Bug 341074

Application: kded4 (4.14.2)
KDE Platform Version: 4.14.2
Qt Version: 4.8.6
Operating System: Linux 3.13.0-39-generic x86_64
Distribution: Ubuntu 14.04.1 LTS

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

After startup, when the last icon was already displayed in the splash screen, KDE hung for a while. Then, when it switched to the desktop, some parts crashed and e.g. the systray icons are the old ones from early KDE4 days.

The crash can be reproduced sometimes.

-- Backtrace:
Application: KDE Daemon (kded4), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fb510d647c0 (LWP 3427))]

Thread 5 (Thread 0x7fb4f4fa8700 (LWP 3429)):
#0  0x00007fb50b6c70f0 in g_main_context_acquire () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fb50b6c7ea5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb50b6c80ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb50fa037be in QEventDispatcherGlib::processEvents (this=0x7fb4f00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#4  0x00007fb50f9d50af in QEventLoop::processEvents (this=this@entry=0x7fb4f4fa7e20, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fb50f9d53a5 in QEventLoop::exec (this=this@entry=0x7fb4f4fa7e20, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007fb50f8d1c5f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:537
#7  0x00007fb50f8d432f in QThreadPrivate::start (arg=0x1529d50) at thread/qthread_unix.cpp:349
#8  0x00007fb50bdaa182 in start_thread (arg=0x7fb4f4fa8700) at pthread_create.c:312
#9  0x00007fb50e5d6fbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 4 (Thread 0x7fb4e9151700 (LWP 3441)):
#0  0x00007fb50bdad7eb in __pthread_mutex_unlock_usercnt (decr=1, mutex=0x7fb4cc000a60) at pthread_mutex_unlock.c:57
#1  __GI___pthread_mutex_unlock (mutex=0x7fb4cc000a60) at pthread_mutex_unlock.c:310
#2  0x00007fb50b7099b1 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb50b6c7680 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fb50b6c7f03 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fb50b6c80ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fb50fa037be in QEventDispatcherGlib::processEvents (this=0x7fb4cc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#7  0x00007fb50f9d50af in QEventLoop::processEvents (this=this@entry=0x7fb4e9150de0, flags=...) at kernel/qeventloop.cpp:149
#8  0x00007fb50f9d53a5 in QEventLoop::exec (this=this@entry=0x7fb4e9150de0, flags=...) at kernel/qeventloop.cpp:204
#9  0x00007fb50f8d1c5f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:537
#10 0x00007fb4ee26f027 in KCupsConnection::run() () from /usr/lib/libkcupslib.so
#11 0x00007fb50f8d432f in QThreadPrivate::start (arg=0x159d9a0) at thread/qthread_unix.cpp:349
#12 0x00007fb50bdaa182 in start_thread (arg=0x7fb4e9151700) at pthread_create.c:312
#13 0x00007fb50e5d6fbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 3 (Thread 0x7fb4e8950700 (LWP 3442)):
#0  0x00007fb50b7098aa in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fb50b709d29 in g_private_get () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb50b6ed3a0 in g_thread_self () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb50b6c709c in g_main_context_acquire () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fb50b6c7ea5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fb50b6c80ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fb50fa037be in QEventDispatcherGlib::processEvents (this=0x7fb4c40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#7  0x00007fb50f9d50af in QEventLoop::processEvents (this=this@entry=0x7fb4e894fe20, flags=...) at kernel/qeventloop.cpp:149
#8  0x00007fb50f9d53a5 in QEventLoop::exec (this=this@entry=0x7fb4e894fe20, flags=...) at kernel/qeventloop.cpp:204
#9  0x00007fb50f8d1c5f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:537
#10 0x00007fb50f8d432f in QThreadPrivate::start (arg=0x158dd60) at thread/qthread_unix.cpp:349
#11 0x00007fb50bdaa182 in start_thread (arg=0x7fb4e8950700) at pthread_create.c:312
#12 0x00007fb50e5d6fbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7fb4e37fe700 (LWP 3443)):
#0  0x00007fb50bdac569 in __GI___pthread_mutex_lock (mutex=0x7fb4d0000a60) at ../nptl/pthread_mutex_lock.c:125
#1  0x00007fb50b709981 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb50b6c7bc6 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb50b6c8048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fb50b6c80ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fb50fa037be in QEventDispatcherGlib::processEvents (this=0x7fb4d00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#6  0x00007fb50f9d50af in QEventLoop::processEvents (this=this@entry=0x7fb4e37fdde0, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007fb50f9d53a5 in QEventLoop::exec (this=this@entry=0x7fb4e37fdde0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007fb50f8d1c5f in QThread::exec (this=this@entry=0x15ac140) at thread/qthread.cpp:537
#9  0x00007fb50f9b6823 in QInotifyFileSystemWatcherEngine::run (this=0x15ac140) at io/qfilesystemwatcher_inotify.cpp:265
#10 0x00007fb50f8d432f in QThreadPrivate::start (arg=0x15ac140) at thread/qthread_unix.cpp:349
#11 0x00007fb50bdaa182 in start_thread (arg=0x7fb4e37fe700) at pthread_create.c:312
#12 0x00007fb50e5d6fbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7fb510d647c0 (LWP 3427)):
[KCrash Handler]
#6  QList (l=<error reading variable: Cannot access memory at address 0x48>, this=this@entry=0x7fff02ce3170) at ../../include/QtCore/../../src/corelib/tools/qlist.h:122
#7  QDBusMessage::arguments (this=0x48) at qdbusmessage.cpp:707
#8  0x00007fb50cd902c3 in QDBusPendingReplyData::argumentAt (this=<optimized out>, index=0) at qdbuspendingreply.cpp:270
#9  0x00007fb4e987791c in QDBusPendingReply<unsigned int, void, void, void, void, void, void, void>::Select<0>::Type const QDBusPendingReply<unsigned int, void, void, void, void, void, void, void>::argumentAt<0>() const () from /usr/lib/libNetworkManagerQt.so.1
#10 0x00007fb4e9871c35 in NetworkManager::NetworkManagerPrivate::init() () from /usr/lib/libNetworkManagerQt.so.1
#11 0x00007fb4e9872f1d in NetworkManager::NetworkManagerPrivate::NetworkManagerPrivate() () from /usr/lib/libNetworkManagerQt.so.1
#12 0x00007fb4e98734bc in NetworkManager::notifier() () from /usr/lib/libNetworkManagerQt.so.1
#13 0x00007fb4e9b80dbe in SecretAgent::SecretAgent(QObject*) () from /usr/lib/kde4/kded_networkmanagement.so
#14 0x00007fb4e9b88d03 in NetworkManagementService::doInitialization() () from /usr/lib/kde4/kded_networkmanagement.so
#15 0x00007fb4e9b88cc8 in NetworkManagementService::finishInitialization() () from /usr/lib/kde4/kded_networkmanagement.so
#16 0x00007fb4e9b77e3a in ?? () from /usr/lib/kde4/kded_networkmanagement.so
#17 0x00007fb50f9ea87a in QMetaObject::activate (sender=0x15d31e0, m=m@entry=0x7fb50cfad760 <QDBusServiceWatcher::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7fff02ce3790) at kernel/qobject.cpp:3539
#18 0x00007fb50cd90732 in QDBusServiceWatcher::serviceRegistered (this=<optimized out>, _t1=...) at .moc/release-shared/moc_qdbusservicewatcher.cpp:145
#19 0x00007fb50cd915e7 in QDBusServiceWatcher::qt_metacall (this=0x15d31e0, _c=QMetaObject::InvokeMetaMethod, _id=3, _a=0x7fff02ce3960) at .moc/release-shared/moc_qdbusservicewatcher.cpp:106
#20 0x00007fb50cd581f6 in QDBusConnectionPrivate::deliverCall (this=0x139e2b0, object=0x15d31e0, msg=..., metaTypes=..., slotIdx=7) at qdbusintegrator.cpp:951
#21 0x00007fb50f9eec1e in QObject::event (this=0x15d31e0, e=<optimized out>) at kernel/qobject.cpp:1194
#22 0x00007fb50ed6fe2c in QApplicationPrivate::notify_helper (this=this@entry=0x1396a50, receiver=receiver@entry=0x15d31e0, e=e@entry=0x1626990) at kernel/qapplication.cpp:4567
#23 0x00007fb50ed764a0 in QApplication::notify (this=this@entry=0x7fff02ce4130, receiver=receiver@entry=0x15d31e0, e=e@entry=0x1626990) at kernel/qapplication.cpp:4353
#24 0x00007fb510755cca in KApplication::notify (this=0x7fff02ce4130, receiver=0x15d31e0, event=0x1626990) at ../../kdeui/kernel/kapplication.cpp:311
#25 0x00007fb50f9d64dd in QCoreApplication::notifyInternal (this=0x7fff02ce4130, receiver=receiver@entry=0x15d31e0, event=event@entry=0x1626990) at kernel/qcoreapplication.cpp:953
#26 0x00007fb50f9d9b3d in sendEvent (event=0x1626990, receiver=0x15d31e0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#27 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x1305150) at kernel/qcoreapplication.cpp:1577
#28 0x00007fb50f9d9fe3 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1470
#29 0x00007fb50fa03f83 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#30 postEventSourceDispatch (s=0x1395060) at kernel/qeventdispatcher_glib.cpp:287
#31 0x00007fb50b6c7e04 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007fb50b6c8048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007fb50b6c80ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007fb50fa037a1 in QEventDispatcherGlib::processEvents (this=0x13076d0, flags=...) at kernel/qeventdispatcher_glib.cpp:434
#35 0x00007fb50ee11bb6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#36 0x00007fb50f9d50af in QEventLoop::processEvents (this=this@entry=0x7fff02ce4000, flags=...) at kernel/qeventloop.cpp:149
#37 0x00007fb50f9d53a5 in QEventLoop::exec (this=this@entry=0x7fff02ce4000, flags=...) at kernel/qeventloop.cpp:204
#38 0x00007fb50f9dab79 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225
#39 0x00007fb50ed6e37c in QApplication::exec () at kernel/qapplication.cpp:3828
#40 0x00007fb4fa930d1b in kdemain (argc=1, argv=0x1370560) at ../../kded/kded.cpp:940
#41 0x00000000004083ee in launch (argc=argc@entry=1, _name=_name@entry=0x40afc7 "kded4", args=args@entry=0x0, cwd=cwd@entry=0x0, envc=envc@entry=0, envs=<optimized out>, envs@entry=0x0, reset_env=reset_env@entry=false, tty=tty@entry=0x0, avoid_loops=avoid_loops@entry=false, startup_id_str=startup_id_str@entry=0x40ae56 "0") at ../../kinit/kinit.cpp:738
#42 0x00000000004059a3 in main (argc=4, argv=<optimized out>, envp=0x7fff02ce4890) at ../../kinit/kinit.cpp:1853

Reported using DrKonqi