Application: dolphin (15.08.3)

Qt Version: 5.5.1
Operating System: Linux 4.2.0-25-generic x86_64
Distribution: Ubuntu 15.10

-- Information about the crash:
After I upgraded plasma to 5.5.3, dolphin starts to crash at least 8 out of 10 times when I click on configure dolphin.

The crash can be reproduced every time.

-- 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 0x7f298ac7f800 (LWP 17249))]

Thread 2 (Thread 0x7f297bad4700 (LWP 17251)):
#0  0x00007f299bb588dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f299267e1ec in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f2974003020, timeout=<optimized out>, context=0x7f2974000990) at /build/glib2.0-ajuDY6/glib2.0-2.46.1/./glib/gmain.c:4135
#2  0x00007f299267e1ec in g_main_context_iterate (context=context@entry=0x7f2974000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-ajuDY6/glib2.0-2.46.1/./glib/gmain.c:3835
#3  0x00007f299267e2fc in g_main_context_iteration (context=0x7f2974000990, may_block=1) at /build/glib2.0-ajuDY6/glib2.0-2.46.1/./glib/gmain.c:3901
#4  0x00007f299695c50b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f299690350a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f299671fac4 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f2996724a6e in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f2992db46aa in start_thread (arg=0x7f297bad4700) at pthread_create.c:333
#9  0x00007f299bb63eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f298ac7f800 (LWP 17249)):
[KCrash Handler]
#6  0x00007f29967ade13 in QtSharedPointer::ExternalRefCountData::getAndRef(QObject const*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f29974682d5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#8  0x00007f299746a52b in  () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#9  0x00007f299740a9dc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#10 0x00007f299740fea6 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007f2996905d7b in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f2996e585f1 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#13 0x00007f2996e5a2b5 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#14 0x00007f2996e3e228 in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#15 0x00007f298a7640b0 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#16 0x00007f299267dff7 in g_main_context_dispatch (context=0x7f29800016f0) at /build/glib2.0-ajuDY6/glib2.0-2.46.1/./glib/gmain.c:3154
#17 0x00007f299267dff7 in g_main_context_dispatch (context=context@entry=0x7f29800016f0) at /build/glib2.0-ajuDY6/glib2.0-2.46.1/./glib/gmain.c:3769
#18 0x00007f299267e250 in g_main_context_iterate (context=context@entry=0x7f29800016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-ajuDY6/glib2.0-2.46.1/./glib/gmain.c:3840
#19 0x00007f299267e2fc in g_main_context_iteration (context=0x7f29800016f0, may_block=1) at /build/glib2.0-ajuDY6/glib2.0-2.46.1/./glib/gmain.c:3901
#20 0x00007f299695c4ef in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007f299690350a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007f299758abb0 in QMenu::exec(QPoint const&, QAction*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#23 0x00007f29975ccffe in  () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#24 0x00007f29969348ea in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f2997507bc7 in  () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#26 0x00007f2997507d21 in QAbstractButton::mousePressEvent(QMouseEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#27 0x00007f29975cddef in QToolButton::mousePressEvent(QMouseEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#28 0x00007f299744de3f in QWidget::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#29 0x00007f29975ce099 in QToolButton::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#30 0x00007f299740a9dc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#31 0x00007f29974105a9 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#32 0x00007f2996905d7b in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#33 0x00007f299740f4b2 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#34 0x00007f2997467f6b in  () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#35 0x00007f299746a52b in  () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#36 0x00007f299740a9dc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#37 0x00007f299740fea6 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#38 0x00007f2996905d7b in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#39 0x00007f2996e585f1 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#40 0x00007f2996e5a2b5 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#41 0x00007f2996e3e228 in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#42 0x00007f298a7640b0 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#43 0x00007f299267dff7 in g_main_context_dispatch (context=0x7f29800016f0) at /build/glib2.0-ajuDY6/glib2.0-2.46.1/./glib/gmain.c:3154
#44 0x00007f299267dff7 in g_main_context_dispatch (context=context@entry=0x7f29800016f0) at /build/glib2.0-ajuDY6/glib2.0-2.46.1/./glib/gmain.c:3769
#45 0x00007f299267e250 in g_main_context_iterate (context=context@entry=0x7f29800016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-ajuDY6/glib2.0-2.46.1/./glib/gmain.c:3840
#46 0x00007f299267e2fc in g_main_context_iteration (context=0x7f29800016f0, may_block=1) at /build/glib2.0-ajuDY6/glib2.0-2.46.1/./glib/gmain.c:3901
#47 0x00007f299695c4ef in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#48 0x00007f299690350a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#49 0x00007f299690b5ec in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#50 0x00007f299be85114 in kdemain () at /usr/lib/x86_64-linux-gnu/libkdeinit5_dolphin.so
#51 0x00007f299ba7da40 in __libc_start_main (main=0x400730 <main>, argc=1, argv=0x7ffe5f933338, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe5f933328) at libc-start.c:289
#52 0x0000000000400769 in _start ()

Reported using DrKonqi