Application: plasmashell (5.16.5)

Qt Version: 5.12.4
Frameworks Version: 5.62.0
Operating System: Linux 5.3.0-26-generic x86_64
Distribution: Ubuntu 19.10

-- Information about the crash:
- What I was doing when the application crashed: Logging in to the wifi network iwlwifi driver
 108.775479] wlo1: RX AssocResp from 88:5a:06:f7:34:d3 (capab=0x431 status=0 aid=4)
[  108.777522] wlo1: associated
[  108.788374] wlo1: deauthenticating from 88:5a:06:f7:34:d3 by local choice (Reason: 1=UNSPECIFIED)

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55c0e1b63d60) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
[Current thread is 1 (Thread 0x7f8b4270e880 (LWP 4684))]

Thread 12 (Thread 0x7f8b125ed700 (LWP 4939)):
[KCrash Handler]
#6  0x00007f8b29842178 in  () at /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kquickcontrolsaddons/libkquickcontrolsaddonsplugin.so
#7  0x00007f8b4619c5c8 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f8b47e1dba4 in QQuickWindowPrivate::renderSceneGraph(QSize const&) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007f8b47dc4c68 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007f8b47dc89d8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007f8b45fa9cc2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f8b4542c669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#13 0x00007f8b45c2e323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f8b119ec700 (LWP 4915)):
#0  0x00007f8b454332c6 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55c0e3886000) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  0x00007f8b454332c6 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55c0e3885fb0, cond=0x55c0e3885fd8) at pthread_cond_wait.c:508
#2  0x00007f8b454332c6 in __pthread_cond_wait (cond=0x55c0e3885fd8, mutex=0x55c0e3885fb0) at pthread_cond_wait.c:638
#3  0x00007f8b45fafdef in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f8b45fafee1 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8b47dc87b9 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f8b47dc8a1a in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f8b45fa9cc2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f8b4542c669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#9  0x00007f8b45c2e323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f8b13fff700 (LWP 4882)):
#0  0x00007f8b454332c6 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f8b0805ac74) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  0x00007f8b454332c6 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55c0de8a5428, cond=0x7f8b0805ac48) at pthread_cond_wait.c:508
#2  0x00007f8b454332c6 in __pthread_cond_wait (cond=0x7f8b0805ac48, mutex=0x55c0de8a5428) at pthread_cond_wait.c:638
#3  0x00007f8b481bfb22 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#4  0x00007f8b481c162a in xcb_wait_for_special_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#5  0x00007f8b39d5531e in glPrimitiveBoundingBox () at /usr/lib/x86_64-linux-gnu/libGLX_mesa.so.0
#6  0x00007f8b39d55488 in glPrimitiveBoundingBox () at /usr/lib/x86_64-linux-gnu/libGLX_mesa.so.0
#7  0x00007f8b39d5669e in glPrimitiveBoundingBox () at /usr/lib/x86_64-linux-gnu/libGLX_mesa.so.0
#8  0x00007f8b39d575ec in glPrimitiveBoundingBox () at /usr/lib/x86_64-linux-gnu/libGLX_mesa.so.0
#9  0x00007f8b38e82eec in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#10 0x00007f8b38e83679 in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#11 0x00007f8b38e7f15b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#12 0x00007f8b47d85056 in QSGBatchRenderer::Renderer::renderBatches() () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#13 0x00007f8b47d8a8e4 in QSGBatchRenderer::Renderer::render() () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007f8b47d7b420 in QSGRenderer::renderScene(QSGBindable const&) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#15 0x00007f8b47d7b8e3 in QSGRenderer::renderScene(unsigned int) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#16 0x00007f8b47db8a34 in QSGDefaultRenderContext::renderNextFrame(QSGRenderer*, unsigned int) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#17 0x00007f8b47e1dcf0 in QQuickWindowPrivate::renderSceneGraph(QSize const&) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#18 0x00007f8b47dc4c68 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#19 0x00007f8b47dc89d8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#20 0x00007f8b45fa9cc2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007f8b4542c669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#22 0x00007f8b45c2e323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f8b21946700 (LWP 4872)):
#0  0x00007f8b4499ebf8 in g_mutex_unlock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f8b449529f9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8b44952b73 in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8b461c86c3 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f8b4616f63b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8b45fa8a75 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f8b45fa9cc2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f8b4542c669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#8  0x00007f8b45c2e323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f8b22147700 (LWP 4871)):
#0  0x00007f8b45c1d2ac in __GI___libc_read (nbytes=16, buf=0x7f8b22146ad0, fd=29) at ../sysdeps/unix/sysv/linux/read.c:26
#1  0x00007f8b45c1d2ac in __GI___libc_read (fd=29, buf=0x7f8b22146ad0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007f8b4499a69f in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8b4495258e in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f8b449529e2 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f8b44952b73 in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f8b461c86c3 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f8b4616f63b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f8b45fa8a75 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f8b2293301c in KCupsConnection::run() () at /usr/lib/x86_64-linux-gnu/libkcupslib.so
#10 0x00007f8b45fa9cc2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f8b4542c669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#12 0x00007f8b45c2e323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f8b28d8f700 (LWP 4855)):
#0  0x00007f8b454332c6 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55c0df152084) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  0x00007f8b454332c6 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55c0df152030, cond=0x55c0df152058) at pthread_cond_wait.c:508
#2  0x00007f8b454332c6 in __pthread_cond_wait (cond=0x55c0df152058, mutex=0x55c0df152030) at pthread_cond_wait.c:638
#3  0x00007f8b45fafdef in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f8b45fafee1 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8b47dc87b9 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f8b47dc8a1a in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f8b45fa9cc2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f8b4542c669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#9  0x00007f8b45c2e323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f8b295a7700 (LWP 4852)):
#0  0x00007f8b45c1d2ac in __GI___libc_read (nbytes=16, buf=0x7f8b295a6ad0, fd=16) at ../sysdeps/unix/sysv/linux/read.c:26
#1  0x00007f8b45c1d2ac in __GI___libc_read (fd=16, buf=0x7f8b295a6ad0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007f8b4499a69f in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8b4495258e in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f8b449529e2 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f8b44952b73 in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f8b461c86c3 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f8b4616f63b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f8b45fa8a75 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f8b47d408aa in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007f8b45fa9cc2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f8b4542c669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#12 0x00007f8b45c2e323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f8b38c03700 (LWP 4851)):
#0  0x00007f8b454332c6 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55c0de949dfc) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  0x00007f8b454332c6 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55c0de949da8, cond=0x55c0de949dd0) at pthread_cond_wait.c:508
#2  0x00007f8b454332c6 in __pthread_cond_wait (cond=0x55c0de949dd0, mutex=0x55c0de949da8) at pthread_cond_wait.c:638
#3  0x00007f8b3928397b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f8b3928359b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f8b4542c669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#6  0x00007f8b45c2e323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f8b3adee700 (LWP 4835)):
#0  0x00007f8b45c21c2f in __GI___poll (fds=0x7f8b2c0025e0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f8b44952a3e in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8b44952b73 in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8b461c86c3 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f8b4616f63b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8b45fa8a75 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f8b47a6b319 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f8b45fa9cc2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f8b4542c669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#9  0x00007f8b45c2e323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f8b3bfff700 (LWP 4793)):
#0  0x00007f8b4499ebf8 in g_mutex_unlock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f8b44952469 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8b449529e2 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8b44952b73 in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f8b461c86c3 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8b4616f63b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f8b45fa8a75 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f8b46a8defa in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#8  0x00007f8b45fa9cc2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f8b4542c669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#10 0x00007f8b45c2e323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f8b413a2700 (LWP 4701)):
#0  0x00007f8b45c21c2f in __GI___poll (fds=0x7f8b413a1c28, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f8b481bf917 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f8b481c153a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f8b41b4e288 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f8b45fa9cc2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8b4542c669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#6  0x00007f8b45c2e323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f8b4270e880 (LWP 4684)):
#0  0x00007f8b454332c6 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55c0e1b63d60) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  0x00007f8b454332c6 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55c0e1b63d10, cond=0x55c0e1b63d38) at pthread_cond_wait.c:508
#2  0x00007f8b454332c6 in __pthread_cond_wait (cond=0x55c0e1b63d38, mutex=0x55c0e1b63d10) at pthread_cond_wait.c:638
#3  0x00007f8b45fafdef in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f8b45fafee1 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8b47dc6d87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f8b47dc7952 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f8b47e29726 in QQuickWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007f8b48596ba3 in PlasmaQuick::Dialog::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libKF5PlasmaQuick.so.5
#9  0x00007f8b46d0ca86 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#10 0x00007f8b46d15e00 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007f8b46170a9a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f8b4654bae4 in QPlatformWindow::windowEvent(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#13 0x00007f8b46d15b7b in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#14 0x00007f8b46170a9a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f8b461c7a00 in QTimerInfoList::activateTimers() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007f8b461c8324 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f8b4495284d in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007f8b44952ad0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007f8b44952b73 in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f8b461c86a5 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007f8b4616f63b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007f8b461773a6 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x000055c0de3e1774 in  ()
#24 0x00007f8b45b331e3 in __libc_start_main (main=0x55c0de3e0c20, argc=1, argv=0x7ffc5ee74b38, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc5ee74b28) at ../csu/libc-start.c:308
#25 0x000055c0de3e1bfe in _start ()
[Inferior 1 (process 4684) detached]

Reported using DrKonqi