Application: kmix (4)
KDE Platform Version: 4.8.00 (4.8.0
Qt Version: 4.7.4
Operating System: Linux 3.0.0-16-generic x86_64
Distribution: Ubuntu 11.10

-- Information about the crash:
- What I was doing when the application crashed:
  - trying to change the volume using the mouse wheel on the icon

- Things to note:
  - this reproducably happens after booting / wake up, but then after kmix was restarted, it works (seemingly) always.

The crash can be reproduced every time.

-- Backtrace:
Application: KMix (kmix), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fea36a157a0 (LWP 2876))]

Thread 3 (Thread 0x7fea17577700 (LWP 2886)):
#0  0x00007fea2cfeb1fd in __pthread_mutex_unlock_usercnt (mutex=<optimized out>, decr=<optimized out>) at pthread_mutex_unlock.c:52
#1  __pthread_mutex_unlock (mutex=0x224b608) at pthread_mutex_unlock.c:290
#2  0x00007fea2c47d3f5 in g_main_context_query () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fea2c47de6a in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fea2c47e429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fea330b5f3e in QEventDispatcherGlib::processEvents (this=0x20719a0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#6  0x00007fea33089cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007fea33089ef7 in QEventLoop::exec (this=0x7fea17576db0, flags=...) at kernel/qeventloop.cpp:201
#8  0x00007fea32fa127f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#9  0x00007fea3306ccbf in QInotifyFileSystemWatcherEngine::run (this=0x224a960) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x00007fea32fa3d05 in QThreadPrivate::start (arg=0x224a960) at thread/qthread_unix.cpp:331
#11 0x00007fea2cfe7efc in start_thread (arg=0x7fea17577700) at pthread_create.c:304
#12 0x00007fea3630389d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fea16b6b700 (LWP 2920)):
#0  0x00007fea362f7773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fea2c47df68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fea2c47e429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fea330b5f3e in QEventDispatcherGlib::processEvents (this=0x22d0bb0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007fea33089cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fea33089ef7 in QEventLoop::exec (this=0x7fea16b6adb0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007fea32fa127f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007fea3306ccbf in QInotifyFileSystemWatcherEngine::run (this=0x22cf2f0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007fea32fa3d05 in QThreadPrivate::start (arg=0x22cf2f0) at thread/qthread_unix.cpp:331
#9  0x00007fea2cfe7efc in start_thread (arg=0x7fea16b6b700) at pthread_create.c:304
#10 0x00007fea3630389d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fea36a157a0 (LWP 2876)):
[KCrash Handler]
#6  0x00007fea366161fa in MDWSlider::increaseOrDecreaseVolume (this=0x22c23f0, decrease=false) at ../../kmix/gui/mdwslider.cpp:948
#7  0x00007fea36616375 in MDWSlider::eventFilter (this=<optimized out>, obj=<optimized out>, e=<optimized out>) at ../../kmix/gui/mdwslider.cpp:1165
#8  0x00007fea3308ac88 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<optimized out>, receiver=0x22c23f0, event=0x7fffdb2ea530) at kernel/qcoreapplication.cpp:902
#9  0x00007fea33d0543f in notify_helper (e=0x7fffdb2ea530, receiver=0x22c23f0, this=0x1e7d800) at kernel/qapplication.cpp:4482
#10 QApplicationPrivate::notify_helper (this=0x1e7d800, receiver=0x22c23f0, e=0x7fffdb2ea530) at kernel/qapplication.cpp:4458
#11 0x00007fea33d0ab65 in QApplication::notify (this=<optimized out>, receiver=0x22c23f0, e=0x7fffdb2ea530) at kernel/qapplication.cpp:4102
#12 0x00007fea35894ae6 in KApplication::notify (this=0x1e6e070, receiver=0x22c23f0, event=0x7fffdb2ea530) at ../../kdeui/kernel/kapplication.cpp:311
#13 0x00007fea3308aafc in QCoreApplication::notifyInternal (this=0x1e6e070, receiver=0x22c23f0, event=0x7fffdb2ea530) at kernel/qcoreapplication.cpp:787
#14 0x00007fea33d728a2 in sendSpontaneousEvent (event=0x7fffdb2ea530, receiver=0x22c23f0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#15 QETWidget::translateWheelEvent (this=<optimized out>, global_x=<optimized out>, global_y=<optimized out>, delta=120, buttons=..., modifiers=..., orient=Qt::Vertical) at kernel/qapplication_x11.cpp:4609
#16 0x00007fea33d85c5d in QETWidget::translateMouseEvent (this=0x22c0640, event=0x7fffdb2eae80) at kernel/qapplication_x11.cpp:4386
#17 0x00007fea33d8494e in QApplication::x11ProcessEvent (this=0x1e6e070, event=0x7fffdb2eae80) at kernel/qapplication_x11.cpp:3693
#18 0x00007fea33dad4a2 in x11EventSourceDispatch (s=0x1e814b0, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#19 0x00007fea2c47da5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007fea2c47e258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007fea2c47e429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007fea330b5ed6 in QEventDispatcherGlib::processEvents (this=0x1e49f40, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#23 0x00007fea33dad10e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#24 0x00007fea33089cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#25 0x00007fea33089ef7 in QEventLoop::exec (this=0x7fffdb2eb250, flags=...) at kernel/qeventloop.cpp:201
#26 0x00007fea3308e789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#27 0x00007fea36602cc2 in kdemain (argc=3, argv=0x7fffdb2eb7d8) at ../../kmix/apps/main.cpp:76
#28 0x00007fea3624330d in __libc_start_main (main=0x400630 <main(int, char**)>, argc=3, ubp_av=0x7fffdb2eb7d8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffdb2eb7c8) at libc-start.c:226
#29 0x0000000000400661 in _start ()

This bug may be a duplicate of or related to bug 290248.

Possible duplicates by query: bug 290248.

Reported using DrKonqi