Bug 354631

Application: systemsettings5 (5.4.1)

Qt Version: 5.4.2
Operating System: Linux 4.2.0-16-generic x86_64
Distribution: Ubuntu 15.10

-- Information about the crash:
- What I was doing when the application crashed:
While configure the system, i close the application, but when reopening, this crashed.  At the same time, in background, run the update apllication
- Unusual behavior I noticed:

- Custom settings of the application:

-- Backtrace:
Application: Configurări de sistem (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f50d14b2800 (LWP 2035))]

Thread 6 (Thread 0x7f50bfd3f700 (LWP 2038)):
#0  0x00007f50cdc4b8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f50cb95bbd2 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f50cb95d74f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f50c228da39 in QXcbEventReader::run (this=0x2271dd0) at qxcbconnection.cpp:1105
#4  0x00007f50ce33e2be in QThreadPrivate::start (arg=0x2271dd0) at thread/qthread_unix.cpp:337
#5  0x00007f50cb0e66aa in start_thread (arg=0x7f50bfd3f700) at pthread_create.c:333
#6  0x00007f50cdc56eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f50b0cdb700 (LWP 2042)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f50b40cc4da in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#2  0x00007f50b40cbc17 in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#3  0x00007f50cb0e66aa in start_thread (arg=0x7f50b0cdb700) at pthread_create.c:333
#4  0x00007f50cdc56eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f50ac230700 (LWP 2183)):
#0  0x00007f50cdc4b8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f50cabc71ec in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f50cabc72fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f50ce57529b in QEventDispatcherGlib::processEvents (this=0x7f50a40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f50ce51b75a in QEventLoop::exec (this=this@entry=0x7f50ac22fda0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f50ce3393d4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f50cccc2f85 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f50ce33e2be in QThreadPrivate::start (arg=0x26e5420) at thread/qthread_unix.cpp:337
#8  0x00007f50cb0e66aa in start_thread (arg=0x7f50ac230700) at pthread_create.c:333
#9  0x00007f50cdc56eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f50a1e13700 (LWP 25525)):
#0  0x00007f50cac0b884 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f50cabc6a59 in g_main_context_query () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f50cabc7167 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f50cabc72fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f50cabc7339 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f50cabed965 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f50cb0e66aa in start_thread (arg=0x7f50a1e13700) at pthread_create.c:333
#7  0x00007f50cdc56eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f50a35f9700 (LWP 25526)):
#0  __libc_enable_asynccancel () at ../sysdeps/unix/sysv/linux/x86_64/cancellation.S:65
#1  0x00007f50cdc47492 in read () at ../sysdeps/unix/syscall-template.S:81
#2  0x00007f50cac0a4e0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f50cabc6cd4 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f50cabc7190 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f50cabc7572 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f50922d34c6 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#7  0x00007f50cabed965 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007f50cb0e66aa in start_thread (arg=0x7f50a35f9700) at pthread_create.c:333
#9  0x00007f50cdc56eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f50d14b2800 (LWP 2035)):
[KCrash Handler]
#6  0x00007f50cf9cc96d in QWidgetPrivate::maybeTopData (this=<optimized out>) at ../../include/QtWidgets/5.4.2/QtWidgets/private/../../../../../src/widgets/kernel/qwidget_p.h:937
#7  QWidget::windowHandle (this=0x2358320) at kernel/qwidget.cpp:2578
#8  0x00007f50cf9d3841 in QWidget::activateWindow (this=<optimized out>) at kernel/qwidget.cpp:12560
#9  0x00007f50ce54e617 in QtPrivate::QSlotObjectBase::call (a=0x7ffd220e06a0, r=0x7ffd220e10f0, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#10 QMetaObject::activate (sender=0x22dd1a0, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3702
#11 0x00007f50cec42587 in KDBusService::activateRequested(QStringList const&, QString const&) () from /usr/lib/x86_64-linux-gnu/libKF5DBusAddons.so.5
#12 0x00007f50cec3f036 in KDBusService::Activate(QMap<QString, QVariant> const&) () from /usr/lib/x86_64-linux-gnu/libKF5DBusAddons.so.5
#13 0x00007f50cec42355 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5DBusAddons.so.5
#14 0x00007f50d1600d4e in QDBusConnectionPrivate::deliverCall (this=this@entry=0x22c3e40, object=object@entry=0x22d9a30, msg=..., metaTypes=..., slotIdx=5) at qdbusintegrator.cpp:992
#15 0x00007f50d1604d5a in QDBusConnectionPrivate::activateCall (this=this@entry=0x22c3e40, object=0x22d9a30, flags=flags@entry=273, msg=...) at qdbusintegrator.cpp:898
#16 0x00007f50d16056d3 in QDBusConnectionPrivate::activateObject (this=0x22c3e40, node=..., msg=..., pathStartPos=<optimized out>) at qdbusintegrator.cpp:1460
#17 0x00007f50d160699e in QDBusActivateObjectEvent::placeMetaCall (this=0x3271a70) at qdbusintegrator.cpp:1582
#18 0x00007f50ce54f651 in QObject::event (this=0x22dd1a0, e=<optimized out>) at kernel/qobject.cpp:1245
#19 0x00007f50cf9a1b8c in QApplicationPrivate::notify_helper (this=this@entry=0x2250800, receiver=receiver@entry=0x22dd1a0, e=e@entry=0x3271a70) at kernel/qapplication.cpp:3720
#20 0x00007f50cf9a7230 in QApplication::notify (this=0x7ffd220e10f0, receiver=0x22dd1a0, e=0x3271a70) at kernel/qapplication.cpp:3503
#21 0x00007f50ce51df1b in QCoreApplication::notifyInternal (this=0x7ffd220e10f0, receiver=0x22dd1a0, event=event@entry=0x3271a70) at kernel/qcoreapplication.cpp:935
#22 0x00007f50ce520057 in QCoreApplication::sendEvent (event=0x3271a70, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:228
#23 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x224ff60) at kernel/qcoreapplication.cpp:1552
#24 0x00007f50ce520588 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1410
#25 0x00007f50ce574e73 in postEventSourceDispatch (s=0x22a94d0) at kernel/qeventdispatcher_glib.cpp:271
#26 0x00007f50cabc6ff7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007f50cabc7250 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x00007f50cabc72fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#29 0x00007f50ce57527f in QEventDispatcherGlib::processEvents (this=0x22a94b0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#30 0x00007f50ce51b75a in QEventLoop::exec (this=this@entry=0x7ffd220e0fd0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#31 0x00007f50ce5232cc in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#32 0x000000000040f04b in main ()

Reported using DrKonqi