Bug 297884

Application: kmix (4)
KDE Platform Version: 4.8.2 (4.8.2)
Qt Version: 4.8.1
Operating System: Linux 3.2.0-22-generic x86_64
Distribution: Ubuntu precise (development branch)

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

My laptop battery was low, so I plugged in the power cord, and then KMix immediately crashed.

-- Backtrace:
Application: KMix (kdeinit4), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fd42817c780 (LWP 2223))]

Thread 3 (Thread 0x7fd408dc8700 (LWP 2227)):
#0  0x00007fd42338f05d in __pthread_mutex_unlock_usercnt (mutex=<optimized out>, decr=<optimized out>) at pthread_mutex_unlock.c:52
#1  __pthread_mutex_unlock (mutex=0x7fd404000a60) at pthread_mutex_unlock.c:290
#2  0x00007fd422d065a1 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd422cca0d8 in g_main_context_acquire () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fd422ccaec4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fd422ccb124 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fd426ded426 in QEventDispatcherGlib::processEvents (this=0x7fd4040008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#7  0x00007fd426dbcc82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#8  0x00007fd426dbced7 in QEventLoop::exec (this=0x7fd408dc7dd0, flags=...) at kernel/qeventloop.cpp:204
#9  0x00007fd426cbbfa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#10 0x00007fd426d9c9ff in QInotifyFileSystemWatcherEngine::run (this=0xbad0b0) at io/qfilesystemwatcher_inotify.cpp:248
#11 0x00007fd426cbefcb in QThreadPrivate::start (arg=0xbad0b0) at thread/qthread_unix.cpp:298
#12 0x00007fd42338be9a in start_thread (arg=0x7fd408dc8700) at pthread_create.c:308
#13 0x00007fd4259aa4bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#14 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fd3ffffe700 (LWP 2230)):
#0  0x00007fd422cca0f0 in g_main_context_acquire () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fd422ccaec4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd422ccb124 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd426ded426 in QEventDispatcherGlib::processEvents (this=0x7fd3f80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007fd426dbcc82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fd426dbced7 in QEventLoop::exec (this=0x7fd3ffffddd0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007fd426cbbfa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007fd426d9c9ff in QInotifyFileSystemWatcherEngine::run (this=0xa35160) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007fd426cbefcb in QThreadPrivate::start (arg=0xa35160) at thread/qthread_unix.cpp:298
#9  0x00007fd42338be9a in start_thread (arg=0x7fd3ffffe700) at pthread_create.c:308
#10 0x00007fd4259aa4bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fd42817c780 (LWP 2223)):
[KCrash Handler]
#6  0x00007fd4144cce23 in MDWSlider::update (this=0xc65ab0) at ../../kmix/gui/mdwslider.cpp:1001
#7  0x00007fd4144c864b in ViewDockAreaPopup::refreshVolumeLevels (this=<optimized out>) at ../../kmix/gui/viewdockareapopup.cpp:168
#8  0x00007fd426dd2281 in QMetaObject::activate (sender=0xbbacb0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3547
#9  0x00007fd426dd2281 in QMetaObject::activate (sender=0xbcbc90, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3547
#10 0x00007fd4144a1b0c in Mixer_Backend::readSetFromHW (this=0xbcbc90) at ../../kmix/backends/mixer_backend.cpp:155
#11 0x00007fd4144b1df5 in sink_cb (c=<optimized out>, i=<optimized out>, eol=<optimized out>) at ../../kmix/backends/mixer_pulse.cpp:191
#12 0x00007fd416a0b944 in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#13 0x00007fd415d2d693 in ?? () from /usr/lib/x86_64-linux-gnu/libpulsecommon-1.1.so
#14 0x00007fd415d2da03 in pa_pdispatch_run () from /usr/lib/x86_64-linux-gnu/libpulsecommon-1.1.so
#15 0x00007fd416a01bdd in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#16 0x00007fd415d322a9 in ?? () from /usr/lib/x86_64-linux-gnu/libpulsecommon-1.1.so
#17 0x00007fd4167efab3 in ?? () from /usr/lib/x86_64-linux-gnu/libpulse-mainloop-glib.so.0
#18 0x00007fd422ccac9a in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007fd422ccb060 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007fd422ccb124 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007fd426ded426 in QEventDispatcherGlib::processEvents (this=0x875090, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#22 0x00007fd4261e8d6e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#23 0x00007fd426dbcc82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#24 0x00007fd426dbced7 in QEventLoop::exec (this=0x7fff827a6fc0, flags=...) at kernel/qeventloop.cpp:204
#25 0x00007fd426dc1f67 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#26 0x00007fd4144b93e2 in kdemain (argc=3, argv=0x8329d0) at ../../kmix/apps/main.cpp:76
#27 0x00000000004086a4 in launch (argc=3, _name=0x832928 "kmix", args=<optimized out>, cwd=0x0, envc=<optimized out>, envs=<optimized out>, reset_env=false, tty=0x0, avoid_loops=false, startup_id_str=0x40b31e "0") at ../../kinit/kinit.cpp:746
#28 0x0000000000409a16 in handle_launcher_request (sock=8, who=<optimized out>) at ../../kinit/kinit.cpp:1238
#29 0x0000000000409f47 in handle_requests (waitForPid=0) at ../../kinit/kinit.cpp:1431
#30 0x000000000040532f in main (argc=4, argv=0x7fff00000001, envp=0x7fff827a8730) at ../../kinit/kinit.cpp:1919

Possible duplicates by query: bug 297879, bug 297857, bug 297834, bug 297754, bug 297751.

Reported using DrKonqi