Application: plasmashell (5.3.1)

Qt Version: 5.4.1
Operating System: Linux 4.0.4-2-desktop x86_64
Distribution: "openSUSE 20150602 (Tumbleweed) (x86_64)"

-- Information about the crash:
- What I was doing when the application crashed:
Changing colors and Icon from the "normal" Breeze color theme to the Breeze dark.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fb75350a880 (LWP 4874))]

Thread 25 (Thread 0x7fb73d08e700 (LWP 4876)):
#0  0x00007fb74cfdf4cd in poll () at /lib64/libc.so.6
#1  0x00007fb751de7322 in  () at /usr/lib64/libxcb.so.1
#2  0x00007fb751de8def in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#3  0x00007fb73f3ddc69 in  () at /usr/lib64/qt5/plugins/platforms/libqxcb.so
#4  0x00007fb74d6509ef in  () at /usr/lib64/libQt5Core.so.5
#5  0x00007fb74c5db484 in start_thread () at /lib64/libpthread.so.0
#6  0x00007fb74cfe7a4d in clone () at /lib64/libc.so.6

Thread 24 (Thread 0x7fb736b24700 (LWP 4885)):
#0  0x00007fb74cff3e3f in __libc_enable_asynccancel () at /lib64/libc.so.6
#1  0x00007fb74cfdf4c2 in poll () at /lib64/libc.so.6
#2  0x00007fb7494cde54 in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fb7494cdf6c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007fb74d88233b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fb74d828f2b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007fb74d64bdba in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007fb7508adf68 in  () at /usr/lib64/libQt5Qml.so.5
#8  0x00007fb74d6509ef in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007fb74c5db484 in start_thread () at /lib64/libpthread.so.0
#10 0x00007fb74cfe7a4d in clone () at /lib64/libc.so.6

Thread 23 (Thread 0x7fb724074700 (LWP 4886)):
#0  0x00007fb74cfdf4cd in poll () at /lib64/libc.so.6
#1  0x00007fb7494cde54 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fb7494cdf6c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fb74d88233b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fb74d828f2b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fb74d64bdba in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007fb7508adf68 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007fb74d6509ef in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fb74c5db484 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fb74cfe7a4d in clone () at /lib64/libc.so.6

Thread 22 (Thread 0x7fb721f8f700 (LWP 4891)):
#0  0x00007fb74cfdb59d in read () at /lib64/libc.so.6
#1  0x00007fb74950eb20 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fb7494cd989 in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fb7494cdde8 in  () at /usr/lib64/libglib-2.0.so.0
#4  0x00007fb7494cdf6c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#5  0x00007fb74d88233b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007fb74d828f2b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#7  0x00007fb74d64bdba in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#8  0x00007fb7508adf68 in  () at /usr/lib64/libQt5Qml.so.5
#9  0x00007fb74d6509ef in  () at /usr/lib64/libQt5Core.so.5
#10 0x00007fb74c5db484 in start_thread () at /lib64/libpthread.so.0
#11 0x00007fb74cfe7a4d in clone () at /lib64/libc.so.6

Thread 21 (Thread 0x7fb720e8e700 (LWP 4892)):
#0  0x00007fb74950fcd2 in g_mutex_unlock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007fb7494cd88b in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fb7494cdde8 in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fb7494cdf6c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007fb74d88233b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fb74d828f2b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007fb74d64bdba in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007fb7508adf68 in  () at /usr/lib64/libQt5Qml.so.5
#8  0x00007fb74d6509ef in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007fb74c5db484 in start_thread () at /lib64/libpthread.so.0
#10 0x00007fb74cfe7a4d in clone () at /lib64/libc.so.6

Thread 20 (Thread 0x7fb7137ff700 (LWP 4893)):
#0  0x00007fb74950fcb9 in g_mutex_lock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007fb7494cd4a9 in g_main_context_prepare () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fb7494cdd70 in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fb7494cdf6c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007fb74d88233b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fb74d828f2b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007fb74d64bdba in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007fb7508adf68 in  () at /usr/lib64/libQt5Qml.so.5
#8  0x00007fb74d6509ef in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007fb74c5db484 in start_thread () at /lib64/libpthread.so.0
#10 0x00007fb74cfe7a4d in clone () at /lib64/libc.so.6

Thread 19 (Thread 0x7fb7127fe700 (LWP 4894)):
#0  0x00007fb74d882220 in  () at /usr/lib64/libQt5Core.so.5
#1  0x00007fb7494cd8e1 in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fb7494cdde8 in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fb7494cdf6c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007fb74d88233b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fb74d828f2b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007fb74d64bdba in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007fb7508adf68 in  () at /usr/lib64/libQt5Qml.so.5
#8  0x00007fb74d6509ef in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007fb74c5db484 in start_thread () at /lib64/libpthread.so.0
#10 0x00007fb74cfe7a4d in clone () at /lib64/libc.so.6

Thread 18 (Thread 0x7fb7117fd700 (LWP 4895)):
#0  0x00007fb74cfdf4cd in poll () at /lib64/libc.so.6
#1  0x00007fb7494cde54 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fb7494cdf6c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fb74d88233b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fb74d828f2b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fb74d64bdba in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007fb7508adf68 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007fb74d6509ef in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fb74c5db484 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fb74cfe7a4d in clone () at /lib64/libc.so.6

Thread 17 (Thread 0x7fb6fffff700 (LWP 4896)):
#0  0x00007fb74950fcd4 in g_mutex_unlock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007fb7494cd490 in g_main_context_prepare () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fb7494cdd70 in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fb7494cdf6c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007fb74d88233b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fb74d828f2b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007fb74d64bdba in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007fb7508adf68 in  () at /usr/lib64/libQt5Qml.so.5
#8  0x00007fb74d6509ef in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007fb74c5db484 in start_thread () at /lib64/libpthread.so.0
#10 0x00007fb74cfe7a4d in clone () at /lib64/libc.so.6

Thread 16 (Thread 0x7fb6feffe700 (LWP 4897)):
#0  0x00007fb74950fcb9 in g_mutex_lock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007fb7494cd8ec in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fb7494cdde8 in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fb7494cdf6c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007fb74d88233b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fb74d828f2b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007fb74d64bdba in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007fb7508adf68 in  () at /usr/lib64/libQt5Qml.so.5
#8  0x00007fb74d6509ef in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007fb74c5db484 in start_thread () at /lib64/libpthread.so.0
#10 0x00007fb74cfe7a4d in clone () at /lib64/libc.so.6

Thread 15 (Thread 0x7fb6fdffd700 (LWP 4898)):
#0  0x00007fb74cfdf4cd in poll () at /lib64/libc.so.6
#1  0x00007fb7494cde54 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fb7494cdf6c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fb74d88233b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fb74d828f2b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fb74d64bdba in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007fb7508adf68 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007fb74d6509ef in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fb74c5db484 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fb74cfe7a4d in clone () at /lib64/libc.so.6

Thread 14 (Thread 0x7fb6fcffc700 (LWP 4899)):
#0  0x00007fb74d649480 in QMutex::unlock() () at /usr/lib64/libQt5Core.so.5
#1  0x00007fb74d882275 in  () at /usr/lib64/libQt5Core.so.5
#2  0x00007fb7494cd49d in g_main_context_prepare () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fb7494cdd70 in  () at /usr/lib64/libglib-2.0.so.0
#4  0x00007fb7494cdf6c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#5  0x00007fb74d88233b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007fb74d828f2b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#7  0x00007fb74d64bdba in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#8  0x00007fb7508adf68 in  () at /usr/lib64/libQt5Qml.so.5
#9  0x00007fb74d6509ef in  () at /usr/lib64/libQt5Core.so.5
#10 0x00007fb74c5db484 in start_thread () at /lib64/libpthread.so.0
#11 0x00007fb74cfe7a4d in clone () at /lib64/libc.so.6

Thread 13 (Thread 0x7fb6ef7ff700 (LWP 4900)):
#0  0x00007fb74c5df91f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fb752be747b in  () at /usr/lib64/libQt5Script.so.5
#2  0x00007fb752be74a9 in  () at /usr/lib64/libQt5Script.so.5
#3  0x00007fb74c5db484 in start_thread () at /lib64/libpthread.so.0
#4  0x00007fb74cfe7a4d in clone () at /lib64/libc.so.6

Thread 12 (Thread 0x7fb6eeffe700 (LWP 4901)):
#0  0x00007fb74950fcd4 in g_mutex_unlock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007fb7494cd8d9 in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fb7494cdde8 in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fb7494cdf6c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007fb74d88233b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fb74d828f2b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007fb74d64bdba in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007fb7508adf68 in  () at /usr/lib64/libQt5Qml.so.5
#8  0x00007fb74d6509ef in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007fb74c5db484 in start_thread () at /lib64/libpthread.so.0
#10 0x00007fb74cfe7a4d in clone () at /lib64/libc.so.6

Thread 11 (Thread 0x7fb663d14700 (LWP 4902)):
#0  0x00007fb74cfdf4cd in poll () at /lib64/libc.so.6
#1  0x00007fb7494cde54 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fb7494cdf6c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fb74d88233b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fb74d828f2b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fb74d64bdba in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007fb7508adf68 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007fb74d6509ef in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fb74c5db484 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fb74cfe7a4d in clone () at /lib64/libc.so.6

Thread 10 (Thread 0x7fb662342700 (LWP 4904)):
#0  0x00007fb74cfdf4cd in poll () at /lib64/libc.so.6
#1  0x00007fb7494cde54 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fb7494cdf6c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fb74d88233b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fb74d828f2b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fb74d64bdba in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007fb750f25fc2 in  () at /usr/lib64/libQt5Quick.so.5
#7  0x00007fb74d6509ef in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fb74c5db484 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fb74cfe7a4d in clone () at /lib64/libc.so.6

Thread 9 (Thread 0x7fb661b41700 (LWP 4909)):
#0  0x00007fb74cfdb59d in read () at /lib64/libc.so.6
#1  0x00007fb74950eb20 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fb7494cd989 in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fb7494cdde8 in  () at /usr/lib64/libglib-2.0.so.0
#4  0x00007fb7494cdf6c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#5  0x00007fb74d88233b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007fb74d828f2b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#7  0x00007fb74d64bdba in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#8  0x00007fb7508adf68 in  () at /usr/lib64/libQt5Qml.so.5
#9  0x00007fb74d6509ef in  () at /usr/lib64/libQt5Core.so.5
#10 0x00007fb74c5db484 in start_thread () at /lib64/libpthread.so.0
#11 0x00007fb74cfe7a4d in clone () at /lib64/libc.so.6

Thread 8 (Thread 0x7fb651e91700 (LWP 4910)):
#0  0x00007fb7494cb291 in  () at /usr/lib64/libglib-2.0.so.0
#1  0x00007fb7494cd883 in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fb7494cdde8 in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fb7494cdf6c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007fb74d88233b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fb74d828f2b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007fb74d64bdba in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007fb7508adf68 in  () at /usr/lib64/libQt5Qml.so.5
#8  0x00007fb74d6509ef in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007fb74c5db484 in start_thread () at /lib64/libpthread.so.0
#10 0x00007fb74cfe7a4d in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7fb650d8e700 (LWP 4911)):
#0  0x00007fb74cfdf4cd in poll () at /lib64/libc.so.6
#1  0x00007fb7494cde54 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fb7494cdf6c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fb74d88233b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fb74d828f2b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fb74d64bdba in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007fb7508adf68 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007fb74d6509ef in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fb74c5db484 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fb74cfe7a4d in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7fb64b7ff700 (LWP 4912)):
#0  0x00007fb74950fcd4 in g_mutex_unlock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007fb7494cdd63 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fb7494cdf6c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fb74d88233b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fb74d828f2b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fb74d64bdba in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007fb7508adf68 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007fb74d6509ef in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fb74c5db484 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fb74cfe7a4d in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7fb64a7fe700 (LWP 4913)):
#0  0x00007fb7494cde0d in  () at /usr/lib64/libglib-2.0.so.0
#1  0x00007fb7494cdf6c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fb74d88233b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#3  0x00007fb74d828f2b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fb74d64bdba in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#5  0x00007fb7508adf68 in  () at /usr/lib64/libQt5Qml.so.5
#6  0x00007fb74d6509ef in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007fb74c5db484 in start_thread () at /lib64/libpthread.so.0
#8  0x00007fb74cfe7a4d in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7fb63cb41700 (LWP 4914)):
#0  0x00007fb74950fcb9 in g_mutex_lock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007fb7494cde06 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fb7494cdf6c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fb74d88233b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fb74d828f2b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fb74d64bdba in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007fb63f080a27 in KCupsConnection::run() () at /usr/lib64/libkcupslib.so
#7  0x00007fb74d6509ef in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fb74c5db484 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fb74cfe7a4d in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7fb633fff700 (LWP 4915)):
#0  0x00007fb74950fcd4 in g_mutex_unlock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007fb7494cddfe in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fb7494cdf6c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fb74d88233b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fb74d828f2b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fb74d64bdba in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007fb7508adf68 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007fb74d6509ef in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fb74c5db484 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fb74cfe7a4d in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7fb632ffe700 (LWP 4916)):
#0  0x00007fb74d64948f in QMutex::unlock() () at /usr/lib64/libQt5Core.so.5
#1  0x00007fb74d882e45 in  () at /usr/lib64/libQt5Core.so.5
#2  0x00007fb7494cd8e1 in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fb7494cdde8 in  () at /usr/lib64/libglib-2.0.so.0
#4  0x00007fb7494cdf6c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#5  0x00007fb74d88233b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007fb74d828f2b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#7  0x00007fb74d64bdba in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#8  0x00007fb7508adf68 in  () at /usr/lib64/libQt5Qml.so.5
#9  0x00007fb74d6509ef in  () at /usr/lib64/libQt5Core.so.5
#10 0x00007fb74c5db484 in start_thread () at /lib64/libpthread.so.0
#11 0x00007fb74cfe7a4d in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7fb75350a880 (LWP 4874)):
[KCrash Handler]
#5  0x00007fb75069e809 in  () at /usr/lib64/libQt5Qml.so.5
#6  0x00007fb7508f1099 in QQmlDelegateModel::_q_itemsChanged(int, int, QVector<int> const&) () at /usr/lib64/libQt5Qml.so.5
#7  0x00007fb75091758c in  () at /usr/lib64/libQt5Qml.so.5
#8  0x00007fb750917a9f in QQmlDelegateModel::qt_metacall(QMetaObject::Call, int, void**) () at /usr/lib64/libQt5Qml.so.5
#9  0x00007fb74d85a951 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#10 0x00007fb74d8d589c in QAbstractItemModel::dataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) () at /usr/lib64/libQt5Core.so.5
#11 0x00007fb653dd9794 in  () at /usr/lib64/libtaskmanager.so.5
#12 0x00007fb653dda0b7 in  () at /usr/lib64/libtaskmanager.so.5
#13 0x00007fb74d85a851 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#14 0x00007fb653de1ab8 in TaskManager::AbstractGroupableItem::changed(QFlags<TaskManager::TaskChange>) () at /usr/lib64/libtaskmanager.so.5
#15 0x00007fb653de27cb in  () at /usr/lib64/libtaskmanager.so.5
#16 0x00007fb74d85a851 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#17 0x00007fb653de1be8 in TaskManager::Task::changed(QFlags<TaskManager::TaskChange>) () at /usr/lib64/libtaskmanager.so.5
#18 0x00007fb653dc3da6 in TaskManager::Task::setActive(bool) () at /usr/lib64/libtaskmanager.so.5
#19 0x00007fb653dd577c in TaskManager::TaskManager::activeWindowChanged(unsigned long long) () at /usr/lib64/libtaskmanager.so.5
#20 0x00007fb653dd777c in  () at /usr/lib64/libtaskmanager.so.5
#21 0x00007fb74d85a851 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#22 0x00007fb7503d8e92 in KWindowSystem::activeWindowChanged(unsigned long long) () at /usr/lib64/libKF5WindowSystem.so.5
#23 0x00007fb7503c2b44 in  () at /usr/lib64/libKF5WindowSystem.so.5
#24 0x00007fb74d8281a0 in QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) () at /usr/lib64/libQt5Core.so.5
#25 0x00007fb73f3dcd3d in  () at /usr/lib64/qt5/plugins/platforms/libqxcb.so
#26 0x00007fb73f3de09b in  () at /usr/lib64/qt5/plugins/platforms/libqxcb.so
#27 0x00007fb74d85b656 in QObject::event(QEvent*) () at /usr/lib64/libQt5Core.so.5
#28 0x00007fb74eb80b5c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#29 0x00007fb74eb85a26 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#30 0x00007fb74d82afd5 in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#31 0x00007fb74d82ce6f in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib64/libQt5Core.so.5
#32 0x00007fb74d882ea3 in  () at /usr/lib64/libQt5Core.so.5
#33 0x00007fb7494cdc74 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#34 0x00007fb7494cdec8 in  () at /usr/lib64/libglib-2.0.so.0
#35 0x00007fb7494cdf6c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#36 0x00007fb74d88231c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#37 0x00007fb74d828f2b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#38 0x00007fb74d8305b6 in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#39 0x0000000000433278 in main ()

Reported using DrKonqi