Application that crashed: krunner
Version of the application: 0.1
KDE Version: 4.3.4 (KDE 4.3.4)
Qt Version: 4.6.0
Operating System: Linux 2.6.31-gentoo-r4-x86_64-gcc4.2.2 x86_64

What I was doing when the application crashed:
Title says it all.  All of the code on this x86_64 Gentoo system was compiled with -O2 -march=native and -ggdb.

 -- Backtrace:
Application: Run Command Interface (kdeinit4), signal: Segmentation fault
Traceback (most recent call last):
  File "/usr/share/gdb/auto-load/usr/lib64/libgobject-2.0.so.0.2200.3-gdb.py", line 9, in <module>
    from gobject import register
  File "/usr/share/glib-2.0/gdb/gobject.py", line 3, in <module>
    import gdb.backtrace
ImportError: No module named backtrace
The current source language is "auto; currently asm".
[KCrash Handler]
#5  qVariantToHelper<QString> (this=0x0) at kernel/qvariant.cpp:2061
#6  QVariant::toString (this=0x0) at kernel/qvariant.cpp:2093
#7  0x00007f2634839ed1 in Solid::Backends::Hal::HalDevice::property (this=<value optimized out>, key=...)
    at /var/tmp/portage/kde-base/kdelibs-4.3.4/work/kdelibs-4.3.4/solid/solid/backends/hal/haldevice.cpp:281
#8  0x00007f2634837cbb in Solid::Backends::Hal::HalDevice::queryDeviceInterface (this=<value optimized out>, type=<value optimized out>)
    at /var/tmp/portage/kde-base/kdelibs-4.3.4/work/kdelibs-4.3.4/solid/solid/backends/hal/haldevice.cpp:348
#9  0x00007f263480ed4c in Solid::Predicate::matches (this=0x1d31f70, device=...) at /var/tmp/portage/kde-base/kdelibs-4.3.4/work/kdelibs-4.3.4/solid/solid/predicate.cpp:237
#10 0x00007f263480ecd4 in Solid::Predicate::matches (this=0x1d32280, device=...) at /var/tmp/portage/kde-base/kdelibs-4.3.4/work/kdelibs-4.3.4/solid/solid/predicate.cpp:200
#11 0x00007f263480ed36 in Solid::Predicate::matches (this=0x1d31fe0, device=...) at /var/tmp/portage/kde-base/kdelibs-4.3.4/work/kdelibs-4.3.4/solid/solid/predicate.cpp:200
#12 0x00007f263480ed1c in Solid::Predicate::matches (this=0x1d27b40, device=...) at /var/tmp/portage/kde-base/kdelibs-4.3.4/work/kdelibs-4.3.4/solid/solid/predicate.cpp:197
#13 0x00007f263053c421 in KFilePlacesModel::Private::_k_deviceAdded (this=0x1d27b20, udi=...) at /var/tmp/portage/kde-base/kdelibs-4.3.4/work/kdelibs-4.3.4/kfile/kfileplacesmodel.cpp:316
#14 0x00007f263053df62 in KFilePlacesModel::qt_metacall (this=0x1d2b900, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7ffff1dcde30)
    at /var/tmp/portage/kde-base/kdelibs-4.3.4/work/kdelibs-4.3.4_build/kfile/kfileplacesmodel.moc:92
#15 0x00007f26399b0f83 in QMetaObject::activate (sender=0x1bf88c0, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x48) at kernel/qobject.cpp:3286
#16 0x00007f26348066a2 in Solid::DeviceNotifier::deviceAdded (this=0x0, _t1=<value optimized out>)
    at /var/tmp/portage/kde-base/kdelibs-4.3.4/work/kdelibs-4.3.4_build/solid/solid/devicenotifier.moc:87
#17 0x00007f26348085a3 in Solid::DeviceManagerPrivate::_k_deviceAdded (this=0x1bf88c0, udi=...) at /var/tmp/portage/kde-base/kdelibs-4.3.4/work/kdelibs-4.3.4/solid/solid/devicemanager.cpp:170
#18 0x00007f26348087cc in Solid::DeviceManagerPrivate::qt_metacall (this=0x1bf88c0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7ffff1dce030)
    at /var/tmp/portage/kde-base/kdelibs-4.3.4/work/kdelibs-4.3.4_build/solid/solid/devicemanager_p.moc:79
#19 0x00007f26399b0f83 in QMetaObject::activate (sender=0x1beef90, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x48) at kernel/qobject.cpp:3286
#20 0x00007f2634818b72 in Solid::Ifaces::DeviceManager::deviceAdded (this=0x0, _t1=<value optimized out>)
    at /var/tmp/portage/kde-base/kdelibs-4.3.4/work/kdelibs-4.3.4_build/solid/solid/ifaces/devicemanager.moc:87
#21 0x00007f263483b4fd in Solid::Backends::Hal::HalManager::qt_metacall (this=0x1beef90, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7ffff1dce110)
    at /var/tmp/portage/kde-base/kdelibs-4.3.4/work/kdelibs-4.3.4_build/solid/solid/backends/hal/halmanager.moc:77
#22 0x00007f263796f39c in QDBusConnectionPrivate::deliverCall (this=<value optimized out>, object=<value optimized out>, msg=..., metaTypes=<value optimized out>, slotIdx=<value optimized out>)
    at qdbusintegrator.cpp:904
#23 0x00007f2637975d3f in QDBusCallDeliveryEvent::placeMetaCall (this=0x7f2639cb1960, object=0x0) at qdbusintegrator_p.h:101
#24 0x00007f26399adf09 in QObject::event (this=0x1beef90, e=0x1b952a0) at kernel/qobject.cpp:1252
#25 0x00007f2636d24c3c in QApplicationPrivate::notify_helper (this=0x1ab3940, receiver=0x1beef90, e=0x1b952a0) at kernel/qapplication.cpp:4242
#26 0x00007f2636d2d47a in QApplication::notify (this=0x1ab36b0, receiver=<value optimized out>, e=0x1b952a0) at kernel/qapplication.cpp:4125
#27 0x00007f2637dcca66 in KApplication::notify (this=0x1ab36b0, receiver=0x1beef90, event=0x1b952a0) at /var/tmp/portage/kde-base/kdelibs-4.3.4/work/kdelibs-4.3.4/kdeui/kernel/kapplication.cpp:302
#28 0x00007f263999e33b in QCoreApplication::notifyInternal (this=0x1ab36b0, receiver=0x1beef90, event=0x1b952a0) at kernel/qcoreapplication.cpp:704
#29 0x00007f26399a0a86 in QCoreApplication::sendEvent (receiver=0x0, event_type=<value optimized out>, data=0x1a68a60) at kernel/qcoreapplication.h:215
#30 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=<value optimized out>, data=0x1a68a60) at kernel/qcoreapplication.cpp:1345
#31 0x00007f26399c7c43 in QCoreApplication::sendPostedEvents (s=<value optimized out>) at kernel/qcoreapplication.h:220
#32 postEventSourceDispatch (s=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:276
#33 0x00007f26355994cd in g_main_dispatch (context=0x1ab6040) at gmain.c:1960
#34 IA__g_main_context_dispatch (context=0x1ab6040) at gmain.c:2513
#35 0x00007f263559ce88 in g_main_context_iterate (context=0x1ab6040, block=<value optimized out>, dispatch=<value optimized out>, self=<value optimized out>) at gmain.c:2591
#36 0x00007f263559cfb0 in IA__g_main_context_iteration (context=0x1ab6040, may_block=1) at gmain.c:2654
#37 0x00007f26399c7783 in QEventDispatcherGlib::processEvents (this=0x1ab3250, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:407
#38 0x00007f2636dc208e in QGuiEventDispatcherGlib::processEvents (this=0x0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#39 0x00007f263999cc92 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#40 0x00007f263999d064 in QEventLoop::exec (this=0x7ffff1dcecd0, flags=) at kernel/qeventloop.cpp:201
#41 0x00007f26399a0d4b in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#42 0x00007f262cf6ef14 in kdemain (argc=<value optimized out>, argv=<value optimized out>) at /var/tmp/portage/kde-base/krunner-4.3.4/work/krunner-4.3.4/krunner/main.cpp:65
#43 0x00000000004071b5 in launch (argc=1, _name=<value optimized out>, args=<value optimized out>, cwd=<value optimized out>, envc=0, envs=<value optimized out>, reset_env=false, tty=0x0, 
    avoid_loops=false, startup_id_str=0x40a5fd "0") at /var/tmp/portage/kde-base/kdelibs-4.3.4/work/kdelibs-4.3.4/kinit/kinit.cpp:677
#44 0x0000000000407e70 in handle_launcher_request (sock=8, who=<value optimized out>) at /var/tmp/portage/kde-base/kdelibs-4.3.4/work/kdelibs-4.3.4/kinit/kinit.cpp:1169
#45 0x00000000004083b0 in handle_requests (waitForPid=6342240) at /var/tmp/portage/kde-base/kdelibs-4.3.4/work/kdelibs-4.3.4/kinit/kinit.cpp:1362
#46 0x0000000000408f51 in main (argc=2, argv=<value optimized out>, envp=<value optimized out>) at /var/tmp/portage/kde-base/kdelibs-4.3.4/work/kdelibs-4.3.4/kinit/kinit.cpp:1793

Reported using DrKonqi