Version:            (using KDE 4.2.4)
OS:                Linux
Installed from:    Ubuntu Packages

I am running a user space application  (lwip based) that is adding a tap device on startup and obviously removing it when exiting.

Anytime this tap device is added or removed, the plasma application is crashing (in the network management applet).

plasma is getting restarted automatically so it is not critical but it is still annoying to see it disappear for a few secs.

here is the trace I get:

Cette pile des appels apparaît être inutilisable.
C'est probablement dû au fait que votre paquetage a été construit d'une manière qui empêche de créer des piles d'appels corrects, ou que le cadre de pile a été sérieusement corrompu dans l'incident.

[Thread debugging using libthread_db enabled]
[New Thread 0xb3df1730 (LWP 371)]
[New Thread 0xa7bd2b90 (LWP 373)]
[New Thread 0xa850fb90 (LWP 372)]
0xb80cb430 in __kernel_vsyscall ()
[Current thread is 0 (LWP 371)]

Thread 3 (Thread 0xa850fb90 (LWP 372)):
#0  0xb80cb430 in __kernel_vsyscall ()
#1  0xb520b0e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb641a2ed in __pthread_cond_wait (cond=0x98113f0, mutex=0x98113d8) at forward.c:139
#3  0xb66069b2 in QWaitCondition::wait (this=0x97d3198, mutex=0x97d3194, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  0xb7a85152 in QHostInfoAgent::run (this=0x97d3188) at kernel/qhostinfo.cpp:260
#5  0xb660596e in QThreadPrivate::start (arg=0x97d3188) at thread/qthread_unix.cpp:189
#6  0xb52074ff in start_thread (arg=0xa850fb90) at pthread_create.c:297
#7  0xb640b49e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 2 (Thread 0xa7bd2b90 (LWP 373)):
#0  0xb80cb430 in __kernel_vsyscall ()
#1  0xb520b0e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb641a2ed in __pthread_cond_wait (cond=0x97c1c40, mutex=0x97c1c28) at forward.c:139
#3  0xb66069b2 in QWaitCondition::wait (this=0x97abff8, mutex=0x97abff4, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  0xa8600b9a in RenderThread::run (this=0x97abfec) at /build/buildd/kdebase-workspace-4.2.4/plasma/wallpapers/image/renderthread.cpp:91
#5  0xb660596e in QThreadPrivate::start (arg=0x97abfec) at thread/qthread_unix.cpp:189
#6  0xb52074ff in start_thread (arg=0xa7bd2b90) at pthread_create.c:297
#7  0xb640b49e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 1 (Thread 0xb3df1730 (LWP 371)):
#0  0xb80cb430 in __kernel_vsyscall ()
#1  0xb63c67a6 in nanosleep () from /lib/tls/i686/cmov/libc.so.6
#2  0xb63c65be in __sleep (seconds=0) at ../sysdeps/unix/sysv/linux/sleep.c:138
#3  0xb786cd82 in KCrash::startDrKonqi (argv=0xbffe7c44, argc=17) at /build/buildd/kde4libs-4.2.4/kdeui/util/kcrash.cpp:412
#4  0xb786d744 in KCrash::defaultCrashHandler (sig=11) at /build/buildd/kde4libs-4.2.4/kdeui/util/kcrash.cpp:337
#5  <signal handler called>
#6  0xa869c1ad in ?? () from /usr/lib/kde4/plasma_applet_networkmanagement.so
#7  0xa86ae7dd in ?? () from /usr/lib/kde4/plasma_applet_networkmanagement.so
#8  0xa8699bfb in ?? () from /usr/lib/kde4/plasma_applet_networkmanagement.so
#9  0xb670fca8 in QMetaObject::activate (sender=0x9840ab0, from_signal_index=5, to_signal_index=5, argv=0x0) at kernel/qobject.cpp:3069
#10 0xb6710932 in QMetaObject::activate (sender=0x9840ab0, m=0xa86cbfe0, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3143
#11 0xa86989d7 in ?? () from /usr/lib/kde4/plasma_applet_networkmanagement.so
#12 0xa869e54b in ?? () from /usr/lib/kde4/plasma_applet_networkmanagement.so
#13 0xa8699b23 in ?? () from /usr/lib/kde4/plasma_applet_networkmanagement.so
#14 0xa8699bba in ?? () from /usr/lib/kde4/plasma_applet_networkmanagement.so
#15 0xb670fca8 in QMetaObject::activate (sender=0x971a1f8, from_signal_index=7, to_signal_index=7, argv=0xbffe86e8) at kernel/qobject.cpp:3069
#16 0xb6710932 in QMetaObject::activate (sender=0x971a1f8, m=0xa8791e44, local_signal_index=0, argv=0xbffe86e8) at kernel/qobject.cpp:3143
#17 0xa878ab59 in NetworkManagerSettings::connectionAdded () from /usr/lib/libknmdbus.so.4
#18 0xa878c68f in NetworkManagerSettings::onConnectionAdded () from /usr/lib/libknmdbus.so.4
#19 0xa878c8ad in NetworkManagerSettings::qt_metacall () from /usr/lib/libknmdbus.so.4
#20 0xb670fca8 in QMetaObject::activate (sender=0x971a1f8, from_signal_index=5, to_signal_index=5, argv=0xbffe887c) at kernel/qobject.cpp:3069
#21 0xb6710932 in QMetaObject::activate (sender=0x971a1f8, m=0xa8791df0, local_signal_index=0, argv=0xbffe887c) at kernel/qobject.cpp:3143
#22 0xa878a483 in OrgFreedesktopNetworkManagerSettingsInterface::NewConnection () from /usr/lib/libknmdbus.so.4
#23 0xa878a6da in OrgFreedesktopNetworkManagerSettingsInterface::qt_metacall () from /usr/lib/libknmdbus.so.4
#24 0xa878c80a in NetworkManagerSettings::qt_metacall () from /usr/lib/libknmdbus.so.4
#25 0xb6812d7a in QDBusConnectionPrivate::deliverCall (this=0x96ba070, object=0x971a1f8, msg=@0xa299d74, metaTypes=@0xa299d78, slotIdx=5) at qdbusintegrator.cpp:891
#26 0xb681b187 in QDBusCallDeliveryEvent::placeMetaCall (this=0xa299d48, object=0x971a1f8) at qdbusintegrator_p.h:101
#27 0xb670a3a0 in QObject::event (this=0x971a1f8, e=0xa299d48) at kernel/qobject.cpp:1118
#28 0xb69a6e9c in QApplicationPrivate::notify_helper (this=0x94fe1b0, receiver=0x971a1f8, e=0xa299d48) at kernel/qapplication.cpp:4084
#29 0xb69af19e in QApplication::notify (this=0x94e1530, receiver=0x971a1f8, e=0xa299d48) at kernel/qapplication.cpp:3631
#30 0xb77fce0d in KApplication::notify (this=0x94e1530, receiver=0x971a1f8, event=0xa299d48) at /build/buildd/kde4libs-4.2.4/kdeui/kernel/kapplication.cpp:307
#31 0xb66f9a3b in QCoreApplication::notifyInternal (this=0x94e1530, receiver=0x971a1f8, event=0xa299d48) at kernel/qcoreapplication.cpp:602
#32 0xb66fa695 in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x94c04b0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#33 0xb66fa88d in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1132
#34 0xb67257ef in postEventSourceDispatch (s=0x95002c0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#35 0xb5005b88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#36 0xb50090eb in ?? () from /usr/lib/libglib-2.0.so.0
#37 0xb5009268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#38 0xb6725438 in QEventDispatcherGlib::processEvents (this=0x94c3488, flags={i = -1073835896}) at kernel/qeventdispatcher_glib.cpp:323
#39 0xb6a48365 in QGuiEventDispatcherGlib::processEvents (this=0x94c3488, flags={i = -1073835848}) at kernel/qguieventdispatcher_glib.cpp:202
#40 0xb66f806a in QEventLoop::processEvents (this=0xbffe9130, flags={i = -1073835784}) at kernel/qeventloop.cpp:149
#41 0xb66f84aa in QEventLoop::exec (this=0xbffe9130, flags={i = -1073835720}) at kernel/qeventloop.cpp:200
#42 0xb66fa959 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:880
#43 0xb69a6d17 in QApplication::exec () at kernel/qapplication.cpp:3553
#44 0xb8071b56 in kdemain (argc=1, argv=0xbffe92e4) at /build/buildd/kdebase-workspace-4.2.4/plasma/shells/desktop/main.cpp:54
#45 0x08048712 in main (argc=-1469266264, argv=0x9823a40) at /build/buildd/kdebase-workspace-4.2.4/obj-i486-linux-gnu/plasma/shells/desktop/plasma_qgv_dummy.cpp:3
#0  0xb80cb430 in __kernel_vsyscall ()