Application: kmix (4.3)
KDE Platform Version: 4.10.1
Qt Version: 4.8.4
Operating System: Linux 3.8.3-201.fc18.x86_64 x86_64
Distribution: "Fedora release 18 (Spherical Cow)"

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

Moving stream from pci addon card to onboard sound card.

Does not happen with kmix 4.9.4

Distribution: Fedora 18 with updates-testing from today (13/03/18)
Kernel: 3.8.3-201.fc18.x86_64
Onboard: 00:1b.0 Audio device: Intel Corporation 7 Series/C210 Series Chipset Family High Definition Audio Controller (rev 04)

Addong: 03:01.0 Multimedia audio controller: Creative Labs SB Live! EMU10k1 (rev 07)

The crash can be reproduced every time.

-- Backtrace:
Application: KMix (kmix), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
81	T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
[Current thread is 1 (Thread 0x7fd76595e880 (LWP 3540))]

Thread 2 (Thread 0x7fd75080d700 (LWP 3541)):
#0  0x0000003082c0aacf in __pthread_mutex_unlock_usercnt (mutex=0x7fd74c000a60, decr=decr@entry=1) at pthread_mutex_unlock.c:52
#1  0x0000003082c0ab2a in __GI___pthread_mutex_unlock (mutex=<optimized out>) at pthread_mutex_unlock.c:297
#2  0x00000036db284dd1 in g_mutex_unlock (mutex=mutex@entry=0x7fd74c0009a0) at gthread-posix.c:229
#3  0x00000036db247612 in g_main_context_prepare (context=context@entry=0x7fd74c0009a0, priority=priority@entry=0x7fd75080cb78) at gmain.c:3020
#4  0x00000036db247c4b in g_main_context_iterate (context=context@entry=0x7fd74c0009a0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3270
#5  0x00000036db247e44 in g_main_context_iteration (context=0x7fd74c0009a0, may_block=1) at gmain.c:3351
#6  0x0000003995fa6126 in QEventDispatcherGlib::processEvents (this=0x7fd74c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#7  0x0000003995f7680f in QEventLoop::processEvents (this=this@entry=0x7fd75080ccd0, flags=...) at kernel/qeventloop.cpp:149
#8  0x0000003995f76a98 in QEventLoop::exec (this=0x7fd75080ccd0, flags=...) at kernel/qeventloop.cpp:204
#9  0x0000003995e78980 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:542
#10 0x0000003995f5703f in QInotifyFileSystemWatcherEngine::run (this=0x12cb510) at io/qfilesystemwatcher_inotify.cpp:256
#11 0x0000003995e7b95c in QThreadPrivate::start (arg=0x12cb510) at thread/qthread_unix.cpp:338
#12 0x0000003082c07d15 in start_thread (arg=0x7fd75080d700) at pthread_create.c:308
#13 0x00000030820f246d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:114

Thread 1 (Thread 0x7fd76595e880 (LWP 3540)):
[KCrash Handler]
#6  0x0000003995f8bff8 in QMetaObject::changeGuard (ptr=0x1293e20, o=0x0) at kernel/qobject.cpp:460
#7  0x00000030dde044bd in operator= (p=0x0, this=0x1293e20) at ../../src/corelib/kernel/qpointer.h:68
#8  QMenuPrivate::activateAction (this=0x1293b60, action=0x117d900, action_e=QAction::Trigger, self=true) at widgets/qmenu.cpp:1143
#9  0x0000003c47b008e0 in KMenu::mouseReleaseEvent (this=0x123b090, e=0x7fff6f2e5270) at /usr/src/debug/kdelibs-4.10.1/kdeui/widgets/kmenu.cpp:464
#10 0x00000030dda19f49 in QWidget::event (this=0x123b090, event=0x7fff6f2e5270) at kernel/qwidget.cpp:8375
#11 0x00000030dde0574b in QMenu::event (this=0x123b090, e=0x7fff6f2e5270) at widgets/qmenu.cpp:2481
#12 0x00000030dd9ca5cc in QApplicationPrivate::notify_helper (this=0xe68390, receiver=0x123b090, e=0x7fff6f2e5270) at kernel/qapplication.cpp:4562
#13 0x00000030dd9cf2ab in QApplication::notify (this=<optimized out>, receiver=0x123b090, e=0x7fff6f2e5270) at kernel/qapplication.cpp:4105
#14 0x0000003c47a473c6 in KApplication::notify (this=0xe4bdd0, receiver=0x123b090, event=0x7fff6f2e5270) at /usr/src/debug/kdelibs-4.10.1/kdeui/kernel/kapplication.cpp:311
#15 0x0000003995f77abe in QCoreApplication::notifyInternal (this=0xe4bdd0, receiver=0x123b090, event=0x7fff6f2e5270) at kernel/qcoreapplication.cpp:946
#16 0x00000030dd9cb40b in QApplicationPrivate::sendMouseEvent (receiver=0x123b090, event=0x7fff6f2e5270, alienWidget=0x0, nativeWidget=0x123b090, buttonDown=0x30de49e268 <qt_button_down>, lastMouseReceiver=..., spontaneous=true) at ../../src/corelib/kernel/qcoreapplication.h:231
#17 0x00000030dda45a3c in QETWidget::translateMouseEvent (this=0x123b090, event=<optimized out>) at kernel/qapplication_x11.cpp:4471
#18 0x00000030dda44901 in QApplication::x11ProcessEvent (this=0xe4bdd0, event=0x7fff6f2e59e0) at kernel/qapplication_x11.cpp:3660
#19 0x00000030dda6aa5c in x11EventSourceDispatch (s=s@entry=0xe6a570, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:148
#20 0x00000036db247a55 in g_main_dispatch (context=0xe65010) at gmain.c:2715
#21 g_main_context_dispatch (context=context@entry=0xe65010) at gmain.c:3219
#22 0x00000036db247d88 in g_main_context_iterate (context=context@entry=0xe65010, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3290
#23 0x00000036db247e44 in g_main_context_iteration (context=0xe65010, may_block=1) at gmain.c:3351
#24 0x0000003995fa6106 in QEventDispatcherGlib::processEvents (this=0xe2ab90, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#25 0x00000030dda6a73e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:207
#26 0x0000003995f7680f in QEventLoop::processEvents (this=this@entry=0x7fff6f2e5db0, flags=...) at kernel/qeventloop.cpp:149
#27 0x0000003995f76a98 in QEventLoop::exec (this=0x7fff6f2e5db0, flags=...) at kernel/qeventloop.cpp:204
#28 0x0000003995f7b888 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218
#29 0x00007fd765eaab9a in kdemain (argc=1, argv=0x7fff6f2e5ff8) at /usr/src/debug/kmix-4.10.1/apps/main.cpp:76
#30 0x0000003082021a05 in __libc_start_main (main=0x400800 <main(int, char**)>, argc=1, ubp_av=0x7fff6f2e5ff8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff6f2e5fe8) at libc-start.c:225
#31 0x0000000000400831 in _start ()

Possible duplicates by query: bug 315999, bug 314611, bug 313197, bug 311167.

Reported using DrKonqi