Application: kcmshell4 (4.14.14)
KDE Platform Version: 4.14.21
Qt Version: 4.8.7
Operating System: Linux 4.4.14 x86_64
Distribution (Platform): Slackware Packages

-- Information about the crash:
- What I was doing when the application crashed:
I was changing the NTP server because the time was not correct
I entered admin password and it worked (with europe.pool.ntp.org), so the time updated. I tried to switch back to the old NTP server (pool.ntp.org), and I got a warning message in a window (error 6 or -6 if I remember well), and then the KDE crash window, but apparently nothing bad happened to Plasma

The crash does not seem to be reproducible.

-- Backtrace:
Application: Modulo di controllo di KDE (kcmshell4), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f22e670f780 (LWP 2130))]

Thread 3 (Thread 0x7f22b9c37700 (LWP 2132)):
#0  0x00007f22e323730d in poll () at /lib64/libc.so.6
#1  0x00007f22df95f954 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f22df95fcd2 in g_main_loop_run () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f22d410ca56 in  () at /usr/lib64/libgio-2.0.so.0
#4  0x00007f22df9851e5 in  () at /usr/lib64/libglib-2.0.so.0
#5  0x00007f22e4cfb684 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f22e3242efd in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f22c2438700 (LWP 2131)):
#0  0x00007f22e323730d in poll () at /lib64/libc.so.6
#1  0x00007f22df95f954 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f22df95fa5c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f22df95fa99 in  () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f22df9851e5 in  () at /usr/lib64/libglib-2.0.so.0
#5  0x00007f22e4cfb684 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f22e3242efd in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f22e670f780 (LWP 2130)):
[KCrash Handler]
#6  0x0000000002574f50 in  ()
#7  0x00007f22e50b7524 in QObject::connect(QObject const*, char const*, QObject const*, char const*, Qt::ConnectionType) () at /usr/lib64/qt/lib/libQtCore.so.4
#8  0x00007f22e50bf3ac in  () at /usr/lib64/qt/lib/libQtCore.so.4
#9  0x00007f22e50bf46e in QTimer::singleShot(int, QObject*, char const*) () at /usr/lib64/qt/lib/libQtCore.so.4
#10 0x00007f22c8124283 in  () at /usr/lib64/kde4/kcm_clock.so
#11 0x00007f22d4a813e7 in KCModuleProxy::save() () at /usr/lib64/libkcmutils.so.4
#12 0x00007f22d4a7c2e8 in  () at /usr/lib64/libkcmutils.so.4
#13 0x00007f22e50b4e30 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () at /usr/lib64/qt/lib/libQtCore.so.4
#14 0x00007f22e61cdbcf in KPushButton::authorized(KAuth::Action*) () at /usr/lib64/libkdeui.so.5
#15 0x00007f22e50b4e30 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () at /usr/lib64/qt/lib/libQtCore.so.4
#16 0x00007f22e4858532 in QAbstractButton::clicked(bool) () at /usr/lib64/qt/lib/libQtGui.so.4
#17 0x00007f22e45b0763 in  () at /usr/lib64/qt/lib/libQtGui.so.4
#18 0x00007f22e45b1954 in  () at /usr/lib64/qt/lib/libQtGui.so.4
#19 0x00007f22e45b1a44 in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () at /usr/lib64/qt/lib/libQtGui.so.4
#20 0x00007f22e424a4d0 in QWidget::event(QEvent*) () at /usr/lib64/qt/lib/libQtGui.so.4
#21 0x00007f22e41f748c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/qt/lib/libQtGui.so.4
#22 0x00007f22e41fe0c3 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/qt/lib/libQtGui.so.4
#23 0x00007f22e61028ea in KApplication::notify(QObject*, QEvent*) () at /usr/lib64/libkdeui.so.5
#24 0x00007f22e50a1c0d in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib64/qt/lib/libQtCore.so.4
#25 0x00007f22e41fd75d in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () at /usr/lib64/qt/lib/libQtGui.so.4
#26 0x00007f22e4274af9 in  () at /usr/lib64/qt/lib/libQtGui.so.4
#27 0x00007f22e4272df5 in QApplication::x11ProcessEvent(_XEvent*) () at /usr/lib64/qt/lib/libQtGui.so.4
#28 0x00007f22e429a942 in  () at /usr/lib64/qt/lib/libQtGui.so.4
#29 0x00007f22df95f787 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#30 0x00007f22df95f9b8 in  () at /usr/lib64/libglib-2.0.so.0
#31 0x00007f22df95fa5c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#32 0x00007f22e50d00ae in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/qt/lib/libQtCore.so.4
#33 0x00007f22e429a9e6 in  () at /usr/lib64/qt/lib/libQtGui.so.4
#34 0x00007f22e50a05d1 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/qt/lib/libQtCore.so.4
#35 0x00007f22e50a08e5 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/qt/lib/libQtCore.so.4
#36 0x00007f22e46ab04c in QDialog::exec() () at /usr/lib64/qt/lib/libQtGui.so.4
#37 0x00007f22cdf80586 in kdemain () at /usr/lib64/libkdeinit4_kcmshell4.so
#38 0x0000000000408c21 in  ()
#39 0x00000000004099f7 in  ()
#40 0x000000000040a13a in  ()
#41 0x0000000000405952 in  ()
#42 0x00007f22e315c7d0 in __libc_start_main () at /lib64/libc.so.6
#43 0x00000000004067b9 in _start ()

Reported using DrKonqi