Comment 37 for bug 1770044

I had the same issue on
Fedora 25
kernel: 4.10.10-200.fc25.x86_64
KDE Plasma: 5.9.4
KDE Frameworks: 5.33.0
Qt: 5.7.1

Backtrace (sorry, no debug symbols):
#0 0x00007fff291c9d86 in JobModel::updateJob(int, KCupsJob const&) () at /lib64/libkcupslib.so
#1 0x00007fff291cc137 in JobModel::getJobFinished() () at /lib64/libkcupslib.so
#2 0x00007fff291d2335 in JobModel::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) [clone .part.7] () at /lib64/libkcupslib.so
#3 0x00007ffff1d717e9 in QObject::event(QEvent*) () at /lib64/libQt5Core.so.5
#4 0x00007ffff2615ecc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#5 0x00007ffff261d671 in QApplication::notify(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#6 0x00007ffff1d496fa in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib64/libQt5Core.so.5
#7 0x00007ffff1d4bde0 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /lib64/libQt5Core.so.5
#8 0x00007ffff1d97653 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () at /lib64/libQt5Core.so.5
#9 0x00007fffe9ae4e52 in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#10 0x00007fffe9ae51d0 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#11 0x00007fffe9ae527c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#12 0x00007ffff1d976cf in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#13 0x00007ffff1d4868a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#14 0x00007ffff1d5018c in QCoreApplication::exec() () at /lib64/libQt5Core.so.5
#15 0x0000555555571192 in main ()

Workaround:
temporary remove print manager until it's fixed:
# dnf remove kde-print-manager kde-print-manager-libs