Application: krunner (5.12.4)

Qt Version: 5.10.1
Frameworks Version: 5.44.0
Operating System: Linux 4.15.0-2-amd64 x86_64
Distribution: Debian GNU/Linux testing (buster)

-- Information about the crash:
- What I was doing when the application crashed: entering app name. possibly more often crashed using the 'f' character at the beginning???

The crash can be reproduced sometimes.

-- Backtrace:
Application: krunner (krunner), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f416c143840 (LWP 1429))]

Thread 15 (Thread 0x7f4116ffd700 (LWP 15426)):
#0  0x00007f41659fc4ec in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f4116ff9658) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f41659fc4ec in __pthread_cond_wait_common (abstime=0x0, mutex=0x5652b4a51ad8, cond=0x7f4116ff9630) at pthread_cond_wait.c:502
#2  0x00007f41659fc4ec in __pthread_cond_wait (cond=0x7f4116ff9630, mutex=0x5652b4a51ad8) at pthread_cond_wait.c:655
#3  0x00007f4166ee5302 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#4  0x00007f4166ee6a1f in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#5  0x00007f4166ee6b9f in xcb_wait_for_reply64 () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#6  0x00007f4167144c38 in _XReply () at /usr/lib/x86_64-linux-gnu/libX11.so.6
#7  0x00007f414a3e405d in  () at /usr/lib/x86_64-linux-gnu/libGLX_nvidia.so.0
#8  0x00007f414a3ad055 in  () at /usr/lib/x86_64-linux-gnu/libGLX_nvidia.so.0
#9  0x00007f414940e7d1 in  () at /usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.390.25
#10 0x00007f414946fc2b in  () at /usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.390.25
#11 0x00007f414947c7dd in  () at /usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.390.25
#12 0x00007f41493c85b6 in  () at /usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.390.25
#13 0x00007f4149017406 in  () at /usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.390.25
#14 0x00007f41490926aa in  () at /usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.390.25
#15 0x00007f4149435706 in  () at /usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.390.25
#16 0x00007f414900a3e9 in  () at /usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.390.25
#17 0x00007f414900df9d in  () at /usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.390.25
#18 0x00007f4168c7ab7e in QOpenGLTextureGlyphCache::resizeTextureData(int, int) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#19 0x00007f4168be4c5a in QTextureGlyphCache::fillInPendingGlyphs() () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#20 0x00007f416b22ff56 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#21 0x00007f416b22cc49 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#22 0x00007f416b2e3ac8 in QQuickTextNode::addGlyphs(QPointF const&, QGlyphRun const&, QColor const&, QQuickText::TextStyle, QColor const&, QSGNode*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#23 0x00007f416b2e8bd4 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#24 0x00007f416b2e4a2a in QQuickTextNode::addTextLayout(QPointF const&, QTextLayout*, QColor const&, QQuickText::TextStyle, QColor const&, QColor const&, QColor const&, QColor const&, int, int, int, int) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#25 0x00007f416b2e3641 in QQuickText::updatePaintNode(QSGNode*, QQuickItem::UpdatePaintNodeData*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#26 0x00007f416b29b658 in QQuickWindowPrivate::updateDirtyNode(QQuickItem*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#27 0x00007f416b29bee3 in QQuickWindowPrivate::updateDirtyNodes() () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#28 0x00007f416b29d262 in QQuickWindowPrivate::syncSceneGraph() () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#29 0x00007f416b2414b3 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#30 0x00007f416b242fc4 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#31 0x00007f416b247848 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#32 0x00007f41681b5b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#33 0x00007f41659f65aa in start_thread (arg=0x7f4116ffd700) at pthread_create.c:463
#34 0x00007f4167abdcbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7f41177fe700 (LWP 15425)):
#0  0x00007f41659fc4ec in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5652b4f10c50) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f41659fc4ec in __pthread_cond_wait_common (abstime=0x0, mutex=0x5652b4f10c00, cond=0x5652b4f10c28) at pthread_cond_wait.c:502
#2  0x00007f41659fc4ec in __pthread_cond_wait (cond=0x5652b4f10c28, mutex=0x5652b4f10c00) at pthread_cond_wait.c:655
#3  0x00007f41681b6fbb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f414033d745 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f4140341818 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f414033c8fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f414033f6db in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f41681b5b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f41659f65aa in start_thread (arg=0x7f41177fe700) at pthread_create.c:463
#10 0x00007f4167abdcbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7f4117fff700 (LWP 15424)):
[KCrash Handler]
#6  0x00007f41683e0f80 in QVariant::QVariant(QVariant const&) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f413a230c8b in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/sqldrivers/libqsqlite.so
#8  0x00007f413a22e53e in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/sqldrivers/libqsqlite.so
#9  0x00007f41631be304 in QSqlQuery::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Sql.so.5
#10 0x00007f413a442ddc in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/krunner_bookmarksrunner.so
#11 0x00007f413a44514a in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/krunner_bookmarksrunner.so
#12 0x00007f413a44031d in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/krunner_bookmarksrunner.so
#13 0x00007f413a43df4d in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/krunner_bookmarksrunner.so
#14 0x00007f413a44785a in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/krunner_bookmarksrunner.so
#15 0x00007f4140561390 in Plasma::AbstractRunner::performMatch(Plasma::RunnerContext&) () at /usr/lib/x86_64-linux-gnu/libKF5Runner.so.5
#16 0x00007f4140340fd8 in ThreadWeaver::Executor::run(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#17 0x00007f414033fc40 in ThreadWeaver::Job::execute(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#18 0x00007f414033f79d in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#19 0x00007f41681b5b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f41659f65aa in start_thread (arg=0x7f4117fff700) at pthread_create.c:463
#21 0x00007f4167abdcbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f412c86f700 (LWP 15423)):
#0  0x00007f41659fc4ec in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5652b4f10c50) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f41659fc4ec in __pthread_cond_wait_common (abstime=0x0, mutex=0x5652b4f10c00, cond=0x5652b4f10c28) at pthread_cond_wait.c:502
#2  0x00007f41659fc4ec in __pthread_cond_wait (cond=0x5652b4f10c28, mutex=0x5652b4f10c00) at pthread_cond_wait.c:655
#3  0x00007f41681b6fbb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f414033d745 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f4140341818 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f414033c8fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f414033f6db in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f41681b5b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f41659f65aa in start_thread (arg=0x7f412c86f700) at pthread_create.c:463
#10 0x00007f4167abdcbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f412d070700 (LWP 15422)):
#0  0x00007f41659fc4ec in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5652b4f10c50) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f41659fc4ec in __pthread_cond_wait_common (abstime=0x0, mutex=0x5652b4f10c00, cond=0x5652b4f10c28) at pthread_cond_wait.c:502
#2  0x00007f41659fc4ec in __pthread_cond_wait (cond=0x5652b4f10c28, mutex=0x5652b4f10c00) at pthread_cond_wait.c:655
#3  0x00007f41681b6fbb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f414033d745 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f4140341818 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f414033c8fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f414033f6db in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f41681b5b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f41659f65aa in start_thread (arg=0x7f412d070700) at pthread_create.c:463
#10 0x00007f4167abdcbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f412d871700 (LWP 15421)):
#0  0x00007f41659fc4ec in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5652b4f10c50) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f41659fc4ec in __pthread_cond_wait_common (abstime=0x0, mutex=0x5652b4f10c00, cond=0x5652b4f10c28) at pthread_cond_wait.c:502
#2  0x00007f41659fc4ec in __pthread_cond_wait (cond=0x5652b4f10c28, mutex=0x5652b4f10c00) at pthread_cond_wait.c:655
#3  0x00007f41681b6fbb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f414033d745 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f4140341818 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f414033c8fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f414033f6db in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f41681b5b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f41659f65aa in start_thread (arg=0x7f412d871700) at pthread_create.c:463
#10 0x00007f4167abdcbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f412e072700 (LWP 15420)):
#0  0x00007f41659fc4ec in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5652b4f10c50) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f41659fc4ec in __pthread_cond_wait_common (abstime=0x0, mutex=0x5652b4f10c00, cond=0x5652b4f10c28) at pthread_cond_wait.c:502
#2  0x00007f41659fc4ec in __pthread_cond_wait (cond=0x5652b4f10c28, mutex=0x5652b4f10c00) at pthread_cond_wait.c:655
#3  0x00007f41681b6fbb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f414033d745 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f4140341818 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f414033c8fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f414033f6db in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f41681b5b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f41659f65aa in start_thread (arg=0x7f412e072700) at pthread_create.c:463
#10 0x00007f4167abdcbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f412e873700 (LWP 15419)):
#0  0x00007f41659fc4ec in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5652b4f10c50) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f41659fc4ec in __pthread_cond_wait_common (abstime=0x0, mutex=0x5652b4f10c00, cond=0x5652b4f10c28) at pthread_cond_wait.c:502
#2  0x00007f41659fc4ec in __pthread_cond_wait (cond=0x5652b4f10c28, mutex=0x5652b4f10c00) at pthread_cond_wait.c:655
#3  0x00007f41681b6fbb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f414033d745 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f4140341818 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f414033c8fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f414033f6db in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f41681b5b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f41659f65aa in start_thread (arg=0x7f412e873700) at pthread_create.c:463
#10 0x00007f4167abdcbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f412f074700 (LWP 15418)):
#0  0x00007f41659fc4ec in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5652b4f10c50) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f41659fc4ec in __pthread_cond_wait_common (abstime=0x0, mutex=0x5652b4f10c00, cond=0x5652b4f10c28) at pthread_cond_wait.c:502
#2  0x00007f41659fc4ec in __pthread_cond_wait (cond=0x5652b4f10c28, mutex=0x5652b4f10c00) at pthread_cond_wait.c:655
#3  0x00007f41681b6fbb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f414033d745 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f4140341818 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f414033c8fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f414033f6db in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f41681b5b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f41659f65aa in start_thread (arg=0x7f412f074700) at pthread_create.c:463
#10 0x00007f4167abdcbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f41372a2700 (LWP 15414)):
#0  0x00007f4167ab35d9 in __GI___poll (fds=0x5652b523d220, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f4163442439 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f41634427d2 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f41390e6e26 in  () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f4163469e05 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f41659f65aa in start_thread (arg=0x7f41372a2700) at pthread_create.c:463
#6  0x00007f4167abdcbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f4137aa3700 (LWP 15413)):
#0  0x00007f4167aaf094 in __GI___libc_read (fd=25, buf=0x7f4137aa2ca0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f4163486960 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4163441f27 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f41634423e0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f416344254c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f4163442591 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f4163469e05 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f41659f65aa in start_thread (arg=0x7f4137aa3700) at pthread_create.c:463
#8  0x00007f4167abdcbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f414334d700 (LWP 1454)):
#0  0x00007f4167aaf094 in __GI___libc_read (fd=18, buf=0x7f414334cb30, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f4163486960 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4163441f27 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f41634423e0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f416344254c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f41683f71bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f416839ab6a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f41681b07ea in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f416ad71885 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007f41681b5b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f41659f65aa in start_thread (arg=0x7f414334d700) at pthread_create.c:463
#11 0x00007f4167abdcbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f414ae63700 (LWP 1446)):
#0  0x00007f4167ab35d9 in __GI___poll (fds=0x7f4144009cb0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f4163442439 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f416344254c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f41683f71bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f416839ab6a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f41681b07ea in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4169ce5df5 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f41681b5b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f41659f65aa in start_thread (arg=0x7f414ae63700) at pthread_create.c:463
#9  0x00007f4167abdcbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f41565de700 (LWP 1433)):
#0  0x00007f4167ab35d9 in __GI___poll (fds=0x7f41565ddc68, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f4166ee50f7 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f4166ee6d1a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f415874eb19 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f41681b5b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f41659f65aa in start_thread (arg=0x7f41565de700) at pthread_create.c:463
#6  0x00007f4167abdcbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f416c143840 (LWP 1429)):
#0  0x00007f41659fc4ec in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5652b53b5dd0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f41659fc4ec in __pthread_cond_wait_common (abstime=0x0, mutex=0x5652b53b5d80, cond=0x5652b53b5da8) at pthread_cond_wait.c:502
#2  0x00007f41659fc4ec in __pthread_cond_wait (cond=0x5652b53b5da8, mutex=0x5652b53b5d80) at pthread_cond_wait.c:655
#3  0x00007f41681b6fbb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f416b243bfd in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f416b2449d2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f416b2a7296 in QQuickWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f416bd5e063 in PlasmaQuick::Dialog::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libKF5PlasmaQuick.so.5
#8  0x00005652b402416f in  ()
#9  0x00007f416938d6cc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#10 0x00007f4169394e84 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007f416839c938 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f4168914291 in QWindowPrivate::deliverUpdateRequest() () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#13 0x00007f41689147b9 in QWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#14 0x00007f416b2a7235 in QQuickWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#15 0x00007f416bd5e063 in PlasmaQuick::Dialog::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libKF5PlasmaQuick.so.5
#16 0x00005652b402416f in  ()
#17 0x00007f416938d6cc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007f4169394e84 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007f416839c938 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f41683f663e in QTimerInfoList::activateTimers() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007f41683f6e01 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007f4163442287 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f41634424c0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f416344254c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007f41683f719f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007f41587d3201 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#27 0x00007f416839ab6a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007f41683a3ed4 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00005652b4021881 in  ()
#30 0x00007f41679e8a87 in __libc_start_main (main=0x5652b4021460, argc=1, argv=0x7fff5c7efa38, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff5c7efa28) at ../csu/libc-start.c:310
#31 0x00005652b402190a in _start ()

Reported using DrKonqi