Bug 317317

Application: k3b (2.0.2)
KDE Platform Version: 4.10.1
Qt Version: 4.8.3
Operating System: Linux 3.5.0-26-generic x86_64
Distribution: Ubuntu 12.10

-- Information about the crash:
I choosed rip dvd from notification window when inserted dvd then k3b openned and then crashed.

-- 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 0x7f14f6cf97c0 (LWP 11808))]

Thread 3 (Thread 0x7f14ef8ae700 (LWP 11809)):
#0  0x00007f1503b7a303 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f14ff923d84 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f14ff923ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1505221c46 in QEventDispatcherGlib::processEvents (this=0x7f14e80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007f15051f22ef in QEventLoop::processEvents (this=this@entry=0x7f14ef8add90, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f15051f2578 in QEventLoop::exec (this=0x7f14ef8add90, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f15050f3b40 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007f15051d29df in QInotifyFileSystemWatcherEngine::run (this=0x15e30f0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f15050f6b1c in QThreadPrivate::start (arg=0x15e30f0) at thread/qthread_unix.cpp:338
#9  0x00007f14ff6c6e9a in start_thread (arg=0x7f14ef8ae700) at pthread_create.c:308
#10 0x00007f1503b85cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f14e56b8700 (LWP 11836)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:215
#1  0x00007f15050f5726 in thread_sleep (ti=ti@entry=0x7f14e56b7d80) at thread/qthread_unix.cpp:475
#2  0x00007f15050f5ec6 in QThread::sleep (secs=<optimized out>) at thread/qthread_unix.cpp:489
#3  0x00007f150970d825 in K3b::MediaCache::PollThread::run (this=0x1586c70) at /build/buildd/k3b-2.0.2/libk3b/tools/k3bmediacache.cpp:106
#4  0x00007f15050f6b1c in QThreadPrivate::start (arg=0x1586c70) at thread/qthread_unix.cpp:338
#5  0x00007f14ff6c6e9a in start_thread (arg=0x7f14e56b8700) at pthread_create.c:308
#6  0x00007f1503b85cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f14f6cf97c0 (LWP 11808)):
[KCrash Handler]
#6  QString (other=<error reading variable: Cannot access memory at address 0x0>, this=0x7fff90c9d1d0) 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=0x1aa0dd0) at /build/buildd/k3b-2.0.2/src/rip/videodvd/k3bvideodvdrippingpreview.cpp:125
#9  0x00007f1505208f8f in QMetaObject::activate (sender=0x1de9ef0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff90c9d3a0) at kernel/qobject.cpp:3547
#10 0x00007f1509711a9f in K3bQProcess::finished (this=this@entry=0x1de9ef0, _t1=0, _t2=QProcess::CrashExit) at /build/buildd/k3b-2.0.2/obj-x86_64-linux-gnu/libk3b/moc_k3bqprocess.cpp:162
#11 0x00007f1509714f82 in K3bQProcessPrivate::_q_notifyProcessDied (this=0x1f64450) at /build/buildd/k3b-2.0.2/libk3b/tools/qprocess/k3bqprocess.cpp:762
#12 0x00007f1509717f85 in K3bQProcessPrivate::waitForFinished (this=0x1f64450, msecs=30000) at /build/buildd/k3b-2.0.2/libk3b/tools/qprocess/k3bqprocess_unix.cpp:1199
#13 0x00007f1509711bfb in K3bQProcess::waitForFinished (this=this@entry=0x1de9ef0, msecs=msecs@entry=30000) at /build/buildd/k3b-2.0.2/libk3b/tools/qprocess/k3bqprocess.cpp:1428
#14 0x00007f1509711f53 in K3bQProcess::~K3bQProcess (this=0x1de9ef0, __in_chrg=<optimized out>) at /build/buildd/k3b-2.0.2/libk3b/tools/qprocess/k3bqprocess.cpp:895
#15 0x00007f15097103a9 in K3b::Process::~Process (this=0x1de9ef0, __in_chrg=<optimized out>) at /build/buildd/k3b-2.0.2/libk3b/tools/k3bprocess.cpp:119
#16 0x00007f1505208498 in QObject::event (this=0x1de9ef0, e=<optimized out>) at kernel/qobject.cpp:1176
#17 0x00007f150431fe9c in QApplicationPrivate::notify_helper (this=this@entry=0x14a4160, receiver=receiver@entry=0x1de9ef0, e=e@entry=0x1a5a140) at kernel/qapplication.cpp:4562
#18 0x00007f150432430a in QApplication::notify (this=0x7fff90c9e1d0, receiver=0x1de9ef0, e=0x1a5a140) at kernel/qapplication.cpp:4423
#19 0x00007f1505c32ad6 in KApplication::notify (this=0x7fff90c9e1d0, receiver=0x1de9ef0, event=0x1a5a140) at ../../kdeui/kernel/kapplication.cpp:311
#20 0x00007f15051f359e in QCoreApplication::notifyInternal (this=0x7fff90c9e1d0, receiver=receiver@entry=0x1de9ef0, event=event@entry=0x1a5a140) at kernel/qcoreapplication.cpp:915
#21 0x00007f15051f7421 in sendEvent (event=0x1a5a140, receiver=0x1de9ef0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#22 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x1406220) at kernel/qcoreapplication.cpp:1539
#23 0x00007f1505221a93 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#24 postEventSourceDispatch (s=0x143ff60) at kernel/qeventdispatcher_glib.cpp:279
#25 0x00007f14ff923ab5 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007f14ff923de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007f14ff923ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x00007f1505221c26 in QEventDispatcherGlib::processEvents (this=0x1407b00, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#29 0x00007f15043c4c1e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#30 0x00007f15051f22ef in QEventLoop::processEvents (this=this@entry=0x7fff90c9e000, flags=...) at kernel/qeventloop.cpp:149
#31 0x00007f15051f2578 in QEventLoop::exec (this=0x7fff90c9e000, flags=...) at kernel/qeventloop.cpp:204
#32 0x00007f15051f7738 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1187
#33 0x0000000000444962 in main (argc=<optimized out>, argv=0x7fff90c9e318) at /build/buildd/k3b-2.0.2/src/main.cpp:165

Possible duplicates by query: bug 313639, bug 302218.

Reported using DrKonqi