Bug 492378

Application: kdeconnectd (24.08.0)

Qt Version: 6.7.2
Frameworks Version: 6.5.0
Operating System: Linux 6.10.6-200.fc40.x86_64 x86_64
Windowing System: X11
Distribution: "Fedora Linux 40 (KDE Plasma)"
DrKonqi: 6.1.4 [CoredumpBackend]

-- Information about the crash:
KDE connect daemon crashes on its own when im not using it

The crash can be reproduced sometimes.

-- Backtrace:
Application: KDE Connect Daemon (kdeconnectd), signal: Segmentation fault
Content of s_kcrashErrorMessage: std::unique_ptr<char []> = {get() = <optimized out>}
[New LWP 3135]
[New LWP 3224]
[New LWP 3314]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Core was generated by `/usr/bin/kdeconnectd'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=11, no_tid=no_tid@entry=0) at pthread_kill.c:44
44	      return INTERNAL_SYSCALL_ERROR_P (ret) ? INTERNAL_SYSCALL_ERRNO (ret) : 0;
[Current thread is 1 (Thread 0x7f9e67bedb00 (LWP 3135))]

Cannot QML trace cores :(
[Current thread is 1 (Thread 0x7f9e67bedb00 (LWP 3135))]

Thread 3 (Thread 0x7f9e594006c0 (LWP 3314)):
#0  0x00007f9e6bf1c87d in __GI___poll (fds=fds@entry=0x7f9e593ff968, nfds=nfds@entry=1, timeout=timeout@entry=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f9e6a6d7072 in poll (__fds=0x7f9e593ff968, __nfds=1, __timeout=-1) at /usr/include/bits/poll2.h:39
#2  _xcb_conn_wait (c=c@entry=0x557f07edfb20, vector=vector@entry=0x0, count=count@entry=0x0, cond=<optimized out>) at /usr/src/debug/libxcb-1.17.0-1.fc40.x86_64/src/xcb_conn.c:510
#3  0x00007f9e6a6d8c8c in _xcb_conn_wait (c=0x557f07edfb20, cond=0x557f07edfb60, vector=0x0, count=0x0) at /usr/src/debug/libxcb-1.17.0-1.fc40.x86_64/src/xcb_conn.c:476
#4  xcb_wait_for_event (c=0x557f07edfb20) at /usr/src/debug/libxcb-1.17.0-1.fc40.x86_64/src/xcb_in.c:703
#5  0x00007f9e59f9ef08 in QXcbEventQueue::run (this=0x557f07ed9560) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/plugins/platforms/xcb/qxcbeventqueue.cpp:192
#6  0x00007f9e6c75463c in operator() (__closure=<optimized out>) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/thread/qthread_unix.cpp:326
#7  (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=<optimized out>) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/thread/qthread_unix.cpp:262
#8  QThreadPrivate::start (arg=0x557f07ed9560) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/thread/qthread_unix.cpp:285
#9  0x00007f9e6bea66d7 in start_thread (arg=<optimized out>) at pthread_create.c:447
#10 0x00007f9e6bf2a60c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 2 (Thread 0x7f9e59e006c0 (LWP 3224)):
#0  0x00007f9e6bf1c87d in __GI___poll (fds=0x557f085af910, nfds=4, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f9e6b3b5c34 in g_main_context_poll_unlocked (priority=2147483647, context=0x7f9e54000c80, timeout=<optimized out>, fds=0x557f085af910, n_fds=4) at ../glib/gmain.c:4521
#2  g_main_context_iterate_unlocked.isra.0 (context=context@entry=0x7f9e54000c80, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/gmain.c:4212
#3  0x00007f9e6b355383 in g_main_context_iteration (context=0x7f9e54000c80, may_block=1) at ../glib/gmain.c:4282
#4  0x00007f9e6c8850a3 in QEventDispatcherGlib::processEvents (this=0x7f9e54000b70, flags=...) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/kernel/qeventdispatcher_glib.cpp:394
#5  0x00007f9e6c5a3b03 in QEventLoop::exec (this=this@entry=0x7f9e59dffa20, flags=..., flags@entry=...) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/global/qflags.h:34
#6  0x00007f9e6c6b7e4f in QThread::exec (this=this@entry=0x7f9e6debfcc0 <QGlobalStatic<QtGlobalStatic::Holder<(anonymous namespace)::Q_QGS__q_manager> >::instance()::holder>) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/global/qflags.h:74
#7  0x00007f9e6de30e41 in QDBusConnectionManager::run (this=0x7f9e6debfcc0 <QGlobalStatic<QtGlobalStatic::Holder<(anonymous namespace)::Q_QGS__q_manager> >::instance()::holder>) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/dbus/qdbusconnectionmanager.cpp:144
#8  0x00007f9e6c75463c in operator() (__closure=<optimized out>) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/thread/qthread_unix.cpp:326
#9  (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=<optimized out>) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/thread/qthread_unix.cpp:262
#10 QThreadPrivate::start (arg=0x7f9e6debfcc0 <QGlobalStatic<QtGlobalStatic::Holder<(anonymous namespace)::Q_QGS__q_manager> >::instance()::holder>) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/thread/qthread_unix.cpp:285
#11 0x00007f9e6bea66d7 in start_thread (arg=<optimized out>) at pthread_create.c:447
#12 0x00007f9e6bf2a60c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 1 (Thread 0x7f9e67bedb00 (LWP 3135)):
[KCrash Handler]
#5  0x00007f9e6c70653a in QArrayDataPointer<QRingChunk>::constEnd (this=<optimized out>) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/tools/qarraydatapointer.h:127
#6  QList<QRingChunk>::end (this=<optimized out>) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/tools/qlist.h:615
#7  QList<QRingChunk>::constLast (this=<optimized out>) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/tools/qlist.h:636
#8  QRingBuffer::chop (this=0x0, bytes=16384) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/tools/qringbuffer.cpp:170
#9  0x00007f9e6c55a100 in QIODevicePrivate::QRingBufferRef::chop (this=0x557f0803ee30, bytes=16384) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/io/qiodevice_p.h:73
#10 QIODevicePrivate::read (this=0x557f0803eda0, data=0x7ffcfeef9647 "", maxSize=<optimized out>, peeking=false) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/io/qiodevice.cpp:1100
#11 0x00007f9e6c55b3a0 in QIODevice::readLineData (this=this@entry=0x557f082632f0, data=<optimized out>, data@entry=0x557f08272e90 "", maxSize=maxSize@entry=16384) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/io/qiodevice.cpp:1507
#12 0x00007f9e6c55b5fe in QIODevicePrivate::readLine (this=this@entry=0x557f0803eda0, data=0x557f08272e90 "", maxSize=16384, maxSize@entry=16385) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/io/qiodevice.cpp:1395
#13 0x00007f9e6c55b9f6 in QIODevice::readLine (this=<optimized out>, maxSize=9223372036854775781, maxSize@entry=0) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/tools/qarraydatapointer.h:119
#14 0x00007f9e6e261e75 in BluetoothLinkProvider::serverDataReceived (this=0x557f081bc5a0, peer=..., socket=...) at /usr/include/qt6/QtCore/qsharedpointer_impl.h:274
#15 0x00007f9e6e262724 in operator() (__closure=0x557f082641a0) at /usr/src/debug/kde-connect-24.08.0-1.fc40.x86_64/core/backends/bluetooth/bluetoothlinkprovider.cpp:259
#16 QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, BluetoothLinkProvider::serverNewConnection()::<lambda()> >::call (f=..., arg=<optimized out>) at /usr/include/qt6/QtCore/qobjectdefs_impl.h:137
#17 QtPrivate::FunctorCallable<BluetoothLinkProvider::serverNewConnection()::<lambda()> >::call<QtPrivate::List<>, void> (f=..., arg=<optimized out>) at /usr/include/qt6/QtCore/qobjectdefs_impl.h:345
#18 QtPrivate::QCallableObject<BluetoothLinkProvider::serverNewConnection()::<lambda()>, QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase *, QObject *, void **, bool *) (which=<optimized out>, this_=0x557f08264190, r=<optimized out>, a=<optimized out>, ret=<optimized out>) at /usr/include/qt6/QtCore/qobjectdefs_impl.h:555
#19 0x00007f9e6c5fc872 in QtPrivate::QSlotObjectBase::call (this=0x557f08264190, r=<optimized out>, a=0x7ffcfeef9988) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/kernel/qobjectdefs_impl.h:469
#20 doActivate<false> (sender=0x557f082632f0, signal_index=3, argv=0x7ffcfeef9988) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/kernel/qobject.cpp:4086
#21 0x00007f9e6c5fc872 in QtPrivate::QSlotObjectBase::call (this=0x557f0824a4a0, r=<optimized out>, a=0x7ffcfeef9a68) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/kernel/qobjectdefs_impl.h:469
#22 doActivate<false> (sender=0x557f081d2590, signal_index=5, argv=0x7ffcfeef9a68) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/kernel/qobject.cpp:4086
#23 0x00007f9e6c5f2b47 in QMetaObject::activate (sender=<optimized out>, m=m@entry=0x7f9e6e29bd60 <MultiplexChannelState::staticMetaObject>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x0) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/kernel/qobject.cpp:4146
#24 0x00007f9e6e24f35a in MultiplexChannelState::readyRead (this=<optimized out>) at /usr/src/debug/kde-connect-24.08.0-1.fc40.x86_64/redhat-linux-build/core/kdeconnectcore_autogen/include/moc_multiplexchannelstate.cpp:215
#25 MultiplexChannel::disconnect (this=0x557f082632f0) at /usr/src/debug/kde-connect-24.08.0-1.fc40.x86_64/core/backends/bluetooth/multiplexchannel.cpp:35
#26 0x00007f9e6c5fc872 in QtPrivate::QSlotObjectBase::call (this=0x557f081cf250, r=<optimized out>, a=0x7ffcfeef9b68) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/kernel/qobjectdefs_impl.h:469
#27 doActivate<false> (sender=0x557f081d2590, signal_index=8, argv=0x7ffcfeef9b68) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/kernel/qobject.cpp:4086
#28 0x00007f9e6c5f2b47 in QMetaObject::activate (sender=<optimized out>, m=m@entry=0x7f9e6e29bd60 <MultiplexChannelState::staticMetaObject>, local_signal_index=local_signal_index@entry=5, argv=argv@entry=0x0) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/kernel/qobject.cpp:4146
#29 0x00007f9e6e250d15 in MultiplexChannelState::disconnected (this=<optimized out>) at /usr/src/debug/kde-connect-24.08.0-1.fc40.x86_64/redhat-linux-build/core/kdeconnectcore_autogen/include/moc_multiplexchannelstate.cpp:234
#30 ConnectionMultiplexer::disconnected (this=0x557f081c5930) at /usr/src/debug/kde-connect-24.08.0-1.fc40.x86_64/core/backends/bluetooth/connectionmultiplexer.cpp:80
#31 0x00007f9e6c5fc872 in QtPrivate::QSlotObjectBase::call (this=0x557f07f13210, r=<optimized out>, a=0x7ffcfeef9c98) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/kernel/qobjectdefs_impl.h:469
#32 doActivate<false> (sender=0x557f08221720, signal_index=10, argv=0x7ffcfeef9c98) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/kernel/qobject.cpp:4086
#33 0x00007f9e6cb82dab in QBluetoothSocketPrivateBluez::abort (this=0x557f08247920) at /usr/src/debug/qt6-qtconnectivity-6.7.2-1.fc40.x86_64/src/bluetooth/qbluetoothsocket_bluez.cpp:381
#34 0x00007f9e6c5fcbe0 in doActivate<false> (sender=0x557f07f12da0, signal_index=3, argv=0x7ffcfeef9e00) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/kernel/qobject.cpp:4098
#35 0x00007f9e6c5f2b47 in QMetaObject::activate (sender=sender@entry=0x557f07f12da0, m=m@entry=0x7f9e6ca8afa0 <QSocketNotifier::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffcfeef9e00) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/kernel/qobject.cpp:4146
#36 0x00007f9e6c60a4cd in QSocketNotifier::activated (this=this@entry=0x557f07f12da0, _t1=..., _t2=<optimized out>, _t3=...) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/redhat-linux-build/src/corelib/Core_autogen/include/moc_qsocketnotifier.cpp:195
#37 0x00007f9e6c60acdb in QSocketNotifier::event (this=0x557f07f12da0, e=<optimized out>) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/kernel/qsocketnotifier.cpp:327
#38 0x00007f9e6d78b218 in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x557f07f12da0, e=0x7ffcfeef9f50) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/widgets/kernel/qapplication.cpp:3287
#39 0x00007f9e6c596dc8 in QCoreApplication::notifyInternal2 (receiver=0x557f07f12da0, event=0x7ffcfeef9f50) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/kernel/qcoreapplication.cpp:1142
#40 0x00007f9e6c59702d in QCoreApplication::sendEvent (receiver=<optimized out>, event=<optimized out>) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/kernel/qcoreapplication.cpp:1583
#41 0x00007f9e6c8862af in socketNotifierSourceDispatch (source=0x557f07f8e480) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/kernel/qeventdispatcher_glib.cpp:75
#42 0x00007f9e6b353e8c in g_main_dispatch (context=0x7f9e54000f00) at ../glib/gmain.c:3344
#43 g_main_context_dispatch_unlocked (context=0x7f9e54000f00) at ../glib/gmain.c:4152
#44 0x00007f9e6b3b5c98 in g_main_context_iterate_unlocked.isra.0 (context=context@entry=0x7f9e54000f00, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/gmain.c:4217
#45 0x00007f9e6b355383 in g_main_context_iteration (context=0x7f9e54000f00, may_block=1) at ../glib/gmain.c:4282
#46 0x00007f9e6c8850a3 in QEventDispatcherGlib::processEvents (this=0x557f07fdf050, flags=...) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/kernel/qeventdispatcher_glib.cpp:394
#47 0x00007f9e6c5a3b03 in QEventLoop::exec (this=this@entry=0x7ffcfeefa1f0, flags=..., flags@entry=...) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/global/qflags.h:34
#48 0x00007f9e6c59f9bc in QCoreApplication::exec () at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/global/qflags.h:74
#49 0x00007f9e6cdd67ed in QGuiApplication::exec () at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/gui/kernel/qguiapplication.cpp:1926
#50 0x00007f9e6d78b189 in QApplication::exec () at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/widgets/kernel/qapplication.cpp:2555
#51 0x0000557edff93378 in main (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/kde-connect-24.08.0-1.fc40.x86_64/daemon/kdeconnectd.cpp:196

Reported using DrKonqi