Bug 304517

Application: k3b (2.0.2)
KDE Platform Version: 4.8.4 (4.8.4)
Qt Version: 4.8.1
Operating System: Linux 3.2.0-27-generic x86_64
Distribution: Ubuntu 12.04 LTS

-- Information about the crash:
k3b crash when add a second file to a new audio project (no crash with the first file, but always with the second one)

The crash can be reproduced every 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 0x7ff2ab4797c0 (LWP 2585))]

Thread 4 (Thread 0x7ff290c61700 (LWP 2586)):
#0  0x00007ff2a0c2a05d in pthread_mutex_unlock () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007ff2a0ebf5d1 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff2a0e837e2 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff2a0e83f5b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ff2a0e84164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ff2a6566426 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#6  0x00007ff2a6535c82 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#7  0x00007ff2a6535ed7 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#8  0x00007ff2a6434fa7 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#9  0x00007ff2a65159ff in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#10 0x00007ff2a6437fcb in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#11 0x00007ff2a0c26e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#12 0x00007ff2a4ea64bd in clone () from /lib/x86_64-linux-gnu/libc.so.6
#13 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7ff286b2c700 (LWP 2607)):
#0  0x00007ff2a0c2b0fe in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007ff2a6436c98 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#2  0x00007ff2a64373f6 in QThread::sleep(unsigned long) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#3  0x00007ff2aad4c05a in K3b::MediaCache::PollThread::run (this=0x1bbf590) at /build/buildd/k3b-2.0.2/libk3b/tools/k3bmediacache.cpp:106
#4  0x00007ff2a6437fcb in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#5  0x00007ff2a0c26e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#6  0x00007ff2a4ea64bd in clone () from /lib/x86_64-linux-gnu/libc.so.6
#7  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7ff28482c700 (LWP 2635)):
#0  0x00007ff2a4e9ab03 in poll () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007ff2a0e84036 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff2a0e84164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff2a6566426 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#4  0x00007ff2a6535c82 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#5  0x00007ff2a6535ed7 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#6  0x00007ff2a6434fa7 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#7  0x00007ff2a65159ff in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#8  0x00007ff2a6437fcb in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#9  0x00007ff2a0c26e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#10 0x00007ff2a4ea64bd in clone () from /lib/x86_64-linux-gnu/libc.so.6
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7ff2ab4797c0 (LWP 2585)):
[KCrash Handler]
#6  0x00000000b6cc1313 in ?? ()
#7  0x00007ff28ae8bf24 in av_free_packet (pkt=0x28816e0) at /build/buildd/libav-0.8.3/libavcodec/avpacket.c:154
#8  0x00007ff28bbebcfe in K3bFFMpegFile::close (this=0x2773f80) at /build/buildd/k3b-2.0.2/plugins/decoder/ffmpeg/k3bffmpegwrapper.cpp:166
#9  0x00007ff28bbebd63 in K3bFFMpegFile::open (this=0x2773f80) at /build/buildd/k3b-2.0.2/plugins/decoder/ffmpeg/k3bffmpegwrapper.cpp:92
#10 0x00007ff28bbec989 in K3bFFMpegWrapper::open (this=<optimized out>, filename=...) at /build/buildd/k3b-2.0.2/plugins/decoder/ffmpeg/k3bffmpegwrapper.cpp:440
#11 0x00007ff28bbeb3f2 in K3bFFMpegDecoderFactory::canDecode (this=<optimized out>, url=...) at /build/buildd/k3b-2.0.2/plugins/decoder/ffmpeg/k3bffmpegdecoder.cpp:60
#12 0x00007ff2aad5d0b0 in K3b::AudioDecoderFactory::createDecoder (url=...) at /build/buildd/k3b-2.0.2/libk3b/plugin/k3baudiodecoder.cpp:584
#13 0x00007ff2aada9880 in K3b::AudioDoc::getDecoderForUrl (this=0x253f4e0, url=..., reused=0x7fffd62c5f8f) at /build/buildd/k3b-2.0.2/libk3b/projects/audiocd/k3baudiodoc.cpp:454
#14 0x00000000004c50a7 in K3b::AudioTrackAddingDialog::slotAddUrls (this=0x282c240) at /build/buildd/k3b-2.0.2/src/projects/k3baudiotrackaddingdialog.cpp:173
#15 0x00007ff2a6550446 in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#16 0x00007ff2a568cb7b in QWidget::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#17 0x00007ff2a563c894 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#18 0x00007ff2a5641713 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#19 0x00007ff2a6f9d9e6 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#20 0x00007ff2a6536e9c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#21 0x00007ff2a653ac6a in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#22 0x00007ff2a6565f93 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#23 0x00007ff2a0e83d53 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007ff2a0e840a0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007ff2a0e84164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007ff2a65663bf in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#27 0x00007ff2a56e4d5e in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#28 0x00007ff2a6535c82 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#29 0x00007ff2a6535ed7 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#30 0x00007ff2a5b0c936 in QDialog::exec() () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#31 0x00007ff2a5b0d0ca in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#32 0x00007ff2a6550446 in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#33 0x00007ff2a568cb7b in QWidget::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#34 0x00007ff2a563c894 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#35 0x00007ff2a5641713 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#36 0x00007ff2a6f9d9e6 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#37 0x00007ff2a6536e9c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#38 0x00007ff2a653ac6a in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#39 0x00007ff2a6565f93 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#40 0x00007ff2a0e83d53 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#41 0x00007ff2a0e840a0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#42 0x00007ff2a0e84164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#43 0x00007ff2a65663bf in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#44 0x00007ff2a56e4d5e in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#45 0x00007ff2a6535c82 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#46 0x00007ff2a6535ed7 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#47 0x00007ff2a653af67 in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#48 0x00000000004434d6 in main (argc=4, argv=0x7fffd62c8398) at /build/buildd/k3b-2.0.2/src/main.cpp:165

This bug may be a duplicate of or related to bug 283287.

Possible duplicates by query: bug 304083, bug 300998, bug 300976, bug 299068, bug 298996.

Reported using DrKonqi