Application: knetworkmanager (v0.9)
KDE Platform Version: 4.3.90 (KDE 4.3.90 (KDE 4.4 RC1))
Qt Version: 4.6.0
Operating System: Linux 2.6.31-17-generic i686
Distribution: Ubuntu 9.10

-- Information about the crash:
After switching on wireless on my laptop by pressing the corresponding wifi on button knetworkmanager didn't automatically connect to the internet. Hence, I tried to restart network-manager using
sudo restart network-manager
Then, knetworkmanager crashed. I was able to reproduce this behavior several times and it turns out that knetworkmanager actually crashes when network-manager is started.
[knetworkmanager and network-manager running]
sudo stop network-manager
sudo start network-manager
[crash]

I'm using KDE from the kubuntu ppa.

The crash can be reproduced some of the time.

 -- Backtrace:
Application: KNetworkManager (knetworkmanager), signal: Aborted
[KCrash Handler]
#6  0x00793422 in __kernel_vsyscall ()
#7  0x007be4d1 in *__GI_raise (sig=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#8  0x007c1932 in *__GI_abort () at abort.c:92
#9  0x007f4ee5 in __libc_message (do_abort=2, fmt=0x8b8578 "*** glibc detected *** %s: %s: 0x%s ***\n") at ../sysdeps/unix/sysv/linux/libc_fatal.c:189
#10 0x007feff1 in malloc_printerr (action=<value optimized out>, str=0x6 <Address 0x6 out of bounds>, ptr=0x98ed4f8) at malloc.c:6217
#11 0x00803836 in *__GI___libc_free (mem=0x6) at malloc.c:3677
#12 0x0815ea1d in qFree (ptr=0x98ed4f8) at global/qmalloc.cpp:60
#13 0x081ae8e0 in QString::free (d=0x98ed4f8) at tools/qstring.cpp:1108
#14 0x00dae163 in ~QString (first=0x98f9a98, second=0x98ed4e8) at /usr/include/qt4/QtCore/qstring.h:866
#15 compareDevices (first=0x98f9a98, second=0x98ed4e8) at /build/buildd/plasma-widget-networkmanagement-0.9~svn1029786+ag1/libs/service/sortedactivatablelist.cpp:264
#16 0x00dae21c in activatableLessThan (first=0x98f9a98, second=0x98ed4e8) at /build/buildd/plasma-widget-networkmanagement-0.9~svn1029786+ag1/libs/service/sortedactivatablelist.cpp:173
#17 0x00dae49d in qSortHelper<QList<Knm::Activatable*>::iterator, Knm::Activatable*, bool (*)(Knm::Activatable const*, Knm::Activatable const*)> (start=<value optimized out>, end=)
    at /usr/include/qt4/QtCore/qalgorithms.h:379
#18 0x00dae697 in qSort<QList<Knm::Activatable*>::iterator, bool (*)(Knm::Activatable const*, Knm::Activatable const*)> (this=0x98fda28, activatable=0x98f9a98)
    at /usr/include/qt4/QtCore/qalgorithms.h:204
#19 SortedActivatableList::handleAdd (this=0x98fda28, activatable=0x98f9a98) at /build/buildd/plasma-widget-networkmanagement-0.9~svn1029786+ag1/libs/service/sortedactivatablelist.cpp:100
#20 0x00d9cd03 in ActivatableList::addActivatableInternal (this=0x98b9d78, activatable=0x98f9a98)
    at /build/buildd/plasma-widget-networkmanagement-0.9~svn1029786+ag1/libs/service/activatablelist.cpp:94
#21 0x00d9cd9c in ActivatableList::addActivatable (this=0x98b9d78, activatable=0x6) at /build/buildd/plasma-widget-networkmanagement-0.9~svn1029786+ag1/libs/service/activatablelist.cpp:82
#22 0x00da0d95 in WirelessNetworkInterfaceActivatableProvider::handleAdd (this=0x98d03d8, addedConnection=0x98fb7a0)
    at /build/buildd/plasma-widget-networkmanagement-0.9~svn1029786+ag1/libs/service/wirelessnetworkinterfaceactivatableprovider.cpp:132
#23 0x00da10d9 in WirelessNetworkInterfaceActivatableProvider::networkAppeared (this=0x98d03d8, ssid=...)
    at /build/buildd/plasma-widget-networkmanagement-0.9~svn1029786+ag1/libs/service/wirelessnetworkinterfaceactivatableprovider.cpp:176
#24 0x00da1a89 in WirelessNetworkInterfaceActivatableProvider (this=0x98d03d8, connectionList=0x98acbb8, activatableList=0x98b9d78, interface=0x994db60, parent=0x98ef470, 
    __in_chrg=<value optimized out>, __vtt_parm=<value optimized out>)
    at /build/buildd/plasma-widget-networkmanagement-0.9~svn1029786+ag1/libs/service/wirelessnetworkinterfaceactivatableprovider.cpp:76
#25 0x00d9d56c in NetworkInterfaceMonitor::networkInterfaceAdded (this=0x98ef470, uni=...)
    at /build/buildd/plasma-widget-networkmanagement-0.9~svn1029786+ag1/libs/service/networkinterfacemonitor.cpp:71
#26 0x00d96a9b in NetworkInterfaceMonitor::qt_metacall (this=0x98ef470, _c=QMetaObject::InvokeMetaMethod, _id=4, _a=0xbfb4b9c8)
    at /build/buildd/plasma-widget-networkmanagement-0.9~svn1029786+ag1/obj-i486-linux-gnu/libs/service/moc_networkinterfacemonitor.cpp:69
#27 0x0826b11a in QMetaObject::metacall (object=0x98ef470, cl=2287, idx=4, argv=0xbfb4b9c8) at kernel/qmetaobject.cpp:237
#28 0x0827989b in QMetaObject::activate (sender=0x98d6a08, m=0xbc2560, local_signal_index=1, argv=0xbfb4b9c8) at kernel/qobject.cpp:3294
#29 0x00ba3ad3 in Solid::Control::NetworkManager::Notifier::networkInterfaceAdded (this=0x98d6a08, _t1=...) at ./networkmanager.moc:107
#30 0x00ba4566 in Solid::Control::NetworkManagerPrivate::_k_networkInterfaceAdded (this=0x98d6a08, uni=...) at ../../../../libs/solid/control/networkmanager.cpp:197
#31 0x00ba45e7 in Solid::Control::NetworkManagerPrivate::qt_metacall (this=0x98d6a08, _c=QMetaObject::InvokeMetaMethod, _id=10, _a=0xbfb4bb38) at ./networkmanager_p.moc:81
#32 0x0826b11a in QMetaObject::metacall (object=0x98d6a08, cl=2287, idx=10, argv=0xbfb4bb38) at kernel/qmetaobject.cpp:237
#33 0x0827989b in QMetaObject::activate (sender=0x98e82f0, m=0x2104a70, local_signal_index=1, argv=0xbfb4bb38) at kernel/qobject.cpp:3294
#34 0x020ec203 in NMNetworkManager::networkInterfaceAdded (this=0x98e82f0, _t1=...) at ./manager.moc:134
#35 0x020ecada in NMNetworkManager::deviceAdded (this=0x98e82f0, objpath=...) at ../../../solid/networkmanager-0.7/manager.cpp:199
#36 0x020f0a6d in NMNetworkManager::qt_metacall (this=0x98e82f0, _c=QMetaObject::InvokeMetaMethod, _id=20, _a=0xbfb4bcd8) at ./manager.moc:111
#37 0x0826b11a in QMetaObject::metacall (object=0x98e82f0, cl=2287, idx=20, argv=0xbfb4bcd8) at kernel/qmetaobject.cpp:237
#38 0x0827989b in QMetaObject::activate (sender=0x98e8b38, m=0x2105a80, local_signal_index=0, argv=0xbfb4bcd8) at kernel/qobject.cpp:3294
#39 0x020fb323 in OrgFreedesktopNetworkManagerInterface::DeviceAdded (this=0x98e8b38, _t1=...) at ./nm-manager-clientinterface.moc:155
#40 0x020fb895 in OrgFreedesktopNetworkManagerInterface::qt_metacall (this=0x98e8b38, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0xbfb4bf1c) at ./nm-manager-clientinterface.moc:102
#41 0x00c389f4 in QDBusConnectionPrivate::deliverCall (this=0x98b78b0, object=0x98e8b38, msg=..., metaTypes=..., slotIdx=5) at qdbusintegrator.cpp:904
#42 0x00c40cf7 in QDBusCallDeliveryEvent::placeMetaCall (this=0x9941d58, object=0x98e8b38) at qdbusintegrator_p.h:101
#43 0x082768ae in QObject::event (this=0x98e8b38, e=0x9941d58) at kernel/qobject.cpp:1260
#44 0x00eef19c in QApplicationPrivate::notify_helper (this=0x981dbc8, receiver=0x98e8b38, e=0x9941d58) at kernel/qapplication.cpp:4242
#45 0x00ef5df7 in QApplication::notify (this=0xbfb4c770, receiver=0x98e8b38, e=0x9941d58) at kernel/qapplication.cpp:3661
#46 0x002ed67a in KApplication::notify (this=0xbfb4c770, receiver=0x98e8b38, event=0x9941d58) at ../../kdeui/kernel/kapplication.cpp:302
#47 0x08265eab in QCoreApplication::notifyInternal (this=0xbfb4c770, receiver=0x98e8b38, event=0x9941d58) at kernel/qcoreapplication.cpp:704
#48 0x082688e3 in QCoreApplication::sendEvent (receiver=0x0, event_type=0, data=0x97fce38) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#49 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x97fce38) at kernel/qcoreapplication.cpp:1345
#50 0x08268a4d in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1238
#51 0x082920df in QCoreApplication::sendPostedEvents (s=0x981fd20) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#52 postEventSourceDispatch (s=0x981fd20) at kernel/qeventdispatcher_glib.cpp:276
#53 0x06688e88 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#54 0x0668c730 in ?? () from /lib/libglib-2.0.so.0
#55 0x0668c863 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#56 0x08291bd5 in QEventDispatcherGlib::processEvents (this=0x981d7e8, flags=...) at kernel/qeventdispatcher_glib.cpp:407
#57 0x00facb75 in QGuiEventDispatcherGlib::processEvents (this=0x981d7e8, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#58 0x082644c9 in QEventLoop::processEvents (this=0xbfb4c6d4, flags=) at kernel/qeventloop.cpp:149
#59 0x0826491a in QEventLoop::exec (this=0xbfb4c6d4, flags=...) at kernel/qeventloop.cpp:201
#60 0x08268b0f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#61 0x00eef237 in QApplication::exec () at kernel/qapplication.cpp:3570
#62 0x08052905 in main (argc=1, argv=0xbfb4c8c4) at /build/buildd/plasma-widget-networkmanagement-0.9~svn1029786+ag1/monolithic/main.cpp:45

Possible duplicates by query: bug 220452, bug 187667.

Reported using DrKonqi