Bug 298981

Application: kmix (4)
KDE Platform Version: 4.8.2 (4.8.2)
Qt Version: 4.8.1
Operating System: Linux 3.2.0-24-generic x86_64
Distribution: Ubuntu 12.04 LTS

-- Information about the crash:
- What I was doing when the application crashed:
Watching a video in vlc and pausing/resuming it.
Kmix crashed but the icon was still there and I could open it up. 
I had to disable and re-enable the audio stream before I got it working again

-- Backtrace:
Application: KMix (kmix), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f3d5d0bd780 (LWP 7328))]

Thread 3 (Thread 0x7f3d3dca3700 (LWP 7329)):
#0  0x00007f3d532f805d in __pthread_mutex_unlock_usercnt (mutex=<optimized out>, decr=<optimized out>) at pthread_mutex_unlock.c:52
#1  __pthread_mutex_unlock (mutex=0x7f3d38000a60) at pthread_mutex_unlock.c:290
#2  0x00007f3d527c9591 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3d5278d713 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f3d5278df1b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f3d5278e124 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f3d59708426 in QEventDispatcherGlib::processEvents (this=0x7f3d380008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#7  0x00007f3d596d7c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#8  0x00007f3d596d7ed7 in QEventLoop::exec (this=0x7f3d3dca2dd0, flags=...) at kernel/qeventloop.cpp:204
#9  0x00007f3d595d6fa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#10 0x00007f3d596b79ff in QInotifyFileSystemWatcherEngine::run (this=0xa2e220) at io/qfilesystemwatcher_inotify.cpp:248
#11 0x00007f3d595d9fcb in QThreadPrivate::start (arg=0xa2e220) at thread/qthread_unix.cpp:298
#12 0x00007f3d532f4e9a in start_thread (arg=0x7f3d3dca3700) at pthread_create.c:308
#13 0x00007f3d5c98d4bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#14 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f3d3d296700 (LWP 7330)):
#0  0x00007f3d5c981b03 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f3d5278dff6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3d5278e124 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3d59708426 in QEventDispatcherGlib::processEvents (this=0x7f3d2c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007f3d596d7c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f3d596d7ed7 in QEventLoop::exec (this=0x7f3d3d295dd0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f3d595d6fa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007f3d596b79ff in QInotifyFileSystemWatcherEngine::run (this=0x8a71d0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f3d595d9fcb in QThreadPrivate::start (arg=0x8a71d0) at thread/qthread_unix.cpp:298
#9  0x00007f3d532f4e9a in start_thread (arg=0x7f3d3d296700) at pthread_create.c:308
#10 0x00007f3d5c98d4bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f3d5d0bd780 (LWP 7328)):
[KCrash Handler]
#6  0x0000000000000000 in ?? ()
#7  0x00007f3d5ccade26 in MDWSlider::update (this=0xb87950) at ../../kmix/gui/mdwslider.cpp:1001
#8  0x00007f3d5cca964b in ViewDockAreaPopup::refreshVolumeLevels (this=<optimized out>) at ../../kmix/gui/viewdockareapopup.cpp:168
#9  0x00007f3d596ed281 in QMetaObject::activate (sender=0xacb730, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3547
#10 0x00007f3d596ed281 in QMetaObject::activate (sender=0xac4110, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3547
#11 0x00007f3d5cc82b0c in Mixer_Backend::readSetFromHW (this=0xac4110) at ../../kmix/backends/mixer_backend.cpp:155
#12 0x00007f3d5cc92df5 in sink_cb (c=<optimized out>, i=<optimized out>, eol=<optimized out>) at ../../kmix/backends/mixer_pulse.cpp:191
#13 0x00007f3d5b06a944 in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#14 0x00007f3d52cac693 in ?? () from /usr/lib/x86_64-linux-gnu/libpulsecommon-1.1.so
#15 0x00007f3d52caca03 in pa_pdispatch_run () from /usr/lib/x86_64-linux-gnu/libpulsecommon-1.1.so
#16 0x00007f3d5b060bdd in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#17 0x00007f3d52cb12a9 in ?? () from /usr/lib/x86_64-linux-gnu/libpulsecommon-1.1.so
#18 0x00007f3d5ae4eab3 in ?? () from /usr/lib/x86_64-linux-gnu/libpulse-mainloop-glib.so.0
#19 0x00007f3d5278dc9a in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f3d5278e060 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f3d5278e124 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f3d597083bf in QEventDispatcherGlib::processEvents (this=0x6a3ad0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#23 0x00007f3d5a3f2d6e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#24 0x00007f3d596d7c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#25 0x00007f3d596d7ed7 in QEventLoop::exec (this=0x7fffe86cf8d0, flags=...) at kernel/qeventloop.cpp:204
#26 0x00007f3d596dcf67 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#27 0x00007f3d5cc9a3e2 in kdemain (argc=1, argv=0x7fffe86cfe58) at ../../kmix/apps/main.cpp:76
#28 0x00007f3d5c8bc76d in __libc_start_main (main=0x400630 <main(int, char**)>, argc=1, ubp_av=0x7fffe86cfe58, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffe86cfe48) at libc-start.c:226
#29 0x0000000000400661 in _start ()

Possible duplicates by query: bug 298964, bug 298957, bug 298926, bug 298885, bug 298757.

Reported using DrKonqi