Bug 438714

Application: systemsettings5 (5.22.1)

Qt Version: 5.15.3
Frameworks Version: 5.83.0
Operating System: Linux 5.4.0-74-generic x86_64
Windowing System: X11
Drkonqi Version: 5.22.1
Distribution: KDE neon User Edition 5.22

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

System settings crash when validating screen configuration (laptop with external monitor, nvidia prime)

The reporter is unsure if this crash is reproducible.

-- Backtrace:
Application: Configuration du système (systemsettings5), signal: Segmentation fault

[New LWP 4004]
[New LWP 4005]
[New LWP 4012]
[New LWP 4013]
[New LWP 4019]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007f957dbc9aff in __GI___poll (fds=0x7ffc69774478, nfds=1, timeout=1000) at ../sysdeps/unix/sysv/linux/poll.c:29
[Current thread is 1 (Thread 0x7f957958b600 (LWP 3989))]

Thread 6 (Thread 0x7f95518f0700 (LWP 4019)):
#0  0x00007f957dbc9aff in __GI___poll (fds=0x7f95440499e0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f957bcc936e in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f957bcc94a3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f957e195b3b in QEventDispatcherGlib::processEvents (this=0x7f954401f7a0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f957e139dcb in QEventLoop::exec (this=this@entry=0x7f95518efcc0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#5  0x00007f957df53bb2 in QThread::exec (this=this@entry=0x557d1e671340) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#6  0x00007f957cff0559 in QQmlThreadPrivate::run (this=0x557d1e671340) at qml/ftw/qqmlthread.cpp:155
#7  0x00007f957df54d4c in QThreadPrivate::start (arg=0x557d1e671340) at thread/qthread_unix.cpp:329
#8  0x00007f957c688609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007f957dbd6293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f9552db1700 (LWP 4013)):
#0  __GI___libc_read (nbytes=16, buf=0x7f9552db0ab0, fd=23) at ../sysdeps/unix/sysv/linux/read.c:26
#1  __GI___libc_read (fd=23, buf=0x7f9552db0ab0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007f957bd11b2f in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f957bcc8ebe in g_main_context_check () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f957bcc9312 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f957bcc94a3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f957e195b3b in QEventDispatcherGlib::processEvents (this=0x7f954c000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#7  0x00007f957e139dcb in QEventLoop::exec (this=this@entry=0x7f9552db0cc0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#8  0x00007f957df53bb2 in QThread::exec (this=this@entry=0x557d1e3ed860) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#9  0x00007f957cff0559 in QQmlThreadPrivate::run (this=0x557d1e3ed860) at qml/ftw/qqmlthread.cpp:155
#10 0x00007f957df54d4c in QThreadPrivate::start (arg=0x557d1e3ed860) at thread/qthread_unix.cpp:329
#11 0x00007f957c688609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#12 0x00007f957dbd6293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f956d012700 (LWP 4012)):
#0  0x00007f957bd164dd in g_mutex_lock () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f957bcc9270 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f957bcc94a3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f957e195b3b in QEventDispatcherGlib::processEvents (this=0x7f9558000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f957e139dcb in QEventLoop::exec (this=this@entry=0x7f956d011cc0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#5  0x00007f957df53bb2 in QThread::exec (this=this@entry=0x557d1e1295a0) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#6  0x00007f957cff0559 in QQmlThreadPrivate::run (this=0x557d1e1295a0) at qml/ftw/qqmlthread.cpp:155
#7  0x00007f957df54d4c in QThreadPrivate::start (arg=0x557d1e1295a0) at thread/qthread_unix.cpp:329
#8  0x00007f957c688609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007f957dbd6293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f957762a700 (LWP 4005)):
#0  0x00007f957bcc732c in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f957bcc882b in g_main_context_prepare () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f957bcc929b in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f957bcc94a3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f957e195b3b in QEventDispatcherGlib::processEvents (this=0x7f9568000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f957e139dcb in QEventLoop::exec (this=this@entry=0x7f9577629cb0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#6  0x00007f957df53bb2 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#7  0x00007f957cc0bf4b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#8  0x00007f957df54d4c in QThreadPrivate::start (arg=0x7f957cc8fd80) at thread/qthread_unix.cpp:329
#9  0x00007f957c688609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#10 0x00007f957dbd6293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f9578514700 (LWP 4004)):
#0  0x00007f957dbc9aff in __GI___poll (fds=0x7f9578513be8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f957c6cdc1a in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f957c6cf90a in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f9578c5de88 in QXcbEventQueue::run (this=0x557d1db15b50) at qxcbeventqueue.cpp:228
#4  0x00007f957df54d4c in QThreadPrivate::start (arg=0x557d1db15b50) at thread/qthread_unix.cpp:329
#5  0x00007f957c688609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f957dbd6293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f957958b600 (LWP 3989)):
[KCrash Handler]
#4  KScreen::Mode::size (this=this@entry=0x0) at ./src/mode.cpp:89
#5  0x00007f956fe46d60 in OutputModel::<lambda(const ModePtr&)>::operator() (mode=..., __closure=<optimized out>) at ./kcm/output_model.cpp:407
#6  __gnu_cxx::__ops::_Iter_pred<OutputModel::setRefreshRate(int, int)::<lambda(const ModePtr&)> >::operator()<QMap<QString, QSharedPointer<KScreen::Mode> >::const_iterator> (__it=..., this=<optimized out>) at /usr/include/c++/9/bits/predefined_ops.h:283
#7  std::__find_if<QMap<QString, QSharedPointer<KScreen::Mode> >::const_iterator, __gnu_cxx::__ops::_Iter_pred<OutputModel::setRefreshRate(int, int)::<lambda(const ModePtr&)> > > (__pred=..., __last=..., __first=...) at /usr/include/c++/9/bits/stl_algo.h:104
#8  std::__find_if<QMap<QString, QSharedPointer<KScreen::Mode> >::const_iterator, __gnu_cxx::__ops::_Iter_pred<OutputModel::setRefreshRate(int, int)::<lambda(const ModePtr&)> > > (__pred=..., __last=..., __first=...) at /usr/include/c++/9/bits/stl_algo.h:161
#9  std::find_if<QMap<QString, QSharedPointer<KScreen::Mode> >::const_iterator, OutputModel::setRefreshRate(int, int)::<lambda(const ModePtr&)> > (__pred=..., __last=..., __first=...) at /usr/include/c++/9/bits/stl_algo.h:3963
#10 OutputModel::setRefreshRate (this=this@entry=0x557d20e2a540, outputIndex=0, refIndex=<optimized out>) at ./kcm/output_model.cpp:408
#11 0x00007f956fe49fe5 in OutputModel::setData (this=this@entry=0x557d20e2a540, index=..., value=..., role=role@entry=269) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qabstractitemmodel.h:62
#12 0x00007f957b7ace38 in QQmlDMAbstractItemModelData::setValue (value=..., role=269, this=0x557d1ec7fa90) at qqmladaptormodel.cpp:421
#13 QQmlDMCachedModelData::metaCall (this=0x557d1ec7fa90, call=<optimized out>, id=<optimized out>, arguments=<optimized out>) at qqmladaptormodel.cpp:298
#14 0x00007f957cf33450 in QQmlPropertyData::writeProperty (flags=..., value=0x7ffc69775520, target=0x557d1ec7fa90, this=0x557d20e2e888) at ../../include/QtQml/5.15.3/QtQml/private/../../../../../src/qml/qml/qqmlpropertydata_p.h:379
#15 QQmlPropertyPrivate::write (object=0x557d1ec7fa90, property=..., value=..., context=<optimized out>, flags=...) at qml/qqmlproperty.cpp:1305
#16 0x00007f957ce5078c in QV4::QObjectWrapper::setProperty (engine=0x557d1f8cc8a0, object=0x557d1ec7fa90, property=0x557d20e2e888, value=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qflags.h:120
#17 0x00007f957ce512be in QV4::QObjectWrapper::setQmlProperty (engine=0x557d1f8cc8a0, qmlContext=<optimized out>, object=0x557d1ec7fa90, name=<optimized out>, revisionMode=QV4::QObjectWrapper::IgnoreRevision, value=...) at jsruntime/qv4qobjectwrapper.cpp:435
#18 0x00007f957ce51437 in QV4::QObjectWrapper::virtualPut(QV4::Managed*, QV4::PropertyKey, QV4::Value const&, QV4::Value*) () at /usr/include/c++/9/bits/atomic_base.h:413
#19 0x00007f957ce14164 in QV4::Object::put (receiver=0x7f9550cb1550, v=..., id=..., this=0x7f9550cb1550) at ../../include/QtQml/5.15.3/QtQml/private/../../../../../src/qml/memory/qv4heap_p.h:73
#20 QV4::Object::virtualResolveLookupSetter (object=0x7f9550cb1550, engine=0x557d1f8cc8a0, lookup=0x557d1f1f9410, value=...) at jsruntime/qv4object.cpp:804
#21 0x00007f957ce6bcf6 in QV4::Moth::VME::interpret (frame=0x7ffc697758c0, engine=0x557d1f8cc8a0, code=0x7f956fcaf049 "\016\002") at jsruntime/qv4vme_moth.cpp:653
#22 0x00007f957ce7111f in QV4::Moth::VME::exec (frame=frame@entry=0x7ffc697758c0, engine=engine@entry=0x557d1f8cc8a0) at jsruntime/qv4vme_moth.cpp:463
#23 0x00007f957cdfe2fd in QV4::Function::call (this=this@entry=0x557d20e2fb00, thisObject=<optimized out>, argv=argv@entry=0x7f9550cb1508, argc=<optimized out>, context=<optimized out>) at jsruntime/qv4function.cpp:69
#24 0x00007f957cfa3fb7 in QQmlJavaScriptExpression::evaluate (this=this@entry=0x557d1eb4ed20, callData=callData@entry=0x7f9550cb14d8, isUndefined=isUndefined@entry=0x0) at ../../include/QtQml/5.15.3/QtQml/private/../../../../../src/qml/jsruntime/qv4value_p.h:343
#25 0x00007f957cf478be in QQmlBoundSignalExpression::evaluate (this=<optimized out>, a=<optimized out>) at ../../include/QtQml/5.15.3/QtQml/private/../../../../../src/qml/jsruntime/qv4jscall_p.h:95
#26 0x00007f957cf48958 in QQmlBoundSignal_callback (e=0x557d1eb4e1b0, a=0x7ffc697775d0) at ../../include/QtQml/5.15.3/QtQml/private/../../../../../src/qml/qml/qqmlboundsignalexpressionpointer_p.h:69
#27 0x00007f957cf8365d in QQmlNotifier::emitNotify (endpoint=<optimized out>, a=a@entry=0x7ffc697775d0) at qml/qqmlnotifier.cpp:104
#28 0x00007f957cf25fcf in QQmlData::signalEmitted (object=0x557d1eb26730, index=61, a=0x7ffc697775d0) at qml/qqmlengine.cpp:834
#29 0x00007f957e171e75 in doActivate<false> (sender=0x557d1eb26730, signal_index=61, argv=0x7ffc697775d0) at kernel/qobject_p.h:110
#30 0x00007f957e16b6b7 in QMetaObject::activate (sender=sender@entry=0x557d1eb26730, m=m@entry=0x7f9577938060 <QQuickComboBox::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffc697775d0) at kernel/qobject.cpp:3946
#31 0x00007f95778ce422 in QQuickComboBox::activated (this=this@entry=0x557d1eb26730, _t1=<optimized out>) at .moc/moc_qquickcombobox_p.cpp:759
#32 0x00007f95778531d0 in QQuickComboBoxPrivate::hidePopup (this=0x557d1e7fc2c0, accept=<optimized out>) at qquickcombobox.cpp:323
#33 0x00007f957e1722ee in QtPrivate::QSlotObjectBase::call (a=0x7ffc697776b0, r=0x557d1eb26730, this=0x557d21b01930) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#34 doActivate<false> (sender=0x557d21acdee0, signal_index=64, argv=0x7ffc697776b0) at kernel/qobject.cpp:3886
#35 0x00007f9577842a81 in QQuickAbstractButtonPrivate::handleRelease (this=0x557d1ec89650, point=...) at qquickabstractbutton.cpp:182
#36 0x00007f9577861b19 in QQuickControl::mouseReleaseEvent (this=<optimized out>, event=0x7ffc69777f40) at /usr/include/x86_64-linux-gnu/qt5/QtGui/qevent.h:128
#37 0x00007f957d3b6998 in QQuickItem::event (this=0x557d21acdee0, ev=0x7ffc69777f40) at items/qquickitem.cpp:8163
#38 0x00007f957ed3edc3 in QApplicationPrivate::notify_helper (this=this@entry=0x557d1db128a0, receiver=receiver@entry=0x557d21acdee0, e=e@entry=0x7ffc69777f40) at kernel/qapplication.cpp:3632
#39 0x00007f957ed47bb8 in QApplication::notify (this=0x7ffc69778ec0, receiver=0x557d21acdee0, e=0x7ffc69777f40) at kernel/qapplication.cpp:3156
#40 0x00007f957e13b2ca in QCoreApplication::notifyInternal2 (receiver=0x557d21acdee0, event=0x7ffc69777f40) at ../../include/QtCore/5.15.3/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:325
#41 0x00007f957d3d0dd5 in QQuickWindowPrivate::deliverMouseEvent (this=this@entry=0x557d1de31ae0, pointerEvent=0x557d1e304f60) at items/qquickwindow.cpp:2020
#42 0x00007f957d3d24ff in QQuickWindowPrivate::deliverPointerEvent (this=this@entry=0x557d1de31ae0, event=0x557d1e304f60) at items/qquickwindow.cpp:2612
#43 0x00007f957d3d3429 in QQuickWindowPrivate::handleMouseEvent (event=0x7ffc69777f40, this=0x557d1de31ae0) at items/qquickwindow.cpp:2457
#44 QQuickWindowPrivate::handleMouseEvent (this=0x557d1de31ae0, event=0x7ffc69777f40) at items/qquickwindow.cpp:2410
#45 0x00007f957e653e1d in QWindow::event (this=this@entry=0x557d1e6583e0, ev=ev@entry=0x7ffc69777f40) at kernel/qwindow.cpp:2438
#46 0x00007f957d3d4e9b in QQuickWindow::event (this=0x557d1e6583e0, e=0x7ffc69777f40) at items/qquickwindow.cpp:1902
#47 0x00007f957ed3edc3 in QApplicationPrivate::notify_helper (this=this@entry=0x557d1db128a0, receiver=receiver@entry=0x557d1e6583e0, e=e@entry=0x7ffc69777f40) at kernel/qapplication.cpp:3632
#48 0x00007f957ed47bb8 in QApplication::notify (this=0x7ffc69778ec0, receiver=0x557d1e6583e0, e=0x7ffc69777f40) at kernel/qapplication.cpp:3156
#49 0x00007f957e13b2ca in QCoreApplication::notifyInternal2 (receiver=0x557d1e6583e0, event=0x7ffc69777f40) at ../../include/QtCore/5.15.3/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:325
#50 0x00007f957d705dcb in QQuickWidget::mouseReleaseEvent (this=<optimized out>, e=0x7ffc69778580) at qquickwidget.cpp:1417
#51 0x00007f957ed81cf6 in QWidget::event (this=this@entry=0x557d1e7c48d0, event=event@entry=0x7ffc69778580) at kernel/qwidget.cpp:8664
#52 0x00007f957d705fa7 in QQuickWidget::event (this=0x557d1e7c48d0, e=0x7ffc69778580) at qquickwidget.cpp:1573
#53 0x00007f957ed3edc3 in QApplicationPrivate::notify_helper (this=this@entry=0x557d1db128a0, receiver=receiver@entry=0x557d1e7c48d0, e=e@entry=0x7ffc69778580) at kernel/qapplication.cpp:3632
#54 0x00007f957ed47e77 in QApplication::notify (this=<optimized out>, receiver=0x557d1e7c48d0, e=0x7ffc69778580) at kernel/qapplication.cpp:3076
#55 0x00007f957e13b2ca in QCoreApplication::notifyInternal2 (receiver=0x557d1e7c48d0, event=0x7ffc69778580) at ../../include/QtCore/5.15.3/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:325
#56 0x00007f957ed470a7 in QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x557d1e7c48d0, event=event@entry=0x7ffc69778580, alienWidget=alienWidget@entry=0x557d1e7c48d0, nativeWidget=0x557d1dbce070, buttonDown=<optimized out>, lastMouseReceiver=..., spontaneous=true, onlyDispatchEnterLeave=false) at kernel/qapplication.cpp:2614
#57 0x00007f957ed9cf44 in QWidgetWindow::handleMouseEvent (this=0x557d1dd3a050, event=0x7ffc69778a00) at /usr/include/c++/9/bits/atomic_base.h:413
#58 0x00007f957eda0264 in QWidgetWindow::event (event=0x7ffc69778a00, this=0x557d1dd3a050) at kernel/qwidgetwindow.cpp:300
#59 QWidgetWindow::event (this=0x557d1dd3a050, event=0x7ffc69778a00) at kernel/qwidgetwindow.cpp:239
#60 0x00007f957ed3edc3 in QApplicationPrivate::notify_helper (this=this@entry=0x557d1db128a0, receiver=receiver@entry=0x557d1dd3a050, e=e@entry=0x7ffc69778a00) at kernel/qapplication.cpp:3632
#61 0x00007f957ed47bb8 in QApplication::notify (this=0x7ffc69778ec0, receiver=0x557d1dd3a050, e=0x7ffc69778a00) at kernel/qapplication.cpp:3156
#62 0x00007f957e13b2ca in QCoreApplication::notifyInternal2 (receiver=0x557d1dd3a050, event=0x7ffc69778a00) at ../../include/QtCore/5.15.3/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:325
#63 0x00007f957e6484e8 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () at kernel/qguiapplication.cpp:2282
#64 0x00007f957e649b55 in QGuiApplicationPrivate::processWindowSystemEvent (e=0x557d2063ded0) at kernel/qguiapplication.cpp:2002
#65 0x00007f957e6217ac in QWindowSystemInterface::sendWindowSystemEvents (flags=flags@entry=...) at kernel/qwindowsysteminterface.cpp:1169
#66 0x00007f9578c5eeae in xcbSourceDispatch (source=<optimized out>) at qxcbeventdispatcher.cpp:105
#67 0x00007f957bcc917d in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#68 0x00007f957bcc9400 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#69 0x00007f957bcc94a3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#70 0x00007f957e195b22 in QEventDispatcherGlib::processEvents (this=0x557d1dbdb8b0, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#71 0x00007f957e139dcb in QEventLoop::exec (this=this@entry=0x7ffc69778da0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#72 0x00007f957e141f84 in QCoreApplication::exec () at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#73 0x0000557d1d0f7272 in main (argc=<optimized out>, argv=<optimized out>) at ./app/main.cpp:208
[Inferior 1 (process 3989) detached]

Reported using DrKonqi