https://bugs.kde.org/show_bug.cgi?id=393937

            Bug ID: 393937
           Summary: Discover crashes when clicking "Settings"
           Product: Discover
           Version: 5.12.4
          Platform: Fedora RPMs
                OS: Linux
            Status: UNCONFIRMED
          Keywords: drkonqi
          Severity: normal
          Priority: NOR
         Component: discover
          Assignee: aleix...@kde.org
          Reporter: vosqueentr...@gmail.com
  Target Milestone: ---

Application: plasma-discover (5.12.4)

Qt Version: 5.10.1
Frameworks Version: 5.44.0
Operating System: Linux 4.16.5-300.fc28.x86_64 x86_64
Distribution: "Fedora release 28 (Twenty Eight)"

-- Information about the crash:
- What I was doing when the application crashed:
Trying to open "Settings" in Discover.

I started getting this Update Error notification one or two days a go (before
that I think Discover was fine):
"Error when getting information for file
“/var/cache/PackageKit/28/metadata/rpmfusion-nonfree/repodata/appstream.xml.gz”:
No such file or directory".

The only thing I recall doing was installing MS Visual Code, using the
instructions for Fedora on their site
(https://code.visualstudio.com/docs/setup/linux):
sudo rpm --import https://packages.microsoft.com/keys/microsoft.asc

sudo sh -c 'echo -e "[code]\nname=Visual Studio
Code\nbaseurl=https://packages.microsoft.com/yumrepos/vscode\nenabled=1\ngpgcheck=1\ngpgkey=https://packages.microsoft.com/keys/microsoft.asc";
> /etc/yum.repos.d/vscode.repo'

dnf check-update

sudo dnf install code

The crash can be reproduced every time.

-- Backtrace:
Application: Discover (plasma-discover), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fbc4093f940 (LWP 545))]

Thread 11 (Thread 0x7fbbf69e1700 (LWP 556)):
#0  0x00007fbc4aa9f929 in poll () from /lib64/libc.so.6
#1  0x00007fbc43b2fb06 in g_main_context_iterate.isra () from
/lib64/libglib-2.0.so.0
#2  0x00007fbc43b2fc30 in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#3  0x00007fbc4b96bc2b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib64/libQt5Core.so.5
#4  0x00007fbc4b91a12b in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQt5Core.so.5
#5  0x00007fbc4b7689c6 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007fbc4b76d11d in QThreadPrivate::start(void*) () from
/lib64/libQt5Core.so.5
#7  0x00007fbc48a7e564 in start_thread () from /lib64/libpthread.so.0
#8  0x00007fbc4aaaa31f in clone () from /lib64/libc.so.6

Thread 10 (Thread 0x7fbbf77fe700 (LWP 555)):
#0  0x00007fbc48a848e8 in pthread_cond_timedwait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007fbc4b76d736 in QWaitCondition::wait(QMutex*, unsigned long) () from
/lib64/libQt5Core.so.5
#2  0x00007fbc4b76a662 in QThreadPoolThread::run() () from
/lib64/libQt5Core.so.5
#3  0x00007fbc4b76d11d in QThreadPrivate::start(void*) () from
/lib64/libQt5Core.so.5
#4  0x00007fbc48a7e564 in start_thread () from /lib64/libpthread.so.0
#5  0x00007fbc4aaaa31f in clone () from /lib64/libc.so.6

Thread 9 (Thread 0x7fbbf7fff700 (LWP 554)):
#0  0x00007fbc4aa9b374 in read () from /lib64/libc.so.6
#1  0x00007fbc43b74dd0 in g_wakeup_acknowledge () from /lib64/libglib-2.0.so.0
#2  0x00007fbc43b2f5fb in g_main_context_check () from /lib64/libglib-2.0.so.0
#3  0x00007fbc43b2fab0 in g_main_context_iterate.isra () from
/lib64/libglib-2.0.so.0
#4  0x00007fbc43b2fc30 in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#5  0x00007fbc4b96bc2b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib64/libQt5Core.so.5
#6  0x00007fbc4b91a12b in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQt5Core.so.5
#7  0x00007fbc4b7689c6 in QThread::exec() () from /lib64/libQt5Core.so.5
#8  0x00007fbc4b76d11d in QThreadPrivate::start(void*) () from
/lib64/libQt5Core.so.5
#9  0x00007fbc48a7e564 in start_thread () from /lib64/libpthread.so.0
#10 0x00007fbc4aaaa31f in clone () from /lib64/libc.so.6

Thread 8 (Thread 0x7fbbfd91c700 (LWP 553)):
#0  0x00007fbc43b2eb04 in g_main_context_release () from
/lib64/libglib-2.0.so.0
#1  0x00007fbc43b2fac6 in g_main_context_iterate.isra () from
/lib64/libglib-2.0.so.0
#2  0x00007fbc43b2fc30 in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#3  0x00007fbc4b96bc2b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib64/libQt5Core.so.5
#4  0x00007fbc4b91a12b in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQt5Core.so.5
#5  0x00007fbc4b7689c6 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007fbc4b76d11d in QThreadPrivate::start(void*) () from
/lib64/libQt5Core.so.5
#7  0x00007fbc48a7e564 in start_thread () from /lib64/libpthread.so.0
#8  0x00007fbc4aaaa31f in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7fbc0ffff700 (LWP 552)):
#0  0x00007fbc4aa9f929 in poll () from /lib64/libc.so.6
#1  0x00007fbc43b2fb06 in g_main_context_iterate.isra () from
/lib64/libglib-2.0.so.0
#2  0x00007fbc43b2fc30 in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#3  0x00007fbc4b96bc2b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib64/libQt5Core.so.5
#4  0x00007fbc4b91a12b in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQt5Core.so.5
#5  0x00007fbc4b7689c6 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007fbc4f0eea1a in QQuickPixmapReader::run() () from
/lib64/libQt5Quick.so.5
#7  0x00007fbc4b76d11d in QThreadPrivate::start(void*) () from
/lib64/libQt5Core.so.5
#8  0x00007fbc48a7e564 in start_thread () from /lib64/libpthread.so.0
#9  0x00007fbc4aaaa31f in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7fbc15ef8700 (LWP 551)):
#0  0x00007fbc48a844fc in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007fbc1b4636f3 in ?? () from /usr/lib64/dri/r600_dri.so
#2  0x00007fbc1b46340b in ?? () from /usr/lib64/dri/r600_dri.so
#3  0x00007fbc48a7e564 in start_thread () from /lib64/libpthread.so.0
#4  0x00007fbc4aaaa31f in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7fbc17107700 (LWP 550)):
#0  0x00007fbc48a844fc in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007fbc1b4636f3 in ?? () from /usr/lib64/dri/r600_dri.so
#2  0x00007fbc1b46340b in ?? () from /usr/lib64/dri/r600_dri.so
#3  0x00007fbc48a7e564 in start_thread () from /lib64/libpthread.so.0
#4  0x00007fbc4aaaa31f in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7fbc235ef700 (LWP 549)):
#0  0x00007fbc43b2e9b8 in g_main_context_acquire () from
/lib64/libglib-2.0.so.0
#1  0x00007fbc43b2f9c5 in g_main_context_iterate.isra () from
/lib64/libglib-2.0.so.0
#2  0x00007fbc43b2fc30 in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#3  0x00007fbc4b96bc2b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib64/libQt5Core.so.5
#4  0x00007fbc4b91a12b in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQt5Core.so.5
#5  0x00007fbc4b7689c6 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007fbc4c2e3339 in QQmlThreadPrivate::run() () from
/lib64/libQt5Qml.so.5
#7  0x00007fbc4b76d11d in QThreadPrivate::start(void*) () from
/lib64/libQt5Core.so.5
#8  0x00007fbc48a7e564 in start_thread () from /lib64/libpthread.so.0
#9  0x00007fbc4aaaa31f in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7fbc28cc8700 (LWP 548)):
#0  0x00007fbc43b761ed in g_mutex_lock () from /lib64/libglib-2.0.so.0
#1  0x00007fbc43b2f235 in g_main_context_query () from /lib64/libglib-2.0.so.0
#2  0x00007fbc43b2fa87 in g_main_context_iterate.isra () from
/lib64/libglib-2.0.so.0
#3  0x00007fbc43b2fc30 in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#4  0x00007fbc4b96bc2b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib64/libQt5Core.so.5
#5  0x00007fbc4b91a12b in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQt5Core.so.5
#6  0x00007fbc4b7689c6 in QThread::exec() () from /lib64/libQt5Core.so.5
#7  0x00007fbc4fcf1299 in QDBusConnectionManager::run() () from
/lib64/libQt5DBus.so.5
#8  0x00007fbc4b76d11d in QThreadPrivate::start(void*) () from
/lib64/libQt5Core.so.5
#9  0x00007fbc48a7e564 in start_thread () from /lib64/libpthread.so.0
#10 0x00007fbc4aaaa31f in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7fbc3166b700 (LWP 547)):
#0  0x00007fbc4aa9f929 in poll () from /lib64/libc.so.6
#1  0x00007fbc434b504f in _xcb_conn_wait () from /lib64/libxcb.so.1
#2  0x00007fbc434b6caa in xcb_wait_for_event () from /lib64/libxcb.so.1
#3  0x00007fbc340194d9 in QXcbEventReader::run() () from
/lib64/libQt5XcbQpa.so.5
#4  0x00007fbc4b76d11d in QThreadPrivate::start(void*) () from
/lib64/libQt5Core.so.5
#5  0x00007fbc48a7e564 in start_thread () from /lib64/libpthread.so.0
#6  0x00007fbc4aaaa31f in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7fbc4093f940 (LWP 545)):
[KCrash Handler]
#6  0x00007fbc4ed83bba in
AbstractResourcesBackend::Filters::shouldFilter(AbstractResource*) const ()
from /usr/lib64/plasma-discover/libDiscoverCommon.so
#7  0x00007fbc4ed83f6b in
AbstractResourcesBackend::Filters::filterJustInCase(QVector<AbstractResource*>&)
const () from /usr/lib64/plasma-discover/libDiscoverCommon.so
#8  0x00007fbc4ed7b446 in
ResourcesProxyModel::addResources(QVector<AbstractResource*> const&) () from
/usr/lib64/plasma-discover/libDiscoverCommon.so
#9  0x00007fbc4b943de3 in QMetaObject::activate(QObject*, int, int, void**) ()
from /lib64/libQt5Core.so.5
#10 0x00007fbc4ed94636 in
ResultsStream::resourcesFound(QVector<AbstractResource*> const&) () from
/usr/lib64/plasma-discover/libDiscoverCommon.so
#11 0x00007fbc4ed736dc in AggregatedResultsStream::emitResults() () from
/usr/lib64/plasma-discover/libDiscoverCommon.so
#12 0x00007fbc4ed73719 in AggregatedResultsStream::clear() () from
/usr/lib64/plasma-discover/libDiscoverCommon.so
#13 0x00007fbc4ed74ab7 in AggregatedResultsStream::destruction(QObject*) ()
from /usr/lib64/plasma-discover/libDiscoverCommon.so
#14 0x00007fbc4b943de3 in QMetaObject::activate(QObject*, int, int, void**) ()
from /lib64/libQt5Core.so.5
#15 0x00007fbc4b944413 in QObject::destroyed(QObject*) () from
/lib64/libQt5Core.so.5
#16 0x00007fbc4b94b44f in QObject::~QObject() () from /lib64/libQt5Core.so.5
#17 0x00007fbc4ed8379d in ResultsStream::~ResultsStream() () from
/usr/lib64/plasma-discover/libDiscoverCommon.so
#18 0x00007fbc4b944a48 in QObject::event(QEvent*) () from
/lib64/libQt5Core.so.5
#19 0x00007fbc4ca73e95 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /lib64/libQt5Widgets.so.5
#20 0x00007fbc4ca7b83a in QApplication::notify(QObject*, QEvent*) () from
/lib64/libQt5Widgets.so.5
#21 0x00007fbc4b91b376 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() from /lib64/libQt5Core.so.5
#22 0x00007fbc4b91e09b in QCoreApplicationPrivate::sendPostedEvents(QObject*,
int, QThreadData*) () from /lib64/libQt5Core.so.5
#23 0x00007fbc4b96bec7 in postEventSourceDispatch(_GSource*, int (*)(void*),
void*) () from /lib64/libQt5Core.so.5
#24 0x00007fbc43b2f7cd in g_main_context_dispatch () from
/lib64/libglib-2.0.so.0
#25 0x00007fbc43b2fb98 in g_main_context_iterate.isra () from
/lib64/libglib-2.0.so.0
#26 0x00007fbc43b2fc30 in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#27 0x00007fbc4b96bc13 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib64/libQt5Core.so.5
#28 0x00007fbc340a7065 in
QPAEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib64/libQt5XcbQpa.so.5
#29 0x00007fbc4b91a12b in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQt5Core.so.5
#30 0x00007fbc4b9225b6 in QCoreApplication::exec() () from
/lib64/libQt5Core.so.5
#31 0x0000563e877bde47 in main ()

The reporter indicates this bug may be a duplicate of or related to bug 390480.

Possible duplicates by query: bug 393874, bug 392971, bug 390611, bug 390480,
bug 390129.

Reported using DrKonqi

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