Bug 295109

Application: kmix (4)
KDE Platform Version: 4.8.00 (4.8.0
Qt Version: 4.8.0
Operating System: Linux 3.2.7-1.fc16.x86_64 x86_64
Distribution (Platform): Fedora RPMs

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

My computer has an HDMI sound output associated with my video board, without any output system attached to it, and a SoundBlaster board with speakers.  When I log in, many times the HDMI output is selected, and if I want sound I need to change it.  This time I clicked on the speaker in the systray and it came up showing 3 systems, the HDMI, the analog, and both simultaneously.  Each had an associated volume slider, and I clicked on the speaker at the end of the HDMI slider.  At that point Kmix crashed.

-- Backtrace:
Application: KMix (kmix), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
82	T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
[Current thread is 1 (Thread 0x7ff52253a840 (LWP 7397))]

Thread 2 (Thread 0x7ff50ce3c700 (LWP 7528)):
#0  0x0000003f50ce85c3 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x0000003f53444fd8 in g_main_context_poll (n_fds=1, fds=0x7ff508002400, priority=<optimized out>, timeout=-1, context=0x7ff5080009a0) at gmain.c:3402
#2  g_main_context_iterate (context=0x7ff5080009a0, block=<optimized out>, dispatch=1, self=<optimized out>) at gmain.c:3084
#3  0x0000003f5344549c in g_main_context_iteration (context=0x7ff5080009a0, may_block=1) at gmain.c:3152
#4  0x0000003f5c5a7dc6 in QEventDispatcherGlib::processEvents (this=0x7ff5080008c0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:426
#5  0x0000003f5c578182 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#6  0x0000003f5c5783d7 in QEventLoop::exec (this=0x7ff50ce3bd10, flags=...) at kernel/qeventloop.cpp:204
#7  0x0000003f5c478b27 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#8  0x0000003f5c557e7f in QInotifyFileSystemWatcherEngine::run (this=0x27fa840) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x0000003f5c47bb6b in QThreadPrivate::start (arg=0x27fa840) at thread/qthread_unix.cpp:298
#10 0x0000003f51807d90 in start_thread (arg=0x7ff50ce3c700) at pthread_create.c:309
#11 0x0000003f50cf0f5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 1 (Thread 0x7ff52253a840 (LWP 7397)):
[KCrash Handler]
#6  0x0000003f5fc549db in MDWSlider::toggleMuted (this=0x27be150) at /usr/src/debug/kdemultimedia-4.8.0/kmix/gui/mdwslider.cpp:909
#7  0x0000003f5fc589e5 in qt_static_metacall (_a=<optimized out>, _id=<optimized out>, _o=0x27be150, _c=<optimized out>) at /usr/src/debug/kdemultimedia-4.8.0/x86_64-redhat-linux-gnu/kmix/mdwslider.moc:86
#8  MDWSlider::qt_static_metacall (_o=0x27be150, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at /usr/src/debug/kdemultimedia-4.8.0/x86_64-redhat-linux-gnu/kmix/mdwslider.moc:78
#9  0x0000003f5c58cce1 in QMetaObject::activate (sender=0x27c32b0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fffe938d560) at kernel/qobject.cpp:3547
#10 0x0000003f6084d202 in QAbstractButton::clicked (this=<optimized out>, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:220
#11 0x0000003f6058f5be in QAbstractButtonPrivate::emitClicked (this=0x27c32e0) at widgets/qabstractbutton.cpp:546
#12 0x0000003f605908fb in QAbstractButtonPrivate::click (this=0x27c32e0) at widgets/qabstractbutton.cpp:539
#13 0x0000003f60590b6c in QAbstractButton::mouseReleaseEvent (this=0x27c32b0, e=0x7fffe938de40) at widgets/qabstractbutton.cpp:1121
#14 0x0000003f6064dcba in QToolButton::mouseReleaseEvent (this=<optimized out>, e=<optimized out>) at widgets/qtoolbutton.cpp:718
#15 0x0000003f6021a02a in QWidget::event (this=0x27c32b0, event=0x7fffe938de40) at kernel/qwidget.cpp:8361
#16 0x0000003f601c9994 in notify_helper (e=0x7fffe938de40, receiver=0x27c32b0, this=0x2305fb0) at kernel/qapplication.cpp:4550
#17 QApplicationPrivate::notify_helper (this=0x2305fb0, receiver=0x27c32b0, e=0x7fffe938de40) at kernel/qapplication.cpp:4522
#18 0x0000003f601cf0e3 in QApplication::notify (this=<optimized out>, receiver=0x27c32b0, e=0x7fffe938de40) at kernel/qapplication.cpp:4093
#19 0x0000003f63850eb6 in KApplication::notify (this=0x22ee960, receiver=0x27c32b0, event=0x7fffe938de40) at /usr/src/debug/kdelibs-4.8.0/kdeui/kernel/kapplication.cpp:311
#20 0x0000003f5c57904c in QCoreApplication::notifyInternal (this=0x22ee960, receiver=0x27c32b0, event=0x7fffe938de40) at kernel/qcoreapplication.cpp:876
#21 0x0000003f601ca962 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../src/corelib/kernel/qcoreapplication.h:231
#22 QApplicationPrivate::sendMouseEvent (receiver=0x27c32b0, event=0x7fffe938de40, alienWidget=0x27c32b0, nativeWidget=0x27405f0, buttonDown=0x27c32b0, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3161
#23 0x0000003f602469b1 in QETWidget::translateMouseEvent (this=0x27405f0, event=<optimized out>) at kernel/qapplication_x11.cpp:4454
#24 0x0000003f602451aa in QApplication::x11ProcessEvent (this=0x22ee960, event=0x7fffe938e700) at kernel/qapplication_x11.cpp:3641
#25 0x0000003f6026c97c in x11EventSourceDispatch (s=0x230af50, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:148
#26 0x0000003f53444acd in g_main_dispatch (context=0x2309c40) at gmain.c:2441
#27 g_main_context_dispatch (context=0x2309c40) at gmain.c:3011
#28 0x0000003f534452c8 in g_main_context_iterate (context=0x2309c40, block=<optimized out>, dispatch=1, self=<optimized out>) at gmain.c:3089
#29 0x0000003f5344549c in g_main_context_iteration (context=0x2309c40, may_block=1) at gmain.c:3152
#30 0x0000003f5c5a7d5f in QEventDispatcherGlib::processEvents (this=0x22ce3f0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#31 0x0000003f6026c66e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:207
#32 0x0000003f5c578182 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#33 0x0000003f5c5783d7 in QEventLoop::exec (this=0x7fffe938ead0, flags=...) at kernel/qeventloop.cpp:204
#34 0x0000003f5c57cdd5 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#35 0x0000003f5fc42432 in kdemain (argc=1, argv=0x7fffe938f058) at /usr/src/debug/kdemultimedia-4.8.0/kmix/apps/main.cpp:76
#36 0x0000003f50c2169d in __libc_start_main (main=0x400730 <main(int, char**)>, argc=1, ubp_av=0x7fffe938f058, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffe938f048) at libc-start.c:226
#37 0x0000000000400761 in _start ()

Reported using DrKonqi