Bug 438445

Application: plasma-discover (5.12.8)

Qt Version: 5.9.5
Frameworks Version: 5.44.0
Operating System: Linux 4.15.0-144-generic x86_64
Distribution: Ubuntu 18.04.5 LTS

-- Information about the crash:
- What I was doing when the application crashed: tyring to apply latest  distro updates, only one update listed on the taskbar notification icon, Software Center window opens up but immediately crtashes.

The crash can be reproduced every time.

-- Backtrace:
Application: Discover (plasma-discover), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f56f13c5800 (LWP 28057))]

Thread 10 (Thread 0x7f569adef700 (LWP 28071)):
#0  0x00007f56ec95b639 in syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f56ed06b775 in QBasicMutex::lockInternal() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f56ea89df96 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#3  0x00007f56ea89e835 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#4  0x00007f56ea87a8cc in QSslSocket::startClientEncryption() () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#5  0x00007f56ea87b578 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#6  0x00007f56ea883379 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#7  0x00007f56ed281555 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f56ea84df09 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#9  0x00007f56ea850e78 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#10 0x00007f56ea8617ed in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#11 0x00007f56ef54c83c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#12 0x00007f56ef554104 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#13 0x00007f56ed2528d8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f56ed2ac4ed in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f56e70d4537 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#16 0x00007f56e70d4770 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#17 0x00007f56e70d47fc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007f56ed2ab8ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f56ed25090a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f56ed06f23a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007f56ed07417d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007f56e92276db in start_thread (arg=0x7f569adef700) at pthread_create.c:463
#23 0x00007f56ec96171f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f56aa18f700 (LWP 28066)):
#0  0x00007f56e922dad3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f56a4029fd0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f56e922dad3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f56a4029f80, cond=0x7f56a4029fa8) at pthread_cond_wait.c:502
#2  0x00007f56e922dad3 in __pthread_cond_wait (cond=0x7f56a4029fa8, mutex=0x7f56a4029f80) at pthread_cond_wait.c:655
#3  0x00007f56ed0755ab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f56ed06dc1b in QSemaphore::acquire(int) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f56ed281868 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f56ea8a5df2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#7  0x00007f56ea8a6d4c in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#8  0x00007f56ed281555 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f56ea8a4eb2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#10 0x00007f56ea80623f in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#11 0x00007f56ea8076cc in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#12 0x00007f56ed281555 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f56ea879dd2 in QSslSocket::preSharedKeyAuthenticationRequired(QSslPreSharedKeyAuthenticator*) () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#14 0x00007f56ea89dcdc in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#15 0x00007f56aa1d51d6 in  () at /usr/lib/x86_64-linux-gnu/libssl.so.1.1
#16 0x00007f56aa1d336b in  () at /usr/lib/x86_64-linux-gnu/libssl.so.1.1
#17 0x00007f56aa1dd34e in  () at /usr/lib/x86_64-linux-gnu/libssl.so.1.1
#18 0x00007f56aa1dc247 in  () at /usr/lib/x86_64-linux-gnu/libssl.so.1.1
#19 0x00007f56aa1c84e4 in SSL_do_handshake () at /usr/lib/x86_64-linux-gnu/libssl.so.1.1
#20 0x00007f56ea89e10d in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#21 0x00007f56ea89e835 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#22 0x00007f56ea87a8cc in QSslSocket::startClientEncryption() () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#23 0x00007f56ea87b578 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#24 0x00007f56ea883379 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#25 0x00007f56ed281555 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007f56ea84df09 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#27 0x00007f56ea850e78 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#28 0x00007f56ea8617ed in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#29 0x00007f56ef54c83c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#30 0x00007f56ef554104 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#31 0x00007f56ed2528d8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007f56ed2ac4ed in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#33 0x00007f56e70d4537 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007f56e70d4770 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007f56e70d47fc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007f56ed2ab8ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#37 0x00007f56ed25090a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#38 0x00007f56ed06f23a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#39 0x00007f56ed07417d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#40 0x00007f56e92276db in start_thread (arg=0x7f56aa18f700) at pthread_create.c:463
#41 0x00007f56ec96171f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f56b8b95700 (LWP 28064)):
#0  0x00007f56e70d15c0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f56e70d3b83 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f56e70d461b in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f56e70d47fc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f56ed2ab8ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f56ed25090a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f56ed06f23a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f56ed07417d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f56e92276db in start_thread (arg=0x7f56b8b95700) at pthread_create.c:463
#9  0x00007f56ec96171f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f56b9396700 (LWP 28063)):
#0  0x00007f56ec954cb9 in __GI___poll (fds=0x5614e410d870, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f56e70d46e9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f56e70d4a82 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f56bb1f72d6 in  () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f56e70fc2a5 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f56e92276db in start_thread (arg=0x7f56b9396700) at pthread_create.c:463
#6  0x00007f56ec96171f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f56b9b97700 (LWP 28062)):
#0  0x00007f56ec954cb9 in __GI___poll (fds=0x5614e40fb4b0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f56e70d46e9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f56e70d47fc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f56e70d4841 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f56e70fc2a5 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f56e92276db in start_thread (arg=0x7f56b9b97700) at pthread_create.c:463
#6  0x00007f56ec96171f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f56c54d7700 (LWP 28061)):
#0  0x00007f56ec954cb9 in __GI___poll (fds=0x7f56c0004db0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f56e70d46e9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f56e70d47fc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f56ed2ab8ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f56ed25090a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f56ed06f23a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f56f04772a6 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f56ed07417d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f56e92276db in start_thread (arg=0x7f56c54d7700) at pthread_create.c:463
#9  0x00007f56ec96171f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f56cffff700 (LWP 28060)):
#0  0x00007f56ec954cb9 in __GI___poll (fds=0x7f56c8004a00, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f56e70d46e9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f56e70d47fc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f56ed2ab8ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f56ed25090a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f56ed06f23a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f56edc906f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f56ed07417d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f56e92276db in start_thread (arg=0x7f56cffff700) at pthread_create.c:463
#9  0x00007f56ec96171f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f56d55ef700 (LWP 28059)):
#0  0x00007f56ec954cb9 in __GI___poll (fds=0x7f56d0004db0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f56e70d46e9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f56e70d47fc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f56ed2ab8ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f56ed25090a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f56ed06f23a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f56ee475d45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f56ed07417d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f56e92276db in start_thread (arg=0x7f56d55ef700) at pthread_create.c:463
#9  0x00007f56ec96171f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f56ded67700 (LWP 28058)):
#0  0x00007f56ec954cb9 in __GI___poll (fds=0x7f56ded66ca8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f56e6e6b747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f56e6e6d36a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f56e1b525e9 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f56ed07417d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f56e92276db in start_thread (arg=0x7f56ded67700) at pthread_create.c:463
#6  0x00007f56ec96171f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f56f13c5800 (LWP 28057)):
[KCrash Handler]
#6  0x00007f56ec87efb7 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#7  0x00007f56ec880921 in __GI_abort () at abort.c:79
#8  0x00007f56ed05efb7 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f56f04da2a7 in QSGRenderLoop::handleContextCreationFailure(QQuickWindow*, bool) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007f56f04db275 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007f56f04dbe9a in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#12 0x00007f56eed953d5 in QWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#13 0x00007f56f05506c5 in QQuickWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007f56ef54c83c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007f56ef554104 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007f56ed2528d8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f56eed8a49f in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#18 0x00007f56eed8b0dd in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#19 0x00007f56eed622eb in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#20 0x00007f56e1bb7260 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#21 0x00007f56e70d4537 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f56e70d4770 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f56e70d47fc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f56ed2ab88f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f56ed25090a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007f56ed2599b4 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00005614e338b148 in  ()
#28 0x00007f56ec861bf7 in __libc_start_main (main=0x5614e338a870, argc=3, argv=0x7ffe930412b8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe930412a8) at ../csu/libc-start.c:310
#29 0x00005614e338b3ca in _start ()

Reported using DrKonqi