Application: plasmashell (5.14.5)

Qt Version: 5.11.3
Frameworks Version: 5.54.0
Operating System: Linux 4.19.0-5-amd64 x86_64
Distribution: Debian GNU/Linux 10 (buster)

-- Information about the crash:
I'm having some trouble reproducing this again, but I hope that my backtrace might shed some light on this.

I was using Konversation a few hours ago, having been playing with the On-Screen Display settings. I might've kept the configuration dialog open, but anyway closing the main window made Plasma crash somehow.

I'll keep playing with it and update if I can reproduce it.

The crash does not seem to be reproducible.

-- 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 0x7fc5b6473840 (LWP 753))]

Thread 13 (Thread 0x7fc5759dc700 (LWP 9053)):
#0  0x00007fc5bb476819 in __GI___poll (fds=0x7fc558001b30, nfds=3, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fc5b91e6101 in ?? () from /lib/x86_64-linux-gnu/libpulse.so.0
#2  0x00007fc5b91d7920 in pa_mainloop_poll () from /lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007fc5b91d7f6e in pa_mainloop_iterate () from /lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007fc5b91d8020 in pa_mainloop_run () from /lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007fc5b91e6049 in ?? () from /lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007fc5b748f4f8 in ?? () from /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-12.2.so
#7  0x00007fc5ba6abfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#8  0x00007fc5bb4814cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7fc5768a9700 (LWP 5137)):
#0  futex_wait_cancelable (private=0, expected=0, futex_word=0x5571e5db0a04) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x5571e5db09b0, cond=0x5571e5db09d8) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x5571e5db09d8, mutex=0x5571e5db09b0) at pthread_cond_wait.c:655
#3  0x00007fc5bb79025b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x5571e5db09b0) at thread/qwaitcondition_unix.cpp:143
#4  QWaitCondition::wait (this=<optimized out>, mutex=0x5571e5879410, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:215
#5  0x00007fc595006d30 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () from /lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007fc59500aae8 in ?? () from /lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007fc595005e3d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007fc59500ab42 in ?? () from /lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007fc595005e3d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#10 0x00007fc595008bb9 in ThreadWeaver::Thread::run() () from /lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#11 0x00007fc5bb78faa7 in QThreadPrivate::start (arg=0x7fc570003ce0) at thread/qthread_unix.cpp:367
#12 0x00007fc5ba6abfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#13 0x00007fc5bb4814cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7fc5770aa700 (LWP 5136)):
#0  futex_wait_cancelable (private=0, expected=0, futex_word=0x5571e5db0a04) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x5571e5db09b0, cond=0x5571e5db09d8) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x5571e5db09d8, mutex=0x5571e5db09b0) at pthread_cond_wait.c:655
#3  0x00007fc5bb79025b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x5571e5db09b0) at thread/qwaitcondition_unix.cpp:143
#4  QWaitCondition::wait (this=<optimized out>, mutex=0x5571e5879410, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:215
#5  0x00007fc595006d30 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () from /lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007fc59500aae8 in ?? () from /lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007fc595005e3d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007fc59500ab42 in ?? () from /lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007fc595005e3d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#10 0x00007fc59500ab42 in ?? () from /lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#11 0x00007fc595005e3d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#12 0x00007fc59500ab42 in ?? () from /lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#13 0x00007fc595005e3d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#14 0x00007fc59500ab42 in ?? () from /lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#15 0x00007fc595005e3d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#16 0x00007fc59500ab42 in ?? () from /lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#17 0x00007fc595005e3d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#18 0x00007fc595008bb9 in ThreadWeaver::Thread::run() () from /lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#19 0x00007fc5bb78faa7 in QThreadPrivate::start (arg=0x5571e5d8b310) at thread/qthread_unix.cpp:367
#20 0x00007fc5ba6abfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#21 0x00007fc5bb4814cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7fc5778ab700 (LWP 5135)):
#0  futex_wait_cancelable (private=0, expected=0, futex_word=0x5571e5db0a04) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x5571e5db09b0, cond=0x5571e5db09d8) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x5571e5db09d8, mutex=0x5571e5db09b0) at pthread_cond_wait.c:655
#3  0x00007fc5bb79025b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x5571e5db09b0) at thread/qwaitcondition_unix.cpp:143
#4  QWaitCondition::wait (this=<optimized out>, mutex=0x5571e5879410, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:215
#5  0x00007fc595006d30 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () from /lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007fc59500aae8 in ?? () from /lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007fc595005e3d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007fc59500ab42 in ?? () from /lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007fc595005e3d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#10 0x00007fc595008bb9 in ThreadWeaver::Thread::run() () from /lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#11 0x00007fc5bb78faa7 in QThreadPrivate::start (arg=0x5571e56813b0) at thread/qthread_unix.cpp:367
#12 0x00007fc5ba6abfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#13 0x00007fc5bb4814cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7fc5780ac700 (LWP 5134)):
#0  futex_wait_cancelable (private=0, expected=0, futex_word=0x5571e5db0a04) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x5571e5db09b0, cond=0x5571e5db09d8) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x5571e5db09d8, mutex=0x5571e5db09b0) at pthread_cond_wait.c:655
#3  0x00007fc5bb79025b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x5571e5db09b0) at thread/qwaitcondition_unix.cpp:143
#4  QWaitCondition::wait (this=<optimized out>, mutex=0x5571e5879410, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:215
#5  0x00007fc595006d30 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () from /lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007fc59500aae8 in ?? () from /lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007fc595005e3d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007fc59500ab42 in ?? () from /lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007fc595005e3d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#10 0x00007fc595008bb9 in ThreadWeaver::Thread::run() () from /lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#11 0x00007fc5bb78faa7 in QThreadPrivate::start (arg=0x5571e30781b0) at thread/qthread_unix.cpp:367
#12 0x00007fc5ba6abfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#13 0x00007fc5bb4814cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7fc596890700 (LWP 958)):
#0  0x00007ffdf4b13b34 in clock_gettime ()
#1  0x00007fc5bb48eff6 in __GI___clock_gettime (clock_id=clock_id@entry=1, tp=tp@entry=0x7fc59688fa60) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007fc5bb9881a1 in qt_clock_gettime (ts=0x7fc59688fa60, clock=1) at kernel/qelapsedtimer_unix.cpp:175
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at kernel/qelapsedtimer_unix.cpp:166
#4  qt_gettime () at kernel/qelapsedtimer_unix.cpp:175
#5  0x00007fc5bb9869d9 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7fc5880048f0) at kernel/qtimerinfo_unix.cpp:91
#6  0x00007fc5bb986fd5 in QTimerInfoList::timerWait (this=0x7fc5880048f0, tm=...) at kernel/qtimerinfo_unix.cpp:388
#7  0x00007fc5bb9885fe in timerSourcePrepareHelper (timeout=0x7fc59688fb44, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:161
#8  timerSourcePrepare (source=<optimized out>, timeout=0x7fc59688fb44) at kernel/qeventdispatcher_glib.cpp:165
#9  0x00007fc5b956a669 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007fc5b956b06b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007fc5b956b25c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007fc5bb98887b in QEventDispatcherGlib::processEvents (this=0x7fc588000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#13 0x00007fc5bb93627b in QEventLoop::exec (this=this@entry=0x7fc59688fd20, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:140
#14 0x00007fc5bb785ec6 in QThread::exec (this=this@entry=0x7fc5a800f060) at ../../include/QtCore/../../src/corelib/global/qflags.h:120
#15 0x00007fc5bd33d476 in QQuickPixmapReader::run (this=0x7fc5a800f060) at util/qquickpixmapcache.cpp:934
#16 0x00007fc5bb78faa7 in QThreadPrivate::start (arg=0x7fc5a800f060) at thread/qthread_unix.cpp:367
#17 0x00007fc5ba6abfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#18 0x00007fc5bb4814cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7fc597dec700 (LWP 939)):
#0  std::__atomic_base<QMutexData*>::compare_exchange_strong (__m2=std::memory_order_relaxed, __m1=std::memory_order_release, __p2=0x0, __p1=<synthetic pointer>: 0x1, this=this@entry=0x5571e23d7970) at /usr/include/c++/8/bits/atomic_base.h:742
#1  std::atomic<QMutexData*>::compare_exchange_strong (__m2=std::memory_order_relaxed, __m1=std::memory_order_release, __p2=0x0, __p1=<synthetic pointer>: 0x1, this=this@entry=0x5571e23d7970) at /usr/include/c++/8/atomic:498
#2  QAtomicOps<QMutexData*>::testAndSetRelease<QMutexData*> (currentValue=<synthetic pointer>, newValue=0x0, expectedValue=0x1, _q_value=...) at ../../include/QtCore/../../src/corelib/thread/qatomic_cxx11.h:299
#3  QBasicAtomicPointer<QMutexData>::testAndSetRelease (currentValue=<synthetic pointer>: <optimized out>, newValue=0x0, expectedValue=0x1, this=this@entry=0x5571e23d7970) at ../../include/QtCore/../../src/corelib/thread/qbasicatomic.h:265
#4  QBasicMutex::fastTryUnlock (current=<synthetic pointer>: <optimized out>, this=this@entry=0x5571e23d7970) at thread/qmutex.h:110
#5  QMutex::unlock (this=this@entry=0x5571e23d7970) at thread/qmutex.cpp:337
#6  0x00007fc5bb988ce5 in QMutexLocker::unlock (this=<synthetic pointer>) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:240
#7  QMutexLocker::~QMutexLocker (this=<synthetic pointer>, __in_chrg=<optimized out>) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:213
#8  QThreadData::canWaitLocked (this=<optimized out>) at ../../include/QtCore/5.11.3/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:254
#9  postEventSourcePrepare (timeout=<synthetic pointer>, s=0x7fc590004ba0) at kernel/qeventdispatcher_glib.cpp:259
#10 postEventSourceCheck (source=0x7fc590004ba0) at kernel/qeventdispatcher_glib.cpp:269
#11 0x00007fc5b956ab11 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007fc5b956b0e0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#13 0x00007fc5b956b25c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#14 0x00007fc5bb98887b in QEventDispatcherGlib::processEvents (this=0x7fc590000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#15 0x00007fc5bb93627b in QEventLoop::exec (this=this@entry=0x7fc597debd20, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:140
#16 0x00007fc5bb785ec6 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:120
#17 0x00007fc59c8436f7 in KCupsConnection::run() () from /lib/x86_64-linux-gnu/libkcupslib.so
#18 0x00007fc5bb78faa7 in QThreadPrivate::start (arg=0x5571e2277ff0) at thread/qthread_unix.cpp:367
#19 0x00007fc5ba6abfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#20 0x00007fc5bb4814cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7fc59d2d8700 (LWP 907)):
#0  0x00007fc5b95b4e65 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fc5b956ab1c in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc5b956b0e0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc5b956b25c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fc5bb98887b in QEventDispatcherGlib::processEvents (this=0x7fc598000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007fc5bb93627b in QEventLoop::exec (this=this@entry=0x7fc59d2d7d60, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:140
#6  0x00007fc5bb785ec6 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:120
#7  0x00007fc5bb78faa7 in QThreadPrivate::start (arg=0x5571e239b640) at thread/qthread_unix.cpp:367
#8  0x00007fc5ba6abfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#9  0x00007fc5bb4814cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fc5acc5a700 (LWP 898)):
#0  futex_wait_cancelable (private=0, expected=0, futex_word=0x5571e1e20428) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x5571e1e203d8, cond=0x5571e1e20400) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x5571e1e20400, mutex=0x5571e1e203d8) at pthread_cond_wait.c:655
#3  0x00007fc5ad23de03 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007fc5ad23db57 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007fc5ba6abfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#6  0x00007fc5bb4814cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fc5aedee700 (LWP 885)):
#0  0x00007fc5b956b25c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fc5bb98887b in QEventDispatcherGlib::processEvents (this=0x7fc5a0000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#2  0x00007fc5bb93627b in QEventLoop::exec (this=this@entry=0x7fc5aededd40, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:140
#3  0x00007fc5bb785ec6 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:120
#4  0x00007fc5bd0b8c65 in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#5  0x00007fc5bb78faa7 in QThreadPrivate::start (arg=0x5571e1af8990) at thread/qthread_unix.cpp:367
#6  0x00007fc5ba6abfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#7  0x00007fc5bb4814cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fc5affff700 (LWP 817)):
#0  0x00007fc5b956ac16 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fc5b956b0e0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc5b956b25c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc5bb98887b in QEventDispatcherGlib::processEvents (this=0x7fc5a8000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007fc5bb93627b in QEventLoop::exec (this=this@entry=0x7fc5afffed30, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:140
#5  0x00007fc5bb785ec6 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:120
#6  0x00007fc5bc1c2545 in ?? () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007fc5bb78faa7 in QThreadPrivate::start (arg=0x7fc5bc242d60) at thread/qthread_unix.cpp:367
#8  0x00007fc5ba6abfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#9  0x00007fc5bb4814cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fc5b56c7700 (LWP 781)):
#0  0x00007fc5bb476819 in __GI___poll (fds=0x7fc5b56c6c78, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fc5bd789cf7 in ?? () from /lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fc5bd78b91a in xcb_wait_for_event () from /lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fc5b6013d79 in QXcbEventReader::run (this=0x5571e1a2b2d0) at qxcbconnection.h:409
#4  0x00007fc5bb78faa7 in QThreadPrivate::start (arg=0x5571e1a2b2d0) at thread/qthread_unix.cpp:367
#5  0x00007fc5ba6abfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#6  0x00007fc5bb4814cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fc5b6473840 (LWP 753)):
[KCrash Handler]
#6  QSGNode::markDirty (this=0x5571e688bda0, bits=..., bits@entry=...) at scenegraph/coreapi/qsgnode.cpp:672
#7  0x00007fc5bd373109 in QSGTransformNode::setMatrix (this=<optimized out>, matrix=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qflags.h:120
#8  0x00007fc5bd35b2d7 in QQuickTransformAnimatorJob::Helper::commit (this=0x7fc5b0052020) at util/qquickanimatorjob.cpp:415
#9  0x00007fc5bd35edfc in QQuickAnimatorController::advance (this=0x5571e2eb42e0) at util/qquickanimatorcontroller.cpp:107
#10 0x00007fc5bd4122a8 in QQuickWindowPrivate::renderSceneGraph (this=this@entry=0x5571e22d38f0, size=...) at items/qquickwindow.cpp:455
#11 0x00007fc5bd3a265c in QSGGuiThreadRenderLoop::renderWindow (this=0x5571e203e1d0, window=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qsize.h:119
#12 0x00007fc5bd41d386 in QQuickWindow::event (this=0x5571e2f1aeb0, e=0x7ffdf4a13480) at items/qquickwindow.cpp:1615
#13 0x00005571e17c92f3 in PanelView::event (this=0x5571e2f1aeb0, e=0x7ffdf4a13480) at ./shell/panelview.cpp:925
#14 0x00007fc5bc4314b1 in QApplicationPrivate::notify_helper (this=this@entry=0x5571e1a1a9a0, receiver=receiver@entry=0x5571e2f1aeb0, e=e@entry=0x7ffdf4a13480) at kernel/qapplication.cpp:3726
#15 0x00007fc5bc438950 in QApplication::notify (this=0x7ffdf4a13bd0, receiver=0x5571e2f1aeb0, e=0x7ffdf4a13480) at kernel/qapplication.cpp:3485
#16 0x00007fc5bb9375a9 in QCoreApplication::notifyInternal2 (receiver=receiver@entry=0x5571e2f1aeb0, event=event@entry=0x7ffdf4a13480) at ../../include/QtCore/5.11.3/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:307
#17 0x00007fc5bbcf0f91 in QCoreApplication::sendEvent (event=0x7ffdf4a13480, receiver=0x5571e2f1aeb0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#18 QWindowPrivate::deliverUpdateRequest (this=this@entry=0x5571e22d38f0) at kernel/qwindow.cpp:2372
#19 0x00007fc5bbcf14c9 in QWindow::event (this=this@entry=0x5571e2f1aeb0, ev=ev@entry=0x7ffdf4a13840) at kernel/qwindow.cpp:2343
#20 0x00007fc5bd41d2db in QQuickWindow::event (this=0x5571e2f1aeb0, e=0x7ffdf4a13840) at items/qquickwindow.cpp:1634
#21 0x00005571e17c92f3 in PanelView::event (this=0x5571e2f1aeb0, e=0x7ffdf4a13840) at ./shell/panelview.cpp:925
#22 0x00007fc5bc4314b1 in QApplicationPrivate::notify_helper (this=this@entry=0x5571e1a1a9a0, receiver=receiver@entry=0x5571e2f1aeb0, e=e@entry=0x7ffdf4a13840) at kernel/qapplication.cpp:3726
#23 0x00007fc5bc438950 in QApplication::notify (this=0x7ffdf4a13bd0, receiver=0x5571e2f1aeb0, e=0x7ffdf4a13840) at kernel/qapplication.cpp:3485
#24 0x00007fc5bb9375a9 in QCoreApplication::notifyInternal2 (receiver=0x5571e2f1aeb0, event=event@entry=0x7ffdf4a13840) at ../../include/QtCore/5.11.3/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:307
#25 0x00007fc5bb987c78 in QCoreApplication::sendEvent (event=0x7ffdf4a13840, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#26 QTimerInfoList::activateTimers (this=0x5571e1a5ce00) at kernel/qtimerinfo_unix.cpp:643
#27 0x00007fc5bb98850c in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:182
#28 idleTimerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:229
#29 0x00007fc5b956af2e in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#30 0x00007fc5b956b1c8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#31 0x00007fc5b956b25c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007fc5bb988863 in QEventDispatcherGlib::processEvents (this=0x5571e1a5ec80, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#33 0x00007fc5b60aa3e1 in QPAEventDispatcherGlib::processEvents (this=0x5571e1a5ec80, flags=...) at qeventdispatcher_glib.cpp:69
#34 0x00007fc5bb93627b in QEventLoop::exec (this=this@entry=0x7ffdf4a13ac0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:140
#35 0x00007fc5bb93e262 in QCoreApplication::exec () at ../../include/QtCore/../../src/corelib/global/qflags.h:120
#36 0x00005571e17b91ab in main (argc=<optimized out>, argv=<optimized out>) at ./shell/main.cpp:212
[Inferior 1 (process 753) detached]

Reported using DrKonqi