Bug 390841

Application: systemsettings5 (5.12.1)

Qt Version: 5.9.3
Frameworks Version: 5.43.0
Operating System: Linux 4.13.0-32-generic x86_64
Distribution: KDE neon User Edition 5.12

-- Information about the crash:
- What I was doing when the application crashed: typing question into the search box of settings. Nothing else was done at the moment (although other apps open).

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 0x7f95bbfb28c0 (LWP 1807))]

Thread 5 (Thread 0x7f95897cf700 (LWP 1905)):
#0  0x00007f95b7ab274d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f95b1cf238c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f95b1cf249c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f95b83d96cb in QEventDispatcherGlib::processEvents (this=0x7f95840008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f95b8381e2a in QEventLoop::exec (this=this@entry=0x7f95897cece0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007f95b81aa8f4 in QThread::exec (this=this@entry=0xb34bf0) at thread/qthread.cpp:515
#6  0x00007f95b5d20d25 in QQmlThreadPrivate::run (this=0xb34bf0) at qml/ftw/qqmlthread.cpp:147
#7  0x00007f95b81af709 in QThreadPrivate::start (arg=0xb34bf0) at thread/qthread_unix.cpp:368
#8  0x00007f95b3fa06ba in start_thread (arg=0x7f95897cf700) at pthread_create.c:333
#9  0x00007f95b7abe41d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f95933c8700 (LWP 1821)):
#0  0x00007f95b7ab274d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f95b1cf238c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f95b1cf249c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f95b83d96cb in QEventDispatcherGlib::processEvents (this=0x7f958c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f95b8381e2a in QEventLoop::exec (this=this@entry=0x7f95933c7ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007f95b81aa8f4 in QThread::exec (this=this@entry=0xb5a390) at thread/qthread.cpp:515
#6  0x00007f95b5d20d25 in QQmlThreadPrivate::run (this=0xb5a390) at qml/ftw/qqmlthread.cpp:147
#7  0x00007f95b81af709 in QThreadPrivate::start (arg=0xb5a390) at thread/qthread_unix.cpp:368
#8  0x00007f95b3fa06ba in start_thread (arg=0x7f95933c8700) at pthread_create.c:333
#9  0x00007f95b7abe41d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f959fb18700 (LWP 1812)):
#0  0x00007f95b7ab274d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f95b1cf238c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f95b1cf249c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f95b83d96cb in QEventDispatcherGlib::processEvents (this=0x7f95980008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f95b8381e2a in QEventLoop::exec (this=this@entry=0x7f959fb17cd0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007f95b81aa8f4 in QThread::exec (this=this@entry=0x7f95b9f4bd40 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread.cpp:515
#6  0x00007f95b9cd7315 in QDBusConnectionManager::run (this=0x7f95b9f4bd40 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:178
#7  0x00007f95b81af709 in QThreadPrivate::start (arg=0x7f95b9f4bd40 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:368
#8  0x00007f95b3fa06ba in start_thread (arg=0x7f959fb18700) at pthread_create.c:333
#9  0x00007f95b7abe41d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f95a8b4c700 (LWP 1809)):
#0  0x00007f95b7ab274d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f95b3b34c62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f95b3b368d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f95ab0a31f9 in QXcbEventReader::run (this=0x75e800) at qxcbconnection.cpp:1330
#4  0x00007f95b81af709 in QThreadPrivate::start (arg=0x75e800) at thread/qthread_unix.cpp:368
#5  0x00007f95b3fa06ba in start_thread (arg=0x7f95a8b4c700) at pthread_create.c:333
#6  0x00007f95b7abe41d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f95bbfb28c0 (LWP 1807)):
[KCrash Handler]
#6  QScopedScopeLevelCounter::QScopedScopeLevelCounter (threadData=0x0, this=<synthetic pointer>) at ../../include/QtCore/5.9.3/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:304
#7  QCoreApplication::notifyInternal2 (receiver=0x6116150, event=0x7fff7d00db80) at kernel/qcoreapplication.cpp:1015
#8  0x00007f95b621ece9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007f95b622add7 in QQuickItemPrivate::deliverKeyEvent(QKeyEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007f95b622b185 in QQuickItem::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007f95b9374b9c in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0xc1cdb0, e=0x7fff7d00db80) at kernel/qapplication.cpp:3722
#12 0x00007f95b937c5a7 in QApplication::notify (this=0x7fff7d00dfb0, receiver=0xc1cdb0, e=0x7fff7d00db80) at kernel/qapplication.cpp:3481
#13 0x00007f95b8383df8 in QCoreApplication::notifyInternal2 (receiver=0xc1cdb0, event=0x7fff7d00db80) at kernel/qcoreapplication.cpp:1018
#14 0x00007f95b623bdbd in QQuickWindow::sendEvent(QQuickItem*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#15 0x00007f95b623c07f in QQuickWindow::keyReleaseEvent(QKeyEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#16 0x00007f95b8c128e5 in QWindow::event (this=0xb27ac0, ev=<optimized out>) at kernel/qwindow.cpp:2267
#17 0x00007f95b6243e85 in QQuickWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#18 0x00007f95b9374b9c in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0xb27ac0, e=0x7fff7d00db80) at kernel/qapplication.cpp:3722
#19 0x00007f95b937c5a7 in QApplication::notify (this=0x7fff7d00dfb0, receiver=0xb27ac0, e=0x7fff7d00db80) at kernel/qapplication.cpp:3481
#20 0x00007f95b8383df8 in QCoreApplication::notifyInternal2 (receiver=0xb27ac0, event=0x7fff7d00db80) at kernel/qcoreapplication.cpp:1018
#21 0x00007f95b68aefec in QQuickWidget::keyReleaseEvent(QKeyEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5QuickWidgets.so.5
#22 0x00007f95b93b3b08 in QWidget::event (this=0xb58830, event=0x7fff7d00db80) at kernel/qwidget.cpp:9200
#23 0x00007f95b68b074b in QQuickWidget::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5QuickWidgets.so.5
#24 0x00007f95b9374b9c in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0xb58830, e=0x7fff7d00db80) at kernel/qapplication.cpp:3722
#25 0x00007f95b937ded6 in QApplication::notify (this=0x7fff7d00dfb0, receiver=0xb58830, e=0x7fff7d00db80) at kernel/qapplication.cpp:3116
#26 0x00007f95b8383df8 in QCoreApplication::notifyInternal2 (receiver=0xb58830, event=0x7fff7d00db80) at kernel/qcoreapplication.cpp:1018
#27 0x00007f95b93d057b in QWidgetWindow::event (this=0x8bbdf0, event=0x7fff7d00db80) at kernel/qwidgetwindow.cpp:236
#28 0x00007f95b9374b9c in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x8bbdf0, e=0x7fff7d00db80) at kernel/qapplication.cpp:3722
#29 0x00007f95b937c5a7 in QApplication::notify (this=0x7fff7d00dfb0, receiver=0x8bbdf0, e=0x7fff7d00db80) at kernel/qapplication.cpp:3481
#30 0x00007f95b8383df8 in QCoreApplication::notifyInternal2 (receiver=receiver@entry=0x8bbdf0, event=event@entry=0x7fff7d00db80) at kernel/qcoreapplication.cpp:1018
#31 0x00007f95b8c02dd8 in QCoreApplication::sendSpontaneousEvent (event=0x7fff7d00db80, receiver=0x8bbdf0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#32 QGuiApplicationPrivate::processKeyEvent (e=0x61a7100) at kernel/qguiapplication.cpp:2075
#33 0x00007f95b8c08175 in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x61a7100) at kernel/qguiapplication.cpp:1739
#34 0x00007f95b8be17cb in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:939
#35 0x00007f95ab102470 in userEventSourceDispatch (source=<optimized out>) at qeventdispatcher_glib.cpp:77
#36 0x00007f95b1cf2197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007f95b1cf23f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#38 0x00007f95b1cf249c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#39 0x00007f95b83d96af in QEventDispatcherGlib::processEvents (this=0x78d190, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#40 0x00007f95b8381e2a in QEventLoop::exec (this=this@entry=0x7fff7d00de90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#41 0x00007f95b838ad64 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1291
#42 0x000000000040b6fe in ?? ()
#43 0x00007f95b79d7830 in __libc_start_main (main=0x40b2d0, argc=3, argv=0x7fff7d00e0e8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff7d00e0d8) at ../csu/libc-start.c:291
#44 0x000000000040b779 in _start ()

The reporter indicates this bug may be a duplicate of or related to bug 389275.

Possible duplicates by query: bug 389275, bug 386683.

Reported using DrKonqi