Application: plasma-discover (5.12.5)

Qt Version: 5.9.5
Frameworks Version: 5.44.0
Operating System: Linux 4.15.0-22-lowlatency x86_64
Distribution: Ubuntu 18.04 LTS

-- Information about the crash:
- What I was doing when the application crashed:
I selected the update option from update plasmoid on my panel and the app would crash shortly after opening. It would crash before it displayed the needed updates on screen.

- Custom settings of the application:
I know I have a few non-working softwear repos on my apt list.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Discover (plasma-discover), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f4a529b2800 (LWP 10088))]

Thread 11 (Thread 0x7f4a031c6700 (LWP 10105)):
#0  0x00007f4a4a8ad9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55e30bb068f0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f4a4a8ad9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55e30bb068a0, cond=0x55e30bb068c8) at pthread_cond_wait.c:502
#2  0x00007f4a4a8ad9f3 in __pthread_cond_wait (cond=0x55e30bb068c8, mutex=0x55e30bb068a0) at pthread_cond_wait.c:655
#3  0x00007f4a4e6a059b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f4a51af8548 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f4a51af89aa in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f4a4e69f16d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4a4a8a76db in start_thread (arg=0x7f4a031c6700) at pthread_create.c:463
#8  0x00007f4a4df9588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f4a039c7700 (LWP 10101)):
#0  0x00007f4a4df840b4 in __GI___libc_read (fd=42, buf=0x7f4a039c6b90, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f4a487be960 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4a48779f27 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4a4877a3e0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4a4877a54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f4a4e8d690b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4a4e87b9ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4a4e69a22a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f4a4e69f16d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f4a4a8a76db in start_thread (arg=0x7f4a039c7700) at pthread_create.c:463
#10 0x00007f4a4df9588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f4a0aa4f700 (LWP 10099)):
#0  0x00007f4a4df88bf9 in __GI___poll (fds=0x7f4a04030890, nfds=1, timeout=63077) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f4a4877a439 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4a4877a54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4a4e8d690b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f4a4e87b9ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4a4e69a22a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4a4e69f16d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4a4a8a76db in start_thread (arg=0x7f4a0aa4f700) at pthread_create.c:463
#8  0x00007f4a4df9588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f4a1a574700 (LWP 10097)):
#0  0x00007f4a4df88bf9 in __GI___poll (fds=0x7f4a10003de0, nfds=1, timeout=10079) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f4a4877a439 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4a4877a54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4a4e8d690b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f4a4e87b9ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4a4e69a22a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4a4e69f16d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4a4a8a76db in start_thread (arg=0x7f4a1a574700) at pthread_create.c:463
#8  0x00007f4a4df9588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f4a1ad75700 (LWP 10096)):
#0  0x00007f4a4dfa4750 in __libc_disable_asynccancel () at ../sysdeps/unix/sysv/linux/x86_64/cancellation.S:92
#1  0x00007f4a4df88c0d in __GI___poll (fds=0x55e30a4c7440, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#2  0x00007f4a4877a439 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4a4877a7d2 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4a1cbb3e76 in  () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#5  0x00007f4a487a1e05 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f4a4a8a76db in start_thread (arg=0x7f4a1ad75700) at pthread_create.c:463
#7  0x00007f4a4df9588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f4a1b576700 (LWP 10095)):
#0  0x00007f4a4df840b4 in __GI___libc_read (fd=23, buf=0x7f4a1b575ce0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f4a487be960 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4a48779f27 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4a4877a3e0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4a4877a54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f4a4877a591 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f4a487a1e05 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f4a4a8a76db in start_thread (arg=0x7f4a1b576700) at pthread_create.c:463
#8  0x00007f4a4df9588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f4a26dd0700 (LWP 10094)):
#0  0x00007f4a48779e5c in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4a4877a3e0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4a4877a54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4a4e8d690b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f4a4e87b9ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4a4e69a22a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4a51a792a6 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f4a4e69f16d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f4a4a8a76db in start_thread (arg=0x7f4a26dd0700) at pthread_create.c:463
#9  0x00007f4a4df9588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f4a35e53700 (LWP 10091)):
#0  0x00007f4a4df840b4 in __GI___libc_read (fd=9, buf=0x7f4a35e52b70, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f4a487be960 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4a48779f27 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4a4877a3e0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4a4877a54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f4a4e8d690b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4a4e87b9ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4a4e69a22a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f4a4f2b06f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007f4a4e69f16d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f4a4a8a76db in start_thread (arg=0x7f4a35e53700) at pthread_create.c:463
#11 0x00007f4a4df9588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f4a37064700 (LWP 10090)):
#0  0x00007f4a487bfcd9 in g_mutex_lock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4a4877a41f in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4a4877a54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4a4e8d690b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f4a4e87b9ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4a4e69a22a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4a4fa8bd45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f4a4e69f16d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f4a4a8a76db in start_thread (arg=0x7f4a37064700) at pthread_create.c:463
#9  0x00007f4a4df9588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f4a404ac700 (LWP 10089)):
#0  0x00007f4a4df88bf9 in __GI___poll (fds=0x7f4a404abca8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f4a48511747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f4a4851336a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f4a432592a9 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f4a4e69f16d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4a4a8a76db in start_thread (arg=0x7f4a404ac700) at pthread_create.c:463
#6  0x00007f4a4df9588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f4a529b2800 (LWP 10088)):
[KCrash Handler]
#6  0x00007f4a1d32fae9 in AppStream::Component::name() const () at /usr/lib/x86_64-linux-gnu/libAppStreamQt.so.2
#7  0x00007f4a1d7b463e in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/discover/packagekit-backend.so
#8  0x00007f4a5170ac71 in UpdateItem::name() const () at /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#9  0x00007f4a5170af1f in  () at /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#10 0x00007f4a5170c222 in UpdateModel::setResources(QList<AbstractResource*> const&) () at /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#11 0x00007f4a5170c537 in UpdateModel::activityChanged() () at /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#12 0x00007f4a4e8ac6cf in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f4a51730aff in ResourcesModel::fetchingChanged(bool) () at /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#14 0x00007f4a5170f818 in ResourcesModel::slotFetching() () at /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#15 0x00007f4a4e8ac6cf in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007f4a51730512 in AbstractBackendUpdater::progressingChanged(bool) () at /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#17 0x00007f4a1d7a6078 in PackageKitBackend::getUpdatesFinished(PackageKit::Transaction::Exit, unsigned int) () at /usr/lib/x86_64-linux-gnu/qt5/plugins/discover/packagekit-backend.so
#18 0x00007f4a4e8ac6cf in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f4a1d562d2f in PackageKit::Transaction::finished(PackageKit::Transaction::Exit, unsigned int) () at /usr/lib/x86_64-linux-gnu/libpackagekitqt5.so.1
#20 0x00007f4a1d566f65 in  () at /usr/lib/x86_64-linux-gnu/libpackagekitqt5.so.1
#21 0x00007f4a1d5653b5 in  () at /usr/lib/x86_64-linux-gnu/libpackagekitqt5.so.1
#22 0x00007f4a4e8ac5b5 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007f4a1d5763bf in  () at /usr/lib/x86_64-linux-gnu/libpackagekitqt5.so.1
#24 0x00007f4a1d578705 in  () at /usr/lib/x86_64-linux-gnu/libpackagekitqt5.so.1
#25 0x00007f4a4fa970f8 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#26 0x00007f4a4e8ad122 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007f4a50b5182c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#28 0x00007f4a50b590f4 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#29 0x00007f4a4e87d9a8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007f4a4e88011d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007f4a4e8d72c3 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007f4a4877a287 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007f4a4877a4c0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007f4a4877a54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007f4a4e8d68ef in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#36 0x00007f4a4e87b9ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#37 0x00007f4a4e884a84 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#38 0x000055e307e12fc8 in  ()
#39 0x00007f4a4de95b97 in __libc_start_main (main=0x55e307e126f0, argc=3, argv=0x7ffe52d0a848, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe52d0a838) at ../csu/libc-start.c:310
#40 0x000055e307e1324a in _start ()

Reported using DrKonqi