[k3b] [Bug 372033] New: k3b crashing when sources for burning no longer available and then closing the application

[Gerd Grass]

https://bugs.kde.org/show_bug.cgi?id=372033

            Bug ID: 372033
           Summary: k3b crashing when sources for burning no longer
                    available and then closing the application
           Product: k3b
           Version: unspecified
          Platform: openSUSE RPMs
                OS: Linux
            Status: UNCONFIRMED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: k3b at kde.org
          Reporter: gerd.grass at gmx.de
                CC: michalm at jabster.pl, trueg at kde.org
  Target Milestone: ---

Application: k3b (2.0.80)
KDE Platform Version: 4.14.9
Qt Version: 4.8.6
Operating System: Linux 3.16.7-48-desktop x86_64
Distribution: "openSUSE 13.2 (Harlequin) (x86_64)"

-- Information about the crash:
- What I was doing when the application crashed:
Reading Audio CD from CD to PC (ripping it to MP3).
Moving those MP3 files to another location.
In k3b they were still visible.
I anted to what happens when burning those not existing files.
k3b started burning but no progress (always 0 %)
Finally I removed those non existing files from the k3b list.
When then closing k3b it crashed.

- Unusual behavior I noticed:
Usually user does not burn files which are not there any more.
In that case it might be worth k3b checking whether files still exist. 

This "bug" is not an urgent one. No need for an urgent fix.

- Custom settings of the application:

-- Backtrace:
Application: K3b (k3b), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f14b181e900 (LWP 2484))]

Thread 3 (Thread 0x7f1493dcf700 (LWP 2487)):
#0  0x00007f14aadd12bd in poll () at /lib64/libc.so.6
#1  0x00007f14b1465f20 in  () at /opt/lib/libmediaclient.so
#2  0x00007f14b1466c62 in poll () at /opt/lib/libmediaclient.so
#3  0x00007f14a4d44be4 in  () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f14a4d44cec in g_main_context_iteration () at
/usr/lib64/libglib-2.0.so.0
#5  0x00007f14ac50e0de in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib64/libQtCore.so.4
#6  0x00007f14ac4dfe6f in
QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib64/libQtCore.so.4
#7  0x00007f14ac4e0165 in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib64/libQtCore.so.4
#8  0x00007f14ac3dd0bf in QThread::exec() () at /usr/lib64/libQtCore.so.4
#9  0x00007f14ac4c1783 in  () at /usr/lib64/libQtCore.so.4
#10 0x00007f14ac3df79f in  () at /usr/lib64/libQtCore.so.4
#11 0x00007f14aa6d10a4 in start_thread () at /lib64/libpthread.so.0
#12 0x00007f14aadd96ed in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f14854b1700 (LWP 2994)):
#0  0x00007f14aa6d53e8 in pthread_cond_timedwait@@GLIBC_2.3.2 () at
/lib64/libpthread.so.0
#1  0x00007f14ac3de3ba in  () at /usr/lib64/libQtCore.so.4
#2  0x00007f14ac3deb46 in QThread::sleep(unsigned long) () at
/usr/lib64/libQtCore.so.4
#3  0x00007f14b0f14aa5 in K3b::MediaCache::PollThread::run() () at
/usr/lib64/libk3blib.so.6
#4  0x00007f14ac3df79f in  () at /usr/lib64/libQtCore.so.4
#5  0x00007f14aa6d10a4 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f14aadd96ed in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f14b181e900 (LWP 2484)):
[KCrash Handler]
#5  0x00007f14ac4f5116 in QMetaObject::activate(QObject*, QMetaObject const*,
int, void**) () at /usr/lib64/libQtCore.so.4
#6  0x00007f14b0f6a8de in K3b::AudioTrack::sourceAboutToBeRemoved(int) () at
/usr/lib64/libk3blib.so.6
#7  0x00007f14b0f6a90e in
K3b::AudioTrack::emitSourceAboutToBeRemoved(K3b::AudioDataSource*) () at
/usr/lib64/libk3blib.so.6
#8  0x00007f14b0f79a05 in K3b::AudioDataSource::take() () at
/usr/lib64/libk3blib.so.6
#9  0x00007f14b0f79a67 in K3b::AudioDataSource::~AudioDataSource() () at
/usr/lib64/libk3blib.so.6
#10 0x00007f14b0f7e139 in K3b::AudioCdTrackSource::~AudioCdTrackSource() () at
/usr/lib64/libk3blib.so.6
#11 0x00007f14b0f6b3bc in K3b::AudioTrack::~AudioTrack() () at
/usr/lib64/libk3blib.so.6
#12 0x00007f14b0f6b4f9 in K3b::AudioTrack::~AudioTrack() () at
/usr/lib64/libk3blib.so.6
#13 0x000000000047aace in _start ()

Reported using DrKonqi

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