Application: kdeconnectd (21.04.1)
 (Compiled from sources)
Qt Version: 5.15.3
Frameworks Version: 5.82.0
Operating System: Linux 5.4.0-74-generic x86_64
Windowing System: X11
Drkonqi Version: 5.21.5
Distribution: KDE neon User Edition 5.21

-- Information about the crash:
- What I was doing when the application crashed:
After updating the system, using offline update through Discover. KDE Connect crashed when the desktop loaded up. Recieved a total of seven error widows that seemed to be duplicates of this one.

The reporter is unsure if this crash is reproducible.

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

[New LWP 1499]
[New LWP 1511]
[New LWP 1532]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007f4228eadaff in __GI___poll (fds=0x7ffcee6a6328, nfds=1, timeout=1000) at ../sysdeps/unix/sysv/linux/poll.c:29
[Current thread is 1 (Thread 0x7f4228c86d40 (LWP 1485))]

Thread 4 (Thread 0x7f422170f700 (LWP 1532)):
#0  0x00007f4228eadaff in __GI___poll (fds=0x7f4218004a60, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f422792236e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f42279224a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4229486b3b in QEventDispatcherGlib::processEvents (this=0x7f4218000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f422942adcb in QEventLoop::exec (this=this@entry=0x7f422170ece0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#5  0x00007f4229244bb2 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#6  0x00007f4229245d4c in QThreadPrivate::start (arg=0x5625b590b500) at thread/qthread_unix.cpp:329
#7  0x00007f4228371609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#8  0x00007f4228eba293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f4222927700 (LWP 1511)):
#0  0x00007f42294869f0 in postEventSourcePrepare (s=0x7f4214004bb0, timeout=0x7f4222926ae4) at kernel/qeventdispatcher_glib.cpp:252
#1  0x00007f42279218ef in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f422792229b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f42279224a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4229486b3b in QEventDispatcherGlib::processEvents (this=0x7f4214000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f422942adcb in QEventLoop::exec (this=this@entry=0x7f4222926cb0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#6  0x00007f4229244bb2 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#7  0x00007f4229db8f4b in ?? () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#8  0x00007f4229245d4c in QThreadPrivate::start (arg=0x7f4229e3cd80) at thread/qthread_unix.cpp:329
#9  0x00007f4228371609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#10 0x00007f4228eba293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f4224447700 (LWP 1499)):
#0  0x00007f4228eadaff in __GI___poll (fds=0x7f4224446be8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f4227473c1a in ?? () from /lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f422747590a in xcb_wait_for_event () from /lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f4224bcee88 in QXcbEventQueue::run (this=0x5625b578e630) at qxcbeventqueue.cpp:228
#4  0x00007f4229245d4c in QThreadPrivate::start (arg=0x5625b578e630) at thread/qthread_unix.cpp:329
#5  0x00007f4228371609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f4228eba293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f4228c86d40 (LWP 1485)):
[KCrash Handler]
#4  Device::reloadPlugins (this=this@entry=0x5625b596e130) at ./core/device.cpp:192
#5  0x00007f422aa33562 in Device::addLink (this=this@entry=0x5625b596e130, identityPacket=..., link=<optimized out>, link@entry=0x5625b5a253a0) at ./core/device.cpp:302
#6  0x00007f422aa26b73 in Daemon::onNewDeviceLink (this=0x7ffcee6a8a40, identityPacket=..., dl=0x5625b5a253a0) at ./core/daemon.cpp:206
#7  0x00007f42294632ee in QtPrivate::QSlotObjectBase::call (a=0x7ffcee6a6f10, r=0x7ffcee6a8a40, this=0x5625b59ee210) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#8  doActivate<false> (sender=0x5625b58d0a20, signal_index=3, argv=0x7ffcee6a6f10) at kernel/qobject.cpp:3886
#9  0x00007f422945c6b7 in QMetaObject::activate (sender=sender@entry=0x5625b58d0a20, m=m@entry=0x7f422aa4b880 <LinkProvider::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffcee6a6f10) at kernel/qobject.cpp:3946
#10 0x00007f422a9e8e48 in LinkProvider::onConnectionReceived (this=this@entry=0x5625b58d0a20, _t1=..., _t2=<optimized out>, _t2@entry=0x5625b5a253a0) at ./obj-x86_64-linux-gnu/core/kdeconnectcore_autogen/CSWKE6ESUK/moc_linkprovider.cpp:169
#11 0x00007f422a9f8ad8 in LanLinkProvider::addLink (this=this@entry=0x5625b58d0a20, deviceId=..., socket=<optimized out>, receivedPacket=receivedPacket@entry=0x5625b598ce00, connectionOrigin=connectionOrigin@entry=LanDeviceLink::Locally) at ./core/backends/lan/lanlinkprovider.cpp:627
#12 0x00007f422a9f932f in LanLinkProvider::encrypted (this=0x5625b58d0a20) at ./core/backends/lan/lanlinkprovider.cpp:372
#13 0x00007f42294632ee in QtPrivate::QSlotObjectBase::call (a=0x7ffcee6a7160, r=0x5625b58d0a20, this=0x5625b598daf0) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#14 doActivate<false> (sender=0x5625b5a03c60, signal_index=16, argv=0x7ffcee6a7160) at kernel/qobject.cpp:3886
#15 0x00007f422945c6b7 in QMetaObject::activate (sender=sender@entry=0x5625b5a03c60, m=m@entry=0x7f4228c7d0e0 <QSslSocket::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3946
#16 0x00007f4228bd92d4 in QSslSocket::encrypted (this=this@entry=0x5625b5a03c60) at .moc/moc_qsslsocket.cpp:317
#17 0x00007f4228c08923 in QSslSocketBackendPrivate::continueHandshake (this=0x5625b59d4ae0) at ssl/qsslsocket_openssl.cpp:1995
#18 0x00007f4228c0f100 in QSslSocketBackendPrivate::startHandshake (this=this@entry=0x5625b59d4ae0) at ssl/qsslsocket_openssl.cpp:1440
#19 0x00007f4228c0f656 in QSslSocketBackendPrivate::transmit (this=0x5625b59d4ae0) at ssl/qsslsocket_openssl.cpp:1114
#20 0x00007f4228be1cf0 in QSslSocket::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at ssl/qsslsocket.h:227
#21 0x00007f4229463320 in doActivate<false> (sender=0x5625b5a03ce0, signal_index=3, argv=0x7ffcee6a8410) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:395
#22 0x00007f422945c6b7 in QMetaObject::activate (sender=sender@entry=0x5625b5a03ce0, m=m@entry=0x7f42296c3300 <QIODevice::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3946
#23 0x00007f422935cb24 in QIODevice::readyRead (this=this@entry=0x5625b5a03ce0) at .moc/moc_qiodevice.cpp:190
#24 0x00007f4228ba58e4 in QAbstractSocketPrivate::emitReadyRead (this=this@entry=0x5625b5984ad0, channel=channel@entry=0) at socket/qabstractsocket.cpp:1323
#25 0x00007f4228ba5979 in QAbstractSocketPrivate::canReadNotification (this=0x5625b5984ad0) at socket/qabstractsocket.cpp:748
#26 0x00007f4228bb7c89 in QReadNotifier::event (this=<optimized out>, e=<optimized out>) at socket/qnativesocketengine.cpp:1274
#27 0x00007f4229faddc3 in QApplicationPrivate::notify_helper (this=this@entry=0x5625b578c5f0, receiver=receiver@entry=0x5625b59f8350, e=e@entry=0x7ffcee6a8720) at kernel/qapplication.cpp:3632
#28 0x00007f4229fb6bb8 in QApplication::notify (this=0x7ffcee6a8a00, receiver=0x5625b59f8350, e=0x7ffcee6a8720) at kernel/qapplication.cpp:3156
#29 0x00007f422942c2ca in QCoreApplication::notifyInternal2 (receiver=0x5625b59f8350, event=0x7ffcee6a8720) at ../../include/QtCore/5.15.3/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:325
#30 0x00007f4229487725 in socketNotifierSourceDispatch (source=0x5625b58ca7b0) at kernel/qeventdispatcher_glib.cpp:107
#31 0x00007f422792217d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007f4227922400 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007f42279224a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007f4229486b22 in QEventDispatcherGlib::processEvents (this=0x5625b58ca9b0, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#35 0x00007f422942adcb in QEventLoop::exec (this=this@entry=0x7ffcee6a8930, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#36 0x00007f4229432f84 in QCoreApplication::exec () at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#37 0x00005625b5199016 in main (argc=<optimized out>, argv=<optimized out>) at ./daemon/kdeconnectd.cpp:174
[Inferior 1 (process 1485) detached]

Reported using DrKonqi