Application: k3b (2.0.2)
KDE Platform Version: 4.9.5
Qt Version: 4.8.3
Operating System: Linux 3.5.0-37-generic x86_64
Distribution: Ubuntu 12.10

-- Information about the crash:
Freshly mounted DVD, reading normally in SMplayer as DVD disc source, but not on reading .vob file from folder: would play and respond to controls normally but not decrypted content. Selecting "Rip DVD Titles with k3b"  from KDE tray widget (http://imgur.com/fyLJiBq) crashed it the first time, selecting ""Rip Video DVD" from Tools menu crashed it, same error the second time, was able to start rip the third time but unsuccessful, error was;

Using libdvdcss version 1.2.12 for DVD access
libdvdread: Attempting to retrieve all CSS keys
libdvdread: This can take a _long_ time, please be patient
libdvdread: Get key for /VIDEO_TS/VTS_01_0.VOB at 0x00066c75
libdvdread: Elapsed time 0

for all files

-- 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 0x7ff4f04ee7c0 (LWP 4606))]

Thread 3 (Thread 0x7ff4e8b88700 (LWP 4607)):
#0  0x00007ff4fd37d313 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007ff4f9124d84 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff4f9124ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff4fea24c16 in QEventDispatcherGlib::processEvents (this=0x7ff4e40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007ff4fe9f52bf in QEventLoop::processEvents (this=this@entry=0x7ff4e8b87d90, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007ff4fe9f5548 in QEventLoop::exec (this=0x7ff4e8b87d90, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007ff4fe8f6b10 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007ff4fe9d59af in QInotifyFileSystemWatcherEngine::run (this=0xc7cc60) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007ff4fe8f9aec in QThreadPrivate::start (arg=0xc7cc60) at thread/qthread_unix.cpp:338
#9  0x00007ff4f8ec7e9a in start_thread (arg=0x7ff4e8b88700) at pthread_create.c:308
#10 0x00007ff4fd388ccd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7ff4e1292700 (LWP 4634)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:215
#1  0x00007ff4fe8f86f6 in thread_sleep (ti=ti@entry=0x7ff4e1291d80) at thread/qthread_unix.cpp:475
#2  0x00007ff4fe8f8e96 in QThread::sleep (secs=<optimized out>) at thread/qthread_unix.cpp:489
#3  0x00007ff502f0e825 in K3b::MediaCache::PollThread::run (this=0xced440) at /build/buildd/k3b-2.0.2/libk3b/tools/k3bmediacache.cpp:106
#4  0x00007ff4fe8f9aec in QThreadPrivate::start (arg=0xced440) at thread/qthread_unix.cpp:338
#5  0x00007ff4f8ec7e9a in start_thread (arg=0x7ff4e1292700) at pthread_create.c:308
#6  0x00007ff4fd388ccd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7ff4f04ee7c0 (LWP 4606)):
[KCrash Handler]
#6  QString (other=<error reading variable: Cannot access memory at address 0x0>, this=0x7fff3abd47e0) at /usr/include/qt4/QtCore/qstring.h:725
#7  KTempDir::name (this=0x0) at ../../kdecore/io/ktempdir.cpp:170
#8  0x000000000054469e in K3b::VideoDVDRippingPreview::slotTranscodeFinished (this=0xf7bb80) at /build/buildd/k3b-2.0.2/src/rip/videodvd/k3bvideodvdrippingpreview.cpp:125
#9  0x00007ff4fea0bf5f in QMetaObject::activate (sender=0x19efa40, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff3abd49b0) at kernel/qobject.cpp:3547
#10 0x00007ff502f12a9f in K3bQProcess::finished (this=this@entry=0x19efa40, _t1=0, _t2=QProcess::CrashExit) at /build/buildd/k3b-2.0.2/obj-x86_64-linux-gnu/libk3b/moc_k3bqprocess.cpp:162
#11 0x00007ff502f15f82 in K3bQProcessPrivate::_q_notifyProcessDied (this=0x1ad7280) at /build/buildd/k3b-2.0.2/libk3b/tools/qprocess/k3bqprocess.cpp:762
#12 0x00007ff502f18f85 in K3bQProcessPrivate::waitForFinished (this=0x1ad7280, msecs=30000) at /build/buildd/k3b-2.0.2/libk3b/tools/qprocess/k3bqprocess_unix.cpp:1199
#13 0x00007ff502f12bfb in K3bQProcess::waitForFinished (this=this@entry=0x19efa40, msecs=msecs@entry=30000) at /build/buildd/k3b-2.0.2/libk3b/tools/qprocess/k3bqprocess.cpp:1428
#14 0x00007ff502f12f53 in K3bQProcess::~K3bQProcess (this=0x19efa40, __in_chrg=<optimized out>) at /build/buildd/k3b-2.0.2/libk3b/tools/qprocess/k3bqprocess.cpp:895
#15 0x00007ff502f113a9 in K3b::Process::~Process (this=0x19efa40, __in_chrg=<optimized out>) at /build/buildd/k3b-2.0.2/libk3b/tools/k3bprocess.cpp:119
#16 0x00007ff4fea0b468 in QObject::event (this=0x19efa40, e=<optimized out>) at kernel/qobject.cpp:1176
#17 0x00007ff4fdb22e9c in QApplicationPrivate::notify_helper (this=this@entry=0xaf0490, receiver=receiver@entry=0x19efa40, e=e@entry=0x178cd40) at kernel/qapplication.cpp:4562
#18 0x00007ff4fdb2730a in QApplication::notify (this=0x7fff3abd57e0, receiver=0x19efa40, e=0x178cd40) at kernel/qapplication.cpp:4423
#19 0x00007ff4ff4341f6 in KApplication::notify (this=0x7fff3abd57e0, receiver=0x19efa40, event=0x178cd40) at ../../kdeui/kernel/kapplication.cpp:311
#20 0x00007ff4fe9f656e in QCoreApplication::notifyInternal (this=0x7fff3abd57e0, receiver=receiver@entry=0x19efa40, event=event@entry=0x178cd40) at kernel/qcoreapplication.cpp:915
#21 0x00007ff4fe9fa3f1 in sendEvent (event=0x178cd40, receiver=0x19efa40) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#22 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0xa5f220) at kernel/qcoreapplication.cpp:1539
#23 0x00007ff4fea24a63 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#24 postEventSourceDispatch (s=0xaeb330) at kernel/qeventdispatcher_glib.cpp:279
#25 0x00007ff4f9124ab5 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007ff4f9124de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007ff4f9124ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x00007ff4fea24bf6 in QEventDispatcherGlib::processEvents (this=0xaeaae0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#29 0x00007ff4fdbc7c1e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#30 0x00007ff4fe9f52bf in QEventLoop::processEvents (this=this@entry=0x7fff3abd5610, flags=...) at kernel/qeventloop.cpp:149
#31 0x00007ff4fe9f5548 in QEventLoop::exec (this=0x7fff3abd5610, flags=...) at kernel/qeventloop.cpp:204
#32 0x00007ff4fe9fa708 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1187
#33 0x0000000000444962 in main (argc=<optimized out>, argv=0x7fff3abd5928) at /build/buildd/k3b-2.0.2/src/main.cpp:165

Possible duplicates by query: bug 317317, bug 313639.

Reported using DrKonqi