Application: systemsettings5 (5.5.5)

Qt Version: 5.5.1
Operating System: Linux 4.13.0-43-generic x86_64
Distribution: Ubuntu 16.04.4 LTS

-- Information about the crash:
- What I was doing when the application crashed:
我使用alt-space 输入setting 选中了系统设置并开启。
然后如果我没有做任何操作就直接关闭，不会报告遮盖崩溃。
但是当我选中了某些设置之后，再点击关闭，或者alt-f4关闭。系统设置关闭后会报告崩溃。
但是设置还是生效当

-- Backtrace:
Application: 系统设置 (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fba210178c0 (LWP 1521))]

Thread 3 (Thread 0x7fba00f76700 (LWP 1571)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fba010f3bd4 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007fba010f3c19 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007fba1ab9f6ba in start_thread (arg=0x7fba00f76700) at pthread_create.c:333
#4  0x00007fba1d73a41d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fba0f6c0700 (LWP 1526)):
#0  0x00007fba1d72e74d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fba1b415c62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fba1b4178d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fba11a12889 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fba1de247be in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fba1ab9f6ba in start_thread (arg=0x7fba0f6c0700) at pthread_create.c:333
#6  0x00007fba1d73a41d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fba210178c0 (LWP 1521)):
[KCrash Handler]
#6  0x0000000002ebd8d0 in ?? ()
#7  0x00007fba1e037f49 in QObject::disconnect(QObject const*, char const*, QObject const*, char const*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fb97e6f41b3 in KParts::PartManager::~PartManager() () from /usr/lib/x86_64-linux-gnu/libKF5Parts.so.5
#9  0x00007fb97e6f4369 in KParts::PartManager::~PartManager() () from /usr/lib/x86_64-linux-gnu/libKF5Parts.so.5
#10 0x00007fba1e03228b in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007fba1e03bb00 in QObject::~QObject() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fb97ee3731b in KHTMLPart::~KHTMLPart() () from /usr/lib/x86_64-linux-gnu/libKF5KHtml.so.5
#13 0x00007fb97ee37439 in KHTMLPart::~KHTMLPart() () from /usr/lib/x86_64-linux-gnu/libKF5KHtml.so.5
#14 0x00007fba1e034c20 in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007fba1f4d805c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007fba1f4dd516 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007fba1e00538b in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007fba1e007786 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007fba1e05b3c3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007fba1a67e197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007fba1a67e3f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007fba1a67e49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007fba1e05b7cf in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007fba1e002b4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007fba1e00abec in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x000000000040f7a1 in main ()

Possible duplicates by query: bug 388443, bug 383654.

Reported using DrKonqi