Bug 374198

Application: systemsettings5 (5.8.90)

Qt Version: 5.7.0
Frameworks Version: 5.30.0
Operating System: Linux 4.8.15-040815-generic x86_64
Distribution: Ubuntu 16.10

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

I was exploring all settings and was hitting the back arrow to return to the main screen.

-- 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 0x7f6df98378c0 (LWP 24023))]

Thread 7 (Thread 0x7f6dca661700 (LWP 26658)):
#0  0x00007f6e0000d820 in g_poll (fds=0x478b9a0, nfds=1, timeout=-1) at ././glib/gpoll.c:124
#1  0x00007f6dffffd9d6 in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x478b9a0, timeout=<optimized out>, context=0x4b17130) at ././glib/gmain.c:4228
#2  0x00007f6dffffd9d6 in g_main_context_iterate (context=context@entry=0x4b17130, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3924
#3  0x00007f6dffffdaec in g_main_context_iteration (context=0x4b17130, may_block=may_block@entry=1) at ././glib/gmain.c:3990
#4  0x00007f6e055f223b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x4b95a40, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f6e0559ccea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f6dca660ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210
#6  0x00007f6e053c1fb4 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:507
#7  0x00007f6e03d1a675 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f6e053c6b98 in QThreadPrivate::start(void*) (arg=0x4b89df0) at thread/qthread_unix.cpp:344
#9  0x00007f6e01ed36ca in start_thread (arg=0x7f6dca661700) at pthread_create.c:333
#10 0x00007f6e04cd10af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 6 (Thread 0x7f6dd519b700 (LWP 26657)):
#0  0x00007f6e00043044 in g_mutex_unlock (mutex=0x39b1b20) at ././glib/gthread-posix.c:1348
#1  0x00007f6dffffd1d9 in g_main_context_query (context=context@entry=0x39b1b20, max_priority=2147483647, timeout=timeout@entry=0x7f6dd519aba4, fds=fds@entry=0x34d70d0, n_fds=n_fds@entry=1) at ././glib/gmain.c:3656
#2  0x00007f6dffffd948 in g_main_context_iterate (context=context@entry=0x39b1b20, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3911
#3  0x00007f6dffffdaec in g_main_context_iteration (context=0x39b1b20, may_block=may_block@entry=1) at ././glib/gmain.c:3990
#4  0x00007f6e055f223b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x3bd4fb0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f6e0559ccea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f6dd519ace0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210
#6  0x00007f6e053c1fb4 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:507
#7  0x00007f6e03d1a675 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f6e053c6b98 in QThreadPrivate::start(void*) (arg=0x3c24a50) at thread/qthread_unix.cpp:344
#9  0x00007f6e01ed36ca in start_thread (arg=0x7f6dd519b700) at pthread_create.c:333
#10 0x00007f6e04cd10af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 5 (Thread 0x7f6dd2f02700 (LWP 26656)):
#0  0x00007f6e04cc50bd in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f6dffffd9d6 in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x2a01e50, timeout=<optimized out>, context=0x3156590) at ././glib/gmain.c:4228
#2  0x00007f6dffffd9d6 in g_main_context_iterate (context=context@entry=0x3156590, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3924
#3  0x00007f6dffffdaec in g_main_context_iteration (context=0x3156590, may_block=may_block@entry=1) at ././glib/gmain.c:3990
#4  0x00007f6e055f223b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x23a5bd0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f6e0559ccea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f6dd2f01ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210
#6  0x00007f6e053c1fb4 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:507
#7  0x00007f6e03d1a675 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f6e053c6b98 in QThreadPrivate::start(void*) (arg=0x24cc330) at thread/qthread_unix.cpp:344
#9  0x00007f6e01ed36ca in start_thread (arg=0x7f6dd2f02700) at pthread_create.c:333
#10 0x00007f6e04cd10af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 4 (Thread 0x7f6dd378b700 (LWP 26650)):
#0  0x00007f6dffffcee5 in g_main_context_prepare (context=context@entry=0x222cff0, priority=priority@entry=0x7f6dd378abc0) at ././glib/gmain.c:3513
#1  0x00007f6dffffd8fb in g_main_context_iterate (context=context@entry=0x222cff0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3909
#2  0x00007f6dffffdaec in g_main_context_iteration (context=0x222cff0, may_block=may_block@entry=1) at ././glib/gmain.c:3990
#3  0x00007f6e055f223b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x1d9f6e0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f6e0559ccea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f6dd378ad00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210
#5  0x00007f6e053c1fb4 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:507
#6  0x00007f6e053c6b98 in QThreadPrivate::start(void*) (arg=0x236c8f0) at thread/qthread_unix.cpp:344
#7  0x00007f6e01ed36ca in start_thread (arg=0x7f6dd378b700) at pthread_create.c:333
#8  0x00007f6e04cd10af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 3 (Thread 0x7f6ddd507700 (LWP 26649)):
#0  0x00007f6e00043044 in g_mutex_unlock (mutex=0x2a25be0) at ././glib/gthread-posix.c:1348
#1  0x00007f6dffffd9ca in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x23ce110, timeout=<optimized out>, context=0x2a25be0) at ././glib/gmain.c:4227
#2  0x00007f6dffffd9ca in g_main_context_iterate (context=context@entry=0x2a25be0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3924
#3  0x00007f6dffffdaec in g_main_context_iteration (context=0x2a25be0, may_block=may_block@entry=1) at ././glib/gmain.c:3990
#4  0x00007f6e055f223b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x2a74df0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f6e0559ccea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f6ddd506d00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210
#6  0x00007f6e053c1fb4 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:507
#7  0x00007f6e053c6b98 in QThreadPrivate::start(void*) (arg=0x2362c60) at thread/qthread_unix.cpp:344
#8  0x00007f6e01ed36ca in start_thread (arg=0x7f6ddd507700) at pthread_create.c:333
#9  0x00007f6e04cd10af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 2 (Thread 0x7f6df4e3c700 (LWP 24025)):
#0  0x00007f6dffffd401 in g_main_context_check (context=context@entry=0x1dd5570, max_priority=2147483647, fds=fds@entry=0x1db1df0, n_fds=n_fds@entry=1) at ././glib/gmain.c:3808
#1  0x00007f6dffffd974 in g_main_context_iterate (context=context@entry=0x1dd5570, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3926
#2  0x00007f6dffffdaec in g_main_context_iteration (context=0x1dd5570, may_block=may_block@entry=1) at ././glib/gmain.c:3990
#3  0x00007f6e055f223b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x1dbaba0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f6e0559ccea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f6df4e3bcd0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210
#5  0x00007f6e053c1fb4 in QThread::exec() (this=this@entry=0x7f6e0874dd60 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread.cpp:507
#6  0x00007f6e086d97a5 in QDBusConnectionManager::run() (this=0x7f6e0874dd60 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:196
#7  0x00007f6e053c6b98 in QThreadPrivate::start(void*) (arg=0x7f6e0874dd60 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:344
#8  0x00007f6e01ed36ca in start_thread (arg=0x7f6df4e3c700) at pthread_create.c:333
#9  0x00007f6e04cd10af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 1 (Thread 0x7f6df98378c0 (LWP 24023)):
[KCrash Handler]
#6  0x00007f6df8da7609 in wl_map_insert_at () at /usr/lib/x86_64-linux-gnu/libwayland-client.so.0
#7  0x00007f6df8da386e in wl_proxy_destroy () at /usr/lib/x86_64-linux-gnu/libwayland-client.so.0
#8  0x00007f6df7df3f45 in KWayland::Client::Registry::release() () at /usr/lib/x86_64-linux-gnu/libKF5WaylandClient.so.5
#9  0x00007f6df7df3f6c in KWayland::Client::Registry::~Registry() () at /usr/lib/x86_64-linux-gnu/libKF5WaylandClient.so.5
#10 0x00007f6df7df4019 in KWayland::Client::Registry::~Registry() () at /usr/lib/x86_64-linux-gnu/libKF5WaylandClient.so.5
#11 0x00007f6e055c82e3 in QObjectPrivate::deleteChildren() (this=this@entry=0x22ff870) at kernel/qobject.cpp:1970
#12 0x00007f6e055d1484 in QObject::~QObject() (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:1041
#13 0x00007f6deaea4293 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/kf5/org.kde.kwindowsystem.platforms/KF5WindowSystemKWaylandPlugin.so
#14 0x00007f6e04c032e0 in __run_exit_handlers (status=0, listp=0x7f6e04f8a5d8 <__exit_funcs>, run_list_atexit=run_list_atexit@entry=true, run_dtors=run_dtors@entry=true) at exit.c:83
#15 0x00007f6e04c0333a in __GI_exit (status=<optimized out>) at exit.c:105
#16 0x00007f6e04be93f8 in __libc_start_main (main=0x40beb0, argc=1, argv=0x7ffd0356d8e8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd0356d8d8) at ../csu/libc-start.c:325
#17 0x000000000040c319 in _start ()

Possible duplicates by query: bug 372597.

Reported using DrKonqi