Application: systemsettings5 (5.16.4)

Qt Version: 5.12.3
Frameworks Version: 5.61.0
Operating System: Linux 5.0.0-25-generic x86_64
Distribution: KDE neon User Edition 5.16

-- Information about the crash:
- What I was doing when the application crashed:
I was looking at keyboard layouts; I'm Italian, but with a US International keyboard layout. I was wondering if there was already a keyboard map with accented vowels, needed when I writein Italian.

- Custom settings of the application:
I selected the "International Phonetic Alphabet" layout, then click to see the preview.
A popup dialog said "I can't show the preview; I close it, than it apeears aghain and again, endlessly

The crash can be reproduced every time.

-- Backtrace:
Application: System Settings (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7ff4c4bdb680 (LWP 7813))]

Thread 4 (Thread 0x7ff49052f700 (LWP 7818)):
#0  0x00007ffd4a9dd6ae in ?? ()
#1  0x00007ff4c015fea6 in __GI___clock_gettime (clock_id=clock_id@entry=1, tp=tp@entry=0x7ff49052eab0) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007ff4c0a866b1 in qt_clock_gettime (ts=0x7ff49052eab0, clock=<optimized out>) at kernel/qelapsedtimer_unix.cpp:111
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at kernel/qelapsedtimer_unix.cpp:166
#4  qt_gettime () at kernel/qelapsedtimer_unix.cpp:175
#5  0x00007ff4c0a84ee9 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7ff488004cf0) at kernel/qtimerinfo_unix.cpp:91
#6  0x00007ff4c0a854c5 in QTimerInfoList::timerWait (this=0x7ff488004cf0, tm=...) at kernel/qtimerinfo_unix.cpp:388
#7  0x00007ff4c0a86b0e in timerSourcePrepareHelper (timeout=0x7ff49052eb74, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:132
#8  timerSourcePrepare (source=<optimized out>, timeout=0x7ff49052eb74) at kernel/qeventdispatcher_glib.cpp:165
#9  0x00007ff4b91a2b28 in g_main_context_prepare () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007ff4b91a34fb in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007ff4b91a36dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007ff4c0a86dcb in QEventDispatcherGlib::processEvents (this=0x7ff488000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#13 0x00007ff4c0a2803a in QEventLoop::exec (this=this@entry=0x7ff49052ed40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#14 0x00007ff4c084f4ca in QThread::exec (this=<optimized out>) at thread/qthread.cpp:531
#15 0x00007ff4be605115 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#16 0x00007ff4c0850c72 in QThreadPrivate::start (arg=0x5620e851f690) at thread/qthread_unix.cpp:361
#17 0x00007ff4bb5626db in start_thread (arg=0x7ff49052f700) at pthread_create.c:463
#18 0x00007ff4c015088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7ff4996c8700 (LWP 7817)):
#0  0x00007ff4c0143bf9 in __GI___poll (fds=0x7ff494004a00, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ff4b91a35c9 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff4b91a36dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff4c0a86dcb in QEventDispatcherGlib::processEvents (this=0x7ff494000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007ff4c0a2803a in QEventLoop::exec (this=this@entry=0x7ff4996c7d40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#5  0x00007ff4c084f4ca in QThread::exec (this=<optimized out>) at thread/qthread.cpp:531
#6  0x00007ff4be605115 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007ff4c0850c72 in QThreadPrivate::start (arg=0x5620e8308340) at thread/qthread_unix.cpp:361
#8  0x00007ff4bb5626db in start_thread (arg=0x7ff4996c8700) at pthread_create.c:463
#9  0x00007ff4c015088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7ff4a9424700 (LWP 7815)):
#0  0x00007ff4c0143bf9 in __GI___poll (fds=0x7ff4a4004db0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ff4b91a35c9 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff4b91a36dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff4c0a86dcb in QEventDispatcherGlib::processEvents (this=0x7ff4a4000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007ff4c0a2803a in QEventLoop::exec (this=this@entry=0x7ff4a9423d30, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#5  0x00007ff4c084f4ca in QThread::exec (this=<optimized out>) at thread/qthread.cpp:531
#6  0x00007ff4c0ef5015 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007ff4c0850c72 in QThreadPrivate::start (arg=0x7ff4c116cd80) at thread/qthread_unix.cpp:361
#8  0x00007ff4bb5626db in start_thread (arg=0x7ff4a9424700) at pthread_create.c:463
#9  0x00007ff4c015088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7ff4c4bdb680 (LWP 7813)):
[KCrash Handler]
#6  0x0000000000000000 in ?? ()
#7  0x00007ff4c127e82d in QGuiApplicationPrivate::processActivatedEvent (e=0x5620e92a1c50) at kernel/qguiapplication.cpp:2291
#8  0x00007ff4c128345d in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x5620e92a1c50) at kernel/qguiapplication.cpp:1858
#9  0x00007ff4c125bb4b in QWindowSystemInterface::sendWindowSystemEvents (flags=flags@entry=...) at kernel/qwindowsysteminterface.cpp:1151
#10 0x00007ff4b3b3a59a in xcbSourceDispatch (source=<optimized out>) at qxcbeventdispatcher.cpp:105
#11 0x00007ff4b91a3417 in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007ff4b91a3650 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#13 0x00007ff4b91a36dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#14 0x00007ff4c0a86daf in QEventDispatcherGlib::processEvents (this=0x5620e7fcfc50, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#15 0x00007ff4c0a2803a in QEventLoop::exec (this=this@entry=0x7ffd4a9c3ba0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#16 0x00007ff4c1ca6097 in QDialog::exec (this=this@entry=0x7ffd4a9c3c50) at dialogs/qdialog.cpp:602
#17 0x00007ff48d3a567e in KCMKeyboardWidget::addLayout (this=0x5620e91b15a0) at ./kcms/keyboard/kcm_keyboard_widget.cpp:236
#18 0x00007ff4c0a5998f in QtPrivate::QSlotObjectBase::call (a=0x7ffd4a9c3e30, r=0x5620e91b15a0, this=0x5620e9134590) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:394
#19 QMetaObject::activate (sender=sender@entry=0x5620e90c9590, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x7ffd4a9c3e30) at kernel/qobject.cpp:3776
#20 0x00007ff4c0a59f47 in QMetaObject::activate (sender=sender@entry=0x5620e90c9590, m=m@entry=0x7ff4c218d840 <QAbstractButton::staticMetaObject>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x7ffd4a9c3e30) at kernel/qobject.cpp:3648
#21 0x00007ff4c1b9c202 in QAbstractButton::clicked (this=this@entry=0x5620e90c9590, _t1=<optimized out>) at .moc/moc_qabstractbutton.cpp:312
#22 0x00007ff4c1b9c41a in QAbstractButtonPrivate::emitClicked (this=0x5620e9a21960) at widgets/qabstractbutton.cpp:414
#23 0x00007ff4c1b9d7fa in QAbstractButtonPrivate::click (this=0x5620e9a21960) at widgets/qabstractbutton.cpp:407
#24 0x00007ff4c1b9d9ed in QAbstractButton::mouseReleaseEvent (this=0x5620e90c9590, e=0x7ffd4a9c43a0) at widgets/qabstractbutton.cpp:1011
#25 0x00007ff4c1af49c8 in QWidget::event (this=0x5620e90c9590, event=0x7ffd4a9c43a0) at kernel/qwidget.cpp:9322
#26 0x00007ff4c1ab465c in QApplicationPrivate::notify_helper (this=this@entry=0x5620e7f66900, receiver=receiver@entry=0x5620e90c9590, e=e@entry=0x7ffd4a9c43a0) at kernel/qapplication.cpp:3736
#27 0x00007ff4c1abca58 in QApplication::notify (this=<optimized out>, receiver=0x5620e90c9590, e=0x7ffd4a9c43a0) at kernel/qapplication.cpp:3197
#28 0x00007ff4c0a29d18 in QCoreApplication::notifyInternal2 (receiver=0x5620e90c9590, event=0x7ffd4a9c43a0) at kernel/qcoreapplication.cpp:1060
#29 0x00007ff4c0a29efe in QCoreApplication::sendSpontaneousEvent (receiver=receiver@entry=0x5620e90c9590, event=event@entry=0x7ffd4a9c43a0) at kernel/qcoreapplication.cpp:1462
#30 0x00007ff4c1abb05f in QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x5620e90c9590, event=event@entry=0x7ffd4a9c43a0, alienWidget=0x5620e90c9590, nativeWidget=0x5620e7fd1e40, buttonDown=buttonDown@entry=0x7ff4c21b78d0 <qt_button_down>, lastMouseReceiver=..., spontaneous=true, onlyDispatchEnterLeave=false) at kernel/qapplication.cpp:2683
#31 0x00007ff4c1b0f8a1 in QWidgetWindow::handleMouseEvent (this=this@entry=0x5620e80ecff0, event=event@entry=0x7ffd4a9c4830) at kernel/qwidgetwindow.cpp:662
#32 0x00007ff4c1b126fa in QWidgetWindow::event (this=0x5620e80ecff0, event=0x7ffd4a9c4830) at kernel/qwidgetwindow.cpp:281
#33 0x00007ff4c1ab465c in QApplicationPrivate::notify_helper (this=this@entry=0x5620e7f66900, receiver=receiver@entry=0x5620e80ecff0, e=e@entry=0x7ffd4a9c4830) at kernel/qapplication.cpp:3736
#34 0x00007ff4c1abbb90 in QApplication::notify (this=0x7ffd4a9c4cb0, receiver=0x5620e80ecff0, e=0x7ffd4a9c4830) at kernel/qapplication.cpp:3483
#35 0x00007ff4c0a29d18 in QCoreApplication::notifyInternal2 (receiver=0x5620e80ecff0, event=0x7ffd4a9c4830) at kernel/qcoreapplication.cpp:1060
#36 0x00007ff4c0a29efe in QCoreApplication::sendSpontaneousEvent (receiver=receiver@entry=0x5620e80ecff0, event=event@entry=0x7ffd4a9c4830) at kernel/qcoreapplication.cpp:1462
#37 0x00007ff4c12821fb in QGuiApplicationPrivate::processMouseEvent (e=0x5620e9a3e9b0) at kernel/qguiapplication.cpp:2102
#38 0x00007ff4c1283365 in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x5620e9a3e9b0) at kernel/qguiapplication.cpp:1837
#39 0x00007ff4c125bb4b in QWindowSystemInterface::sendWindowSystemEvents (flags=flags@entry=...) at kernel/qwindowsysteminterface.cpp:1151
#40 0x00007ff4b3b3a59a in xcbSourceDispatch (source=<optimized out>) at qxcbeventdispatcher.cpp:105
#41 0x00007ff4b91a3417 in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#42 0x00007ff4b91a3650 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#43 0x00007ff4b91a36dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#44 0x00007ff4c0a86daf in QEventDispatcherGlib::processEvents (this=0x5620e7fcfc50, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#45 0x00007ff4c0a2803a in QEventLoop::exec (this=this@entry=0x7ffd4a9c4bd0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#46 0x00007ff4c0a31170 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1363
#47 0x00005620e7559218 in main (argc=<optimized out>, argv=<optimized out>) at ./app/main.cpp:71

Possible duplicates by query: bug 405261, bug 404967.

Reported using DrKonqi