Bug 304535

Application: kmix (4)
KDE Platform Version: 4.8.2 (4.8.2) (Compiled from sources)
Qt Version: 4.8.1
Operating System: Linux 3.4.2 x86_64

-- Information about the crash:
- What I was doing when the application crashed:
KMix suddenly crashed when I closed its popup window with master channel by clicking on systray icon.

-- Backtrace:
Application: KMix (kdeinit4), signal: Segmentation fault
Using host libthread_db library "/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f6b270be760 (LWP 24748))]

Thread 3 (Thread 0x7f6afa27f710 (LWP 24751)):
#0  0x00007fff113e59df in clock_gettime ()
#1  0x00007f6b202bd05f in *__GI_clock_gettime (clock_id=1, tp=0x7f6afa27eb60) at ../sysdeps/unix/clock_gettime.c:100
#2  0x00007f6b258e37f9 in do_gettime (frac=<optimized out>, sec=<optimized out>) at tools/qelapsedtimer_unix.cpp:123
#3  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#4  0x00007f6b259e22b7 in updateCurrentTime (this=<optimized out>) at kernel/qeventdispatcher_unix.cpp:343
#5  QTimerInfoList::timerWait (this=0x1, tm=...) at kernel/qeventdispatcher_unix.cpp:450
#6  0x00007f6b259de6f6 in timerSourcePrepareHelper (timeout=<optimized out>, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:136
#7  timerSourcePrepare (source=<optimized out>, timeout=0x7f6afa27ec3c) at kernel/qeventdispatcher_glib.cpp:169
#8  0x00007f6b20005d0a in g_main_context_prepare () from /usr/lib/libglib-2.0.so.0
#9  0x00007f6b200067f2 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#10 0x00007f6b200070f4 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#11 0x00007f6b259de4e6 in QEventDispatcherGlib::processEvents (this=0x2106760, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#12 0x00007f6b259a3b12 in QEventLoop::processEvents (this=<optimized out>, flags=<error reading variable: DWARF-2 expression error: DW_OP_reg operations must be used either alone or in conjunction with DW_OP_piece or DW_OP_bit_piece.>) at kernel/qeventloop.cpp:149
#13 0x00007f6b259a3f3d in QEventLoop::exec (this=0x7f6afa27ede0, flags=<error reading variable: DWARF-2 expression error: DW_OP_reg operations must be used either alone or in conjunction with DW_OP_piece or DW_OP_bit_piece.>) at kernel/qeventloop.cpp:204
#14 0x00007f6b25876248 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#15 0x00007f6b2597b620 in QInotifyFileSystemWatcherEngine::run (this=0x2103490) at io/qfilesystemwatcher_inotify.cpp:248
#16 0x00007f6b25879179 in QThreadPrivate::start (arg=0x2103490) at thread/qthread_unix.cpp:298
#17 0x00007f6b255cfaca in start_thread (arg=<optimized out>) at pthread_create.c:297
#18 0x00007f6b23a6058d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 2 (Thread 0x7f6afeaf7710 (LWP 24753)):
#0  0x00007f6b255d36cc in __pthread_mutex_unlock_usercnt (mutex=<optimized out>, decr=<optimized out>) at pthread_mutex_unlock.c:52
#1  __pthread_mutex_unlock (mutex=0x20879e8) at pthread_mutex_unlock.c:290
#2  0x00007f6b20005cfe in g_main_context_prepare () from /usr/lib/libglib-2.0.so.0
#3  0x00007f6b200067f2 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#4  0x00007f6b200070f4 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#5  0x00007f6b259de4e6 in QEventDispatcherGlib::processEvents (this=0x1f98700, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0x00007f6b259a3b12 in QEventLoop::processEvents (this=<optimized out>, flags=<error reading variable: DWARF-2 expression error: DW_OP_reg operations must be used either alone or in conjunction with DW_OP_piece or DW_OP_bit_piece.>) at kernel/qeventloop.cpp:149
#7  0x00007f6b259a3f3d in QEventLoop::exec (this=0x7f6afeaf6e20, flags=<error reading variable: DWARF-2 expression error: DW_OP_reg operations must be used either alone or in conjunction with DW_OP_piece or DW_OP_bit_piece.>) at kernel/qeventloop.cpp:204
#8  0x00007f6b25876248 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#9  0x00007f6b25879179 in QThreadPrivate::start (arg=0x1e57910) at thread/qthread_unix.cpp:298
#10 0x00007f6b255cfaca in start_thread (arg=<optimized out>) at pthread_create.c:297
#11 0x00007f6b23a6058d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 1 (Thread 0x7f6b270be760 (LWP 24748)):
[KCrash Handler]
#6  0x00007f6b043dc013 in QString::isEmpty (this=0x20e1000) at /usr/include/QtCore/qstring.h:705
#7  0x00007f6b043e6f7a in KMixWindow::recreateGUI (this=0x1f23640, saveConfig=<optimized out>, mixerId=..., forceNewTab=<optimized out>) at /usr/src/packages/kde4/4.8.2/kdemultimedia-4.8.2/kmix/apps/kmix.cpp:663
#8  0x00007f6b043e783c in KMixWindow::plugged (this=0x1f23640, driverName=<optimized out>, udi=..., dev=...) at /usr/src/packages/kde4/4.8.2/kdemultimedia-4.8.2/kmix/apps/kmix.cpp:855
#9  0x00007f6b043e8171 in KMixWindow::qt_static_metacall (_o=0x1f23640, _c=<optimized out>, _id=22, _a=0x7fff113c4470) at /usr/src/packages/kde4/4.8.2/kdemultimedia-4.8.2/build/kmix/kmix.moc:131
#10 0x00007f6b259c52ce in QMetaObject::activate (sender=<optimized out>, m=<optimized out>, local_signal_index=<optimized out>, argv=0x22b3c50) at kernel/qobject.cpp:3547
#11 0x00007f6b0440d959 in KMixDeviceManager::plugged (this=0x20e1000, _t1=0x7f6b04418754 "ALSA", _t2=..., _t3=...) at /usr/src/packages/kde4/4.8.2/kdemultimedia-4.8.2/build/kmix/kmixdevicemanager.moc:109
#12 0x00007f6b0440dc72 in KMixDeviceManager::pluggedSlot (this=0x20ffc10, udi=...) at /usr/src/packages/kde4/4.8.2/kdemultimedia-4.8.2/kmix/core/kmixdevicemanager.cpp:134
#13 0x00007f6b259c52ce in QMetaObject::activate (sender=<optimized out>, m=<optimized out>, local_signal_index=<optimized out>, argv=0x22b3c50) at kernel/qobject.cpp:3547
#14 0x00007f6b0cf42382 in Solid::DeviceNotifier::deviceAdded (this=0x20e1000, _t1=...) at /usr/src/packages/kde4/4.8.2/kdelibs-4.8.2/build/solid/solid/devicenotifier.moc:101
#15 0x00007f6b259c52ce in QMetaObject::activate (sender=<optimized out>, m=<optimized out>, local_signal_index=<optimized out>, argv=0x22b3c50) at kernel/qobject.cpp:3547
#16 0x00007f6b0cf58f52 in Solid::Ifaces::DeviceManager::deviceAdded (this=0x20e1000, _t1=...) at /usr/src/packages/kde4/4.8.2/kdelibs-4.8.2/build/solid/solid/ifaces/devicemanager.moc:101
#17 0x00007f6b0cf732d7 in Solid::Backends::UDev::UDevManager::slotDeviceAdded (this=0x20ffd40, device=...) at /usr/src/packages/kde4/4.8.2/kdelibs-4.8.2/solid/solid/backends/udev/udevmanager.cpp:201
#18 0x00007f6b259c52ce in QMetaObject::activate (sender=<optimized out>, m=<optimized out>, local_signal_index=<optimized out>, argv=0x22b3c50) at kernel/qobject.cpp:3547
#19 0x00007f6b0cf7a422 in UdevQt::Client::deviceAdded (this=0x20e1000, _t1=...) at /usr/src/packages/kde4/4.8.2/kdelibs-4.8.2/build/solid/solid/udevqt.moc:146
#20 0x00007f6b0cf7ab61 in UdevQt::ClientPrivate::_uq_monitorReadyRead (this=0x21035b0, fd=<optimized out>) at /usr/src/packages/kde4/4.8.2/kdelibs-4.8.2/solid/solid/backends/shared/udevqtclient.cpp:105
#21 0x00007f6b259c52ce in QMetaObject::activate (sender=<optimized out>, m=<optimized out>, local_signal_index=<optimized out>, argv=0x22b3c50) at kernel/qobject.cpp:3547
#22 0x00007f6b25a220fe in QSocketNotifier::activated (this=0x20e1000, _t1=12) at .moc/debug-shared/moc_qsocketnotifier.cpp:103
#23 0x00007f6b259cb583 in QSocketNotifier::event (this=0x20ffb90, e=0x7fff113c5340) at kernel/qsocketnotifier.cpp:317
#24 0x00007f6b2490b8f0 in QApplicationPrivate::notify_helper (this=0x1e43f40, receiver=0x20ffb90, e=0x7fff113c5340) at kernel/qapplication.cpp:4554
#25 0x00007f6b249190f1 in QApplication::notify (this=0x1e36650, receiver=<optimized out>, e=0x7fff113c5340) at kernel/qapplication.cpp:4415
#26 0x00007f6b26a46571 in KApplication::notify (this=0x1e36650, receiver=0x20ffb90, event=0x7fff113c5340) at /usr/src/packages/kde4/4.8.2/kdelibs-4.8.2/kdeui/kernel/kapplication.cpp:311
#27 0x00007f6b259a4ffb in QCoreApplication::notifyInternal (this=0x1e36650, receiver=0x20ffb90, event=0x7fff113c5340) at kernel/qcoreapplication.cpp:876
#28 0x00007f6b259de96a in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#29 socketNotifierSourceDispatch (source=0x1e4cc00) at kernel/qeventdispatcher_glib.cpp:110
#30 0x00007f6b20004c12 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#31 0x00007f6b20006c68 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#32 0x00007f6b200070f4 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#33 0x00007f6b259de493 in QEventDispatcherGlib::processEvents (this=0x1e36310, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#34 0x00007f6b249da0ae in QGuiEventDispatcherGlib::processEvents (this=0x20e1000, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#35 0x00007f6b259a3b12 in QEventLoop::processEvents (this=<optimized out>, flags=<error reading variable: DWARF-2 expression error: DW_OP_reg operations must be used either alone or in conjunction with DW_OP_piece or DW_OP_bit_piece.>) at kernel/qeventloop.cpp:149
#36 0x00007f6b259a3f3d in QEventLoop::exec (this=0x7fff113c55c0, flags=<error reading variable: DWARF-2 expression error: DW_OP_reg operations must be used either alone or in conjunction with DW_OP_piece or DW_OP_bit_piece.>) at kernel/qeventloop.cpp:204
#37 0x00007f6b259aacf9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#38 0x00007f6b043e3e72 in kdemain (argc=<optimized out>, argv=<optimized out>) at /usr/src/packages/kde4/4.8.2/kdemultimedia-4.8.2/kmix/apps/main.cpp:76
#39 0x0000000000407cb3 in launch (argc=5, _name=<optimized out>, args=<optimized out>, cwd=<optimized out>, envc=<optimized out>, envs=<optimized out>, reset_env=false, tty=0x0, avoid_loops=false, startup_id_str=0x1ded18b "aclex;1344069489;119643;1810_TIME47062348") at /usr/src/packages/kde4/4.8.2/kdelibs-4.8.2/kinit/kinit.cpp:734
#40 0x00000000004088ec in handle_launcher_request (sock=8, who=<optimized out>) at /usr/src/packages/kde4/4.8.2/kdelibs-4.8.2/kinit/kinit.cpp:1226
#41 0x000000000040908a in handle_requests (waitForPid=<optimized out>) at /usr/src/packages/kde4/4.8.2/kdelibs-4.8.2/kinit/kinit.cpp:1419
#42 0x0000000000409587 in main (argc=4, argv=<optimized out>, envp=<optimized out>) at /usr/src/packages/kde4/4.8.2/kdelibs-4.8.2/kinit/kinit.cpp:1907

Reported using DrKonqi