Created attachment 146399 [details] Full backtrace SUMMARY After scanning a for bluetooth devices, w/o connecting to any and logging out, the logout screen freezes after a second, though the cursor still reacts. ``` #5 std::__atomic_base<int>::operator++() (this=0x20) at /usr/include/qt5/QtCore/qbasicatomic.h:118 #6 QAtomicOps<int>::ref<int>(std::atomic<int>&) (_q_value=...) at /usr/include/qt5/QtCore/qatomic_cxx11.h:283 #7 QBasicAtomicInteger<int>::ref() (this=0x20) at /usr/include/qt5/QtCore/qbasicatomic.h:118 #8 QSharedPointer<BluezQt::Adapter>::ref() const (this=0x5582f2845550) at /usr/include/qt5/QtCore/qsharedpointer_impl.h:503 #9 QSharedPointer<BluezQt::Adapter>::QSharedPointer(QSharedPointer<BluezQt::Adapter> const&) (other=..., this=0x5582f2845550, this=<optimized out>, other=<optimized out>) at /usr/include/qt5/QtCore/qsharedpointer_impl.h:327 #10 QList<QSharedPointer<BluezQt::Adapter> >::node_construct(QList<QSharedPointer<BluezQt::Adapter> >::Node*, QSharedPointer<BluezQt::Adapter> const&) (this=0x7ffde8557700, t=..., n=0x5582f2644fd0) at /usr/include/qt5/QtCore/qlist.h:465 #11 QList<QSharedPointer<BluezQt::Adapter> >::append(QSharedPointer<BluezQt::Adapter> const&) (t=<optimized out>, this=<optimized out>) at /usr/include/qt5/QtCore/qlist.h:634 #12 QList<QSharedPointer<BluezQt::Adapter> >::append(QSharedPointer<BluezQt::Adapter> const&) (t=..., this=0x7ffde8557700) at /usr/include/qt5/QtCore/qlist.h:620 #13 QHash<QString, QSharedPointer<BluezQt::Adapter> >::values() const (this=0x5582f29cd820) at /usr/include/qt5/QtCore/qhash.h:726 #14 BluezQt::Manager::adapters() const (this=<optimized out>) at /usr/src/debug/kf5-bluez-qt-5.90.0-1.fc35.x86_64/src/manager.cpp:76 #15 0x00007ff7b105c791 in DeviceMonitor::saveState() (this=this@entry=0x5582f29ce660) at /usr/src/debug/bluedevil-5.23.5-1.fc35.x86_64/src/kded/devicemonitor.cpp:139 #16 0x00007ff7b105ca07 in DeviceMonitor::~DeviceMonitor() (this=0x5582f29ce660, this=<optimized out>) at /usr/src/debug/bluedevil-5.23.5-1.fc35.x86_64/src/kded/devicemonitor.cpp:73 #17 0x00007ff7b105ca3d in DeviceMonitor::~DeviceMonitor() (this=0x5582f29ce660, this=<optimized out>) at /usr/src/debug/bluedevil-5.23.5-1.fc35.x86_64/src/kded/devicemonitor.cpp:74 #18 0x00007ff7daf407ca in QObjectPrivate::deleteChildren() (this=this@entry=0x5582f29b6960) at kernel/qobject.cpp:2104 #19 0x00007ff7daf480cc in QObject::~QObject() (this=0x5582f29cead0, __in_chrg=<optimized out>) at kernel/qobject.cpp:1082 #20 0x00007ff7b105d5ed in BlueDevilDaemon::~BlueDevilDaemon() (this=0x5582f29cead0, this=<optimized out>) at /usr/src/debug/bluedevil-5.23.5-1.fc35.x86_64/src/kded/bluedevildaemon.cpp:112 #21 0x00005582f0be25b4 in Kded::~Kded() (this=0x5582f2674c60, this=<optimized out>) at /usr/src/debug/kf5-kded-5.90.0-1.fc35.x86_64/src/kded.cpp:101 #22 0x00005582f0be274d in Kded::~Kded() (this=0x5582f2674c60, this=<optimized out>) at /usr/src/debug/kf5-kded-5.90.0-1.fc35.x86_64/src/kded.cpp:103 #23 0x00005582f0be0ed8 in main(int, char**) (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/kf5-kded-5.90.0-1.fc35.x86_64/src/kded.cpp:773 ``` SOFTWARE/OS VERSIONS Operating System: Fedora Linux 35 KDE Plasma Version: 5.23.5 KDE Frameworks Version: 5.90.0 Qt Version: 5.15.2 Kernel Version: 5.16.5-200.fc35.x86_64 (64-bit) Graphics Platform: X11
Created attachment 146400 [details] Journalctl log: Relevant part before and after the crash
Crash is here: DeviceMonitor::~DeviceMonitor() { // Save state when tearing down to avoid getting out of sync if kded crashes // or is manually restarted saveState(); } This code has been removed for Plasma 5.24, so I think the crash is no longer possible.