Bug 360014

Application: systemsettings5 (5.4.1)

Qt Version: 5.4.2
Operating System: Linux 4.2.0-30-generic x86_64
Distribution: Ubuntu 15.10

-- Information about the crash:
Unfortunately cannot successfully tag 351785 as related for some reason in reporting GUI. So falling back to this form to submit the trace. This occurs persistently on a new Kubuntu image downloaded/installed in a new VM over the weekend.

The crash can be reproduced sometimes.

-- 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 0x7f132d0c5800 (LWP 6327))]

Thread 4 (Thread 0x7f131bc31700 (LWP 6328)):
#0  0x00007f132985988d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f1327569bd2 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f132756b74f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f131e17fa39 in QXcbEventReader::run (this=0x8e9560) at qxcbconnection.cpp:1105
#4  0x00007f1329f4c2be in QThreadPrivate::start (arg=0x8e9560) at thread/qthread_unix.cpp:337
#5  0x00007f1326cf46aa in start_thread (arg=0x7f131bc31700) at pthread_create.c:333
#6  0x00007f1329864e9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f1308094700 (LWP 6332)):
#0  0x00007f132985988d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f13267d51ec in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f13267d52fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f13267d5339 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f13267fb965 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f1326cf46aa in start_thread (arg=0x7f1308094700) at pthread_create.c:333
#6  0x00007f1329864e9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f1307893700 (LWP 6333)):
#0  0x00007f132985544d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f13268184e0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f13267d4cd4 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f13267d5190 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f13267d5572 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f130859d4c6 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#6  0x00007f13267fb965 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f1326cf46aa in start_thread (arg=0x7f1307893700) at pthread_create.c:333
#8  0x00007f1329864e9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f132d0c5800 (LWP 6327)):
[KCrash Handler]
#6  0x00007f12fc0069f8 in KAccountsUiProvider::showNewAccountDialog (this=<optimized out>) at ../../../plugins/kaccounts/kaccounts-ui-provider.cpp:247
#7  0x00007f132a15c617 in QtPrivate::QSlotObjectBase::call (a=0x7ffd9dc48000, r=0xce3560, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#8  QMetaObject::activate (sender=0xce3560, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3702
#9  0x00007f12fc0069b8 in KAccountsUiProvider::init (this=0xce3560, type=<optimized out>) at ../../../plugins/kaccounts/kaccounts-ui-provider.cpp:109
#10 0x00007f132a15c617 in QtPrivate::QSlotObjectBase::call (a=0x7ffd9dc481e0, r=0x10866e0, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#11 QMetaObject::activate (sender=sender@entry=0x10866e0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x7ffd9dc481e0) at kernel/qobject.cpp:3702
#12 0x00007f132a15cf87 in QMetaObject::activate (sender=sender@entry=0x10866e0, m=m@entry=0x7f132bac6620 <QAbstractButton::staticMetaObject>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x7ffd9dc481e0) at kernel/qobject.cpp:3582
#13 0x00007f132b940fe2 in QAbstractButton::clicked (this=this@entry=0x10866e0, _t1=false) at .moc/moc_qabstractbutton.cpp:298
#14 0x00007f132b6a7914 in QAbstractButtonPrivate::emitClicked (this=0xd9e230) at widgets/qabstractbutton.cpp:534
#15 0x00007f132b6a8df9 in QAbstractButtonPrivate::click (this=0xd9e230) at widgets/qabstractbutton.cpp:527
#16 0x00007f132b6a8f74 in QAbstractButton::mouseReleaseEvent (this=0x10866e0, e=0x7ffd9dc486b0) at widgets/qabstractbutton.cpp:1132
#17 0x00007f132b5f2188 in QWidget::event (this=0x10866e0, event=0x7ffd9dc486b0) at kernel/qwidget.cpp:9023
#18 0x00007f132b5afb8c in QApplicationPrivate::notify_helper (this=this@entry=0x8cf800, receiver=receiver@entry=0x10866e0, e=e@entry=0x7ffd9dc486b0) at kernel/qapplication.cpp:3720
#19 0x00007f132b5b5c7a in QApplication::notify (this=<optimized out>, receiver=0x10866e0, e=0x7ffd9dc486b0) at kernel/qapplication.cpp:3280
#20 0x00007f132a12bf1b in QCoreApplication::notifyInternal (this=0x7ffd9dc48f70, receiver=receiver@entry=0x10866e0, event=event@entry=0x7ffd9dc486b0) at kernel/qcoreapplication.cpp:935
#21 0x00007f132b5b46f2 in QCoreApplication::sendSpontaneousEvent (event=0x7ffd9dc486b0, receiver=0x10866e0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#22 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x10866e0, event=event@entry=0x7ffd9dc486b0, alienWidget=alienWidget@entry=0x10866e0, nativeWidget=0x9aa9e0, buttonDown=buttonDown@entry=0x7f132bad5a10 <qt_button_down>, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:2751
#23 0x00007f132b609440 in QWidgetWindow::handleMouseEvent (this=this@entry=0xa920a0, event=event@entry=0x7ffd9dc48ad0) at kernel/qwidgetwindow.cpp:543
#24 0x00007f132b60b78b in QWidgetWindow::event (this=0xa920a0, event=0x7ffd9dc48ad0) at kernel/qwidgetwindow.cpp:210
#25 0x00007f132b5afb8c in QApplicationPrivate::notify_helper (this=this@entry=0x8cf800, receiver=receiver@entry=0xa920a0, e=e@entry=0x7ffd9dc48ad0) at kernel/qapplication.cpp:3720
#26 0x00007f132b5b5230 in QApplication::notify (this=0x7ffd9dc48f70, receiver=0xa920a0, e=0x7ffd9dc48ad0) at kernel/qapplication.cpp:3503
#27 0x00007f132a12bf1b in QCoreApplication::notifyInternal (this=0x7ffd9dc48f70, receiver=receiver@entry=0xa920a0, event=event@entry=0x7ffd9dc48ad0) at kernel/qcoreapplication.cpp:935
#28 0x00007f132b0043c8 in QCoreApplication::sendSpontaneousEvent (event=0x7ffd9dc48ad0, receiver=0xa920a0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#29 QGuiApplicationPrivate::processMouseEvent (e=0xce4520) at kernel/qguiapplication.cpp:1772
#30 0x00007f132b006005 in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0xce4520) at kernel/qguiapplication.cpp:1576
#31 0x00007f132afeb5b8 in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:572
#32 0x00007f131e1ac250 in userEventSourceDispatch (source=<optimized out>) at eventdispatchers/qeventdispatcher_glib.cpp:70
#33 0x00007f13267d4ff7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007f13267d5250 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007f13267d52fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007f132a18327f in QEventDispatcherGlib::processEvents (this=0x90fc30, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#37 0x00007f132a12975a in QEventLoop::exec (this=this@entry=0x7ffd9dc48e50, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#38 0x00007f132a1312cc in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#39 0x00007f132affc00c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1510
#40 0x00007f132b5ac025 in QApplication::exec () at kernel/qapplication.cpp:2956
#41 0x000000000040f04b in main (argc=1, argv=<optimized out>) at ../../app/main.cpp:55

Possible duplicates by query: bug 357305, bug 355449, bug 354924, bug 354774.

Reported using DrKonqi