Bug 407912

Application: systemsettings5 (5.13.5)

Qt Version: 5.11.1
Frameworks Version: 5.50.0
Operating System: Linux 4.18.0-20-generic x86_64
Distribution: Ubuntu 18.10

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

I clicked quickly on several item of the left menu. 

It happened only once, I cannot reproduce it though.

The crash does not seem to be reproducible.

-- Backtrace:
Application: Configuration du système (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fafb90de840 (LWP 5853))]

Thread 9 (Thread 0x7faf8dfbd700 (LWP 9181)):
#0  0x00007fafbf2ae6d9 in __GI___poll (fds=0x55d7ad325780, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fafbc5dae46 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fafbc5db1d2 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007faf9a8327b6 in  () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007fafbc603135 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fafbd753164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#6  0x00007fafbf2badef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7faf8fbff700 (LWP 9180)):
#0  0x00007fafbf2a9f64 in __GI___libc_read (fd=29, buf=0x7faf8fbfeca0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:26
#1  0x00007fafbc620180 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fafbc5da91f in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fafbc5dadf0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fafbc5daf6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fafbc5dafb1 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fafbc603135 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007fafbd753164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#8  0x00007fafbf2badef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7faf8ebbe700 (LWP 9162)):
#0  0x00007fafbf2ae6d9 in __GI___poll (fds=0x7faf80012680, nfds=3, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fafac2469b1 in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#2  0x00007fafac2381e0 in pa_mainloop_poll () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007fafac23882e in pa_mainloop_iterate () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007fafac2388e0 in pa_mainloop_run () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007fafac2468f9 in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007fafac1e66f8 in  () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-12.2.so
#7  0x00007fafbd753164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#8  0x00007fafbf2badef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7faf99370700 (LWP 7477)):
#0  0x00007fafbf5cae6f in QMutex::unlock() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007fafbf7d2081 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007fafbc5da379 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fafbc5dad7b in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fafbc5daf6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fafbf7d215b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fafbf77f16b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fafbf5ce0b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fafbe88e1f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007fafbf5d7c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fafbd753164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#11 0x00007fafbf2badef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fafa1efa700 (LWP 5862)):
#0  0x00007fafbf2ae6d9 in __GI___poll (fds=0x7faf94003ce0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fafbc5dae46 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fafbc5daf6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fafbf7d215b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fafbf77f16b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fafbf5ce0b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fafbe88e1f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fafbf5d7c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fafbd753164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#9  0x00007fafbf2badef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fafa3456700 (LWP 5861)):
#0  0x00007fafbf2ae6d9 in __GI___poll (fds=0x7faf9c004a00, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fafbc5dae46 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fafbc5daf6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fafbf7d215b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fafbf77f16b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fafbf5ce0b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fafbe88e1f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fafbf5d7c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fafbd753164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#9  0x00007fafbf2badef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fafaf08c700 (LWP 5858)):
#0  0x00007fafbd7592eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55d7a9d7cecc) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fafbd7592eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x55d7a9d7ce78, cond=0x55d7a9d7cea0) at pthread_cond_wait.c:502
#2  0x00007fafbd7592eb in __pthread_cond_wait (cond=0x55d7a9d7cea0, mutex=0x55d7a9d7ce78) at pthread_cond_wait.c:655
#3  0x00007fafaf6ecebb in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007fafaf6ecc27 in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007fafbd753164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#6  0x00007fafbf2badef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fafb5bcd700 (LWP 5855)):
#0  0x00007fafbf2ae6d9 in __GI___poll (fds=0x7fafa80201e0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fafbc5dae46 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fafbc5daf6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fafbf7d215b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fafbf77f16b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fafbf5ce0b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fafbfa8b545 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007fafbf5d7c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fafbd753164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#9  0x00007fafbf2badef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fafb90de840 (LWP 5853)):
[KCrash Handler]
#6  0x00007fafc0b95304 in KQuickAddons::ConfigModule::needsSave() () at /usr/lib/x86_64-linux-gnu/libKF5QuickAddons.so.5
#7  0x00007fafc0ccb4bb in  () at /usr/lib/x86_64-linux-gnu/libKF5KCMUtils.so.5
#8  0x00007fafbf7a9830 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007faf9ad7dd43 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/kcms/kcm_launchfeedback.so
#10 0x00007faf9ad803e3 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/kcms/kcm_launchfeedback.so
#11 0x00007fafbe7aa084 in QV4::QObjectWrapper::setProperty(QV4::ExecutionEngine*, QObject*, QQmlPropertyData*, QV4::Value const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#12 0x00007fafbe7aadde in QV4::QObjectWrapper::setQmlProperty(QV4::ExecutionEngine*, QQmlContextData*, QObject*, QV4::String*, QV4::QObjectWrapper::RevisionMode, QV4::Value const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#13 0x00007fafbe7aaed4 in QV4::QObjectWrapper::put(QV4::Managed*, QV4::String*, QV4::Value const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#14 0x00007fafbe7bdeac in QV4::Runtime::method_storeProperty(QV4::ExecutionEngine*, QV4::Value const&, int, QV4::Value const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#15 0x00007fafbe7c9789 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#16 0x00007fafa0073d7d in  ()
#17 0x00007faf98731320 in  ()
#18 0x00007faf98731328 in  ()
#19 0x00007fafb0014d10 in  ()
#20 0x0000000000000000 in  ()
[Inferior 1 (process 5853) detached]

Reported using DrKonqi