Application: systemsettings5 (5.9.5)

Qt Version: 5.7.1
Frameworks Version: 5.31.0
Operating System: Linux 4.10.0-33-generic x86_64
Distribution: Ubuntu 17.04

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

I changed the Application Color Scheme from Breeze to something else then back to Breeze. On clicking "Apply, it crashed.

The crash does not seem to be reproducible.

-- 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 0x7f013aea78c0 (LWP 27607))]

Thread 6 (Thread 0x7f00fab43700 (LWP 27615)):
#0  0x00007f0130e11ef4 in g_mutex_unlock () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f0130dcc48e in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0130dcc68c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f01375620bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f013750bbea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f0137339f83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f0135684df5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f013733ec38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f0132f2f6da in start_thread (arg=0x7f00fab43700) at pthread_create.c:456
#9  0x00007f0136c4bd7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 5 (Thread 0x7f0107694700 (LWP 27614)):
#0  0x00007f0130dcba25 in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f0130dcc49b in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0130dcc68c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f01375620bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f013750bbea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f0137339f83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f0135684df5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f013733ec38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f0132f2f6da in start_thread (arg=0x7f0107694700) at pthread_create.c:456
#9  0x00007f0136c4bd7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 4 (Thread 0x7f011157c700 (LWP 27613)):
#0  0x00007f0130e11ef4 in g_mutex_unlock () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f0130dcc52a in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0130dcc68c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f01375620bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f013750bbea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f0137339f83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f0135684df5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f013733ec38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f0132f2f6da in start_thread (arg=0x7f011157c700) at pthread_create.c:456
#9  0x00007f0136c4bd7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 3 (Thread 0x7f011fb68700 (LWP 27610)):
#0  0x00007f0136c3fd8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f0130dcc576 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0130dcc68c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f01375620bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f013750bbea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f0137339f83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f0137e655d5 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f013733ec38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f0132f2f6da in start_thread (arg=0x7f011fb68700) at pthread_create.c:456
#9  0x00007f0136c4bd7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 2 (Thread 0x7f01287ec700 (LWP 27609)):
#0  0x00007f0136c3fd8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f01337a6c62 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f01337a88d7 in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f012b376ef9 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f013733ec38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f0132f2f6da in start_thread (arg=0x7f01287ec700) at pthread_create.c:456
#6  0x00007f0136c4bd7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 1 (Thread 0x7f013aea78c0 (LWP 27607)):
[KCrash Handler]
#6  0x00007f013a921a39 in  () at /usr/lib/x86_64-linux-gnu/libKF5KCMUtils.so.5
#7  0x00007f0137539afe in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f01388ce825 in QGuiApplication::paletteChanged(QPalette const&) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#9  0x00007f01273774a5 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/platformthemes/KDEPlasmaPlatformTheme.so
#10 0x00007f0127384315 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/platformthemes/KDEPlasmaPlatformTheme.so
#11 0x00007f0137e6f570 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#12 0x00007f013753a639 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f013906b35c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#14 0x00007f0139072b21 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007f013750dc00 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007f013751039d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f0137561c93 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f0130dcc377 in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007f0130dcc5e0 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f0130dcc68c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f013756209f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007f013750bbea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007f013751433c in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00005561792c832a in  ()
#25 0x00007f0136b633f1 in __libc_start_main (main=0x5561792c7f50, argc=1, argv=0x7fff0a2269d8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff0a2269c8) at ../csu/libc-start.c:291
#26 0x00005561792c83aa in _start ()

Reported using DrKonqi