Bug 381725

Summary: K3B crash on audio cd creation
Product: [Applications] k3b Reporter: valdur
Component: generalAssignee: k3b developers <k3b>
Status: RESOLVED WORKSFORME    
Severity: crash CC: michalm, paradox, trueg, zhaixiang
Priority: NOR Keywords: drkonqi
Version: 2.0.3   
Target Milestone: ---   
Platform: Ubuntu   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:
Attachments: New crash information added by DrKonqi

Description valdur 2017-06-27 13:15:25 UTC
Application: k3b (2.0.3)
KDE Platform Version: 4.14.16
Qt Version: 4.8.7
Operating System: Linux 4.4.0-79-generic x86_64
Distribution: Ubuntu 16.04.2 LTS

-- Information about the crash:
- What I was doing when the application crashed:
I tried to create  an audio CD from wav files. Progress bar did not even start to progress. Still K3B time counter continued until I cancelled it more than an hour later. Crash occured after that cancellation.

-- 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 0x7f07e158c940 (LWP 22343))]

Thread 5 (Thread 0x7f07a4986700 (LWP 22767)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f07dbdf9672 in _q_futex (val2=0, addr2=0x0, timeout=0x0, val=2, op=0, addr=0xfedbd0) at thread/qmutex_unix.cpp:99
#2  QMutexPrivate::wait (this=this@entry=0xfedbd0, timeout=timeout@entry=-1) at thread/qmutex_unix.cpp:113
#3  0x00007f07dbdf5925 in QMutex::lockInternal (this=<optimized out>) at thread/qmutex.cpp:450
#4  0x00007f07dbdf5a1b in QMutex::lock (this=<optimized out>) at thread/qmutex.cpp:177
#5  0x00007f07de1d66ac in K3b::Device::Device::usageLock (this=this@entry=0x101b290) at /build/k3b-P3O1MD/k3b-2.0.3/libk3bdevice/k3bdevice.cpp:3800
#6  0x00007f07de1deb92 in K3b::Device::Device::block (this=0x101b290, b=b@entry=false) at /build/k3b-P3O1MD/k3b-2.0.3/libk3bdevice/k3bdevice.cpp:1638
#7  0x00007f07e1106bfc in K3b::Device::DeviceHandler::run (this=0x1535480) at /build/k3b-P3O1MD/k3b-2.0.3/libk3b/tools/k3bdevicehandler.cpp:234
#8  0x00007f07e10f5db5 in K3b::Thread::run (this=<optimized out>) at /build/k3b-P3O1MD/k3b-2.0.3/libk3b/core/k3bthread.cpp:62
#9  0x00007f07dbdfae3c in QThreadPrivate::start (arg=0x2ee5ee0) at thread/qthread_unix.cpp:352
#10 0x00007f07d5ab86ba in start_thread (arg=0x7f07a4986700) at pthread_create.c:333
#11 0x00007f07da7c43dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f07c0cb2700 (LWP 22532)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f07dbdf9672 in _q_futex (val2=0, addr2=0x0, timeout=0x0, val=2, op=0, addr=0x2f684f0) at thread/qmutex_unix.cpp:99
#2  QMutexPrivate::wait (this=this@entry=0x2f684f0, timeout=timeout@entry=-1) at thread/qmutex_unix.cpp:113
#3  0x00007f07dbdf5925 in QMutex::lockInternal (this=this@entry=0x2f23628) at thread/qmutex.cpp:450
#4  0x00007f07dbdf9d1e in QMutex::lockInline (this=0x2f23628) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:190
#5  QMutexLocker::QMutexLocker (m=0x2f23628, this=<synthetic pointer>) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:109
#6  QThreadPrivate::finish (arg=arg@entry=0x2f1e3e0) at thread/qthread_unix.cpp:364
#7  0x00007f07dbdfae5b in __pthread_cleanup_class::~__pthread_cleanup_class (this=<synthetic pointer>, __in_chrg=<optimized out>) at /usr/include/pthread.h:561
#8  QThreadPrivate::start (arg=0x2f1e3e0) at thread/qthread_unix.cpp:316
#9  0x00007f07d5ab86ba in start_thread (arg=0x7f07c0cb2700) at pthread_create.c:333
#10 0x00007f07da7c43dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f07b1179700 (LWP 22449)):
#0  0x00007f07d681aa90 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f07d67d62ae in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f07d67d649c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f07dbf3b2ce in QEventDispatcherGlib::processEvents (this=0x7f07ac0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:452
#4  0x00007f07dbf0918f in QEventLoop::processEvents (this=this@entry=0x7f07b1178c40, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f07dbf094f5 in QEventLoop::exec (this=this@entry=0x7f07b1178c40, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f07dbdf8549 in QThread::exec (this=this@entry=0x1a1eeb0) at thread/qthread.cpp:538
#7  0x00007f07dbee9223 in QInotifyFileSystemWatcherEngine::run (this=0x1a1eeb0) at io/qfilesystemwatcher_inotify.cpp:265
#8  0x00007f07dbdfae3c in QThreadPrivate::start (arg=0x1a1eeb0) at thread/qthread_unix.cpp:352
#9  0x00007f07d5ab86ba in start_thread (arg=0x7f07b1179700) at pthread_create.c:333
#10 0x00007f07da7c43dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f07c4449700 (LWP 22345)):
#0  0x00007f07da7b424d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f07d68196f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f07d67d5e74 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f07d67d6330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f07d67d649c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f07dbf3b2ce in QEventDispatcherGlib::processEvents (this=0x7f07bc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:452
#6  0x00007f07dbf0918f in QEventLoop::processEvents (this=this@entry=0x7f07c4448c40, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f07dbf094f5 in QEventLoop::exec (this=this@entry=0x7f07c4448c40, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007f07dbdf8549 in QThread::exec (this=this@entry=0xeced40) at thread/qthread.cpp:538
#9  0x00007f07dbee9223 in QInotifyFileSystemWatcherEngine::run (this=0xeced40) at io/qfilesystemwatcher_inotify.cpp:265
#10 0x00007f07dbdfae3c in QThreadPrivate::start (arg=0xeced40) at thread/qthread_unix.cpp:352
#11 0x00007f07d5ab86ba in start_thread (arg=0x7f07c4449700) at pthread_create.c:333
#12 0x00007f07da7c43dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f07e158c940 (LWP 22343)):
[KCrash Handler]
#6  __memmove_ssse3_back () at ../sysdeps/x86_64/multiarch/memcpy-ssse3-back.S:1544
#7  0x00007f07dbe1af84 in memmove (__len=<optimized out>, __src=<optimized out>, __dest=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/string3.h:59
#8  QListData::remove (this=this@entry=0x2ef04a8, i=<optimized out>) at tools/qlist.cpp:347
#9  0x00007f07e10f5478 in QList<K3b::Job*>::removeAt (i=<optimized out>, this=0x2ef04a8) at /usr/include/qt4/QtCore/qlist.h:482
#10 QList<K3b::Job*>::removeOne (_t=@0x7ffc3a3f00a8: 0x2f1eee0, this=0x2ef04a8) at /usr/include/qt4/QtCore/qlist.h:800
#11 K3b::Job::unregisterSubJob (this=<optimized out>, job=job@entry=0x2f1eee0) at /build/k3b-P3O1MD/k3b-2.0.3/libk3b/core/k3bjob.cpp:291
#12 0x00007f07e10f55b8 in K3b::Job::jobFinished (this=this@entry=0x2f1eee0, success=success@entry=false) at /build/k3b-P3O1MD/k3b-2.0.3/libk3b/core/k3bjob.cpp:121
#13 0x00007f07e10f56b1 in K3b::Job::~Job (this=0x2f1eee0, __in_chrg=<optimized out>) at /build/k3b-P3O1MD/k3b-2.0.3/libk3b/core/k3bjob.cpp:65
#14 0x00007f07e1140c39 in K3b::CdrdaoWriter::~CdrdaoWriter (this=0x2f1eee0, __in_chrg=<optimized out>) at /build/k3b-P3O1MD/k3b-2.0.3/libk3b/projects/k3bcdrdaowriter.cpp:188
#15 0x00007f07dbf232b1 in QObjectPrivate::deleteChildren (this=this@entry=0x2ef06e0) at kernel/qobject.cpp:1935
#16 0x00007f07dbf25954 in QObject::~QObject (this=0x2ef0660, __in_chrg=<optimized out>) at kernel/qobject.cpp:954
#17 0x00007f07e10f565e in K3b::Job::~Job (this=0x2ef0660, __in_chrg=<optimized out>) at /build/k3b-P3O1MD/k3b-2.0.3/libk3b/core/k3bjob.cpp:57
#18 0x00007f07e1184a8a in K3b::AudioJob::~AudioJob (this=0x2ef0660, __in_chrg=<optimized out>) at /build/k3b-P3O1MD/k3b-2.0.3/libk3b/projects/audiocd/k3baudiojob.cpp:119
#19 K3b::AudioJob::~AudioJob (this=0x2ef0660, __in_chrg=<optimized out>) at /build/k3b-P3O1MD/k3b-2.0.3/libk3b/projects/audiocd/k3baudiojob.cpp:122
#20 0x00000000004c25cd in K3b::ProjectBurnDialog::slotStartClicked (this=0x2aa6ef0) at /build/k3b-P3O1MD/k3b-2.0.3/src/projects/k3bprojectburndialog.cpp:238
#21 0x000000000053d745 in K3b::InteractionDialog::slotStartClickedInternal (this=this@entry=0x2aa6ef0) at /build/k3b-P3O1MD/k3b-2.0.3/src/k3binteractiondialog.cpp:312
#22 0x000000000053e230 in K3b::InteractionDialog::qt_static_metacall (_o=0x2aa6ef0, _id=<optimized out>, _a=0x7ffc3a3f0610, _c=<optimized out>) at /build/k3b-P3O1MD/k3b-2.0.3/obj-x86_64-linux-gnu/src/k3binteractiondialog.moc:137
#23 0x00007f07dbf1f010 in QMetaObject::activate (sender=sender@entry=0x2aa3dd0, m=m@entry=0x7f07dbae7f60 <QAbstractButton::staticMetaObject>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x7ffc3a3f0610) at kernel/qobject.cpp:3567
#24 0x00007f07db672d12 in QAbstractButton::clicked (this=this@entry=0x2aa3dd0, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:219
#25 0x00007f07db3a82b3 in QAbstractButtonPrivate::emitClicked (this=this@entry=0x1c76630) at widgets/qabstractbutton.cpp:548
#26 0x00007f07db3a9664 in QAbstractButtonPrivate::click (this=this@entry=0x1c76630) at widgets/qabstractbutton.cpp:541
#27 0x00007f07db3a9774 in QAbstractButton::mouseReleaseEvent (this=0x2aa3dd0, e=0x7ffc3a3f0b80) at widgets/qabstractbutton.cpp:1123
#28 0x00007f07db0248d0 in QWidget::event (this=0x2aa3dd0, event=0x7ffc3a3f0b80) at kernel/qwidget.cpp:8775
#29 0x00007f07dafcdfdc in QApplicationPrivate::notify_helper (this=this@entry=0xd38f60, receiver=receiver@entry=0x2aa3dd0, e=e@entry=0x7ffc3a3f0b80) at kernel/qapplication.cpp:4570
#30 0x00007f07dafd50d6 in QApplication::notify (this=<optimized out>, receiver=0x2aa3dd0, e=0x7ffc3a3f0b80) at kernel/qapplication.cpp:4113
#31 0x00007f07dcbd264a in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#32 0x00007f07dbf0a90d in QCoreApplication::notifyInternal (this=0x7ffc3a3f2280, receiver=receiver@entry=0x2aa3dd0, event=event@entry=0x7ffc3a3f0b80) at kernel/qcoreapplication.cpp:955
#33 0x00007f07dafd46dd in QCoreApplication::sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#34 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x2aa3dd0, event=event@entry=0x7ffc3a3f0b80, alienWidget=alienWidget@entry=0x2aa3dd0, nativeWidget=nativeWidget@entry=0x2a04240, buttonDown=buttonDown@entry=0x7f07dbaf9368 <qt_button_down>, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3178
#35 0x00007f07db0523f2 in QETWidget::translateMouseEvent (this=this@entry=0x2a04240, event=event@entry=0x7ffc3a3f0ee0) at kernel/qapplication_x11.cpp:4638
#36 0x00007f07db051c83 in QApplication::x11ProcessEvent (this=0x7ffc3a3f2280, event=event@entry=0x7ffc3a3f0ee0) at kernel/qapplication_x11.cpp:3626
#37 0x00007f07db07b542 in x11EventSourceDispatch (s=0xd2db50, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#38 0x00007f07d67d6197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#39 0x00007f07d67d63f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#40 0x00007f07d67d649c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#41 0x00007f07dbf3b2ce in QEventDispatcherGlib::processEvents (this=0xcc1fb0, flags=...) at kernel/qeventdispatcher_glib.cpp:452
#42 0x00007f07db07b616 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#43 0x00007f07dbf0918f in QEventLoop::processEvents (this=this@entry=0x7ffc3a3f12d0, flags=...) at kernel/qeventloop.cpp:149
#44 0x00007f07dbf094f5 in QEventLoop::exec (this=this@entry=0x7ffc3a3f12d0, flags=...) at kernel/qeventloop.cpp:204
#45 0x00007f07db4b0a3c in QDialog::exec (this=this@entry=0x2aa6ef0) at dialogs/qdialog.cpp:562
#46 0x000000000053dd77 in K3b::InteractionDialog::exec (this=this@entry=0x2aa6ef0) at /build/k3b-P3O1MD/k3b-2.0.3/src/k3binteractiondialog.cpp:526
#47 0x00000000004c2058 in K3b::ProjectBurnDialog::execBurnDialog (this=this@entry=0x2aa6ef0, burn=burn@entry=true) at /build/k3b-P3O1MD/k3b-2.0.3/src/projects/k3bprojectburndialog.cpp:170
#48 0x00000000004bea3c in K3b::View::slotBurn (this=<optimized out>) at /build/k3b-P3O1MD/k3b-2.0.3/src/projects/k3bview.cpp:97
#49 0x00007f07dbf1f010 in QMetaObject::activate (sender=sender@entry=0x1a700a0, m=m@entry=0x7f07dbac4da0 <QAction::staticMetaObject>, local_signal_index=local_signal_index@entry=1, argv=argv@entry=0x7ffc3a3f14d0) at kernel/qobject.cpp:3567
#50 0x00007f07dafc7d62 in QAction::triggered (this=this@entry=0x1a700a0, _t1=false) at .moc/release-shared/moc_qaction.cpp:276
#51 0x00007f07dafc90b3 in QAction::activate (this=0x1a700a0, event=<optimized out>) at kernel/qaction.cpp:1257
#52 0x00007f07db3a9623 in QAbstractButtonPrivate::click (this=this@entry=0x28b5050) at widgets/qabstractbutton.cpp:530
#53 0x00007f07db3a9774 in QAbstractButton::mouseReleaseEvent (this=0x28b3560, e=0x7ffc3a3f1a50) at widgets/qabstractbutton.cpp:1123
#54 0x00007f07db46f73a in QToolButton::mouseReleaseEvent (this=<optimized out>, e=<optimized out>) at widgets/qtoolbutton.cpp:723
#55 0x00007f07db0248d0 in QWidget::event (this=0x28b3560, event=0x7ffc3a3f1a50) at kernel/qwidget.cpp:8775
#56 0x00007f07dafcdfdc in QApplicationPrivate::notify_helper (this=this@entry=0xd38f60, receiver=receiver@entry=0x28b3560, e=e@entry=0x7ffc3a3f1a50) at kernel/qapplication.cpp:4570
#57 0x00007f07dafd50d6 in QApplication::notify (this=<optimized out>, receiver=0x28b3560, e=0x7ffc3a3f1a50) at kernel/qapplication.cpp:4113
#58 0x00007f07dcbd264a in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#59 0x00007f07dbf0a90d in QCoreApplication::notifyInternal (this=0x7ffc3a3f2280, receiver=receiver@entry=0x28b3560, event=event@entry=0x7ffc3a3f1a50) at kernel/qcoreapplication.cpp:955
#60 0x00007f07dafd46dd in QCoreApplication::sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#61 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x28b3560, event=event@entry=0x7ffc3a3f1a50, alienWidget=alienWidget@entry=0x28b3560, nativeWidget=nativeWidget@entry=0x287e8b0, buttonDown=buttonDown@entry=0x7f07dbaf9368 <qt_button_down>, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3178
#62 0x00007f07db0523f2 in QETWidget::translateMouseEvent (this=this@entry=0x287e8b0, event=event@entry=0x7ffc3a3f1db0) at kernel/qapplication_x11.cpp:4638
#63 0x00007f07db051c83 in QApplication::x11ProcessEvent (this=0x7ffc3a3f2280, event=event@entry=0x7ffc3a3f1db0) at kernel/qapplication_x11.cpp:3626
#64 0x00007f07db07b542 in x11EventSourceDispatch (s=0xd2db50, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#65 0x00007f07d67d6197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#66 0x00007f07d67d63f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#67 0x00007f07d67d649c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#68 0x00007f07dbf3b2ae in QEventDispatcherGlib::processEvents (this=0xcc1fb0, flags=...) at kernel/qeventdispatcher_glib.cpp:450
#69 0x00007f07db07b616 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#70 0x00007f07dbf0918f in QEventLoop::processEvents (this=this@entry=0x7ffc3a3f2190, flags=...) at kernel/qeventloop.cpp:149
#71 0x00007f07dbf094f5 in QEventLoop::exec (this=this@entry=0x7ffc3a3f2190, flags=...) at kernel/qeventloop.cpp:204
#72 0x00007f07dbf0f4b9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1227
#73 0x00007f07dafcc22c in QApplication::exec () at kernel/qapplication.cpp:3828
#74 0x00000000004451cd in main (argc=<optimized out>, argv=<optimized out>) at /build/k3b-P3O1MD/k3b-2.0.3/src/main.cpp:165

Possible duplicates by query: bug 322881, bug 287800, bug 287077, bug 282076.

Reported using DrKonqi
Comment 1 Leslie Zhai 2017-06-28 02:03:56 UTC
Hi valdur,

k3b v2.0.3 was not be maintained any more, please try latest k3b application 17.04 https://launchpad.net/ubuntu/+source/k3b

Regards,
Leslie Zhai
Comment 2 Justin Zobel 2020-12-17 05:29:45 UTC
Thank you for the crash report.

As it has been a while since this was reported, can you please test and confirm if this issue is still occurring or if this bug report can be marked as resolved.

I have set the bug status to "needsinfo" pending your response, please change back to "reported" or "resolved/worksforme" when you respond, thank you.
Comment 3 Bug Janitor Service 2021-01-01 04:37:04 UTC
Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least
15 days. Please provide the requested information as soon as
possible and set the bug status as REPORTED. Due to regular bug
tracker maintenance, if the bug is still in NEEDSINFO status with
no change in 30 days the bug will be closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

If you have already provided the requested information, please
mark the bug as REPORTED so that the KDE team knows that the bug is
ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!
Comment 4 Bug Janitor Service 2021-01-16 04:36:01 UTC
This bug has been in NEEDSINFO status with no change for at least
30 days. The bug is now closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

Thank you for helping us make KDE software even better for everyone!
Comment 5 Thomas Hammar 2023-04-27 11:10:09 UTC
Created attachment 158481 [details]
New crash information added by DrKonqi

k3b (21.12.2) using Qt 5.15.3

- What I was doing when the application crashed:
I was trying to burn an audio CD from a wav file. K3b said that it had started the burning process, but nothing happened. After cancelling, the program crashed.

-- Backtrace (Reduced):
#5  0x00007f41f519a4f6 in K3b::Job::unregisterSubJob(K3b::Job*) () from /lib64/libk3blib.so.7
#6  0x00007f41f519f160 in K3b::Job::jobFinished(bool) () from /lib64/libk3blib.so.7
#7  0x00007f41f519f336 in K3b::Job::~Job() () from /lib64/libk3blib.so.7
#8  0x00007f41f51cb21d in K3b::CdrdaoWriter::~CdrdaoWriter() () from /lib64/libk3blib.so.7
#9  0x00007f41f339826a in QObjectPrivate::deleteChildren() () from /lib64/libQt5Core.so.5