Application: plasmashell (5.12.1)

Qt Version: 5.10.1
Frameworks Version: 5.43.0
Operating System: Linux 4.15.3-1-ARCH x86_64
Distribution (Platform): Archlinux Packages

-- Information about the crash:
It happens since the update to Qt 5.10.1.
Every time I search an application or a document through the Plasma kickoff menu or through Alt+f2, Plasma crashes.

Most of the time, the screen just turns black and there's nothing I can do except switching to a TTY.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f47c281c800 (LWP 607))]

Thread 25 (Thread 0x7f46a89df700 (LWP 966)):
#0  0x00007f47bb57c3bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f47bc3c302c in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f46da9d742f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007f46da9dc479 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007f46da9d6924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007f46da9dc4d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007f46da9d6924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007f46da9d9c83 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007f47bc3c1b4d in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f47bb57608c in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f47bbcc9e7f in clone () at /usr/lib/libc.so.6

Thread 24 (Thread 0x7f46a91e0700 (LWP 965)):
#0  0x00007f47bb57c3bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f47bc3c302c in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f46da9d742f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007f46da9dc479 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007f46da9d6924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007f46da9dc4d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007f46da9d6924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007f46da9d9c83 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007f47bc3c1b4d in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f47bb57608c in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f47bbcc9e7f in clone () at /usr/lib/libc.so.6

Thread 23 (Thread 0x7f46a99e1700 (LWP 964)):
#0  0x00007f47bb57c3bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f47bc3c302c in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f46da9d742f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007f46da9dc479 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007f46da9d6924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007f46da9dc4d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007f46da9d6924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007f46da9d9c83 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007f47bc3c1b4d in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f47bb57608c in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f47bbcc9e7f in clone () at /usr/lib/libc.so.6

Thread 22 (Thread 0x7f46aa1e2700 (LWP 963)):
#0  0x00007f47bb57c3bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f47bc3c302c in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f46da9d742f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007f46da9dc479 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007f46da9d6924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007f46da9dc4d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007f46da9d6924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007f46da9d9c83 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007f47bc3c1b4d in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f47bb57608c in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f47bbcc9e7f in clone () at /usr/lib/libc.so.6

Thread 21 (Thread 0x7f46aa9e3700 (LWP 962)):
#0  0x00007f47bb57c3bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f47bc3c302c in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f46da9d742f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007f46da9dc479 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007f46da9d6924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007f46da9dc4d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007f46da9d6924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007f46da9d9c83 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007f47bc3c1b4d in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f47bb57608c in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f47bbcc9e7f in clone () at /usr/lib/libc.so.6

Thread 20 (Thread 0x7f46ab1e4700 (LWP 961)):
#0  0x00007f47bb57c3bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f47bc3c302c in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f46da9d742f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007f46da9dc479 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007f46da9d6924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007f46da9dc4d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007f46da9d6924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007f46da9d9c83 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007f47bc3c1b4d in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f47bb57608c in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f47bbcc9e7f in clone () at /usr/lib/libc.so.6

Thread 19 (Thread 0x7f46a31e4700 (LWP 960)):
[KCrash Handler]
#5  0x00007f47bc5f4a60 in QVariant::QVariant(QVariant const&) () at /usr/lib/libQt5Core.so.5
#6  0x00007f46bf45b2cc in  () at /usr/lib/qt/plugins/sqldrivers/libqsqlite.so
#7  0x00007f46bf458ae6 in  () at /usr/lib/qt/plugins/sqldrivers/libqsqlite.so
#8  0x00007f47ba373938 in QSqlQuery::exec() () at /usr/lib/libQt5Sql.so.5
#9  0x00007f46be6be761 in  () at /usr/lib/qt/plugins/krunner_bookmarksrunner.so
#10 0x00007f46be6bef0a in  () at /usr/lib/qt/plugins/krunner_bookmarksrunner.so
#11 0x00007f46be6b9972 in  () at /usr/lib/qt/plugins/krunner_bookmarksrunner.so
#12 0x00007f46be6b71b5 in  () at /usr/lib/qt/plugins/krunner_bookmarksrunner.so
#13 0x00007f46be6c2064 in  () at /usr/lib/qt/plugins/krunner_bookmarksrunner.so
#14 0x00007f46db4d57f0 in Plasma::AbstractRunner::performMatch(Plasma::RunnerContext&) () at /usr/lib/libKF5Runner.so.5
#15 0x00007f46da9db618 in ThreadWeaver::Executor::run(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) () at /usr/lib/libKF5ThreadWeaver.so.5
#16 0x00007f46da9da610 in ThreadWeaver::Job::execute(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) () at /usr/lib/libKF5ThreadWeaver.so.5
#17 0x00007f46da9d9d45 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#18 0x00007f47bc3c1b4d in  () at /usr/lib/libQt5Core.so.5
#19 0x00007f47bb57608c in start_thread () at /usr/lib/libpthread.so.0
#20 0x00007f47bbcc9e7f in clone () at /usr/lib/libc.so.6

Thread 18 (Thread 0x7f46ab9e5700 (LWP 959)):
#0  0x00007f47bb57c3bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f47bc3c302c in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f46da9d742f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007f46da9dc479 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007f46da9d6924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007f46da9dc4d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007f46da9d6924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007f46da9dc4d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007f46da9d6924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007f46da9dc4d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007f46da9d6924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#11 0x00007f46da9dc4d2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#12 0x00007f46da9d6924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#13 0x00007f46da9d9c83 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#14 0x00007f47bc3c1b4d in  () at /usr/lib/libQt5Core.so.5
#15 0x00007f47bb57608c in start_thread () at /usr/lib/libpthread.so.0
#16 0x00007f47bbcc9e7f in clone () at /usr/lib/libc.so.6

Thread 17 (Thread 0x7f46cbcb2700 (LWP 780)):
#0  0x00007f47bc60abfc in  () at /usr/lib/libQt5Core.so.5
#1  0x00007f47bc60939a in QTimerInfoList::updateCurrentTime() () at /usr/lib/libQt5Core.so.5
#2  0x00007f47bc609976 in QTimerInfoList::timerWait(timespec&) () at /usr/lib/libQt5Core.so.5
#3  0x00007f47bc60b05f in  () at /usr/lib/libQt5Core.so.5
#4  0x00007f47b6556519 in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#5  0x00007f47b6556f1e in  () at /usr/lib/libglib-2.0.so.0
#6  0x00007f47b655710e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#7  0x00007f47bc60b314 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#8  0x00007f47bc5ad3db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#9  0x00007f47bc3bc7ae in QThread::exec() () at /usr/lib/libQt5Core.so.5
#10 0x00007f46ce6651ba in KCupsConnection::run() () at /usr/lib/libkcupslib.so
#11 0x00007f47bc3c1b4d in  () at /usr/lib/libQt5Core.so.5
#12 0x00007f47bb57608c in start_thread () at /usr/lib/libpthread.so.0
#13 0x00007f47bbcc9e7f in clone () at /usr/lib/libc.so.6

Thread 16 (Thread 0x7f46ea041700 (LWP 770)):
#0  0x00007f47bb57c3bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f470b404fec in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f470b404ef8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f47bb57608c in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f47bbcc9e7f in clone () at /usr/lib/libc.so.6

Thread 15 (Thread 0x7f46f37fe700 (LWP 767)):
#0  0x00007f47b6556fe8 in  () at /usr/lib/libglib-2.0.so.0
#1  0x00007f47b655710e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#2  0x00007f47bc60b314 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#3  0x00007f47bc5ad3db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f47bc3bc7ae in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00007f47c019150b in  () at /usr/lib/libQt5Quick.so.5
#6  0x00007f47bc3c1b4d in  () at /usr/lib/libQt5Core.so.5
#7  0x00007f47bb57608c in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f47bbcc9e7f in clone () at /usr/lib/libc.so.6

Thread 14 (Thread 0x7f46ebfff700 (LWP 747)):
#0  0x00007f47bb57c3bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f470b404fec in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f470b404ef8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f47bb57608c in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f47bbcc9e7f in clone () at /usr/lib/libc.so.6

Thread 13 (Thread 0x7f46f3fff700 (LWP 746)):
#0  0x00007f47bb57c3bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f470b404fec in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f470b404ef8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f47bb57608c in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f47bbcc9e7f in clone () at /usr/lib/libc.so.6

Thread 12 (Thread 0x7f4704f9a700 (LWP 745)):
#0  0x00007f47bb57c3bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f470b404fec in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f470b404ef8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f47bb57608c in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f47bbcc9e7f in clone () at /usr/lib/libc.so.6

Thread 11 (Thread 0x7f470579b700 (LWP 744)):
#0  0x00007f47bb57c3bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f470b404fec in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f470b404ef8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f47bb57608c in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f47bbcc9e7f in clone () at /usr/lib/libc.so.6

Thread 10 (Thread 0x7f4705f9c700 (LWP 743)):
#0  0x00007f47bb57c3bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f470b404fec in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f470b404ef8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f47bb57608c in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f47bbcc9e7f in clone () at /usr/lib/libc.so.6

Thread 9 (Thread 0x7f470679d700 (LWP 742)):
#0  0x00007f47bb57c3bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f470b404fec in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f470b404ef8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f47bb57608c in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f47bbcc9e7f in clone () at /usr/lib/libc.so.6

Thread 8 (Thread 0x7f4706f9e700 (LWP 741)):
#0  0x00007f47bb57c3bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f470b404fec in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f470b404ef8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f47bb57608c in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f47bbcc9e7f in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7f4796b26700 (LWP 739)):
#0  0x00007f47bb57c3bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f47c1eedf77 in  () at /usr/lib/libQt5Script.so.5
#2  0x00007f47c1eedfb9 in  () at /usr/lib/libQt5Script.so.5
#3  0x00007f47bb57608c in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f47bbcc9e7f in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7f4797fff700 (LWP 727)):
#0  0x00007f47b659db79 in g_mutex_lock () at /usr/lib/libglib-2.0.so.0
#1  0x00007f47b6556525 in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#2  0x00007f47b6556f1e in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007f47b655710e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007f47bc60b314 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f47bc5ad3db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f47bc3bc7ae in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007f47bc3c1b4d in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f47bb57608c in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f47bbcc9e7f in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7f47a2568700 (LWP 722)):
#0  0x00007f47bbcbf97b in poll () at /usr/lib/libc.so.6
#1  0x00007f47b6556ff3 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f47b655710e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f47bc60b314 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f47bc5ad3db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f47bc3bc7ae in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f47bf5d3379 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007f47bc3c1b4d in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f47bb57608c in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f47bbcc9e7f in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7f47a3fff700 (LWP 690)):
#0  0x00007f47bbcbb3d8 in read () at /usr/lib/libc.so.6
#1  0x00007f47b659c7d1 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f47b6556ac8 in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#3  0x00007f47b6556f96 in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007f47b655710e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#5  0x00007f47bc60b314 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f47bc5ad3db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#7  0x00007f47bc3bc7ae in QThread::exec() () at /usr/lib/libQt5Core.so.5
#8  0x00007f47bf5d3379 in  () at /usr/lib/libQt5Qml.so.5
#9  0x00007f47bc3c1b4d in  () at /usr/lib/libQt5Core.so.5
#10 0x00007f47bb57608c in start_thread () at /usr/lib/libpthread.so.0
#11 0x00007f47bbcc9e7f in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7f47a9bcd700 (LWP 642)):
#0  0x00007f47bc60b05f in  () at /usr/lib/libQt5Core.so.5
#1  0x00007f47b6556519 in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#2  0x00007f47b6556f1e in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007f47b655710e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007f47bc60b314 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f47bc5ad3db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f47bc3bc7ae in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007f47bca2e416 in  () at /usr/lib/libQt5DBus.so.5
#8  0x00007f47bc3c1b4d in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f47bb57608c in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f47bbcc9e7f in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7f47abfb5700 (LWP 626)):
#0  0x00007f47bbcbf97b in poll () at /usr/lib/libc.so.6
#1  0x00007f47c0de38e0 in  () at /usr/lib/libxcb.so.1
#2  0x00007f47c0de5679 in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007f47ae73d82a in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007f47bc3c1b4d in  () at /usr/lib/libQt5Core.so.5
#5  0x00007f47bb57608c in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f47bbcc9e7f in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7f47c281c800 (LWP 607)):
#0  0x00007f47bb57c3bd in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f47c0de3b57 in  () at /usr/lib/libxcb.so.1
#2  0x00007f47c0de539f in  () at /usr/lib/libxcb.so.1
#3  0x00007f47c0de5511 in xcb_wait_for_reply64 () at /usr/lib/libxcb.so.1
#4  0x00007f47c10424d8 in _XReply () at /usr/lib/libX11.so.6
#5  0x00007f47b360327a in XSyncQueryCounter () at /usr/lib/libXext.so.6
#6  0x00007f46c9f581d5 in  () at /usr/lib/qt/plugins/kf5/org.kde.kidletime.platforms/KF5IdleTimeXcbPlugin0.so
#7  0x00007f46ca7e75be in  () at /usr/lib/qt/plugins/plasma/dataengine/plasma_engine_powermanagement.so
#8  0x00007f47c094ab39 in  () at /usr/lib/libKF5Plasma.so.5
#9  0x00007f47c094fb10 in  () at /usr/lib/libKF5Plasma.so.5
#10 0x00007f47bc5df6c6 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#11 0x00007f47c0943983 in Plasma::DataContainer::updateRequested(Plasma::DataContainer*) () at /usr/lib/libKF5Plasma.so.5
#12 0x00007f47c0962e49 in  () at /usr/lib/libKF5Plasma.so.5
#13 0x00007f47bc5e00cb in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#14 0x00007f47bd5b6fec in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#15 0x00007f47bd5be9c6 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#16 0x00007f47bc5aeda0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#17 0x00007f47bc60a738 in QTimerInfoList::activateTimers() () at /usr/lib/libQt5Core.so.5
#18 0x00007f47bc60af32 in  () at /usr/lib/libQt5Core.so.5
#19 0x00007f47b6556e38 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#20 0x00007f47b6557081 in  () at /usr/lib/libglib-2.0.so.0
#21 0x00007f47b655710e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#22 0x00007f47bc60b2f1 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#23 0x00007f47ae7c5482 in  () at /usr/lib/libQt5XcbQpa.so.5
#24 0x00007f47bc5ad3db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#25 0x00007f47bc5b67d8 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#26 0x000055bcb7ae2743 in  ()
#27 0x00007f47bbbf4f4a in __libc_start_main () at /usr/lib/libc.so.6
#28 0x000055bcb7ae2afa in _start ()

Reported using DrKonqi