1  0x00007f6537b6db06 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f6537b6dc30 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f653efc7c2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f653ef7612b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f653edc49c6 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f654297ca1a in QQuickPixmapReader::run() () at /lib64/libQt5Quick.so.5
#7  0x00007f653edc911d in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f653c474564 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f653e10631f in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f65175ef700 (LWP 6385)):
#0  0x00007f653e0f73c0 in read () at /lib64/libc.so.6
#1  0x00007f6537bb2dd0 in g_wakeup_acknowledge () at /lib64/libglib-2.0.so.0
#2  0x00007f6537b6d5fb in g_main_context_check () at /lib64/libglib-2.0.so.0
#3  0x00007f6537b6dab0 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#4  0x00007f6537b6dc30 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#5  0x00007f653efc7c2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f653ef7612b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#7  0x00007f653edc49c6 in QThread::exec() () at /lib64/libQt5Core.so.5
#8  0x00007f653f93f339 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#9  0x00007f653edc911d in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#10 0x00007f653c474564 in start_thread () at /lib64/libpthread.so.0
#11 0x00007f653e10631f in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f651ca77700 (LWP 6384)):
#0  0x00007f6537bb4218 in g_mutex_unlock () at /lib64/libglib-2.0.so.0
#1  0x00007f6537b6cfe1 in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#2  0x00007f6537b6da3b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007f6537b6dc30 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007f653efc7c2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f653ef7612b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f653edc49c6 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007f65436a4299 in QDBusConnectionManager::run() () at /lib64/libQt5DBus.so.5
#8  0x00007f653edc911d in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007f653c474564 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f653e10631f in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f6525450700 (LWP 6383)):
#0  0x00007f653e0fb929 in poll () at /lib64/libc.so.6
#1  0x00007f65374f304f in _xcb_conn_wait () at /lib64/libxcb.so.1
#2  0x00007f65374f4caa in xcb_wait_for_event () at /lib64/libxcb.so.1
#3  0x00007f6527dfe4d9 in QXcbEventReader::run() () at /lib64/libQt5XcbQpa.so.5
#4  0x00007f653edc911d in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#5  0x00007f653c474564 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f653e10631f in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f654359ce00 (LWP 6379)):
[KCrash Handler]
#6  0x0000556e01a50de0 in  ()
#7  0x00007f65426120b0 in AbstractResourcesBackend::Filters::shouldFilter(AbstractResource*) const () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#8  0x00007f654261245b in AbstractResourcesBackend::Filters::filterJustInCase(QVector<AbstractResource*>&) const () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#9  0x00007f6542609716 in ResourcesProxyModel::addResources(QVector<AbstractResource*> const&) () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#10 0x00007f653ef9fde3 in QMetaObject::activate(QObject*, int, int, void**) () at /lib64/libQt5Core.so.5
#11 0x00007f6542622376 in ResultsStream::resourcesFound(QVector<AbstractResource*> const&) () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#12 0x00007f654260199c in AggregatedResultsStream::emitResults() () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#13 0x00007f65426019d9 in AggregatedResultsStream::clear() () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#14 0x00007f6542602d87 in AggregatedResultsStream::destruction(QObject*) () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#15 0x00007f653ef9fde3 in QMetaObject::activate(QObject*, int, int, void**) () at /lib64/libQt5Core.so.5
#16 0x00007f653efa0413 in QObject::destroyed(QObject*) () at /lib64/libQt5Core.so.5
#17 0x00007f653efa744f in QObject::~QObject() () at /lib64/libQt5Core.so.5
#18 0x00007f6542611c8d in ResultsStream::~ResultsStream() () at /usr/lib64/plasma-discover/libDiscoverCommon.so
#19 0x00007f653efa0a48 in QObject::event(QEvent*) () at /lib64/libQt5Core.so.5
#20 0x00007f6540de1e95 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#21 0x00007f6540de983a in QApplication::notify(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#22 0x00007f653ef77376 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib64/libQt5Core.so.5
#23 0x00007f653ef7a09b in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /lib64/libQt5Core.so.5
#24 0x00007f653efc7ec7 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () at /lib64/libQt5Core.so.5
#25 0x00007f6537b6d7cd in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#26 0x00007f6537b6db98 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#27 0x00007f6537b6dc30 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#28 0x00007f653efc7c13 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#29 0x00007f6527e8c065 in QPAEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5XcbQpa.so.5
#30 0x00007f653ef7612b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#31 0x00007f653ef7e5b6 in QCoreApplication::exec() () at /lib64/libQt5Core.so.5
#32 0x0000556dfc20de87 in  ()
#33 0x00007f653e02f1bb in __libc_start_main () at /lib64/libc.so.6
#34 0x0000556dfc20e42a in _start ()

Reported using DrKonqi