Application: plasmashell (5.13.2)

Qt Version: 5.10.1
Frameworks Version: 5.47.0
Operating System: Linux 4.16.0-2-amd64 x86_64
Distribution: Debian GNU/Linux testing (buster)

-- Information about the crash:
- What I was doing when the application crashed:
Almost everytime I search an application into the application launcher, plasmashell is crashing during the charge or more generally after I clicked on the selected application.

- Unusual behavior I noticed:
Plasmshell is crashing. It is generally restarting by its own. Sometimes (after X times?) I need to restart it by myself (nohup plasmashell &).

 I did not find something one my system (Debian Buster) that could cause this issue. It is also hapenning to two other of my collegues (same distribution).

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".
[Current thread is 1 (Thread 0x7f814bf2d100 (LWP 1652))]

Thread 15 (Thread 0x7f8062ffd700 (LWP 3348)):
#0  0x00007f8144a474ec in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55967b311254) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f8144a474ec in __pthread_cond_wait_common (abstime=0x0, mutex=0x55967b311200, cond=0x55967b311228) at pthread_cond_wait.c:502
#2  0x00007f8144a474ec in __pthread_cond_wait (cond=0x55967b311228, mutex=0x55967b311200) at pthread_cond_wait.c:655
#3  0x00007f8145886fbb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f80903226d5 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f80903267a8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f80903218fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f8090326802 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f80903218fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007f8090326802 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#10 0x00007f80903218fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#11 0x00007f809032466b in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#12 0x00007f8145885b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f8144a415aa in start_thread (arg=0x7f8062ffd700) at pthread_create.c:463
#14 0x00007f8145191cbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7f80637fe700 (LWP 3347)):
#0  0x00007f8144a474ec in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55967b311254) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f8144a474ec in __pthread_cond_wait_common (abstime=0x0, mutex=0x55967b311200, cond=0x55967b311228) at pthread_cond_wait.c:502
#2  0x00007f8144a474ec in __pthread_cond_wait (cond=0x55967b311228, mutex=0x55967b311200) at pthread_cond_wait.c:655
#3  0x00007f8145886fbb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f80903226d5 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f80903267a8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f80903218fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f8090326802 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f80903218fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007f809032466b in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#10 0x00007f8145885b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f8144a415aa in start_thread (arg=0x7f80637fe700) at pthread_create.c:463
#12 0x00007f8145191cbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7f8063fff700 (LWP 3346)):
#0  0x00007f8144a474ec in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55967b311254) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f8144a474ec in __pthread_cond_wait_common (abstime=0x0, mutex=0x55967b311200, cond=0x55967b311228) at pthread_cond_wait.c:502
#2  0x00007f8144a474ec in __pthread_cond_wait (cond=0x55967b311228, mutex=0x55967b311200) at pthread_cond_wait.c:655
#3  0x00007f8145886fbb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f80903226d5 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f80903267a8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f80903218fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f8090326802 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f80903218fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007f809032466b in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#10 0x00007f8145885b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f8144a415aa in start_thread (arg=0x7f8063fff700) at pthread_create.c:463
#12 0x00007f8145191cbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f8068995700 (LWP 3345)):
#0  0x00007f8144a474ec in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55967b311254) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f8144a474ec in __pthread_cond_wait_common (abstime=0x0, mutex=0x55967b311200, cond=0x55967b311228) at pthread_cond_wait.c:502
#2  0x00007f8144a474ec in __pthread_cond_wait (cond=0x55967b311228, mutex=0x55967b311200) at pthread_cond_wait.c:655
#3  0x00007f8145886fbb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f80903226d5 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f80903267a8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f80903218fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f8090326802 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f80903218fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007f809032466b in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#10 0x00007f8145885b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f8144a415aa in start_thread (arg=0x7f8068995700) at pthread_create.c:463
#12 0x00007f8145191cbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f8069196700 (LWP 3344)):
#0  0x00007f8144a474ec in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55967b311254) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f8144a474ec in __pthread_cond_wait_common (abstime=0x0, mutex=0x55967b311200, cond=0x55967b311228) at pthread_cond_wait.c:502
#2  0x00007f8144a474ec in __pthread_cond_wait (cond=0x55967b311228, mutex=0x55967b311200) at pthread_cond_wait.c:655
#3  0x00007f8145886fbb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f80903226d5 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f80903267a8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f80903218fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f8090326802 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f80903218fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007f809032466b in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#10 0x00007f8145885b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f8144a415aa in start_thread (arg=0x7f8069196700) at pthread_create.c:463
#12 0x00007f8145191cbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f8069997700 (LWP 3343)):
[KCrash Handler]
#6  0x00007f8145ab0f80 in QVariant::QVariant(QVariant const&) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f807e287c8b in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/sqldrivers/libqsqlite.so
#8  0x00007f807e28553e in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/sqldrivers/libqsqlite.so
#9  0x00007f81435f1304 in QSqlQuery::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Sql.so.5
#10 0x00007f806a9cff93 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/krunner_bookmarksrunner.so
#11 0x00007f806a9d230a in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/krunner_bookmarksrunner.so
#12 0x00007f806a9cd465 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/krunner_bookmarksrunner.so
#13 0x00007f806a9cb0ad in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/krunner_bookmarksrunner.so
#14 0x00007f806a9d4a3a in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/krunner_bookmarksrunner.so
#15 0x00007f8090e13320 in Plasma::AbstractRunner::performMatch(Plasma::RunnerContext&) () at /usr/lib/x86_64-linux-gnu/libKF5Runner.so.5
#16 0x00007f8090325f68 in ThreadWeaver::Executor::run(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#17 0x00007f8090324bd0 in ThreadWeaver::Job::execute(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#18 0x00007f809032472d in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#19 0x00007f8145885b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f8144a415aa in start_thread (arg=0x7f8069997700) at pthread_create.c:463
#21 0x00007f8145191cbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f806a198700 (LWP 3342)):
#0  0x00007f8144a474ec in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55967b311254) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f8144a474ec in __pthread_cond_wait_common (abstime=0x0, mutex=0x55967b311200, cond=0x55967b311228) at pthread_cond_wait.c:502
#2  0x00007f8144a474ec in __pthread_cond_wait (cond=0x55967b311228, mutex=0x55967b311200) at pthread_cond_wait.c:655
#3  0x00007f8145886fbb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f80903226d5 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f80903267a8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f80903218fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f8090326802 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f80903218fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007f809032466b in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#10 0x00007f8145885b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f8144a415aa in start_thread (arg=0x7f806a198700) at pthread_create.c:463
#12 0x00007f8145191cbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f8071f69700 (LWP 3341)):
#0  0x00007f8144a474ec in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55967b311254) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f8144a474ec in __pthread_cond_wait_common (abstime=0x0, mutex=0x55967b311200, cond=0x55967b311228) at pthread_cond_wait.c:502
#2  0x00007f8144a474ec in __pthread_cond_wait (cond=0x55967b311228, mutex=0x55967b311200) at pthread_cond_wait.c:655
#3  0x00007f8145886fbb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f80903226d5 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f80903267a8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f80903218fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f8090326802 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f80903218fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007f809032466b in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#10 0x00007f8145885b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f8144a415aa in start_thread (arg=0x7f8071f69700) at pthread_create.c:463
#12 0x00007f8145191cbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f809286c700 (LWP 1859)):
#0  0x00007f8145183094 in __GI___libc_read (fd=15, buf=0x7f809286bae0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f813f4ce960 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f813f489f27 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f813f48a3e0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f813f48a54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f8145ac71bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f8145a6ab6a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f81458807ea in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f8149826586 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007f8145885b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f8144a415aa in start_thread (arg=0x7f809286c700) at pthread_create.c:463
#11 0x00007f8145191cbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f809ffff700 (LWP 1851)):
#0  0x00007f8144a474ec in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x559675bb9934) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f8144a474ec in __pthread_cond_wait_common (abstime=0x0, mutex=0x559675bb98e0, cond=0x559675bb9908) at pthread_cond_wait.c:502
#2  0x00007f8144a474ec in __pthread_cond_wait (cond=0x559675bb9908, mutex=0x559675bb98e0) at pthread_cond_wait.c:655
#3  0x00007f8124ececdb in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f8124ecea07 in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f8144a415aa in start_thread (arg=0x7f809ffff700) at pthread_create.c:463
#6  0x00007f8145191cbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f8126d5c700 (LWP 1850)):
#0  0x00007f8144a474ec in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f814ba58fb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f8144a474ec in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f814ba58f68, cond=0x7f814ba58f90) at pthread_cond_wait.c:502
#2  0x00007f8144a474ec in __pthread_cond_wait (cond=0x7f814ba58f90, mutex=0x7f814ba58f68) at pthread_cond_wait.c:655
#3  0x00007f814b7626a4 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#4  0x00007f814b7626e9 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#5  0x00007f8144a415aa in start_thread (arg=0x7f8126d5c700) at pthread_create.c:463
#6  0x00007f8145191cbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f812dc95700 (LWP 1724)):
#0  0x00007f81451875d9 in __GI___poll (fds=0x7f8120004a00, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f813f48a439 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f813f48a54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8145ac71bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f8145a6ab6a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f81458807ea in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f81493d0885 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f8145885b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f8144a415aa in start_thread (arg=0x7f812dc95700) at pthread_create.c:463
#9  0x00007f8145191cbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f812f6da700 (LWP 1689)):
#0  0x00007f81451875d9 in __GI___poll (fds=0x7f8128004db0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f813f48a439 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f813f48a54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8145ac71bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f8145a6ab6a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f81458807ea in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f8147d90df5 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f8145885b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f8144a415aa in start_thread (arg=0x7f812f6da700) at pthread_create.c:463
#9  0x00007f8145191cbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f8135b08700 (LWP 1677)):
#0  0x00007f81451875d9 in __GI___poll (fds=0x7f8135b07c68, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f814a45a0f7 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f814a45bd1a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f8137a66b19 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f8145885b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8144a415aa in start_thread (arg=0x7f8135b08700) at pthread_create.c:463
#6  0x00007f8145191cbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f814bf2d100 (LWP 1652)):
#0  0x00007f8144a474ec in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55967a9238d0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f8144a474ec in __pthread_cond_wait_common (abstime=0x0, mutex=0x55967590e5c8, cond=0x55967a9238a8) at pthread_cond_wait.c:502
#2  0x00007f8144a474ec in __pthread_cond_wait (cond=0x55967a9238a8, mutex=0x55967590e5c8) at pthread_cond_wait.c:655
#3  0x00007f814a45a302 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#4  0x00007f814a45be0a in xcb_wait_for_special_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#5  0x00007f8126435a8b in  () at /usr/lib/x86_64-linux-gnu/libGLX_mesa.so.0
#6  0x00007f8126435bd8 in  () at /usr/lib/x86_64-linux-gnu/libGLX_mesa.so.0
#7  0x00007f8126436cae in  () at /usr/lib/x86_64-linux-gnu/libGLX_mesa.so.0
#8  0x00007f8126437b49 in  () at /usr/lib/x86_64-linux-gnu/libGLX_mesa.so.0
#9  0x00007f812500930f in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#10 0x00007f8125009611 in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#11 0x00007f8125004b1c in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#12 0x00007f8149868158 in QSGBatchRenderer::Renderer::renderBatches() () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#13 0x00007f814986da84 in QSGBatchRenderer::Renderer::render() () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007f814985e220 in QSGRenderer::renderScene(QSGBindable const&) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#15 0x00007f814985e6db in QSGRenderer::renderScene(unsigned int) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#16 0x00007f8149897c20 in QSGDefaultRenderContext::renderNextFrame(QSGRenderer*, unsigned int) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#17 0x00007f81498fb8b8 in QQuickWindowPrivate::renderSceneGraph(QSize const&) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#18 0x00007f814988a1b9 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#19 0x00007f8149906296 in QQuickWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#20 0x00005596750388eb in  ()
#21 0x00007f814709b6cc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#22 0x00007f81470a2e84 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#23 0x00007f8145a6c938 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007f8145fe4291 in QWindowPrivate::deliverUpdateRequest() () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#25 0x00007f8145fe47b9 in QWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#26 0x00007f8149906235 in QQuickWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#27 0x00005596750388eb in  ()
#28 0x00007f814709b6cc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#29 0x00007f81470a2e84 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#30 0x00007f8145a6c938 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007f8145ac663e in QTimerInfoList::activateTimers() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007f8145ac6e39 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#33 0x00007f813f48a287 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007f813f48a4c0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007f813f48a54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007f8145ac719f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#37 0x00007f8137aeb2c1 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#38 0x00007f8145a6ab6a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#39 0x00007f8145a73ed4 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#40 0x0000559675028aa8 in  ()
#41 0x00007f81450bca87 in __libc_start_main (main=0x559675027f60, argc=1, argv=0x7fff28dd1f18, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff28dd1f08) at ../csu/libc-start.c:310
#42 0x0000559675028f0a in _start ()

Reported using DrKonqi