Application: dolphin (4.12.3)
KDE Platform Version: 4.12.3
Qt Version: 4.8.2
Operating System: Linux 3.2.0-60-generic x86_64
Distribution: Ubuntu 12.04.4 LTS

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

I had opened dolphin, I needed to read a DVD content so I inserted the DVD into the DVD reader device. after mount the volume I got the error although dolphin still running.

-- Backtrace:
Application: Dolphin (dolphin), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f0ca540b780 (LWP 2527))]

Thread 4 (Thread 0x7f0c889d6700 (LWP 2532)):
#0  0x00007f0ca4cbaa43 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f0c9c860ff6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0c9c861124 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0ca0ae7926 in QEventDispatcherGlib::processEvents (this=0x7f0c7c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007f0ca0ab6e62 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f0ca0ab70b7 in QEventLoop::exec (this=0x7f0c889d5dd0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f0ca09b6077 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007f0ca0a96b6f in QInotifyFileSystemWatcherEngine::run (this=0xb33b80) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f0ca09b909b in QThreadPrivate::start (arg=0xb33b80) at thread/qthread_unix.cpp:307
#9  0x00007f0c9cd2de9a in start_thread (arg=0x7f0c889d6700) at pthread_create.c:308
#10 0x00007f0ca4cc63fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f0c83fff700 (LWP 2533)):
#0  0x00007f0ca4cd4037 in pthread_mutex_unlock (mutex=0x7f0c78000a60) at forward.c:184
#1  0x00007f0c9c89c5e1 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0c9c860afd in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0c9c860f96 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f0c9c861124 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f0ca0ae7926 in QEventDispatcherGlib::processEvents (this=0x7f0c780008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0x00007f0ca0ab6e62 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f0ca0ab70b7 in QEventLoop::exec (this=0x7f0c83ffee00, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007f0ca09b6077 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#9  0x00007f0ca09b909b in QThreadPrivate::start (arg=0x9e3290) at thread/qthread_unix.cpp:307
#10 0x00007f0c9cd2de9a in start_thread (arg=0x7f0c83fff700) at pthread_create.c:308
#11 0x00007f0ca4cc63fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f0c83174700 (LWP 2534)):
#0  0x00007f0ca4cbaa43 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f0c9c860ff6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0c9c861124 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0ca0ae7926 in QEventDispatcherGlib::processEvents (this=0x7f0c700008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007f0ca0ab6e62 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f0ca0ab70b7 in QEventLoop::exec (this=0x7f0c83173dd0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f0ca09b6077 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007f0ca0a96b6f in QInotifyFileSystemWatcherEngine::run (this=0xe4e380) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f0ca09b909b in QThreadPrivate::start (arg=0xe4e380) at thread/qthread_unix.cpp:307
#9  0x00007f0c9cd2de9a in start_thread (arg=0x7f0c83174700) at pthread_create.c:308
#10 0x00007f0ca4cc63fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f0ca540b780 (LWP 2527)):
[KCrash Handler]
#6  0x00007f0ca263610b in QDomNode::isElement (this=<optimized out>) at dom/qdom.cpp:2823
#7  0x00007f0ca263a1b8 in QDomNode::firstChildElement (this=<optimized out>, tagName=...) at dom/qdom.cpp:2951
#8  0x00007f0ca2a23dcc in KBookmarkGroup::findToolbar (this=0x7fff032d1cf0) at ../../kio/bookmarks/kbookmark.cc:251
#9  0x00007f0ca2a2ae1a in KBookmarkManager::saveAs (this=0xae4160, filename=..., toolbarCache=<optimized out>) at ../../kio/bookmarks/kbookmarkmanager.cc:415
#10 0x00007f0ca2a2affe in KBookmarkManager::emitChanged (this=0xae4160, group=...) at ../../kio/bookmarks/kbookmarkmanager.cc:553
#11 0x00007f0ca4ff0460 in PlacesItemModel::saveBookmarks (this=0xf80f30) at ../../../dolphin/src/panels/places/placesitemmodel.cpp:732
#12 0x00007f0ca0acc781 in QMetaObject::activate (sender=0x1010840, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3547
#13 0x00007f0ca0ad1679 in QObject::event (this=0x1010840, e=<optimized out>) at kernel/qobject.cpp:1157
#14 0x00007f0ca14b77b4 in notify_helper (e=0x7fff032d26d0, receiver=0x1010840, this=0x861960) at kernel/qapplication.cpp:4556
#15 QApplicationPrivate::notify_helper (this=0x861960, receiver=0x1010840, e=0x7fff032d26d0) at kernel/qapplication.cpp:4528
#16 0x00007f0ca14bc583 in QApplication::notify (this=0x7fff032d29a0, receiver=0x1010840, e=0x7fff032d26d0) at kernel/qapplication.cpp:4417
#17 0x00007f0ca21f01d6 in KApplication::notify (this=0x7fff032d29a0, receiver=0x1010840, event=0x7fff032d26d0) at ../../kdeui/kernel/kapplication.cpp:311
#18 0x00007f0ca0ab832c in QCoreApplication::notifyInternal (this=0x7fff032d29a0, receiver=0x1010840, event=0x7fff032d26d0) at kernel/qcoreapplication.cpp:915
#19 0x00007f0ca0ae96f2 in sendEvent (event=0x7fff032d26d0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#20 QTimerInfoList::activateTimers (this=0x867d80) at kernel/qeventdispatcher_unix.cpp:611
#21 0x00007f0ca0ae710d in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:186
#22 timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:180
#23 0x00007f0c9c860d13 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f0c9c861060 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007f0c9c861124 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007f0ca0ae78bf in QEventDispatcherGlib::processEvents (this=0x832b40, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#27 0x00007f0ca155fcde in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#28 0x00007f0ca0ab6e62 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#29 0x00007f0ca0ab70b7 in QEventLoop::exec (this=0x7fff032d2930, flags=...) at kernel/qeventloop.cpp:204
#30 0x00007f0ca0abc407 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1187
#31 0x00007f0ca4fe3aa1 in kdemain (argc=5, argv=0x7fff032d2f38) at ../../../dolphin/src/main.cpp:93
#32 0x00007f0ca4bf376d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=5, ubp_av=0x7fff032d2f38, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff032d2f28) at libc-start.c:226
#33 0x0000000000400671 in _start ()

Possible duplicates by query: bug 320006.

Reported using DrKonqi