Application: kcmshell4 (4.11.2)
KDE Platform Version: 4.11.2
Qt Version: 4.8.5
Operating System: Linux 3.11.6-4-desktop i686
Distribution: "openSUSE 13.1 (Bottle) (i586)"

-- Information about the crash:
- What I was doing when the application crashed:
I have two soundcards,and I want to change the master card to another.But when I open the audio settings it has crashed.
Probably the upgrading make it broken.

- Custom settings of the application:
OpenSuse13.1 i686
Two soundcards.One is Realtek hdaudio,another is SB Audigy.Now SB Audigy is the master.

The crash can be reproduced every time.

-- Backtrace:
Application: KDE 控制模块 (kcmshell4), signal: Segmentation fault
Using host libthread_db library "/lib/libthread_db.so.1".
[KCrash Handler]
#6  0xb7677fe6 in __strlen_sse2_bsf () from /lib/libc.so.6
#7  0xb6c1f0b8 in qstrlen (str=0x1 <Address 0x1 out of bounds>) at ../../src/corelib/tools/qbytearray.h:80
#8  QString::fromUtf8 (str=0x1 <Address 0x1 out of bounds>, size=size@entry=-1) at tools/qstring.cpp:4018
#9  0xb1ac3c37 in AudioSetup::updateCard (this=this@entry=0x9306de0, pInfo=pInfo@entry=0xbffa45f0) at /usr/src/debug/kde-runtime-4.11.2/phonon/kcm/audiosetup.cpp:383
#10 0xb1ac44c2 in card_cb (c=0x932fbf8, i=0xbffa45f0, eol=0, userdata=0x9306de0) at /usr/src/debug/kde-runtime-4.11.2/phonon/kcm/audiosetup.cpp:71
#11 0xb19e48e3 in ?? () from /usr/lib/libpulse.so.0
#12 0xb196dde3 in run_action (pd=0x9316580, r=0x91a90f0, command=2, ts=0x9377480) at pulsecore/pdispatch.c:279
#13 0xb196e1e8 in pa_pdispatch_run (pd=0x9316580, packet=0x93993f8, creds=0x9346750, userdata=0x932fbf8) at pulsecore/pdispatch.c:331
#14 0xb19d6924 in ?? () from /usr/lib/libpulse.so.0
#15 0xb1972cb9 in do_read (p=0x93465a8) at pulsecore/pstream.c:830
#16 do_pstream_read_write (p=0x93465a8) at pulsecore/pstream.c:185
#17 0xb195da7f in callback (m=0x9319bac, e=0x91627f0, fd=11, f=PA_IO_EVENT_INPUT, userdata=0x935ea08) at pulsecore/iochannel.c:160
#18 0xb19c4af7 in dispatch_func (source=0x9319b78, callback=0x0, userdata=0x0) at pulse/glib-mainloop.c:584
#19 0xb594d7ce in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#20 0xb594db78 in ?? () from /usr/lib/libglib-2.0.so.0
#21 0xb594dc38 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#22 0xb6d135ef in QEventDispatcherGlib::processEvents (this=this@entry=0x8fe95d0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#23 0xb629d51e in QGuiEventDispatcherGlib::processEvents (this=0x8fe95d0, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#24 0xb6ce2a03 in QEventLoop::processEvents (this=this@entry=0xbffa4a18, flags=...) at kernel/qeventloop.cpp:149
#25 0xb6ce2d29 in QEventLoop::exec (this=this@entry=0xbffa4a18, flags=...) at kernel/qeventloop.cpp:204
#26 0xb671e5d1 in QDialog::exec (this=this@entry=0x9143d90) at dialogs/qdialog.cpp:562
#27 0xb77abff9 in kdemain (_argc=2, _argv=0xbffa4be4) at /usr/src/debug/kde-runtime-4.11.2/kcmshell/main.cpp:297
#28 0x080485bb in main (argc=2, argv=0xbffa4be4) at /usr/src/debug/kde-runtime-4.11.2/build/kcmshell/kcmshell4_dummy.cpp:3

Possible duplicates by query: bug 328519, bug 328384, bug 328344.

Reported using DrKonqi