Bug 430219

Summary: Discover crashes shortly after opening
Product: [Applications] Discover Reporter: alan.hamilton
Component: PackageKitAssignee: Dan Leinir Turthra Jensen <leinir>
Status: RESOLVED FIXED    
Severity: crash CC: aleixpol, john.liptrot, matheus-catarino, nate
Priority: NOR Keywords: drkonqi
Version First Reported In: 5.20.3   
Target Milestone: ---   
Platform: Fedora RPMs   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: New crash information added by DrKonqi
attachment-2870481-0.html

Description alan.hamilton 2020-12-10 14:03:55 UTC 
Application: plasma-discover (5.20.3)

Qt Version: 5.15.2
Frameworks Version: 5.75.0
Operating System: Linux 5.9.12-200.fc33.x86_64 x86_64
Windowing system: X11
Distribution: "Fedora release 33 (Thirty Three)"

-- Information about the crash:
Only displays "Loading" in the main window then it crashes.

The crash can be reproduced every time.

-- Backtrace:
Application: Discover (plasma-discover), signal: Segmentation fault

[KCrash Handler]
#4  0x00007f9ad625e0e4 in g_str_hash () from /lib64/libglib-2.0.so.0
#5  0x00007f9ad62690ce in g_hash_table_add () from /lib64/libglib-2.0.so.0
#6  0x00007f9ad5d33181 in as_cache_insert () from /lib64/libappstream.so.4
#7  0x00007f9ad5d4467e in as_pool_insert () from /lib64/libappstream.so.4
#8  0x00007f9ad5d44af9 in as_pool_add_component_internal () from /lib64/libappstream.so.4
#9  0x00007f9ad5d45625 in as_pool_load_collection_data.lto_priv () from /lib64/libappstream.so.4
#10 0x00007f9ad5d467f4 in as_pool_load () from /lib64/libappstream.so.4
#11 0x00007f9ad713458d in AppStream::Pool::load() () from /lib64/libAppStreamQt.so.2
#12 0x00007f9a806b7722 in loadAppStream(AppStream::Pool*) () from /usr/lib64/qt5/plugins/discover/packagekit-backend.so
#13 0x00007f9a806bf10b in QtConcurrent::StoredFunctorCall1<DelayedAppStreamLoad, DelayedAppStreamLoad (*)(AppStream::Pool*), AppStream::Pool*>::runFunctor() () from /usr/lib64/qt5/plugins/discover/packagekit-backend.so
#14 0x00007f9a806bfca3 in QtConcurrent::RunFunctionTask<DelayedAppStreamLoad>::run() [clone .lto_priv.0] () from /usr/lib64/qt5/plugins/discover/packagekit-backend.so
#15 0x00007f9ad7b50f9a in QThreadPoolThread::run() () from /lib64/libQt5Core.so.5
#16 0x00007f9ad7b4ddf0 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#17 0x00007f9ad6bbd3f9 in start_thread () from /lib64/libpthread.so.0
#18 0x00007f9ad77b3903 in clone () from /lib64/libc.so.6

Thread 11 (Thread 0x7f9a737fe640 (LWP 14938) "QNetworkAccessM"):
#1  0x00007f9ad6278835 in g_source_iter_next () from /lib64/libglib-2.0.so.0
#2  0x00007f9ad627a393 in g_main_context_prepare () from /lib64/libglib-2.0.so.0
#3  0x00007f9ad62cc4a3 in g_main_context_iterate.constprop () from /lib64/libglib-2.0.so.0
#4  0x00007f9ad6277bc3 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#5  0x00007f9ad7d3570b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007f9ad7ce757b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#7  0x00007f9ad7b4cb67 in QThread::exec() () from /lib64/libQt5Core.so.5
#8  0x00007f9ad7b4ddf0 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#9  0x00007f9ad6bbd3f9 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f9ad77b3903 in clone () from /lib64/libc.so.6

Thread 10 (Thread 0x7f9a73fff640 (LWP 14937) "Qt bearer threa"):
#1  0x00007f9ad627ab3c in g_main_context_check () from /lib64/libglib-2.0.so.0
#2  0x00007f9ad62cc51d in g_main_context_iterate.constprop () from /lib64/libglib-2.0.so.0
#3  0x00007f9ad6277bc3 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#4  0x00007f9ad7d3570b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f9ad7ce757b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007f9ad7b4cb67 in QThread::exec() () from /lib64/libQt5Core.so.5
#7  0x00007f9ad7b4ddf0 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#8  0x00007f9ad6bbd3f9 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f9ad77b3903 in clone () from /lib64/libc.so.6

Thread 9 (Thread 0x7f9a82543640 (LWP 14936) "CPMMListener"):
#1  0x00007f9ab2cb4172 in ?? () from /lib64/libnvidia-glcore.so.455.45.01
#2  0x00007f9ab2caefcc in ?? () from /lib64/libnvidia-glcore.so.455.45.01
#3  0x00007f9ad6bbd3f9 in start_thread () from /lib64/libpthread.so.0
#4  0x00007f9ad77b3903 in clone () from /lib64/libc.so.6

Thread 8 (Thread 0x7f9a82ffd640 (LWP 14935) "QSGRenderThread"):
#1  0x00007ffd51dcc9e7 in clock_gettime ()
#2  0x00007f9ad777a715 in clock_gettime@GLIBC_2.2.5 () from /lib64/libc.so.6
#3  0x00007f9ab2ca8e73 in ?? () from /lib64/libnvidia-glcore.so.455.45.01
#4  0x00007f9ab2dfdabc in ?? () from /lib64/libnvidia-glcore.so.455.45.01
#5  0x00007f9ab2da5653 in ?? () from /lib64/libnvidia-glcore.so.455.45.01
#6  0x00007f9ab2c9146e in ?? () from /lib64/libnvidia-glcore.so.455.45.01
#7  0x00007f9abdb37e42 in ?? () from /lib64/libGLX_nvidia.so.0
#8  0x00007f9abdb0c4c1 in glXSwapBuffers () from /lib64/libGLX_nvidia.so.0
#9  0x00007f9abddf3c9a in QGLXContext::swapBuffers(QPlatformSurface*) () from /usr/lib64/qt5/plugins/xcbglintegrations/libqxcb-glx-integration.so
#10 0x00007f9ad96fac9c in QSGRenderThread::syncAndRender(QImage*) () from /lib64/libQt5Quick.so.5
#11 0x00007f9ad96fd7cf in QSGRenderThread::run() () from /lib64/libQt5Quick.so.5
#12 0x00007f9ad7b4ddf0 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#13 0x00007f9ad6bbd3f9 in start_thread () from /lib64/libpthread.so.0
#14 0x00007f9ad77b3903 in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7f9a837fe640 (LWP 14934) "gdbus"):
#1  0x00007f9ad62cc576 in g_main_context_iterate.constprop () from /lib64/libglib-2.0.so.0
#2  0x00007f9ad6279eb3 in g_main_loop_run () from /lib64/libglib-2.0.so.0
#3  0x00007f9ad5bf5d1a in gdbus_shared_thread_func.lto_priv () from /lib64/libgio-2.0.so.0
#4  0x00007f9ad62a8132 in g_thread_proxy () from /lib64/libglib-2.0.so.0
#5  0x00007f9ad6bbd3f9 in start_thread () from /lib64/libpthread.so.0
#6  0x00007f9ad77b3903 in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7f9aa8b67640 (LWP 14932) "gmain"):
#1  0x00007f9ad77a87f7 in poll () from /lib64/libc.so.6
#2  0x00007f9ad62cc576 in g_main_context_iterate.constprop () from /lib64/libglib-2.0.so.0
#3  0x00007f9ad6277bc3 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#4  0x00007f9ad62797e1 in glib_worker_main () from /lib64/libglib-2.0.so.0
#5  0x00007f9ad62a8132 in g_thread_proxy () from /lib64/libglib-2.0.so.0
#6  0x00007f9ad6bbd3f9 in start_thread () from /lib64/libpthread.so.0
#7  0x00007f9ad77b3903 in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7f9abc97c640 (LWP 14923) "QQuickPixmapRea"):
#1  0x00007f9ad627ab3c in g_main_context_check () from /lib64/libglib-2.0.so.0
#2  0x00007f9ad62cc51d in g_main_context_iterate.constprop () from /lib64/libglib-2.0.so.0
#3  0x00007f9ad6277bc3 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#4  0x00007f9ad7d3570b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f9ad7ce757b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007f9ad7b4cb67 in QThread::exec() () from /lib64/libQt5Core.so.5
#7  0x00007f9ad96528aa in QQuickPixmapReader::run() () from /lib64/libQt5Quick.so.5
#8  0x00007f9ad7b4ddf0 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#9  0x00007f9ad6bbd3f9 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f9ad77b3903 in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7f9abf5ef640 (LWP 14922) "QQmlThread"):
#1  0x00007f9ad6278818 in g_source_iter_next () from /lib64/libglib-2.0.so.0
#2  0x00007f9ad627ab93 in g_main_context_check () from /lib64/libglib-2.0.so.0
#3  0x00007f9ad62cc51d in g_main_context_iterate.constprop () from /lib64/libglib-2.0.so.0
#4  0x00007f9ad6277bc3 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#5  0x00007f9ad7d3570b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007f9ad7ce757b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#7  0x00007f9ad7b4cb67 in QThread::exec() () from /lib64/libQt5Core.so.5
#8  0x00007f9ad82895ec in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#9  0x00007f9ad7b4ddf0 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#10 0x00007f9ad6bbd3f9 in start_thread () from /lib64/libpthread.so.0
#11 0x00007f9ad77b3903 in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7f9ac4ae6640 (LWP 14921) "QDBusConnection"):
#1  0x00007f9ad627ab3c in g_main_context_check () from /lib64/libglib-2.0.so.0
#2  0x00007f9ad62cc51d in g_main_context_iterate.constprop () from /lib64/libglib-2.0.so.0
#3  0x00007f9ad6277bc3 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#4  0x00007f9ad7d3570b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f9ad7ce757b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007f9ad7b4cb67 in QThread::exec() () from /lib64/libQt5Core.so.5
#7  0x00007f9ad918110b in QDBusConnectionManager::run() () from /lib64/libQt5DBus.so.5
#8  0x00007f9ad7b4ddf0 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#9  0x00007f9ad6bbd3f9 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f9ad77b3903 in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f9ac5a14640 (LWP 14920) "QXcbEventQueue"):
#1  0x00007f9ad6170842 in _xcb_conn_wait.part.0 () from /lib64/libxcb.so.1
#2  0x00007f9ad61721cc in xcb_wait_for_event () from /lib64/libxcb.so.1
#3  0x00007f9ac5bd5448 in QXcbEventQueue::run() () from /lib64/libQt5XcbQpa.so.5
#4  0x00007f9ad7b4ddf0 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#5  0x00007f9ad6bbd3f9 in start_thread () from /lib64/libpthread.so.0
#6  0x00007f9ad77b3903 in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f9ad31fc940 (LWP 14919) "plasma-discover"):
#1  0x00007f9ad7b539bb in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib64/libQt5Core.so.5
#2  0x00007f9ad96f9426 in QSGThreadedRenderLoop::polishAndSync(QSGThreadedRenderLoop::Window*, bool) () from /lib64/libQt5Quick.so.5
#3  0x00007f9ad974ff48 in QQuickWindow::event(QEvent*) () from /lib64/libQt5Quick.so.5
#4  0x00007f9ad8c24ec3 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#5  0x00007f9ad7ce8bd8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib64/libQt5Core.so.5
#6  0x00007f9ad85bbfa4 in QPlatformWindow::windowEvent(QEvent*) () from /lib64/libQt5Gui.so.5
#7  0x00007f9ad8c2baaa in QApplication::notify(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#8  0x00007f9ad7ce8bd8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib64/libQt5Core.so.5
#9  0x00007f9ad7d34a03 in QTimerInfoList::activateTimers() () from /lib64/libQt5Core.so.5
#10 0x00007f9ad7d352fc in timerSourceDispatch(_GSource*, int (*)(void*), void*) () from /lib64/libQt5Core.so.5
#11 0x00007f9ad627a7ef in g_main_context_dispatch () from /lib64/libglib-2.0.so.0
#12 0x00007f9ad62cc5d8 in g_main_context_iterate.constprop () from /lib64/libglib-2.0.so.0
#13 0x00007f9ad6277bc3 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#14 0x00007f9ad7d3570b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#15 0x00007f9ad7ce757b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#16 0x00007f9ad7cef1b4 in QCoreApplication::exec() () from /lib64/libQt5Core.so.5
#17 0x000055af2b080654 in main ()
[Inferior 1 (process 14919) detached]

Reported using DrKonqi
Comment 1 Nate Graham 2020-12-10 17:17:03 UTC 
#11 0x00007f9ad713458d in AppStream::Pool::load() () from /lib64/libAppStreamQt.so.2
#12 0x00007f9a806b7722 in loadAppStream(AppStream::Pool*) () from /usr/lib64/qt5/plugins/discover/packagekit-backend.so
#13 0x00007f9a806bf10b in QtConcurrent::StoredFunctorCall1<DelayedAppStreamLoad, DelayedAppStreamLoad (*)(AppStream::Pool*), AppStream::Pool*>::runFunctor() () from /usr/lib64/qt5/plugins/discover/packagekit-backend.so
#14 0x00007f9a806bfca3 in QtConcurrent::RunFunctionTask<DelayedAppStreamLoad>::run() [clone .lto_priv.0] () from /usr/lib64/qt5/plugins/discover/packagekit-backend.so
Comment 2 Matheus Catarino 2021-02-04 12:55:49 UTC 
Created attachment 135419 [details]
New crash information added by DrKonqi

plasma-discover (5.20.5) using Qt 5.15.2

- What I was doing when the application crashed:
   The application freezes every time it launches updating search.
- Unusual behavior I noticed:
    After initializing the system, the problem happens every time you open the discoverer. I've already checked if there was a problem with the video driver, but there was no problem with the driver (visibly detectable).

-- Backtrace (Reduced):
#5  0x00007f41cabf0f1e in as_content_rating_set_value () at /usr/lib/libappstream.so.4
[...]
#9  0x00007f41cabf7125 in as_metadata_parse_file () at /usr/lib/libappstream.so.4
#10 0x00007f41cabfb49c in as_pool_load () at /usr/lib/libappstream.so.4
#11 0x00007f41cc2b277a in AppStream::Pool::load() () at /usr/lib/libAppStreamQt.so.2
[...]
#4  0x00007f41ccece6fc in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
Comment 3 john.liptrot 2025-10-10 20:06:22 UTC 
Hi,

Is this still an issue for you in the most recent version of KDE software your distributions provides?

Thanks.
Comment 4 Matheus Catarino 2025-10-11 12:31:16 UTC 
Created attachment 185690 [details]
attachment-2870481-0.html

Hi John,

Currently, this issue isn't happening under the latest version of KDE (discover v6.4.5) on Arch Linux.



Regards,
--------------
Matheus C. França
________________________________
De: bugzilla_noreply@kde.org <bugzilla_noreply@kde.org>
Enviado: sexta-feira, 10 de outubro de 2025 17:06
Para: matheus-catarino@hotmail.com <matheus-catarino@hotmail.com>
Assunto: [Discover] [Bug 430219] Discover crashes shortly after opening

https://bugs.kde.org/show_bug.cgi?id=430219

john.liptrot@proton.me changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |john.liptrot@proton.me
             Status|REPORTED                    |NEEDSINFO
         Resolution|---                         |WAITINGFORINFO

--- Comment #3 from john.liptrot@proton.me ---
Hi,

Is this still an issue for you in the most recent version of KDE software your
distributions provides?

Thanks.

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