Application: systemsettings5 (5.12.4)

Qt Version: 5.10.1
Frameworks Version: 5.45.0
Operating System: Linux 4.16.5-1-rc x86_64
Distribution (Platform): Archlinux Packages

-- Information about the crash:
- What I was doing when the application crashed:

I was in the Task Manager, under system tab. All was greyed since I did not launch the settings in root, so I quitted, and it crashed during exit.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Configuration du système (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f1b881b8800 (LWP 3887))]

Thread 4 (Thread 0x7f1b3fdaf700 (LWP 3905)):
#0  0x00007f1b83bf0cd9 in poll () at /usr/lib/libc.so.6
#1  0x00007f1b7d6fa523 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f1b7d6fa8e2 in g_main_loop_run () at /usr/lib/libglib-2.0.so.0
#3  0x00007f1b45bd5348 in  () at /usr/lib/libgio-2.0.so.0
#4  0x00007f1b7d722a2a in  () at /usr/lib/libglib-2.0.so.0
#5  0x00007f1b7fd610bc in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f1b83bfb2ff in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7f1b49de5700 (LWP 3904)):
#0  0x00007f1b83bf0cd9 in poll () at /usr/lib/libc.so.6
#1  0x00007f1b7d6fa523 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f1b7d6fa63e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f1b7d6fa692 in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007f1b7d722a2a in  () at /usr/lib/libglib-2.0.so.0
#5  0x00007f1b7fd610bc in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f1b83bfb2ff in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7f1b6ba76700 (LWP 3890)):
#0  0x00007f1b7d7412d9 in g_mutex_lock () at /usr/lib/libglib-2.0.so.0
#1  0x00007f1b7d6f9a55 in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#2  0x00007f1b7d6fa44e in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007f1b7d6fa63e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007f1b8453f264 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f1b844e132b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f1b842f072e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007f1b85e5c416 in  () at /usr/lib/libQt5DBus.so.5
#8  0x00007f1b842f5acd in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f1b7fd610bc in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f1b83bfb2ff in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7f1b881b8800 (LWP 3887)):
[KCrash Handler]
#6  0x0000561822d5d8d0 in  ()
#7  0x00007f1b6f045466 in  () at /usr/lib/libKF5Notifications.so.5
#8  0x00007f1b6f045509 in  () at /usr/lib/libKF5Notifications.so.5
#9  0x00007f1b8451115d in QObjectPrivate::deleteChildren() () at /usr/lib/libQt5Core.so.5
#10 0x00007f1b8451ad2c in QObject::~QObject() () at /usr/lib/libQt5Core.so.5
#11 0x00007f1b6f01e2e9 in  () at /usr/lib/libKF5Notifications.so.5
#12 0x00007f1b83b3b8e1 in __run_exit_handlers () at /usr/lib/libc.so.6
#13 0x00007f1b83b3b9ea in  () at /usr/lib/libc.so.6
#14 0x00007f1b83b259ae in __libc_start_main () at /usr/lib/libc.so.6
#15 0x000056181af5cdba in _start ()

Reported using DrKonqi