Application: konqueror (4.10.2)
KDE Platform Version: 4.10.2
Qt Version: 4.8.2
Operating System: Linux 3.8-1-amd64 x86_64
Distribution: Debian GNU/Linux unstable (sid)

-- Information about the crash:
- What I was doing when the application crashed:
If I go to Settings -> Configure Konqueror and then close the configuration window (by pressing OK or Cancel - does not matter), Konqueror with WebKit crashes.

The crash can be reproduced every time.

-- Backtrace:
Application: Konqueror (konqueror), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7feeaaf8b780 (LWP 25056))]

Thread 4 (Thread 0x7fee94dbb700 (LWP 25070)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fee98032ebd in WTF::TCMalloc_PageHeap::scavengerThread (this=0x7fee989f3280) at wtf/FastMalloc.cpp:2499
#2  0x00007fee98032fc9 in WTF::TCMalloc_PageHeap::runScavengerThread (context=<optimized out>) at wtf/FastMalloc.cpp:1622
#3  0x00007feea3f71e0e in start_thread (arg=0x7fee94dbb700) at pthread_create.c:311
#4  0x00007feeaa95695d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 3 (Thread 0x7fee944ba700 (LWP 25071)):
#0  0x00007feea3adc569 in g_mutex_get_impl (mutex=0x7fee8c0009a0) at /tmp/buildd/glib2.0-2.36.1/./glib/gthread-posix.c:121
#1  0x00007feea3adc7c9 in g_mutex_lock (mutex=<optimized out>) at /tmp/buildd/glib2.0-2.36.1/./glib/gthread-posix.c:210
#2  0x00007feea3a9d0f5 in g_main_context_iterate (context=context@entry=0x7fee8c0009a0, block=block@entry=1, dispatch=dispatch@entry=1, self=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at /tmp/buildd/glib2.0-2.36.1/./glib/gmain.c:3668
#3  0x00007feea3a9d324 in g_main_context_iteration (context=0x7fee8c0009a0, may_block=1) at /tmp/buildd/glib2.0-2.36.1/./glib/gmain.c:3762
#4  0x00007feea7544296 in QEventDispatcherGlib::processEvents (this=0x7fee8c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0x00007feea75148af in QEventLoop::processEvents (this=this@entry=0x7fee944b9e20, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007feea7514b38 in QEventLoop::exec (this=0x7fee944b9e20, flags=...) at kernel/qeventloop.cpp:204
#7  0x00007feea7417d70 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#8  0x00007feea741ad0b in QThreadPrivate::start (arg=0x5225c90) at thread/qthread_unix.cpp:307
#9  0x00007feea3f71e0e in start_thread (arg=0x7fee944ba700) at pthread_create.c:311
#10 0x00007feeaa95695d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 2 (Thread 0x7fee44204700 (LWP 25189)):
#0  0x00007feea3f74e1f in __pthread_mutex_unlock_usercnt (mutex=0x7fee3c000a60, decr=<optimized out>) at pthread_mutex_unlock.c:52
#1  0x00007feea3adc801 in g_mutex_unlock (mutex=mutex@entry=0x7fee3c0009a0) at /tmp/buildd/glib2.0-2.36.1/./glib/gthread-posix.c:229
#2  0x00007feea3a9d111 in g_main_context_iterate (context=context@entry=0x7fee3c0009a0, block=block@entry=1, dispatch=dispatch@entry=1, self=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at /tmp/buildd/glib2.0-2.36.1/./glib/gmain.c:3679
#3  0x00007feea3a9d324 in g_main_context_iteration (context=0x7fee3c0009a0, may_block=1) at /tmp/buildd/glib2.0-2.36.1/./glib/gmain.c:3762
#4  0x00007feea7544296 in QEventDispatcherGlib::processEvents (this=0x7fee3c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0x00007feea75148af in QEventLoop::processEvents (this=this@entry=0x7fee44203df0, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007feea7514b38 in QEventLoop::exec (this=0x7fee44203df0, flags=...) at kernel/qeventloop.cpp:204
#7  0x00007feea7417d70 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#8  0x00007feea74f51bf in QInotifyFileSystemWatcherEngine::run (this=0x5cfef60) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x00007feea741ad0b in QThreadPrivate::start (arg=0x5cfef60) at thread/qthread_unix.cpp:307
#10 0x00007feea3f71e0e in start_thread (arg=0x7fee44204700) at pthread_create.c:311
#11 0x00007feeaa95695d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 1 (Thread 0x7feeaaf8b780 (LWP 25056)):
[KCrash Handler]
#6  QWebView::page (this=0x0) at Api/qwebview.cpp:337
#7  0x00007fee98c61de1 in WebKitBrowserExtension::saveHistoryState() () from /usr/lib/libkwebkit.so.1
#8  0x00007fee98c56af1 in KWebKitPart::~KWebKitPart() () from /usr/lib/libkwebkit.so.1
#9  0x00007fee98c56b9a in KWebKitPart::~KWebKitPart() () from /usr/lib/libkwebkit.so.1
#10 0x00007feeaa1e8271 in KParts::Part::slotWidgetDestroyed (this=0x5e193e0) at ../../kparts/part.cpp:353
#11 0x00007feea752b54f in QMetaObject::activate (sender=sender@entry=0x5e22e50, m=m@entry=0x7feea7866b40, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffff7b2fc60) at kernel/qobject.cpp:3547
#12 0x00007feea752bf8f in QObject::destroyed (this=this@entry=0x5e22e50, _t1=_t1@entry=0x5e22e50) at .moc/release-shared/moc_qobject.cpp:149
#13 0x00007feea752c083 in QObject::~QObject (this=0x5e22e50, __in_chrg=<optimized out>) at kernel/qobject.cpp:844
#14 0x00007feea7f70270 in QWidget::~QWidget (this=0x5e22e50, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1552
#15 0x00007feea7f70529 in QWidget::~QWidget (this=0x5e22e50, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1701
#16 0x00007feea7528772 in QObjectPrivate::deleteChildren (this=0x5e13700) at kernel/qobject.cpp:1908
#17 0x00007feea7f701d4 in QWidget::~QWidget (this=0x5e13130, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1677
#18 0x00007feea8320e19 in QGroupBox::~QGroupBox (this=0x5e13130, __in_chrg=<optimized out>) at widgets/qgroupbox.cpp:216
#19 0x00007feea7528772 in QObjectPrivate::deleteChildren (this=0x5d83850) at kernel/qobject.cpp:1908
#20 0x00007feea7f701d4 in QWidget::~QWidget (this=0x5d83590, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1677
#21 0x00007fee911ef98e in ?? () from /usr/lib/kde4/kcm_konqhtml.so
#22 0x00007feea7528772 in QObjectPrivate::deleteChildren (this=0x5d810a0) at kernel/qobject.cpp:1908
#23 0x00007feea7f701d4 in QWidget::~QWidget (this=0x5d80d60, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1677
#24 0x00007feea8bb8569 in KDialog::~KDialog (this=0x5d80d60, __in_chrg=<optimized out>) at ../../kdeui/dialogs/kdialog.cpp:204
#25 0x00007feea7528772 in QObjectPrivate::deleteChildren (this=0x5d62410) at kernel/qobject.cpp:1908
#26 0x00007feea7f701d4 in QWidget::~QWidget (this=0x5d60f90, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1677
#27 0x00007fee911ef94e in ?? () from /usr/lib/kde4/kcm_konqhtml.so
#28 0x00007feea7528772 in QObjectPrivate::deleteChildren (this=0x5d5fcc0) at kernel/qobject.cpp:1908
#29 0x00007feea7f701d4 in QWidget::~QWidget (this=0x5d5fc90, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1677
#30 0x00007feea837a389 in QStackedWidget::~QStackedWidget (this=0x5d5fc90, __in_chrg=<optimized out>) at widgets/qstackedwidget.cpp:193
#31 0x00007feea7528772 in QObjectPrivate::deleteChildren (this=0x5d5f8d0) at kernel/qobject.cpp:1908
#32 0x00007feea7f701d4 in QWidget::~QWidget (this=0x51f9ec0, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1677
#33 0x00007feea8d32199 in KTabWidget::~KTabWidget (this=0x51f9ec0, __in_chrg=<optimized out>) at ../../kdeui/widgets/ktabwidget.cpp:257
#34 0x00007feea7528772 in QObjectPrivate::deleteChildren (this=0x5d5e0d0) at kernel/qobject.cpp:1908
#35 0x00007feea7f701d4 in QWidget::~QWidget (this=0x5d696b0, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1677
#36 0x00007feea8ce9b98 in KCModule::~KCModule (this=0x5d696b0, __in_chrg=<optimized out>) at ../../kdeui/widgets/kcmodule.cpp:193
#37 0x00007fee911db2b9 in ?? () from /usr/lib/kde4/kcm_konqhtml.so
#38 0x00007feea9fa1734 in KCModuleProxy::deleteClient (this=<optimized out>) at ../../kutils/kcmoduleproxy.cpp:219
#39 0x00007feea9f9f0ac in KCMultiDialogPrivate::_k_dialogClosed (this=0x5aa1840) at ../../kutils/kcmultidialog.cpp:201
#40 0x00007feea752b54f in QMetaObject::activate (sender=0x5a258c0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3547
#41 0x00007feea7f761a8 in QWidget::event (this=0x5a258c0, event=0x7ffff7b30d80) at kernel/qwidget.cpp:8582
#42 0x00007feea7f2670c in QApplicationPrivate::notify_helper (this=this@entry=0x2634bd0, receiver=receiver@entry=0x5a258c0, e=e@entry=0x7ffff7b30d80) at kernel/qapplication.cpp:4556
#43 0x00007feea7f2ab8a in QApplication::notify (this=0x7ffff7b31b70, receiver=0x5a258c0, e=0x7ffff7b30d80) at kernel/qapplication.cpp:4417
#44 0x00007feea8c5a516 in KApplication::notify (this=0x7ffff7b31b70, receiver=0x5a258c0, event=0x7ffff7b30d80) at ../../kdeui/kernel/kapplication.cpp:311
#45 0x00007feea7515b5e in QCoreApplication::notifyInternal (this=0x7ffff7b31b70, receiver=0x5a258c0, event=0x7ffff7b30d80) at kernel/qcoreapplication.cpp:915
#46 0x00007feea7f76aeb in sendEvent (event=0x7ffff7b30d80, receiver=0x5a258c0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#47 QWidgetPrivate::hide_helper (this=this@entry=0x5a9f730) at kernel/qwidget.cpp:7637
#48 0x00007feea7f78668 in QWidget::setVisible (this=0x5a258c0, visible=<optimized out>) at kernel/qwidget.cpp:7810
#49 0x00007feea83db633 in QDialog::setVisible (this=0x5a258c0, visible=<optimized out>) at dialogs/qdialog.cpp:793
#50 0x00007feea7f6fbbb in hide (this=0x5a258c0) at ../../include/QtGui/../../src/gui/kernel/qwidget.h:498
#51 QWidgetPrivate::close_helper (this=0x5a9f730, mode=QWidgetPrivate::CloseWithSpontaneousEvent) at kernel/qwidget.cpp:7945
#52 0x00007feea7fa2a7f in QApplication::x11ClientMessage (this=<optimized out>, w=0x5a258c0, event=<optimized out>, passive_only=<optimized out>) at kernel/qapplication_x11.cpp:3160
#53 0x00007feea7fa12a2 in QApplication::x11ProcessEvent (this=0x7ffff7b31b70, event=0x7ffff7b314a0) at kernel/qapplication_x11.cpp:3785
#54 0x00007feea7fc7bc2 in x11EventSourceDispatch (s=s@entry=0x2634610, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#55 0x00007feea3a9cf25 in g_main_dispatch (context=0x262f1b0) at /tmp/buildd/glib2.0-2.36.1/./glib/gmain.c:3054
#56 g_main_context_dispatch (context=context@entry=0x262f1b0) at /tmp/buildd/glib2.0-2.36.1/./glib/gmain.c:3630
#57 0x00007feea3a9d268 in g_main_context_iterate (context=context@entry=0x262f1b0, block=block@entry=1, dispatch=dispatch@entry=1, self=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at /tmp/buildd/glib2.0-2.36.1/./glib/gmain.c:3701
#58 0x00007feea3a9d324 in g_main_context_iteration (context=0x262f1b0, may_block=1) at /tmp/buildd/glib2.0-2.36.1/./glib/gmain.c:3762
#59 0x00007feea7544276 in QEventDispatcherGlib::processEvents (this=0x25f9b30, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#60 0x00007feea7fc783e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#61 0x00007feea75148af in QEventLoop::processEvents (this=this@entry=0x7ffff7b31870, flags=...) at kernel/qeventloop.cpp:149
#62 0x00007feea7514b38 in QEventLoop::exec (this=0x7ffff7b31870, flags=...) at kernel/qeventloop.cpp:204
#63 0x00007feea7519cf8 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1187
#64 0x00007feeaace6a32 in kdemain () from /usr/lib/kde4/libkdeinit/libkdeinit4_konqueror.so
#65 0x00007feeaa88fa55 in __libc_start_main (main=0x400740, argc=2, ubp_av=0x7ffff7b31df8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffff7b31de8) at libc-start.c:260
#66 0x0000000000400771 in _start ()

Reported using DrKonqi