Application: plasma-discover (5.12.5)

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

-- Information about the crash:
I got home, switched the pc on, started the app from the tray and it crashed

The crash can be reproduced every time.

-- 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 0x7fac17fd4800 (LWP 5384))]

Thread 11 (Thread 0x7fabc6dcc700 (LWP 5429)):
#0  0x00007fac0fec99f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5586af769c50) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fac0fec99f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x5586af769c00, cond=0x5586af769c28) at pthread_cond_wait.c:502
#2  0x00007fac0fec99f3 in __pthread_cond_wait (cond=0x5586af769c28, mutex=0x5586af769c00) at pthread_cond_wait.c:655
#3  0x00007fac13cbc59b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fac17114548 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007fac171149aa in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007fac13cbb16d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fac0fec36db in start_thread (arg=0x7fabc6dcc700) at pthread_create.c:463
#8  0x00007fac135b188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7fabc75cd700 (LWP 5427)):
#0  0x00007fac134b1f27 in __GI___errno_location () at errno-loc.c:26
#1  0x00007fac0dcd6441 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fac0dcd654c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fac13ef290b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fac13e979ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fac13cb622a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fac13cbb16d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fac0fec36db in start_thread (arg=0x7fabc75cd700) at pthread_create.c:463
#8  0x00007fac135b188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7fabdd165700 (LWP 5425)):
#0  0x00007fac0dd1bcd9 in g_mutex_lock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fac0dcd5e5c in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fac0dcd63e0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fac0dcd654c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fac13ef290b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fac13e979ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fac13cb622a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fac13cbb16d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fac0fec36db in start_thread (arg=0x7fabdd165700) at pthread_create.c:463
#9  0x00007fac135b188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7fabdefa1700 (LWP 5404)):
#0  0x00007fac135a4bf9 in __GI___poll (fds=0x7fabd4003600, nfds=1, timeout=9530) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fac0dcd6439 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fac0dcd654c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fac13ef290b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fac13e979ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fac13cb622a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fac13cbb16d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fac0fec36db in start_thread (arg=0x7fabdefa1700) at pthread_create.c:463
#8  0x00007fac135b188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7fabdf7a2700 (LWP 5403)):
#0  0x00007fac135c06ff in __libc_enable_asynccancel () at ../sysdeps/unix/sysv/linux/x86_64/cancellation.S:67
#1  0x00007fac135a4be6 in __GI___poll (fds=0x5586ae14d130, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#2  0x00007fac0dcd6439 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fac0dcd67d2 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fabe15e0e76 in  () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#5  0x00007fac0dcfde05 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fac0fec36db in start_thread (arg=0x7fabdf7a2700) at pthread_create.c:463
#7  0x00007fac135b188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7fabdffa3700 (LWP 5402)):
#0  0x00007fac0dd1bcf4 in g_mutex_unlock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fac0dcd5dc8 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fac0dcd63e0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fac0dcd654c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fac0dcd6591 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fac0dcfde05 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fac0fec36db in start_thread (arg=0x7fabdffa3700) at pthread_create.c:463
#7  0x00007fac135b188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fabeb8e1700 (LWP 5396)):
#0  0x00007fac135a4bf9 in __GI___poll (fds=0x7fabe4004db0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fac0dcd6439 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fac0dcd654c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fac13ef290b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fac13e979ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fac13cb622a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fac170952a6 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007fac13cbb16d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fac0fec36db in start_thread (arg=0x7fabeb8e1700) at pthread_create.c:463
#9  0x00007fac135b188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fabf8a5e700 (LWP 5391)):
#0  0x00007fac0dcd63e2 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fac0dcd654c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fac13ef290b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fac13e979ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fac13cb622a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fac148cc6f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#6  0x00007fac13cbb16d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fac0fec36db in start_thread (arg=0x7fabf8a5e700) at pthread_create.c:463
#8  0x00007fac135b188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fabf9c6f700 (LWP 5389)):
#0  0x00007fac135a4bf9 in __GI___poll (fds=0x7fabf4019050, nfds=1, timeout=17545) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fac0dcd6439 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fac0dcd654c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fac13ef290b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fac13e979ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fac13cb622a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fac150a7d45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007fac13cbb16d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fac0fec36db in start_thread (arg=0x7fabf9c6f700) at pthread_create.c:463
#9  0x00007fac135b188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fac030d8700 (LWP 5388)):
#0  0x00007fac135a4bf9 in __GI___poll (fds=0x7fac030d7ca8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fac0da6d747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fac0da6f36a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fac05c732a9 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fac13cbb16d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fac0fec36db in start_thread (arg=0x7fac030d8700) at pthread_create.c:463
#6  0x00007fac135b188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fac17fd4800 (LWP 5384)):
[KCrash Handler]
#6  0x00007fabe1d5cae9 in AppStream::Component::name() const () at /usr/lib/x86_64-linux-gnu/libAppStreamQt.so.2
#7  0x00007fabe21e163e in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/discover/packagekit-backend.so
#8  0x00007fac16d26c71 in UpdateItem::name() const () at /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#9  0x00007fac16d26e81 in  () at /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#10 0x00007fac16d28222 in UpdateModel::setResources(QList<AbstractResource*> const&) () at /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#11 0x00007fac16d28537 in UpdateModel::activityChanged() () at /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#12 0x00007fac13ec86cf in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007fac16d4caff in ResourcesModel::fetchingChanged(bool) () at /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#14 0x00007fac16d2b818 in ResourcesModel::slotFetching() () at /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#15 0x00007fac13ec86cf in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007fac16d4c512 in AbstractBackendUpdater::progressingChanged(bool) () at /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#17 0x00007fabe21d3078 in PackageKitBackend::getUpdatesFinished(PackageKit::Transaction::Exit, unsigned int) () at /usr/lib/x86_64-linux-gnu/qt5/plugins/discover/packagekit-backend.so
#18 0x00007fac13ec86cf in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007fabe1f8fd2f in PackageKit::Transaction::finished(PackageKit::Transaction::Exit, unsigned int) () at /usr/lib/x86_64-linux-gnu/libpackagekitqt5.so.1
#20 0x00007fabe1f93f65 in  () at /usr/lib/x86_64-linux-gnu/libpackagekitqt5.so.1
#21 0x00007fabe1f923b5 in  () at /usr/lib/x86_64-linux-gnu/libpackagekitqt5.so.1
#22 0x00007fac13ec85b5 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007fabe1fa33bf in  () at /usr/lib/x86_64-linux-gnu/libpackagekitqt5.so.1
#24 0x00007fabe1fa5705 in  () at /usr/lib/x86_64-linux-gnu/libpackagekitqt5.so.1
#25 0x00007fac150b30f8 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#26 0x00007fac13ec9122 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007fac1616d82c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#28 0x00007fac161750f4 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#29 0x00007fac13e999a8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007fac13e9c11d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007fac13ef32c3 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007fac0dcd6287 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007fac0dcd64c0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007fac0dcd654c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007fac13ef28ef in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#36 0x00007fac13e979ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#37 0x00007fac13ea0a84 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#38 0x00005586ad05dfc8 in  ()
#39 0x00007fac134b1b97 in __libc_start_main (main=0x5586ad05d6f0, argc=3, argv=0x7fffffc3b458, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffc3b448) at ../csu/libc-start.c:310
#40 0x00005586ad05e24a in _start ()

Reported using DrKonqi