Application: systemsettings5 (5.3.0)

Qt Version: 5.4.1
Operating System: Linux 3.19.0-16-generic x86_64
Distribution: Ubuntu 15.04

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

After defining new font sizes and weights, hitting Apply caused this crash. I did not report an earlier and probably identical crash applying a new DPI setting.

-- 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 0x7f14c5e94780 (LWP 2321))]

Thread 4 (Thread 0x7f14b560f700 (LWP 2322)):
#0  0x00007f14c25fb8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f14c0915b72 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f14c091764f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f14b7b5a099 in QXcbEventReader::run (this=0xde9f50) at qxcbconnection.cpp:1105
#4  0x00007f14c2c7cb0e in QThreadPrivate::start (arg=0xde9f50) at thread/qthread_unix.cpp:337
#5  0x00007f14bf82f6aa in start_thread (arg=0x7f14b560f700) at pthread_create.c:333
#6  0x00007f14c2606eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f14a5a0a700 (LWP 2325)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f14a8a1fe83 in ?? () from /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so
#2  0x00007f14a8a1f6e7 in ?? () from /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so
#3  0x00007f14bf82f6aa in start_thread (arg=0x7f14a5a0a700) at pthread_create.c:333
#4  0x00007f14c2606eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f14a5209700 (LWP 2326)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f14a8a1fe83 in ?? () from /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so
#2  0x00007f14a8a1f6e7 in ?? () from /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so
#3  0x00007f14bf82f6aa in start_thread (arg=0x7f14a5209700) at pthread_create.c:333
#4  0x00007f14c2606eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f14c5e94780 (LWP 2321)):
[KCrash Handler]
#6  0x00007f149be73fcc in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#7  0x00007f14c5e595ba in call_init (l=<optimized out>, argc=argc@entry=1, argv=argv@entry=0x7ffde804dec8, env=env@entry=0x7ffde804ded8) at dl-init.c:72
#8  0x00007f14c5e596cb in call_init (env=<optimized out>, argv=<optimized out>, argc=<optimized out>, l=<optimized out>) at dl-init.c:30
#9  _dl_init (main_map=main_map@entry=0x15d46e0, argc=1, argv=0x7ffde804dec8, env=0x7ffde804ded8) at dl-init.c:120
#10 0x00007f14c5e5e587 in dl_open_worker (a=a@entry=0x7ffde804b388) at dl-open.c:579
#11 0x00007f14c5e59464 in _dl_catch_error (objname=objname@entry=0x7ffde804b378, errstring=errstring@entry=0x7ffde804b380, mallocedp=mallocedp@entry=0x7ffde804b377, operate=operate@entry=0x7f14c5e5e0a0 <dl_open_worker>, args=args@entry=0x7ffde804b388) at dl-error.c:187
#12 0x00007f14c5e5d9a3 in _dl_open (file=0x1510280 "/usr/lib/vlc/plugins/gui/libqt4_plugin.so", mode=-2147483647, caller_dlopen=0x7f14a13a1c0f, nsid=-2, argc=<optimized out>, argv=<optimized out>, env=0x7ffde804ded8) at dl-open.c:663
#13 0x00007f14bdba1fc9 in dlopen_doit (a=a@entry=0x7ffde804b5a0) at dlopen.c:66
#14 0x00007f14c5e59464 in _dl_catch_error (objname=0xdd50d0, errstring=0xdd50d8, mallocedp=0xdd50c8, operate=0x7f14bdba1f70 <dlopen_doit>, args=0x7ffde804b5a0) at dl-error.c:187
#15 0x00007f14bdba262d in _dlerror_run (operate=operate@entry=0x7f14bdba1f70 <dlopen_doit>, args=args@entry=0x7ffde804b5a0) at dlerror.c:163
#16 0x00007f14bdba2061 in __dlopen (file=<optimized out>, mode=<optimized out>) at dlopen.c:87
#17 0x00007f14a13a1c0f in ?? () from /usr/lib/libvlccore.so.8
#18 0x00007f14a13868bb in ?? () from /usr/lib/libvlccore.so.8
#19 0x00007f14a1386be8 in ?? () from /usr/lib/libvlccore.so.8
#20 0x00007f14a1386b44 in ?? () from /usr/lib/libvlccore.so.8
#21 0x00007f14a13870c4 in ?? () from /usr/lib/libvlccore.so.8
#22 0x00007f14a1387691 in ?? () from /usr/lib/libvlccore.so.8
#23 0x00007f14a130d44d in libvlc_InternalInit () from /usr/lib/libvlccore.so.8
#24 0x00007f14a10e335b in libvlc_new () from /usr/lib/libvlc.so.5
#25 0x00007f14a16351cb in LibVLC::init () at ../../src/utils/libvlc.cpp:117
#26 0x00007f14a1612878 in Phonon::VLC::Backend::Backend (this=0x14c6940, parent=<optimized out>) at ../../src/backend.cpp:90
#27 0x00007f14a1638fd8 in qt_plugin_instance () at moc_backend.cpp:237
#28 0x00007f14c2ea3d9f in QPluginLoader::instance (this=0x7ffde804bec0) at plugin/qpluginloader.cpp:192
#29 0x00007f14b40300e8 in ?? () from /usr/lib/x86_64-linux-gnu/libphonon4qt5.so.4
#30 0x00007f14b4031d0e in ?? () from /usr/lib/x86_64-linux-gnu/libphonon4qt5.so.4
#31 0x00007f14b4032641 in ?? () from /usr/lib/x86_64-linux-gnu/libphonon4qt5.so.4
#32 0x00007f14b4032ebd in Phonon::Factory::backend(bool) () from /usr/lib/x86_64-linux-gnu/libphonon4qt5.so.4
#33 0x00007f14b40334d3 in ?? () from /usr/lib/x86_64-linux-gnu/libphonon4qt5.so.4
#34 0x00007f14b4028a54 in ?? () from /usr/lib/x86_64-linux-gnu/libphonon4qt5.so.4
#35 0x00007f14b402609e in ?? () from /usr/lib/x86_64-linux-gnu/libphonon4qt5.so.4
#36 0x00007f14b44faeaa in ?? () from /usr/lib/x86_64-linux-gnu/libKF5Notifications.so.5
#37 0x00007f14b44deb6f in ?? () from /usr/lib/x86_64-linux-gnu/libKF5Notifications.so.5
#38 0x00007f14b44dd2d8 in KNotification::sendEvent() () from /usr/lib/x86_64-linux-gnu/libKF5Notifications.so.5
#39 0x00007f14c2eec73a in QObject::event (this=0x146d300, e=<optimized out>) at kernel/qobject.cpp:1245
#40 0x00007f14c3ca6b2c in QApplicationPrivate::notify_helper (this=0xdd0b10, receiver=0x146d300, e=0x13a8320) at kernel/qapplication.cpp:3720
#41 0x00007f14c3cac000 in QApplication::notify (this=0x7ffde804dd90, receiver=0x146d300, e=0x13a8320) at kernel/qapplication.cpp:3503
#42 0x00007f14c2ebac2b in QCoreApplication::notifyInternal (this=0x7ffde804dd90, receiver=0x146d300, event=event@entry=0x13a8320) at kernel/qcoreapplication.cpp:935
#43 0x00007f14c2ebcc9b in sendEvent (event=0x13a8320, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:228
#44 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0xdcfd60) at kernel/qcoreapplication.cpp:1552
#45 0x00007f14c2ebd298 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1410
#46 0x00007f14c2f13843 in postEventSourceDispatch (s=0xe27650) at kernel/qeventdispatcher_glib.cpp:271
#47 0x00007f14bf310c3d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#48 0x00007f14bf310f20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#49 0x00007f14bf310fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#50 0x00007f14c2f13c57 in QEventDispatcherGlib::processEvents (this=0xe35d70, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#51 0x00007f14c2eb83e2 in QEventLoop::exec (this=this@entry=0x7ffde804c9d0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#52 0x00007f14c3ea84b5 in QDialog::exec (this=0x11946c0) at dialogs/qdialog.cpp:541
#53 0x00007f14c429da5c in KMessageBox::createKMessageBox(QDialog*, QDialogButtonBox*, QIcon const&, QString const&, QStringList const&, QString const&, bool*, QFlags<KMessageBox::Option>, QString const&, QMessageBox::Icon) () from /usr/lib/x86_64-linux-gnu/libKF5WidgetsAddons.so.5
#54 0x00007f14c429dd06 in KMessageBox::createKMessageBox(QDialog*, QDialogButtonBox*, QMessageBox::Icon, QString const&, QStringList const&, QString const&, bool*, QFlags<KMessageBox::Option>, QString const&) () from /usr/lib/x86_64-linux-gnu/libKF5WidgetsAddons.so.5
#55 0x00007f14c42a1af8 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5WidgetsAddons.so.5
#56 0x00007f14c42a1ce1 in KMessageBox::information(QWidget*, QString const&, QString const&, QString const&, QFlags<KMessageBox::Option>) () from /usr/lib/x86_64-linux-gnu/libKF5WidgetsAddons.so.5
#57 0x00007f14a238723f in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/kcm_fonts.so
#58 0x00007f14c5a0f077 in KCModuleProxy::save() () from /usr/lib/x86_64-linux-gnu/libKF5KCMUtils.so.5
#59 0x00007f14c5c3fc13 in ModuleView::moduleSave(KCModuleProxy*) () from /usr/lib/x86_64-linux-gnu/libsystemsettingsview.so.3
#60 0x00007f14c5c43585 in ?? () from /usr/lib/x86_64-linux-gnu/libsystemsettingsview.so.3
#61 0x00007f14c2eeb9c9 in QMetaObject::activate (sender=sender@entry=0x1078320, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x7ffde804d000) at kernel/qobject.cpp:3716
#62 0x00007f14c2eec057 in QMetaObject::activate (sender=sender@entry=0x1078320, m=m@entry=0x7f14c41e0a60 <QAbstractButton::staticMetaObject>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x7ffde804d000) at kernel/qobject.cpp:3582
#63 0x00007f14c4055012 in QAbstractButton::clicked (this=this@entry=0x1078320, _t1=false) at .moc/moc_qabstractbutton.cpp:298
#64 0x00007f14c3da2675 in QAbstractButtonPrivate::emitClicked (this=0x1078360) at widgets/qabstractbutton.cpp:534
#65 0x00007f14c3da3299 in QAbstractButtonPrivate::click (this=0x1078360) at widgets/qabstractbutton.cpp:527
#66 0x00007f14c3da3454 in QAbstractButton::mouseReleaseEvent (this=0x1078320, e=0x7ffde804d4c0) at widgets/qabstractbutton.cpp:1132
#67 0x00007f14c3cea1e8 in QWidget::event (this=0x1078320, event=0x7ffde804d4c0) at kernel/qwidget.cpp:9022
#68 0x00007f14c3ca6b2c in QApplicationPrivate::notify_helper (this=0xdd0b10, receiver=0x1078320, e=0x7ffde804d4c0) at kernel/qapplication.cpp:3720
#69 0x00007f14c3cac8eb in QApplication::notify (this=0x7ffde804d200, receiver=0x7ffde804d220, e=0x7ffde804d4c0) at kernel/qapplication.cpp:3280
#70 0x00007f14c2ebac2b in QCoreApplication::notifyInternal (this=0x7ffde804dd90, receiver=receiver@entry=0x1078320, event=event@entry=0x7ffde804d4c0) at kernel/qcoreapplication.cpp:935
#71 0x00007f14c3cab3da in sendSpontaneousEvent (event=0x7ffde804d4c0, receiver=0x1078320) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#72 QApplicationPrivate::sendMouseEvent (receiver=0x1078320, event=0x7ffde804d4c0, alienWidget=0x1078320, nativeWidget=0x1077ab0, buttonDown=<optimized out>, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:2751
#73 0x00007f14c3d02cc0 in QWidgetWindow::handleMouseEvent (this=0x1253b10, event=0x7ffde804d8d0) at kernel/qwidgetwindow.cpp:543
#74 0x00007f14c3d04e33 in QWidgetWindow::event (this=0x1253b10, event=0x7ffde804d8d0) at kernel/qwidgetwindow.cpp:210
#75 0x00007f14c3ca6b2c in QApplicationPrivate::notify_helper (this=0xdd0b10, receiver=0x1253b10, e=0x7ffde804d8d0) at kernel/qapplication.cpp:3720
#76 0x00007f14c3cac000 in QApplication::notify (this=0x7ffde804dd90, receiver=0x1253b10, e=0x7ffde804d8d0) at kernel/qapplication.cpp:3503
#77 0x00007f14c2ebac2b in QCoreApplication::notifyInternal (this=0x7ffde804dd90, receiver=0x1253b10, event=0x7ffde804d8d0) at kernel/qcoreapplication.cpp:935
#78 0x00007f14c36e9f82 in sendSpontaneousEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#79 QGuiApplicationPrivate::processMouseEvent (e=0x1293190) at kernel/qguiapplication.cpp:1774
#80 0x00007f14c36ebb45 in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x1293190) at kernel/qguiapplication.cpp:1576
#81 0x00007f14c36d034f in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:572
#82 0x00007f14b7b84590 in userEventSourceDispatch (source=<optimized out>) at eventdispatchers/qeventdispatcher_glib.cpp:70
#83 0x00007f14bf310c3d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#84 0x00007f14bf310f20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#85 0x00007f14bf310fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#86 0x00007f14c2f13c57 in QEventDispatcherGlib::processEvents (this=0xe35d70, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#87 0x00007f14c2eb83e2 in QEventLoop::exec (this=this@entry=0x7ffde804dc70, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#88 0x00007f14c2ec002c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#89 0x000000000040ef5b in main ()

Reported using DrKonqi