Application: konqueror (4.14.13)
KDE Platform Version: 4.14.32
Qt Version: 4.8.7
Operating System: Linux 4.4.88 x86_64
Distribution (Platform): Slackware Packages

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

Closing tab with "ftp://ftp.gnu.org/gnu/ncurses/ncurses-6.0.tar.gz". Restarted and the same happens over and over again.

The crash can be reproduced every time.

-- Backtrace:
Application: Konqueror (konqueror), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f37b593e780 (LWP 2222))]

Thread 5 (Thread 0x7f374af13700 (LWP 2263)):
#0  0x00007f37b3f4136f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f37a76f3441 in  () at /usr/lib64/qt/lib/libQtWebKit.so.4
#2  0x00007f37a79f5216 in  () at /usr/lib64/qt/lib/libQtWebKit.so.4
#3  0x00007f37b3f3b684 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f37b2482efd in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f3750923700 (LWP 2245)):
#0  0x00007f37b247730d in poll () at /lib64/libc.so.6
#1  0x00007f37aeb9b964 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f37aeb9ba6c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f37b43100ce in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/qt/lib/libQtCore.so.4
#4  0x00007f37b42e05d1 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/qt/lib/libQtCore.so.4
#5  0x00007f37b42e08e5 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/qt/lib/libQtCore.so.4
#6  0x00007f37b41d9c39 in QThread::exec() () at /usr/lib64/qt/lib/libQtCore.so.4
#7  0x00007f37b41dc3bc in  () at /usr/lib64/qt/lib/libQtCore.so.4
#8  0x00007f37b3f3b684 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f37b2482efd in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f3751124700 (LWP 2244)):
#0  0x00007f37b247730d in poll () at /lib64/libc.so.6
#1  0x00007f37aeb9b964 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f37aeb9ba6c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f37b43100ce in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/qt/lib/libQtCore.so.4
#4  0x00007f37b42e05d1 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/qt/lib/libQtCore.so.4
#5  0x00007f37b42e08e5 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/qt/lib/libQtCore.so.4
#6  0x00007f37b41d9c39 in QThread::exec() () at /usr/lib64/qt/lib/libQtCore.so.4
#7  0x00007f37b42c1733 in  () at /usr/lib64/qt/lib/libQtCore.so.4
#8  0x00007f37b41dc3bc in  () at /usr/lib64/qt/lib/libQtCore.so.4
#9  0x00007f37b3f3b684 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f37b2482efd in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f3793685700 (LWP 2243)):
#0  0x00007f37b3f4136f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f37a79c3d9d in  () at /usr/lib64/qt/lib/libQtWebKit.so.4
#2  0x00007f37a79c3df9 in  () at /usr/lib64/qt/lib/libQtWebKit.so.4
#3  0x00007f37b3f3b684 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f37b2482efd in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f37b593e780 (LWP 2222)):
[KCrash Handler]
#6  0x00007f37b54413a0 in KXMLGUIFactory::removeClient(KXMLGUIClient*) () at /usr/lib64/libkdeui.so.5
#7  0x00007f37956ee9a4 in  () at /usr/lib64/kde4/arkpart.so
#8  0x00007f37956eea29 in  () at /usr/lib64/kde4/arkpart.so
#9  0x00007f379d117642 in  () at /usr/lib64/libkdeinit4_konqueror.so
#10 0x00007f379d117929 in  () at /usr/lib64/libkdeinit4_konqueror.so
#11 0x00007f379d123255 in  () at /usr/lib64/libkdeinit4_konqueror.so
#12 0x00007f379d123353 in  () at /usr/lib64/libkdeinit4_konqueror.so
#13 0x00007f379d1233b9 in  () at /usr/lib64/libkdeinit4_konqueror.so
#14 0x00007f379d1555b6 in  () at /usr/lib64/libkdeinit4_konqueror.so
#15 0x00007f379d1558f9 in  () at /usr/lib64/libkdeinit4_konqueror.so
#16 0x00007f37b42fa958 in QObject::event(QEvent*) () at /usr/lib64/qt/lib/libQtCore.so.4
#17 0x00007f37b348ac0c in QWidget::event(QEvent*) () at /usr/lib64/qt/lib/libQtGui.so.4
#18 0x00007f37b384b6f3 in QMainWindow::event(QEvent*) () at /usr/lib64/qt/lib/libQtGui.so.4
#19 0x00007f37b5437909 in KXmlGuiWindow::event(QEvent*) () at /usr/lib64/libkdeui.so.5
#20 0x00007f379d168d8c in  () at /usr/lib64/libkdeinit4_konqueror.so
#21 0x00007f37b343748c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/qt/lib/libQtGui.so.4
#22 0x00007f37b343df5c in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/qt/lib/libQtGui.so.4
#23 0x00007f37b53408aa in KApplication::notify(QObject*, QEvent*) () at /usr/lib64/libkdeui.so.5
#24 0x00007f37b42e1c0d in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib64/qt/lib/libQtCore.so.4
#25 0x00007f37b42e4e6e in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib64/qt/lib/libQtCore.so.4
#26 0x00007f37b430ff3e in  () at /usr/lib64/qt/lib/libQtCore.so.4
#27 0x00007f37aeb9b797 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#28 0x00007f37aeb9b9c8 in  () at /usr/lib64/libglib-2.0.so.0
#29 0x00007f37aeb9ba6c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#30 0x00007f37b43100ae in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/qt/lib/libQtCore.so.4
#31 0x00007f37b34da9e6 in  () at /usr/lib64/qt/lib/libQtGui.so.4
#32 0x00007f37b42e05d1 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/qt/lib/libQtCore.so.4
#33 0x00007f37b42e08e5 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/qt/lib/libQtCore.so.4
#34 0x00007f37b42e5ec9 in QCoreApplication::exec() () at /usr/lib64/qt/lib/libQtCore.so.4
#35 0x00007f379d188ad6 in kdemain () at /usr/lib64/libkdeinit4_konqueror.so
#36 0x0000000000408c21 in  ()
#37 0x00000000004099f7 in  ()
#38 0x000000000040a13a in  ()
#39 0x0000000000405952 in  ()
#40 0x00007f37b239c7d0 in __libc_start_main () at /lib64/libc.so.6
#41 0x00000000004067b9 in _start ()

Reported using DrKonqi