Created attachment 118813 [details]
error report of baloorunner

SUMMARY
Application: baloorunner (baloorunner), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f8ed8f19800 (LWP 12568))]

Thread 3 (Thread 0x7f8ed4d9e700 (LWP 12570)):
#0  0x00007f8edeb056d9 in __GI___poll (fds=0x7f8ec8013f00, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f8edcc00e46 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8edcc00f6c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8edf02815b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f8edefd516b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8edee240b6 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f8edfef6545 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f8edee2dc87 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f8eddd4a164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#9  0x00007f8edeb11def in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f8ed748c700 (LWP 12569)):
#0  0x00007f8edeb056d9 in __GI___poll (fds=0x7f8ed748bcb8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f8edc188917 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f8edc18a53a in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f8ed8851159 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f8edee2dc87 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8eddd4a164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#6  0x00007f8edeb11def in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f8ed8f19800 (LWP 12568)):
[KCrash Handler]
#6  __memmove_sse2_unaligned_erms () at ../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S:428
#7  0x00007f8edee30574 in QByteArray::QByteArray(char const*, int) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f8ede86afcf in ?? () from /usr/lib/x86_64-linux-gnu/libKF5BalooEngine.so.5
#9  0x00007f8ede86b343 in Baloo::PostingDB::prefixIter(QByteArray const&) () from /usr/lib/x86_64-linux-gnu/libKF5BalooEngine.so.5
#10 0x00007f8ede872408 in Baloo::Transaction::postingIterator(Baloo::EngineQuery const&) const () from /usr/lib/x86_64-linux-gnu/libKF5BalooEngine.so.5
#11 0x00007f8ee00e8e8c in ?? () from /usr/lib/x86_64-linux-gnu/libKF5Baloo.so.5
#12 0x00007f8ee00e80ed in ?? () from /usr/lib/x86_64-linux-gnu/libKF5Baloo.so.5
#13 0x00007f8ee00e91b8 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5Baloo.so.5
#14 0x00007f8ee00d8010 in Baloo::Query::exec() () from /usr/lib/x86_64-linux-gnu/libKF5Baloo.so.5
#15 0x000055ae2eccdd54 in ?? ()
#16 0x000055ae2eccee37 in ?? ()
#17 0x00007f8edefff830 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f8edf00b407 in QTimer::timeout(QTimer::QPrivateSignal) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f8edeffff4b in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f8edf9e74a1 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00007f8edf9eeae0 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#22 0x00007f8edefd6499 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007f8edf027558 in QTimerInfoList::activateTimers() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007f8edf027db4 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f8edcc00c3e in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007f8edcc00ed8 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007f8edcc00f6c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x00007f8edf028143 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007f8ed88e2e51 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#30 0x00007f8edefd516b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007f8edefdd2e2 in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x000055ae2eccb92f in ?? ()
#33 0x00007f8edea1b09b in __libc_start_main (main=0x55ae2eccb8c0, argc=1, argv=0x7ffe516c8398, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe516c8388) at ../csu/libc-start.c:308
#34 0x000055ae2eccb9aa in _start ()
[Inferior 1 (process 12568) detached]


STEPS TO REPRODUCE
1. 
2. 
3. 

OBSERVED RESULT


EXPECTED RESULT


SOFTWARE/OS VERSIONS Ubuntu 18.10 (Linux dev-Aspire-4820T 5.0.1-050001-generic #201903100732 SMP Sun Mar 10 07:33:53 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux)
Windows: 
MacOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 5.15.3
KDE Frameworks Version: 5.54.0
Qt Version: 5.11.1

ADDITIONAL INFORMATION