Application: k3b (2.0.2)
KDE Platform Version: 4.11.3
Qt Version: 4.8.4
Operating System: Linux 3.11.0-14-generic x86_64
Distribution: Ubuntu 13.10

-- Information about the crash:
- What I was doing when the application crashed:

Opened K3b and dropped any file to the bottom panel without selecting of project type.

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 0x7f9e248887c0 (LWP 30829))]

Thread 5 (Thread 0x7f9e08a58700 (LWP 30830)):
#0  0x00007f9e1848805f in __pthread_mutex_unlock_usercnt (mutex=0x7f9e04000a60, decr=<optimized out>) at pthread_mutex_unlock.c:52
#1  0x00007f9e1916d3d1 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f9e1912c830 in g_main_context_acquire () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f9e1912d565 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f9e1912d7ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f9e1f3e6a76 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#6  0x00007f9e1f3b85ef in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#7  0x00007f9e1f3b88e5 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#8  0x00007f9e1f2b788f in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#9  0x00007f9e1f399d13 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#10 0x00007f9e1f2b9f2f in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#11 0x00007f9e18484f6e in start_thread (arg=0x7f9e08a58700) at pthread_create.c:311
#12 0x00007f9e1dd409cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 4 (Thread 0x7f9dfdb70700 (LWP 30853)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1  0x00007f9e1f2b8b7a in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#2  0x00007f9e1f2b92d6 in QThread::sleep(unsigned long) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#3  0x00007f9e2417e7f5 in K3b::MediaCache::PollThread::run (this=0xac4bd0) at /build/buildd/k3b-2.0.2/libk3b/tools/k3bmediacache.cpp:106
#4  0x00007f9e1f2b9f2f in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#5  0x00007f9e18484f6e in start_thread (arg=0x7f9dfdb70700) at pthread_create.c:311
#6  0x00007f9e1dd409cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 3 (Thread 0x7f9dfd36f700 (LWP 30854)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1  0x00007f9e1f2b8b7a in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#2  0x00007f9e1f2b92d6 in QThread::sleep(unsigned long) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#3  0x00007f9e2417e7f5 in K3b::MediaCache::PollThread::run (this=0x8639a0) at /build/buildd/k3b-2.0.2/libk3b/tools/k3bmediacache.cpp:106
#4  0x00007f9e1f2b9f2f in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#5  0x00007f9e18484f6e in start_thread (arg=0x7f9dfd36f700) at pthread_create.c:311
#6  0x00007f9e1dd409cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 2 (Thread 0x7f9deea53700 (LWP 30880)):
#0  0x00007f9e1912cceb in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f9e1912d5c3 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f9e1912d7ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f9e1f3e6a76 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#4  0x00007f9e1f3b85ef in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#5  0x00007f9e1f3b88e5 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#6  0x00007f9e1f2b788f in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#7  0x00007f9e1f399d13 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#8  0x00007f9e1f2b9f2f in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#9  0x00007f9e18484f6e in start_thread (arg=0x7f9deea53700) at pthread_create.c:311
#10 0x00007f9e1dd409cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 1 (Thread 0x7f9e248887c0 (LWP 30829)):
[KCrash Handler]
#5  0x00007f9e02cf4242 in av_free_packet () from /usr/lib/x86_64-linux-gnu/libavcodec.so.53
#6  0x00007f9e039e6d5e in K3bFFMpegFile::close (this=this@entry=0x9cea80) at /build/buildd/k3b-2.0.2/plugins/decoder/ffmpeg/k3bffmpegwrapper.cpp:166
#7  0x00007f9e039e6dc0 in K3bFFMpegFile::open (this=this@entry=0x9cea80) at /build/buildd/k3b-2.0.2/plugins/decoder/ffmpeg/k3bffmpegwrapper.cpp:92
#8  0x00007f9e039e7859 in K3bFFMpegWrapper::open (this=<optimized out>, filename=...) at /build/buildd/k3b-2.0.2/plugins/decoder/ffmpeg/k3bffmpegwrapper.cpp:440
#9  0x00007f9e039e6452 in K3bFFMpegDecoderFactory::canDecode (this=<optimized out>, url=...) at /build/buildd/k3b-2.0.2/plugins/decoder/ffmpeg/k3bffmpegdecoder.cpp:60
#10 0x0000000000504917 in areAudioFiles (urls=...) at /build/buildd/k3b-2.0.2/src/k3b.cpp:152
#11 K3b::MainWindow::addUrls (this=0xabbb50, urls=...) at /build/buildd/k3b-2.0.2/src/k3b.cpp:1545
#12 0x00000000005057de in qt_static_metacall (_a=<optimized out>, _id=<optimized out>, _o=<optimized out>, _c=<optimized out>) at /build/buildd/k3b-2.0.2/obj-x86_64-linux-gnu/src/k3b.moc:173
#13 K3b::MainWindow::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at /build/buildd/k3b-2.0.2/obj-x86_64-linux-gnu/src/k3b.moc:130
#14 0x00007f9e1f3d1dce in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#15 0x00007f9e1e52b36b in QWidget::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#16 0x00007f9e1e8e4db3 in QMainWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#17 0x00007f9e1feeea49 in KXmlGuiWindow::event(QEvent*) () from /usr/lib/libkdeui.so.5
#18 0x00007f9e1e4dbdfc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#19 0x00007f9e1e4e2470 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#20 0x00007f9e1fe02a6a in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#21 0x00007f9e1f3b98bd in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#22 0x00007f9e1f3bce1f in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#23 0x00007f9e1f3e7073 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#24 0x00007f9e1912d3b6 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007f9e1912d708 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007f9e1912d7ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007f9e1f3e6a55 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#28 0x00007f9e1e57d9d6 in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#29 0x00007f9e1f3b85ef in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#30 0x00007f9e1f3b88e5 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#31 0x00007f9e1f3bde5b in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#32 0x00000000004449a2 in main (argc=<optimized out>, argv=0x7fffd211dc08) at /build/buildd/k3b-2.0.2/src/main.cpp:165

Possible duplicates by query: bug 328893, bug 328473, bug 327040, bug 325594, bug 325493.

Reported using DrKonqi