Bug 426110

Application: kdeconnectd (1.4.0)

Qt Version: 5.15.0
Frameworks Version: 5.73.0
Operating System: Linux 5.8.4-1-default x86_64
Windowing system: X11
Distribution: "openSUSE Tumbleweed"

-- Information about the crash:
- What I was doing when the application crashed:
I logged out of kde session to the login screen - after logging in almost always i get errors loading my desktop
- Unusual behavior I noticed:
the screen goes completely blank

The crash can be reproduced sometimes.

-- Backtrace:
Application: Usługa KDE Connect (kdeconnectd), signal: Segmentation fault

[KCrash Handler]
#4  0x00007f9cb106f77a in std::__atomic_base<QtSharedPointer::ExternalRefCountData*>::load(std::memory_order) const (__m=std::memory_order_relaxed, this=<optimized out>) at /usr/include/c++/10/bits/atomic_base.h:741
#5  std::atomic<QtSharedPointer::ExternalRefCountData*>::load(std::memory_order) const (__m=std::memory_order_relaxed, this=<optimized out>) at /usr/include/c++/10/atomic:523
#6  QAtomicOps<QtSharedPointer::ExternalRefCountData*>::loadRelaxed<QtSharedPointer::ExternalRefCountData*>(std::atomic<QtSharedPointer::ExternalRefCountData*> const&) (_q_value=...) at ../../include/QtCore/../../src/corelib/thread/qatomic_cxx11.h:239
#7  QBasicAtomicPointer<QtSharedPointer::ExternalRefCountData>::loadRelaxed() const (this=<optimized out>) at ../../include/QtCore/../../src/corelib/thread/qbasicatomic.h:248
#8  QtSharedPointer::ExternalRefCountData::getAndRef(QObject const*) (obj=obj@entry=0x55fed0dd39b0) at tools/qsharedpointer.cpp:1395
#9  0x00007f9cb258382d in QWeakPointer<QObject>::QWeakPointer<KNotification, true>(KNotification*, bool) (ptr=0x55fed0dd39b0, this=0x7ffd7bf31a40) at /usr/include/qt5/QtCore/qsharedpointer_impl.h:682
#10 QPointer<KNotification>::QPointer(KNotification*) (p=0x55fed0dd39b0, this=0x7ffd7bf31a40) at /usr/include/qt5/QtCore/qpointer.h:62
#11 NotifyByPopupPrivate::sendNotificationToServer(KNotification*, KNotifyConfig const&, bool) (this=this@entry=0x55fed1131460, notification=notification@entry=0x55fed0dd39b0, notifyConfig_nocheck=..., update=update@entry=false) at /usr/src/debug/knotifications-5.73.0-1.2.x86_64/src/notifybypopup.cpp:217
#12 0x00007f9cb2585b52 in NotifyByPopup::notify(KNotification*, KNotifyConfig const&) (this=0x55fed0e93db0, notification=0x55fed0dd39b0, notifyConfig=...) at /usr/src/debug/knotifications-5.73.0-1.2.x86_64/src/notifybypopup.cpp:125
#13 0x00007f9cb25861d2 in operator() (watcher=<optimized out>, __closure=0x55fed10e5ae0) at /usr/src/debug/knotifications-5.73.0-1.2.x86_64/src/notifybypopup.cpp:370
#14 QtPrivate::FunctorCall<QtPrivate::IndexesList<0>, QtPrivate::List<QDBusPendingCallWatcher*>, void, NotifyByPopupPrivate::queryPopupServerCapabilities()::<lambda(QDBusPendingCallWatcher*)> >::call (arg=<optimized out>, f=...) at /usr/include/qt5/QtCore/qobjectdefs_impl.h:146
#15 QtPrivate::Functor<NotifyByPopupPrivate::queryPopupServerCapabilities()::<lambda(QDBusPendingCallWatcher*)>, 1>::call<QtPrivate::List<QDBusPendingCallWatcher*>, void> (arg=<optimized out>, f=...) at /usr/include/qt5/QtCore/qobjectdefs_impl.h:256
#17 QtPrivate::QFunctorSlotObject<NotifyByPopupPrivate::queryPopupServerCapabilities()::<lambda(QDBusPendingCallWatcher*)>, 1, QtPrivate::List<QDBusPendingCallWatcher*>, void>::impl(int, QtPrivate::QSlotObjectBase *, QObject *, void **, bool *) (which=<optimized out>, this_=0x55fed10e5ad0, r=<optimized out>, a=<optimized out>, ret=<optimized out>) at /usr/include/qt5/QtCore/qobjectdefs_impl.h:436
#18 0x00007f9cb1242116 in QtPrivate::QSlotObjectBase::call(QObject*, void**) (a=0x7ffd7bf31d30, r=0x55fed0e93db0, this=0x55fed10e5ad0) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#19 doActivate<false>(QObject*, int, void**) (sender=0x55fed0e940f0, signal_index=3, argv=argv@entry=0x7ffd7bf31d30) at kernel/qobject.cpp:3886
#20 0x00007f9cb123b470 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) (sender=<optimized out>, m=m@entry=0x7f9cb157a5e0 <QDBusPendingCallWatcher::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffd7bf31d30) at kernel/qobject.cpp:3946
#21 0x00007f9cb155aabf in QDBusPendingCallWatcher::finished(QDBusPendingCallWatcher*) (this=<optimized out>, _t1=<optimized out>) at .moc/moc_qdbuspendingcall.cpp:158
#22 0x00007f9cb1237b61 in QObject::event(QEvent*) (this=0x55fed0e940f0, e=0x7f9ca006e250) at kernel/qobject.cpp:1314
#23 0x00007f9cb1deb0cf in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=<optimized out>, receiver=0x55fed0e940f0, e=0x7f9ca006e250) at kernel/qapplication.cpp:3671
#24 0x00007f9cb120bc3a in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x55fed0e940f0, event=0x7f9ca006e250) at ../../include/QtCore/5.15.0/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:325
#25 0x00007f9cb120e661 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) (receiver=0x0, event_type=0, data=0x55fed0afb270) at kernel/qcoreapplication.cpp:1815
#26 0x00007f9cb12639f3 in postEventSourceDispatch(GSource*, GSourceFunc, gpointer) (s=0x55fed0c8e5f0) at kernel/qeventdispatcher_glib.cpp:277
#27 0x00007f9caf90f2b7 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#28 0x00007f9caf90f638 in  () at /usr/lib64/libglib-2.0.so.0
#29 0x00007f9caf90f6ef in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#30 0x00007f9cb126307f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x55fed0c91810, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#31 0x00007f9cb120a5fb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ffd7bf32100, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#32 0x00007f9cb1212860 in QCoreApplication::exec() () at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#33 0x000055fed08b7977 in main(int, char**) (argc=<optimized out>, argv=0x7ffd7bf321a8) at /usr/src/debug/kdeconnect-kde-20.08.0-2.2.x86_64/daemon/kdeconnectd.cpp:183
[Inferior 1 (process 19041) detached]

The reporter indicates this bug may be a duplicate of or related to bug 425231.

Possible duplicates by query: bug 425231, bug 398918.

Reported using DrKonqi