Application: plasma-discover (5.12.8)

Qt Version: 5.9.5
Frameworks Version: 5.44.0
Operating System: Linux 5.3.0-53-generic x86_64
Distribution: Ubuntu 18.04.4 LTS

-- Information about the crash:
- What I was doing when the application crashed:
Started Discover from Menu.
It crashes almost instantly.
I am on KUbuntu 18.04.

The crash can be reproduced every time.

-- Backtrace:
Application: Discover (plasma-discover), signal: Illegal instruction
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7ff0c44c6800 (LWP 31802))]

Thread 11 (Thread 0x7ff06f7fe700 (LWP 31818)):
#0  0x00007ff0bfa90bf9 in __GI___poll (fds=0x7ff060017190, nfds=1, timeout=89643) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ff0ba2815c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff0ba2816dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff0c03d98ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ff0c037e90a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ff0c019d23a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ff0c01a217d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007ff0bc3b06db in start_thread (arg=0x7ff06f7fe700) at pthread_create.c:463
#8  0x00007ff0bfa9d88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7ff0854fe700 (LWP 31815)):
#0  0x00007ff0bc3b69f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff0701e2170) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff0bc3b69f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff0701e2120, cond=0x7ff0701e2148) at pthread_cond_wait.c:502
#2  0x00007ff0bc3b69f3 in __pthread_cond_wait (cond=0x7ff0701e2148, mutex=0x7ff0701e2120) at pthread_cond_wait.c:655
#3  0x00007ff0c01a35ab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ff0c019bc1b in QSemaphore::acquire(int) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ff0c03af868 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ff0bd97be9b in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#7  0x00007ff0bda11d1d in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#8  0x00007ff0c03af555 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007ff0bd971fc1 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#10 0x00007ff0bd972775 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#11 0x00007ff0c03af555 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007ff0bda0baaf in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#13 0x00007ff0bda09710 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#14 0x00007ff0bda09aba in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#15 0x00007ff0bd9ee401 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#16 0x00007ff0c03af555 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007ff0bd9b8843 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#18 0x00007ff0bd9b88f4 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#19 0x00007ff0bd9cc7a1 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#20 0x00007ff0c265483c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00007ff0c265c104 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#22 0x00007ff0c03808d8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007ff0c03da4ed in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007ff0ba281417 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007ff0ba281650 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007ff0ba2816dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007ff0c03d988f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007ff0c037e90a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007ff0c019d23a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007ff0c01a217d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007ff0bc3b06db in start_thread (arg=0x7ff0854fe700) at pthread_create.c:463
#32 0x00007ff0bfa9d88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7ff0873b1700 (LWP 31812)):
#0  0x00007ff0bfa90bf9 in __GI___poll (fds=0x7ff07c003600, nfds=1, timeout=9643) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ff0ba2815c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff0ba2816dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff0c03d98ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ff0c037e90a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ff0c019d23a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ff0c01a217d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007ff0bc3b06db in start_thread (arg=0x7ff0873b1700) at pthread_create.c:463
#8  0x00007ff0bfa9d88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7ff087bb2700 (LWP 31811)):
#0  0x00007ff0bfa8c0b4 in __GI___libc_read (fd=16, buf=0x7ff087bb1cd0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007ff0ba2c62b0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff0ba2810b7 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff0ba281570 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ff0ba281962 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ff0899f1276 in  () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#6  0x00007ff0ba2a9175 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007ff0bc3b06db in start_thread (arg=0x7ff087bb2700) at pthread_create.c:463
#8  0x00007ff0bfa9d88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7ff0883b3700 (LWP 31810)):
#0  0x00007ff0bfa90bf9 in __GI___poll (fds=0x555c82c479e0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ff0ba2815c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff0ba2816dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff0ba281721 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ff0ba2a9175 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ff0bc3b06db in start_thread (arg=0x7ff0883b3700) at pthread_create.c:463
#6  0x00007ff0bfa9d88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7ff09349e700 (LWP 31809)):
#0  0x00007ff0bfa90c08 in __GI___poll (fds=0x7ff08c004db0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ff0ba2815c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff0ba2816dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff0c03d98ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ff0c037e90a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ff0c019d23a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ff0c357d2a6 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007ff0c01a217d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007ff0bc3b06db in start_thread (arg=0x7ff09349e700) at pthread_create.c:463
#9  0x00007ff0bfa9d88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7ff0998e9700 (LWP 31807)):
#0  0x00007ff0bc3b69f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x555c8173cd58) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff0bc3b69f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x555c8173cd08, cond=0x555c8173cd30) at pthread_cond_wait.c:502
#2  0x00007ff0bc3b69f3 in __pthread_cond_wait (cond=0x555c8173cd30, mutex=0x555c8173cd08) at pthread_cond_wait.c:655
#3  0x00007ff09ac2becb in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007ff09ac2bac7 in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007ff0bc3b06db in start_thread (arg=0x7ff0998e9700) at pthread_create.c:463
#6  0x00007ff0bfa9d88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7ff0a35ef700 (LWP 31806)):
#0  0x00007ff0ba2c7638 in g_mutex_lock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007ff0ba280995 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff0ba2814fb in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff0ba2816dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ff0c03d98ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ff0c037e90a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ff0c019d23a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007ff0c0db36f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007ff0c01a217d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007ff0bc3b06db in start_thread (arg=0x7ff0a35ef700) at pthread_create.c:463
#10 0x00007ff0bfa9d88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7ff0a8b5a700 (LWP 31805)):
#0  0x00007ff0ba27e4f0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007ff0ba280ef2 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff0ba281570 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff0ba2816dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ff0c03d98ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ff0c037e90a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ff0c019d23a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007ff0c158ed45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#8  0x00007ff0c01a217d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007ff0bc3b06db in start_thread (arg=0x7ff0a8b5a700) at pthread_create.c:463
#10 0x00007ff0bfa9d88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7ff0b1fae700 (LWP 31804)):
#0  0x00007ff0bfa90bf9 in __GI___poll (fds=0x7ff0b1fadca8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ff0ba018747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007ff0ba01a36a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007ff0b4d5b5e9 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007ff0c01a217d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ff0bc3b06db in start_thread (arg=0x7ff0b1fae700) at pthread_create.c:463
#6  0x00007ff0bfa9d88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7ff0c44c6800 (LWP 31802)):
[KCrash Handler]
#6  0x00007ff0c046e5e0 in QArrayData::shared_null () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007ff0c3200883 in Category::blacklistPluginsInVector(QSet<QString> const&, QVector<Category*>&) () at /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#8  0x00007ff0c320075d in Category::blacklistPlugins(QSet<QString> const&) () at /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#9  0x00007ff0c32008ca in Category::blacklistPluginsInVector(QSet<QString> const&, QVector<Category*>&) () at /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#10 0x00007ff0c3203f21 in CategoryModel::blacklistPlugin(QString const&) () at /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#11 0x00007ff0c32136a4 in ResourcesModel::callerFetchingChanged() () at /usr/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#12 0x00007ff0c03af66f in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007ff0862ffa43 in KNSBackend::setFetching(bool) () at /usr/lib/x86_64-linux-gnu/qt5/plugins/discover/kns-backend.so
#14 0x00007ff0862ffbee in KNSBackend::markInvalid(QString const&) () at /usr/lib/x86_64-linux-gnu/qt5/plugins/discover/kns-backend.so
#15 0x00007ff0862fffbe in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/discover/kns-backend.so
#16 0x00007ff0c03af66f in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007ff0860d7c75 in KNSCore::Engine::signalError(QString const&) () at /usr/lib/x86_64-linux-gnu/libKF5NewStuffCore.so.5
#18 0x00007ff0c03af66f in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007ff0860d84b5 in KNSCore::Provider::signalError(QString const&) const () at /usr/lib/x86_64-linux-gnu/libKF5NewStuffCore.so.5
#20 0x00007ff0860ce696 in  () at /usr/lib/x86_64-linux-gnu/libKF5NewStuffCore.so.5
#21 0x00007ff0c03af66f in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007ff0beb2783f in Attica::BaseJob::finished(Attica::BaseJob*) () at /usr/lib/x86_64-linux-gnu/libKF5Attica.so.5
#23 0x00007ff0beadbd5b in Attica::BaseJob::dataFinished() () at /usr/lib/x86_64-linux-gnu/libKF5Attica.so.5
#24 0x00007ff0beb27afa in  () at /usr/lib/x86_64-linux-gnu/libKF5Attica.so.5
#25 0x00007ff0c03af555 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007ff0bd98275f in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#27 0x00007ff0bda12d49 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#28 0x00007ff0c03b00c2 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007ff0c265483c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#30 0x00007ff0c265c104 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#31 0x00007ff0c03808d8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007ff0c038304d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#33 0x00007ff0c03da263 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#34 0x00007ff0ba281417 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007ff0ba281650 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007ff0ba2816dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007ff0c03d988f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#38 0x00007ff0c037e90a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#39 0x00007ff0c03879b4 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#40 0x0000555c7fb89148 in  ()
#41 0x00007ff0bf99db97 in __libc_start_main (main=0x555c7fb88870, argc=1, argv=0x7ffc89c48668, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc89c48658) at ../csu/libc-start.c:310
#42 0x0000555c7fb893ca in _start ()

Possible duplicates by query: bug 420836, bug 420804.

Reported using DrKonqi