Application: k3b (2.0.2)
KDE Platform Version: 4.9.00
Qt Version: 4.8.1
Operating System: Linux 3.2.0-27-generic x86_64
Distribution: Ubuntu 12.04 LTS

-- Information about the crash:
Using KDE 4.9.00

When you open the dialog box to see the version of k3b and go through the tabs, the program does nothing strange, but when I close the dialog box unexpectedly closes the entire application and asks me to report the bug.

The crash can be reproduced some of the time.

-- Backtrace:
Application: K3b (k3b), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f2c0f457780 (LWP 13982))]

Thread 4 (Thread 0x7f2bf6313700 (LWP 13983)):
#0  0x00007f2c08e99b03 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f2c052f3036 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2c052f3164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2c0a565426 in QEventDispatcherGlib::processEvents (this=0x7f2bf00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007f2c0a534c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f2c0a534ed7 in QEventLoop::exec (this=0x7f2bf6312dd0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f2c0a433fa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007f2c0a5149ff in QInotifyFileSystemWatcherEngine::run (this=0x1865ad0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f2c0a436fcb in QThreadPrivate::start (arg=0x1865ad0) at thread/qthread_unix.cpp:298
#9  0x00007f2c05095e9a in start_thread (arg=0x7f2bf6313700) at pthread_create.c:308
#10 0x00007f2c08ea54bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f2beb62a700 (LWP 14003)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:215
#1  0x00007f2c0a435c98 in thread_sleep (ti=0x7f2beb629dd0) at thread/qthread_unix.cpp:435
#2  0x00007f2c0a4363f6 in QThread::sleep (secs=<optimized out>) at thread/qthread_unix.cpp:449
#3  0x00007f2c0ed3205a in K3b::MediaCache::PollThread::run() () from /usr/lib/libk3blib.so.6
#4  0x00007f2c0a436fcb in QThreadPrivate::start (arg=0x1959060) at thread/qthread_unix.cpp:298
#5  0x00007f2c05095e9a in start_thread (arg=0x7f2beb62a700) at pthread_create.c:308
#6  0x00007f2c08ea54bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f2be3fff700 (LWP 14029)):
#0  0x00007f2c0532e590 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f2c052f2851 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2c052f2f5b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2c052f3164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2c0a565426 in QEventDispatcherGlib::processEvents (this=0x7f2bd80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0x00007f2c0a534c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007f2c0a534ed7 in QEventLoop::exec (this=0x7f2be3ffedd0, flags=...) at kernel/qeventloop.cpp:204
#7  0x00007f2c0a433fa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#8  0x00007f2c0a5149ff in QInotifyFileSystemWatcherEngine::run (this=0x227cc60) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x00007f2c0a436fcb in QThreadPrivate::start (arg=0x227cc60) at thread/qthread_unix.cpp:298
#10 0x00007f2c05095e9a in start_thread (arg=0x7f2be3fff700) at pthread_create.c:308
#11 0x00007f2c08ea54bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f2c0f457780 (LWP 13982)):
[KCrash Handler]
#6  0x0000000000000210 in ?? ()
#7  0x00007f2c0a549b04 in QObject::disconnect (sender=0x255eec0, signal=0x2f32809 "rowsInserted(QModelIndex,int,int)", receiver=0x2567840, method=0x2f38779 "_k_slotRowsInserted(QModelIndex,int,int)") at kernel/qobject.cpp:2891
#8  0x00007f2c0af79d5f in ?? () from /usr/lib/libkdeui.so.5
#9  0x00007f2c0a536028 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<optimized out>, receiver=0x255d920, event=0x7fff8894f110) at kernel/qcoreapplication.cpp:986
#10 0x00007f2c0963b85f in notify_helper (e=0x7fff8894f110, receiver=0x255d920, this=0x1700a10) at kernel/qapplication.cpp:4555
#11 QApplicationPrivate::notify_helper (this=0x1700a10, receiver=0x255d920, e=0x7fff8894f110) at kernel/qapplication.cpp:4531
#12 0x00007f2c09640713 in QApplication::notify (this=0x7fff88950100, receiver=0x255d920, e=0x7fff8894f110) at kernel/qapplication.cpp:4420
#13 0x00007f2c0af9b456 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#14 0x00007f2c0a535e9c in QCoreApplication::notifyInternal (this=0x7fff88950100, receiver=0x255d920, event=0x7fff8894f110) at kernel/qcoreapplication.cpp:876
#15 0x00007f2c09b5630d in sendEvent (event=0x7fff8894f110, receiver=0x255d920) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#16 QAccessible::queryAccessibleInterface (object=0x255d920) at accessible/qaccessible.cpp:593
#17 0x00007f2c09b5c51d in QAccessible::updateAccessibility (o=<optimized out>, who=0, reason=QAccessible::ObjectDestroyed) at accessible/qaccessible_unix.cpp:102
#18 0x00007f2c0968674f in QWidget::~QWidget (this=0x255d920, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1679
#19 0x00007f2c09686a19 in QWidget::~QWidget (this=0x255d920, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1700
#20 0x00007f2c0a548935 in QObjectPrivate::deleteChildren (this=0x25639e0) at kernel/qobject.cpp:1908
#21 0x00007f2c09686740 in QWidget::~QWidget (this=0x2562000, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1676
#22 0x00007f2c0af13fee in ?? () from /usr/lib/libkdeui.so.5
#23 0x00007f2c0a548935 in QObjectPrivate::deleteChildren (this=0x255f470) at kernel/qobject.cpp:1908
#24 0x00007f2c09686740 in QWidget::~QWidget (this=0x255d040, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1676
#25 0x00007f2c09686a19 in QWidget::~QWidget (this=0x255d040, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1700
#26 0x00007f2c0a548935 in QObjectPrivate::deleteChildren (this=0x2478da0) at kernel/qobject.cpp:1908
#27 0x00007f2c09686740 in QWidget::~QWidget (this=0x24a1d30, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1676
#28 0x00007f2c09aa74b9 in QStackedWidget::~QStackedWidget (this=0x24a1d30, __in_chrg=<optimized out>) at widgets/qstackedwidget.cpp:193
#29 0x00007f2c0a548935 in QObjectPrivate::deleteChildren (this=0x24822d0) at kernel/qobject.cpp:1908
#30 0x00007f2c09686740 in QWidget::~QWidget (this=0x2471b30, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1676
#31 0x00007f2c09ab2fa9 in QTabWidget::~QTabWidget (this=0x2471b30, __in_chrg=<optimized out>) at widgets/qtabwidget.cpp:367
#32 0x00007f2c0a548935 in QObjectPrivate::deleteChildren (this=0x256d270) at kernel/qobject.cpp:1908
#33 0x00007f2c09686740 in QWidget::~QWidget (this=0x255c830, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1676
#34 0x00007f2c09686a19 in QWidget::~QWidget (this=0x255c830, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1700
#35 0x00007f2c0a548935 in QObjectPrivate::deleteChildren (this=0x2492800) at kernel/qobject.cpp:1908
#36 0x00007f2c09686740 in QWidget::~QWidget (this=0x2487b70, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1676
#37 0x00007f2c0af07789 in KAboutApplicationDialog::~KAboutApplicationDialog() () from /usr/lib/libkdeui.so.5
#38 0x00007f2c0b04656e in KHelpMenu::timerExpired() () from /usr/lib/libkdeui.so.5
#39 0x00007f2c0a54f446 in QObject::event (this=0x1d40b30, e=<optimized out>) at kernel/qobject.cpp:1195
#40 0x00007f2c0963b894 in notify_helper (e=0x2485060, receiver=0x1d40b30, this=0x1700a10) at kernel/qapplication.cpp:4559
#41 QApplicationPrivate::notify_helper (this=0x1700a10, receiver=0x1d40b30, e=0x2485060) at kernel/qapplication.cpp:4531
#42 0x00007f2c09640713 in QApplication::notify (this=0x7fff88950100, receiver=0x1d40b30, e=0x2485060) at kernel/qapplication.cpp:4420
#43 0x00007f2c0af9b456 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#44 0x00007f2c0a535e9c in QCoreApplication::notifyInternal (this=0x7fff88950100, receiver=0x1d40b30, event=0x2485060) at kernel/qcoreapplication.cpp:876
#45 0x00007f2c0a539c6a in sendEvent (event=0x2485060, receiver=0x1d40b30) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#46 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x16751f0) at kernel/qcoreapplication.cpp:1500
#47 0x00007f2c0a564f93 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#48 postEventSourceDispatch (s=<optimized out>) at kernel/qeventdispatcher_glib.cpp:279
#49 0x00007f2c052f2d53 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#50 0x00007f2c052f30a0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#51 0x00007f2c052f3164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#52 0x00007f2c0a5653bf in QEventDispatcherGlib::processEvents (this=0x1676ad0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#53 0x00007f2c096e3d5e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#54 0x00007f2c0a534c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#55 0x00007f2c0a534ed7 in QEventLoop::exec (this=0x7fff88950090, flags=...) at kernel/qeventloop.cpp:204
#56 0x00007f2c0a539f67 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#57 0x00000000004434d6 in ?? ()
#58 0x00007f2c08dd476d in __libc_start_main (main=0x441840, argc=1, ubp_av=0x7fff88950d48, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff88950d38) at libc-start.c:226
#59 0x0000000000443895 in _start ()

This bug may be a duplicate of or related to bug 276066.

Possible duplicates by query: bug 296373, bug 276066.

Reported using DrKonqi