https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=13022

            Bug ID: 13022
           Summary: Segfault when saving preferences in Ubuntu
           Product: Wireshark
           Version: 2.3.x (Experimental)
          Hardware: x86
                OS: Ubuntu
            Status: UNCONFIRMED
          Severity: Major
          Priority: Low
         Component: Common utilities (libwsutil)
          Assignee: bugzilla-ad...@wireshark.org
          Reporter: sean.stal...@intel.com

Build Information:
Wireshark 2.3.0 (v2.3.0rc0-1098-g4a46982 from unknown)

Copyright 1998-2016 Gerald Combs <ger...@wireshark.org> and contributors.
License GPLv2+: GNU GPL version 2 or later
<http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Compiled (64-bit) with Qt 5.5.1, with libpcap, with POSIX capabilities (Linux),
with libnl 3, with GLib 2.48.1, with zlib 1.2.8, with SMI 0.4.8, with c-ares
1.10.0, with Lua 5.2.4, with GnuTLS 3.4.10, with Gcrypt 1.6.5, with MIT
Kerberos, with GeoIP, without nghttp2, without LZ4, without Snappy, with
QtMultimedia, without AirPcap.

Running on Linux 4.8.0-rc8+, with        Intel(R) Core(TM) i7-2600K CPU @
3.40GHz (with SSE4.2), with 7894 MB of physical memory, with locale
en_US.UTF-8,
with libpcap version 1.7.4, with GnuTLS 3.4.10, with Gcrypt 1.6.5, with zlib
1.2.8.

Built using gcc 5.4.0 20160609.

--
Writing preferences triggers a segfault.
Reproduced on my system by starting wireshark, clicking Edit->Preferences, and
hitting OK.


Stackdump below:

#0  0x00007ffff40bec82 in write_prefs
(pf_path_return=pf_path_return@entry=0x7fffffffbf90) at prefs.c:5495
#1  0x000000000076b07d in prefs_main_write () at preference_utils.c:352
#2  0x00000000004f079c in PreferencesDialog::on_buttonBox_accepted
(this=0x7fffffffcf50) at preferences_dialog.cpp:943
#3  0x00000000005dd313 in PreferencesDialog::qt_static_metacall
(_a=0x7fffffffc0e0, _id=11, _c=QMetaObject::InvokeMetaMethod, 
    _o=0x7fffffffcf50) at preferences_dialog.moc.cpp:168
#4  PreferencesDialog::qt_metacall (this=0x7fffffffcf50,
_c=QMetaObject::InvokeMetaMethod, _id=11, _a=0x7fffffffc0e0)
    at preferences_dialog.moc.cpp:169
#5  0x00007ffff0bdf180 in QMetaObject::activate(QObject*, int, int, void**) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ffff15cc9f0 in ?? () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#7  0x00007ffff0bdefca in QMetaObject::activate(QObject*, int, int, void**) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007ffff183d1b2 in QAbstractButton::clicked(bool) () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#9  0x00007ffff159ff04 in ?? () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#10 0x00007ffff15a1519 in ?? () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007ffff15a1694 in QAbstractButton::mouseReleaseEvent(QMouseEvent*) ()
from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#12 0x00007ffff14e5f88 in QWidget::event(QEvent*) () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#13 0x00007ffff14a305c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#14 0x00007ffff14a8c19 in QApplication::notify(QObject*, QEvent*) () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007ffff0bb062b in QCoreApplication::notifyInternal(QObject*, QEvent*)
() from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007ffff14a7b32 in QApplicationPrivate::sendMouseEvent(QWidget*,
QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007ffff150057b in ?? () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007ffff1502b3b in ?? () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007ffff14a305c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#20 0x00007ffff14a8516 in QApplication::notify(QObject*, QEvent*) () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00007ffff0bb062b in QCoreApplication::notifyInternal(QObject*, QEvent*)
() from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007ffff0ef2521 in
QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*)
()
   from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#23 0x00007ffff0ef41e5 in
QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*)
()
   from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#24 0x00007ffff0ed7f38 in
QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>)
()
   from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#25 0x00007fffe4052070 in ?? () from
/usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#26 0x00007ffff1a1f1a7 in g_main_context_dispatch () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007ffff1a1f400 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x00007ffff1a1f4ac in g_main_context_iteration () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#29 0x00007ffff0c06a7f in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007ffff0baddea in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007ffff169dc7d in QDialog::exec() () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#32 0x00000000004d5dbb in MainWindow::showPreferencesDialog (this=<optimized
out>, 
    start_pane=start_pane@entry=PreferencesDialog::ppAppearance) at
main_window_slots.cpp:2128
#33 0x00000000004d5e17 in MainWindow::on_actionEditPreferences_triggered
(this=<optimized out>) at main_window_slots.cpp:2149
#34 0x00000000005da2b1 in MainWindow::qt_static_metacall (_o=_o@entry=0xeb2a90,
_c=_c@entry=QMetaObject::InvokeMetaMethod, 
    _id=_id@entry=139, _a=_a@entry=0x7fffffffd1d0) at main_window.moc.cpp:1529
#35 0x00000000005daa87 in MainWindow::qt_metacall (this=0xeb2a90,
_c=QMetaObject::InvokeMetaMethod, _id=139, _a=0x7fffffffd1d0)
    at main_window.moc.cpp:1804
#36 0x00007ffff0bdf180 in QMetaObject::activate(QObject*, int, int, void**) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#37 0x00007ffff1499412 in QAction::triggered(bool) () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#38 0x00007ffff149b898 in QAction::activate(QAction::ActionEvent) () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#39 0x00007ffff149be1f in ?? () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#40 0x00007ffff0bdfea1 in QObject::event(QEvent*) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#41 0x00007ffff149c122 in QAction::event(QEvent*) () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#42 0x00007ffff14a305c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#43 0x00007ffff14a8516 in QApplication::notify(QObject*, QEvent*) () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#44 0x00007ffff0bb062b in QCoreApplication::notifyInternal(QObject*, QEvent*)
() from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#45 0x00007ffff0bb2a26 in QCoreApplicationPrivate::sendPostedEvents(QObject*,
int, QThreadData*) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#46 0x00007ffff0c06673 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#47 0x00007ffff1a1f1a7 in g_main_context_dispatch () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#48 0x00007ffff1a1f400 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0

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