Bug 381082

Application: systemsettings5 (5.9.4)

Qt Version: 5.7.1
Frameworks Version: 5.31.0
Operating System: Linux 4.10.0-22-generic x86_64
Distribution: Ubuntu 17.04

-- Information about the crash:
Steps to reproduce:
System Setting > Colors > change from one color schemeto another

System Settings crashed.

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 0x7fb6d7dca8c0 (LWP 26171))]

Thread 5 (Thread 0x7fb69b1b1700 (LWP 26183)):
#0  0x00007fb6d4479593 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007fb6cdd13f89 in g_main_context_check () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb6cdd14514 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb6cdd1468c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fb6d4479f2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb6d442388a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fb6d4250fe3 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fb6d259bdf5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fb6d4255c98 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fb6cfe456da in start_thread (arg=0x7fb69b1b1700) at pthread_create.c:456
#10 0x00007fb6d3b6217f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 4 (Thread 0x7fb6aa83c700 (LWP 26182)):
#0  0x00007fb6cdd59ef4 in g_mutex_unlock () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fb6cdd134be in g_main_context_acquire () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb6cdd14425 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb6cdd1468c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fb6d4479f2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb6d442388a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fb6d4250fe3 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fb6d259bdf5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fb6d4255c98 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fb6cfe456da in start_thread (arg=0x7fb6aa83c700) at pthread_create.c:456
#10 0x00007fb6d3b6217f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 3 (Thread 0x7fb6a3d59700 (LWP 26181)):
#0  0x00007fb6cdd13a03 in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fb6cdd1449b in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb6cdd1468c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb6d4479f2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fb6d442388a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb6d4250fe3 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fb6d259bdf5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fb6d4255c98 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fb6cfe456da in start_thread (arg=0x7fb6a3d59700) at pthread_create.c:456
#9  0x00007fb6d3b6217f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 2 (Thread 0x7fb6bbfff700 (LWP 26174)):
#0  0x00007fb6d3b5618d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fb6cdd14576 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb6cdd1468c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb6d4479f2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fb6d442388a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb6d4250fe3 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fb6d4d7d5c5 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007fb6d4255c98 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fb6cfe456da in start_thread (arg=0x7fb6bbfff700) at pthread_create.c:456
#9  0x00007fb6d3b6217f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 1 (Thread 0x7fb6d7dca8c0 (LWP 26171)):
[KCrash Handler]
#6  0x00007fb6d783ba39 in  () at /usr/lib/x86_64-linux-gnu/libKF5KCMUtils.so.5
#7  0x00007fb6d445181e in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fb6d57e6805 in QGuiApplication::paletteChanged(QPalette const&) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#9  0x00007fb6c38e64a5 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/platformthemes/KDEPlasmaPlatformTheme.so
#10 0x00007fb6c38f3315 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/platformthemes/KDEPlasmaPlatformTheme.so
#11 0x00007fb6d4d87650 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#12 0x00007fb6d4452359 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007fb6d5f8435c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#14 0x00007fb6d5f8bb11 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007fb6d44258a0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007fb6d442802d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007fb6d4479b03 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007fb6cdd14377 in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007fb6cdd145e0 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007fb6cdd1468c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007fb6d4479f0f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007fb6d442388a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007fb6d442bffc in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x000055c0cec4932a in  ()
#25 0x00007fb6d3a7a3f1 in __libc_start_main (main=0x55c0cec48f50, argc=1, argv=0x7fff02e677e8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff02e677d8) at ../csu/libc-start.c:291
#26 0x000055c0cec493aa in _start ()

Reported using DrKonqi