Application: dolphin (1.6.1)
KDE Platform Version: 4.6.4 (4.6.4)
Qt Version: 4.7.2
Operating System: Linux 2.6.38-10-generic x86_64
Distribution: Ubuntu 11.04

-- Information about the crash:
Create two tags, delete both of them, you will get an empty entry which you can delete, if you do so, Dolphin crashes.

The crash can be reproduced every time.

-- Backtrace:
Application: Dolphin (dolphin), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f1296958780 (LWP 17780))]

Thread 3 (Thread 0x7f1282bef700 (LWP 17781)):
#0  0x00007f129624ef03 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f128e9ec104 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f128e9ec639 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f12926d3446 in QEventDispatcherGlib::processEvents (this=0x16259c0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f12926a7882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f12926a7abc in QEventLoop::exec (this=0x7f1282beedd0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f12925be924 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:492
#7  0x00007f1292689c2f in QInotifyFileSystemWatcherEngine::run (this=0x16fd0e0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f12925c1175 in QThreadPrivate::start (arg=0x16fd0e0) at thread/qthread_unix.cpp:320
#9  0x00007f128eeb7d8c in start_thread (arg=0x7f1282bef700) at pthread_create.c:304
#10 0x00007f129625c04d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f12805bd700 (LWP 17783)):
#0  0x00007f129624ef03 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f128e9ec104 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f128e9ec639 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f12926d3446 in QEventDispatcherGlib::processEvents (this=0x18a5700, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f12926a7882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f12926a7abc in QEventLoop::exec (this=0x7f12805bcdd0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f12925be924 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:492
#7  0x00007f1292689c2f in QInotifyFileSystemWatcherEngine::run (this=0x1922e40) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f12925c1175 in QThreadPrivate::start (arg=0x1922e40) at thread/qthread_unix.cpp:320
#9  0x00007f128eeb7d8c in start_thread (arg=0x7f12805bd700) at pthread_create.c:304
#10 0x00007f129625c04d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f1296958780 (LWP 17780)):
[KCrash Handler]
#6  0x00007f1294e2d747 in text (this=<value optimized out>) at /usr/include/qt4/QtGui/qlistwidget.h:90
#7  KEditTagsDialog::deleteTag (this=<value optimized out>) at ../../nepomuk/ui/kedittagsdialog.cpp:217
#8  0x00007f1294e2dfac in KEditTagsDialog::qt_metacall (this=0x7fff72103090, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff72101aa0) at ./kedittagsdialog_p.moc:83
#9  0x00007f12926bd5f8 in QMetaObject::activate (sender=0x1c89070, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x7fff72101aa0) at kernel/qobject.cpp:3287
#10 0x00007f12936dd252 in QAbstractButton::clicked (this=<value optimized out>, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:206
#11 0x00007f129342683e in QAbstractButtonPrivate::emitClicked (this=0x1d34de0) at widgets/qabstractbutton.cpp:546
#12 0x00007f1293427dbb in QAbstractButtonPrivate::click (this=0x1d34de0) at widgets/qabstractbutton.cpp:539
#13 0x00007f129342802c in QAbstractButton::mouseReleaseEvent (this=0x1c89070, e=0x7fff721023e0) at widgets/qabstractbutton.cpp:1121
#14 0x00007f12930b8cb8 in QWidget::event (this=0x1c89070, event=0x7fff721023e0) at kernel/qwidget.cpp:8259
#15 0x00007f12930679e4 in QApplicationPrivate::notify_helper (this=0x1547db0, receiver=0x1c89070, e=0x7fff721023e0) at kernel/qapplication.cpp:4462
#16 0x00007f129306cdb3 in QApplication::notify (this=<value optimized out>, receiver=0x1c89070, e=0x7fff721023e0) at kernel/qapplication.cpp:4023
#17 0x00007f1293d87716 in KApplication::notify (this=0x7fff72104ed0, receiver=0x1c89070, event=0x7fff721023e0) at ../../kdeui/kernel/kapplication.cpp:311
#18 0x00007f12926a849c in QCoreApplication::notifyInternal (this=0x7fff72104ed0, receiver=0x1c89070, event=0x7fff721023e0) at kernel/qcoreapplication.cpp:731
#19 0x00007f1293068a0d in sendEvent (receiver=0x1c89070, event=0x7fff721023e0, alienWidget=0x1c89070, nativeWidget=0x1d0ffa0, buttonDown=0x7f1293b48218, lastMouseReceiver=..., spontaneous=true) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#20 QApplicationPrivate::sendMouseEvent (receiver=0x1c89070, event=0x7fff721023e0, alienWidget=0x1c89070, nativeWidget=0x1d0ffa0, buttonDown=0x7f1293b48218, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3122
#21 0x00007f12930e8600 in QETWidget::translateMouseEvent (this=0x1d0ffa0, event=<value optimized out>) at kernel/qapplication_x11.cpp:4556
#22 0x00007f12930e704a in QApplication::x11ProcessEvent (this=0x7fff72104ed0, event=0x7fff72102d30) at kernel/qapplication_x11.cpp:3678
#23 0x00007f129310f162 in x11EventSourceDispatch (s=0x1550780, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#24 0x00007f128e9ebbcd in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007f128e9ec3a8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007f128e9ec639 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007f12926d33ef in QEventDispatcherGlib::processEvents (this=0x14f8db0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#28 0x00007f129310edfe in QGuiEventDispatcherGlib::processEvents (this=<value optimized out>, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#29 0x00007f12926a7882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#30 0x00007f12926a7abc in QEventLoop::exec (this=0x7fff72103030, flags=...) at kernel/qeventloop.cpp:201
#31 0x00007f12935268e6 in QDialog::exec (this=0x7fff72103090) at dialogs/qdialog.cpp:552
#32 0x00007f1294e2c306 in Nepomuk::TagWidget::slotShowAll (this=0x1bb64f0) at ../../nepomuk/ui/tagwidget.cpp:383
#33 0x00007f1294e2cd0c in Nepomuk::TagWidget::qt_metacall (this=0x1bb64f0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff72103270) at ./tagwidget.moc:104
#34 0x00007f12926bd5f8 in QMetaObject::activate (sender=0x1bb9890, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x7fff72103270) at kernel/qobject.cpp:3287
#35 0x00007f129346f0d2 in QLabel::linkActivated (this=<value optimized out>, _t1=<value optimized out>) at .moc/release-shared/moc_qlabel.cpp:180
#36 0x00007f129346f3ad in QLabel::qt_metacall (this=0x1bb9890, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0x7fff721033d0) at .moc/release-shared/moc_qlabel.cpp:110
#37 0x00007f12926bd5f8 in QMetaObject::activate (sender=0x1870af0, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x7fff721033d0) at kernel/qobject.cpp:3287
#38 0x00007f12932a8855 in QTextControl::linkActivated (this=<value optimized out>, _t1=<value optimized out>) at .moc/release-shared/moc_qtextcontrol_p.cpp:322
#39 0x00007f12932abb8c in QTextControlPrivate::activateLinkUnderCursor (this=0x1bc43b0, href=...) at text/qtextcontrol.cpp:2621
#40 0x00007f12932ac3a6 in QTextControlPrivate::mouseReleaseEvent (this=0x1bc43b0, button=<value optimized out>, pos=...) at text/qtextcontrol.cpp:1710
#41 0x00007f12932af5bc in QTextControl::processEvent (this=<value optimized out>, e=0x7fff72104210, matrix=..., contextWidget=<value optimized out>) at text/qtextcontrol.cpp:937
#42 0x00007f12932a5696 in QTextControl::processEvent (this=0x1870af0, e=0x7fff72104210, coordinateOffset=..., contextWidget=0x1bb9890) at text/qtextcontrol.cpp:884
#43 0x00007f129346dd0d in QLabelPrivate::sendControlEvent (this=0x1bc3f20, e=0x7fff72104210) at widgets/qlabel.cpp:1627
#44 0x00007f12930b8cb8 in QWidget::event (this=0x1bb9890, event=0x7fff72104210) at kernel/qwidget.cpp:8259
#45 0x00007f1293468a66 in QFrame::event (this=0x1bb9890, e=0x7fff72104210) at widgets/qframe.cpp:557
#46 0x00007f12930679e4 in QApplicationPrivate::notify_helper (this=0x1547db0, receiver=0x1bb9890, e=0x7fff72104210) at kernel/qapplication.cpp:4462
#47 0x00007f129306cdb3 in QApplication::notify (this=<value optimized out>, receiver=0x1bb9890, e=0x7fff72104210) at kernel/qapplication.cpp:4023
#48 0x00007f1293d87716 in KApplication::notify (this=0x7fff72104ed0, receiver=0x1bb9890, event=0x7fff72104210) at ../../kdeui/kernel/kapplication.cpp:311
#49 0x00007f12926a849c in QCoreApplication::notifyInternal (this=0x7fff72104ed0, receiver=0x1bb9890, event=0x7fff72104210) at kernel/qcoreapplication.cpp:731
#50 0x00007f1293068a0d in sendEvent (receiver=0x1bb9890, event=0x7fff72104210, alienWidget=0x0, nativeWidget=0x1bb9890, buttonDown=0x7f1293b48218, lastMouseReceiver=..., spontaneous=true) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#51 QApplicationPrivate::sendMouseEvent (receiver=0x1bb9890, event=0x7fff72104210, alienWidget=0x0, nativeWidget=0x1bb9890, buttonDown=0x7f1293b48218, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3122
#52 0x00007f12930e8600 in QETWidget::translateMouseEvent (this=0x1bb9890, event=<value optimized out>) at kernel/qapplication_x11.cpp:4556
#53 0x00007f12930e704a in QApplication::x11ProcessEvent (this=0x7fff72104ed0, event=0x7fff72104b60) at kernel/qapplication_x11.cpp:3678
#54 0x00007f129310f162 in x11EventSourceDispatch (s=0x1550780, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#55 0x00007f128e9ebbcd in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#56 0x00007f128e9ec3a8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#57 0x00007f128e9ec639 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#58 0x00007f12926d33ef in QEventDispatcherGlib::processEvents (this=0x14f8db0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#59 0x00007f129310edfe in QGuiEventDispatcherGlib::processEvents (this=<value optimized out>, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#60 0x00007f12926a7882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#61 0x00007f12926a7abc in QEventLoop::exec (this=0x7fff72104e60, flags=...) at kernel/qeventloop.cpp:201
#62 0x00007f12926abecb in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#63 0x00007f129654c9e5 in kdemain () from /usr/lib/kde4/libkdeinit/libkdeinit4_dolphin.so
#64 0x00007f1296194eff in __libc_start_main (main=0x400730 <_start+256>, argc=1, ubp_av=0x7fff721053f8, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=0x7fff721053e8) at libc-start.c:226
#65 0x0000000000400659 in _start ()

This bug may be a duplicate of or related to bug 248689.

Possible duplicates by query: bug 259768.

Reported using DrKonqi