Application that crashed: kate
Version of the application: 3.3.0
KDE Version: 4.3.00 (KDE 4.3.0)
Qt Version: 4.5.2
Operating System: Linux 2.6.30.5-43.fc11.x86_64 x86_64
Distribution: "Fedora release 11 (Leonidas)"

What I was doing when the application crashed:
Steps to reproduce:
1. Have a home directory with lots of subdirectories and files in it.
2. Ensure that the home directory has not been listed recently by any program (i.e. the directory listing is not cached).
3. Run Kate.
4. Select File->Open...
5. Quickly check that you are in your home directory.
6. Start typing the name of a subdirectory of your home directory in the Name box, e.g. ~/q
7. Check that no auto-completion if offered for the subdirectory you have started typing (i.e. the file dialog has not finished listing your home directory yet).
8. Delete the q.
9. Type the q again. Rinse, wash, repeat.
10. Kate will often (>50% time) segfault.

The problem seems to be when trying to auto-complete a directory name when the directory listing is still being loaded. At the point the directory listing is finished loading the application may crash.


 -- Backtrace:
Application: Kate (kate), signal: Segmentation fault
87	  int result = INLINE_SYSCALL (poll, 3, CHECK_N (fds, nfds), nfds, timeout);
[Current thread is 1 (Thread 0x7f3149994820 (LWP 5185))]

Thread 2 (Thread 0x7f313e5fa910 (LWP 5189)):
[KCrash Handler]
#5  QMutex::lock (this=0x80) at thread/qmutex.cpp:152
#6  0x00000037c0459e88 in QMutexLocker::relock (this=<value optimized out>) at ../../src/corelib/thread/qmutex.h:120
#7  QMutexLocker (this=<value optimized out>) at ../../src/corelib/thread/qmutex.h:102
#8  QThreadPrivate::finish (this=<value optimized out>) at thread/qthread_unix.cpp:198
#9  0x00000037c0459d4d in ~__pthread_cleanup_class (this=<value optimized out>, __in_chrg=<value optimized out>) at /usr/include/pthread.h:535
#10 QThreadPrivate::start (this=<value optimized out>, __in_chrg=<value optimized out>) at thread/qthread_unix.cpp:190
#11 0x00000032a560686a in start_thread (arg=<value optimized out>) at pthread_create.c:297
#12 0x00000032a4ade39d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f3149994820 (LWP 5185)):
#0  0x00000032a4ad50b3 in *__GI___poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00000032a620882a in _xcb_conn_wait (c=0x20198f0, cond=<value optimized out>, vector=0x7fff1ad6a618, count=0x7fff1ad6a614) at xcb_conn.c:306
#2  0x00000032a6208d67 in _xcb_out_send (c=0x20198f0, vector=0x7fff1ad6a618, count=0x7fff1ad6a614) at xcb_out.c:338
#3  0x00000032a6209015 in xcb_writev (c=0x20198f0, vector=0x7fff1ad6a670, count=3, requests=4) at xcb_out.c:286
#4  0x00000032a5e4c8aa in _XSend (dpy=0x202f2f0, data=0x0, size=<value optimized out>) at xcb_io.c:332
#5  0x00000032a5e4c9e9 in _XReply (dpy=0x7fff1ad6a590, rep=0x7fff1ad6a740, extra=0, discard=1) at xcb_io.c:450
#6  0x00000032a5e4232d in XTranslateCoordinates (dpy=0x202f2f0, src_win=<value optimized out>, dest_win=567, src_x=272, src_y=532, dst_x=0x7fff1ad6a7cc, dst_y=0x7fff1ad6a7c8, child=0x7fff1ad6a7b8)
    at TrCoords.c:53
#7  0x00000037c1a12c8b in QWidget::mapToGlobal (this=0x7fff1ad6d9d0, pos=<value optimized out>) at kernel/qwidget_x11.cpp:1189
#8  0x00000037c1a12be2 in QWidget::mapToGlobal (this=0x2741ae0, pos=@0x7fff1ad6a880) at kernel/qwidget_x11.cpp:1182
#9  0x00000037c1a12be2 in QWidget::mapToGlobal (this=0x285ab90, pos=@0x7fff1ad6a8e0) at kernel/qwidget_x11.cpp:1182
#10 0x00000037c1a12be2 in QWidget::mapToGlobal (this=0x2888320, pos=@0x7fff1ad6a920) at kernel/qwidget_x11.cpp:1182
#11 0x00000037c2abb3f2 in KCompletionBox::globalPositionHint (this=<value optimized out>) at /usr/src/debug/kdelibs-4.3.0/kdeui/widgets/kcompletionbox.cpp:319
#12 0x00000037c2abb527 in KCompletionBox::sizeAndPosition (this=0x29d5390) at /usr/src/debug/kdelibs-4.3.0/kdeui/widgets/kcompletionbox.cpp:295
#13 0x00000037c2abb923 in KCompletionBox::setVisible (this=0x7fff1ad6a590, visible=true) at /usr/src/debug/kdelibs-4.3.0/kdeui/widgets/kcompletionbox.cpp:327
#14 0x00000037c2ad7af3 in KLineEdit::setCompletedItems (this=0x2888320, items=@0x7fff1ad6aae0, autoSuggest=true) at /usr/src/debug/kdelibs-4.3.0/kdeui/widgets/klineedit.cpp:1529
#15 0x00000037c2ad807b in KLineEdit::makeCompletion (this=0x2888320, text=<value optimized out>) at /usr/src/debug/kdelibs-4.3.0/kdeui/widgets/klineedit.cpp:460
#16 0x00000037c2ad4d3c in KLineEdit::doCompletion (this=0x2888320, txt=@0x7fff1ad6ac60) at /usr/src/debug/kdelibs-4.3.0/kdeui/widgets/klineedit.cpp:1757
#17 0x00000037c2ad8cd9 in KLineEdit::keyPressEvent (this=0x2888320, e=0x7fff1ad6b830) at /usr/src/debug/kdelibs-4.3.0/kdeui/widgets/klineedit.cpp:927
#18 0x00000037c19ddc3a in QWidget::event (this=0x2888320, event=0x7fff1ad6b830) at kernel/qwidget.cpp:7584
#19 0x00000037c1d46be1 in QLineEdit::event (this=0x2888320, e=0x7fff1ad6b830) at widgets/qlineedit.cpp:1681
#20 0x00000037c2ad9ee5 in KLineEdit::event (this=0x2888320, ev=0x7fff1ad6b830) at /usr/src/debug/kdelibs-4.3.0/kdeui/widgets/klineedit.cpp:1323
#21 0x00000037c1d0a0fd in QComboBox::keyPressEvent (this=0x285ab90, e=0x7fff1ad6b830) at widgets/qcombobox.cpp:2879
#22 0x00000037c19ddc3a in QWidget::event (this=0x285ab90, event=0x7fff1ad6b830) at kernel/qwidget.cpp:7584
#23 0x00000037c198f69c in QApplicationPrivate::notify_helper (this=0x200dc70, receiver=0x285ab90, e=0x7fff1ad6b830) at kernel/qapplication.cpp:4056
#24 0x00000037c1997413 in QApplication::notify (this=<value optimized out>, receiver=0x285ab90, e=0x7fff1ad6b830) at kernel/qapplication.cpp:3662
#25 0x00000037c2a11296 in KApplication::notify (this=0x7fff1ad70830, receiver=0x285ab90, event=0x7fff1ad6b830) at /usr/src/debug/kdelibs-4.3.0/kdeui/kernel/kapplication.cpp:302
#26 0x00000037c053f59c in QCoreApplication::notifyInternal (this=0x7fff1ad70830, receiver=0x285ab90, event=0x7fff1ad6b830) at kernel/qcoreapplication.cpp:610
#27 0x00000037c1a1e8ba in QKeyMapper::sendKeyEvent (keyWidget=0x285ab90, grab=<value optimized out>, type=QEvent::KeyPress, code=84, modifiers=<value optimized out>, text=@0x7fff1ad6ba50, 
    autorepeat=false, count=1, nativeScanCode=28, nativeVirtualKey=116, nativeModifiers=0) at kernel/qkeymapper_x11.cpp:1861
#28 0x00000037c1a20e50 in QKeyMapperPrivate::translateKeyEvent (this=0x204ad00, keyWidget=0x285ab90, event=<value optimized out>, grab=true) at kernel/qkeymapper_x11.cpp:1831
#29 0x00000037c19fa4e4 in QApplication::x11ProcessEvent (this=<value optimized out>, event=0x7fff1ad6d610) at kernel/qapplication_x11.cpp:3438
#30 0x00000037c1a227dc in x11EventSourceDispatch (s=<value optimized out>, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:146
#31 0x00000032a6e37abe in g_main_dispatch (context=<value optimized out>) at gmain.c:1824
#32 IA__g_main_context_dispatch (context=<value optimized out>) at gmain.c:2377
#33 0x00000032a6e3b278 in g_main_context_iterate (context=0x2010920, block=<value optimized out>, dispatch=<value optimized out>, self=<value optimized out>) at gmain.c:2455
#34 0x00000032a6e3b3a0 in IA__g_main_context_iteration (context=0x2010920, may_block=1) at gmain.c:2518
#35 0x00000037c056798e in QEventDispatcherGlib::processEvents (this=0x1ff11b0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:329
#36 0x00000037c1a21f8e in QGuiEventDispatcherGlib::processEvents (this=0x7fff1ad6a590, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#37 0x00000037c053ded2 in QEventLoop::processEvents (this=<value optimized out>, flags={i = 100}) at kernel/qeventloop.cpp:149
#38 0x00000037c053e2a4 in QEventLoop::exec (this=0x7fff1ad6d940, flags={i = 64}) at kernel/qeventloop.cpp:201
#39 0x00000037c1e0543e in QDialog::exec (this=0x7fff1ad6d9d0) at dialogs/qdialog.cpp:498
#40 0x00000037c31ee0b9 in KEncodingFileDialog::getOpenUrlsAndEncoding (encoding=@0x222cf70, startDir=@0x7fff1ad6db20, filter=<value optimized out>, parent=<value optimized out>, 
    caption=<value optimized out>) at /usr/src/debug/kdelibs-4.3.0/kio/kfile/kencodingfiledialog.cpp:162
#41 0x00000037c3a5202e in ?? () from /usr/lib64/libkateinterfaces.so.4
#42 0x00000037c3a52564 in ?? () from /usr/lib64/libkateinterfaces.so.4
#43 0x00000037c05547dc in QMetaObject::activate (sender=0x23345c0, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0xffffffffffffffff) at kernel/qobject.cpp:3113
#44 0x00000037c1989857 in QAction::triggered (this=0x7fff1ad6a590, _t1=false) at .moc/release-shared/moc_qaction.cpp:236
#45 0x00000037c198acbf in QAction::activate (this=0x23345c0, event=<value optimized out>) at kernel/qaction.cpp:1160
#46 0x00000037c198d747 in QAction::event (this=0x7fff1ad6a590, e=<value optimized out>) at kernel/qaction.cpp:1079
#47 0x00000037c293f93d in KAction::event (this=0x7fff1ad6a590, event=0x7fff1ad6e190) at /usr/src/debug/kdelibs-4.3.0/kdeui/actions/kaction.cpp:88
#48 0x00000037c198f69c in QApplicationPrivate::notify_helper (this=0x200dc70, receiver=0x23345c0, e=0x7fff1ad6e190) at kernel/qapplication.cpp:4056
#49 0x00000037c19968fe in QApplication::notify (this=0x7fff1ad70830, receiver=0x23345c0, e=0x7fff1ad6e190) at kernel/qapplication.cpp:4021
#50 0x00000037c2a11296 in KApplication::notify (this=0x7fff1ad70830, receiver=0x23345c0, event=0x7fff1ad6e190) at /usr/src/debug/kdelibs-4.3.0/kdeui/kernel/kapplication.cpp:302
#51 0x00000037c053f59c in QCoreApplication::notifyInternal (this=0x7fff1ad70830, receiver=0x23345c0, event=0x7fff1ad6e190) at kernel/qcoreapplication.cpp:610
#52 0x00000037c19c3cb6 in QCoreApplication::sendEvent (event=<value optimized out>, receiver=<value optimized out>) at ../../src/corelib/kernel/qcoreapplication.h:213
#53 QShortcutMap::dispatchEvent (event=<value optimized out>, receiver=<value optimized out>) at kernel/qshortcutmap.cpp:884
#54 0x00000037c19c5b27 in QShortcutMap::tryShortcutEvent (this=0x200dd88, o=<value optimized out>, e=0x7fff1ad6e620) at kernel/qshortcutmap.cpp:369
#55 0x00000037c1997596 in QApplication::notify (this=0x7fff1ad70830, receiver=0x2574070, e=0x7fff1ad6e620) at kernel/qapplication.cpp:3645
#56 0x00000037c2a11296 in KApplication::notify (this=0x7fff1ad70830, receiver=0x2574070, event=0x7fff1ad6e620) at /usr/src/debug/kdelibs-4.3.0/kdeui/kernel/kapplication.cpp:302
#57 0x00000037c053f59c in QCoreApplication::notifyInternal (this=0x7fff1ad70830, receiver=0x2574070, event=0x7fff1ad6e620) at kernel/qcoreapplication.cpp:610
#58 0x00000037c1a1e8ba in QKeyMapper::sendKeyEvent (keyWidget=0x2574070, grab=<value optimized out>, type=QEvent::KeyPress, code=79, modifiers=<value optimized out>, text=@0x7fff1ad6e840, 
    autorepeat=false, count=1, nativeScanCode=32, nativeVirtualKey=111, nativeModifiers=4) at kernel/qkeymapper_x11.cpp:1861
#59 0x00000037c1a20e50 in QKeyMapperPrivate::translateKeyEvent (this=0x204ad00, keyWidget=0x2574070, event=<value optimized out>, grab=true) at kernel/qkeymapper_x11.cpp:1831
#60 0x00000037c19fa4e4 in QApplication::x11ProcessEvent (this=<value optimized out>, event=0x7fff1ad70400) at kernel/qapplication_x11.cpp:3438
#61 0x00000037c1a227dc in x11EventSourceDispatch (s=<value optimized out>, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:146
#62 0x00000032a6e37abe in g_main_dispatch (context=<value optimized out>) at gmain.c:1824
#63 IA__g_main_context_dispatch (context=<value optimized out>) at gmain.c:2377
#64 0x00000032a6e3b278 in g_main_context_iterate (context=0x2010920, block=<value optimized out>, dispatch=<value optimized out>, self=<value optimized out>) at gmain.c:2455
#65 0x00000032a6e3b3a0 in IA__g_main_context_iteration (context=0x2010920, may_block=1) at gmain.c:2518
#66 0x00000037c0567936 in QEventDispatcherGlib::processEvents (this=0x1ff11b0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#67 0x00000037c1a21f8e in QGuiEventDispatcherGlib::processEvents (this=0x7fff1ad6a590, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#68 0x00000037c053ded2 in QEventLoop::processEvents (this=<value optimized out>, flags={i = 36}) at kernel/qeventloop.cpp:149
#69 0x00000037c053e2a4 in QEventLoop::exec (this=0x7fff1ad70730, flags={i = 0}) at kernel/qeventloop.cpp:201
#70 0x00000037c0540439 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#71 0x00000037c3e04ae5 in kdemain () from /usr/lib64/libkdeinit4_kate.so
#72 0x00000032a4a1ea2d in __libc_start_main (main=<value optimized out>, argc=<value optimized out>, ubp_av=<value optimized out>, init=<value optimized out>, fini=<value optimized out>, 
    rtld_fini=<value optimized out>, stack_end=0x7fff1ad71a48) at libc-start.c:220
#73 0x00000000004006c9 in _start ()

Reported using DrKonqi