[kde] [Bug 346630] New: systemsettings5: sigsegv while leaving display settings

[Robert Moucha]

https://bugs.kde.org/show_bug.cgi?id=346630

            Bug ID: 346630
           Summary: systemsettings5: sigsegv while leaving display
                    settings
           Product: kde
           Version: unspecified
          Platform: unspecified
                OS: Linux
            Status: UNCONFIRMED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: unassigned-bugs at kde.org
          Reporter: robert.moucha at gmail.com

Application: systemsettings5 (5.2.2)

Qt Version: 5.4.1
Operating System: Linux 3.19.0-15-generic x86_64
Distribution: Ubuntu 15.04

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

When I click "Overview" button while in "Display Confiuration", SIGSEGV always
happens.
Possible duplicate of https://bugs.kde.org/show_bug.cgi?id=345841

The crash can be reproduced every time.

-- Backtrace:
Application: System Settings (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f3164fbb780 (LWP 6038))]

Thread 2 (Thread 0x7f315287d700 (LWP 6039)):
#0  0x00007f31617288dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f315fa42b72 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f315fa4464f in xcb_wait_for_event () from
/usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f315563a099 in QXcbEventReader::run (this=0xa1d8b0) at
qxcbconnection.cpp:1105
#4  0x00007f3161da9b0e in QThreadPrivate::start (arg=0xa1d8b0) at
thread/qthread_unix.cpp:337
#5  0x00007f315e95c6aa in start_thread (arg=0x7f315287d700) at
pthread_create.c:333
#6  0x00007f3161733eed in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f3164fbb780 (LWP 6038)):
[KCrash Handler]
#6  0x00007f3160831d7e in QQuickItemPrivate::addToDirtyList() () from
/usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f3160831e28 in
QQuickItemPrivate::dirty(QQuickItemPrivate::DirtyType) () from
/usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007f316083c045 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007f316201973a in QObject::event (this=0x186be40, e=<optimized out>) at
kernel/qobject.cpp:1245
#10 0x00007f316083ab6b in QQuickItem::event(QEvent*) () from
/usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007f3162dd3b2c in QApplicationPrivate::notify_helper (this=0x9ef430,
receiver=0x186be40, e=0x7f313c28b8e0) at kernel/qapplication.cpp:3720
#12 0x00007f3162dd9000 in QApplication::notify (this=0x7ffec3678ae0,
receiver=0x186be40, e=0x7f313c28b8e0) at kernel/qapplication.cpp:3503
#13 0x00007f3161fe7c2b in QCoreApplication::notifyInternal
(this=0x7ffec3678ae0, receiver=0x186be40, event=event at entry=0x7f313c28b8e0) at
kernel/qcoreapplication.cpp:935
#14 0x00007f3161fe9c9b in sendEvent (event=0x7f313c28b8e0, receiver=<optimized
out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:228
#15 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver at entry=0x0,
event_type=event_type at entry=0, data=0x9ee650) at
kernel/qcoreapplication.cpp:1552
#16 0x00007f3161fea298 in QCoreApplication::sendPostedEvents
(receiver=receiver at entry=0x0, event_type=event_type at entry=0) at
kernel/qcoreapplication.cpp:1410
#17 0x00007f3162040843 in postEventSourceDispatch (s=0xa61050) at
kernel/qeventdispatcher_glib.cpp:271
#18 0x00007f315e43dc3d in g_main_context_dispatch () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007f315e43df20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f315e43dfcc in g_main_context_iteration () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f3162040c57 in QEventDispatcherGlib::processEvents (this=0xa5c000,
flags=...) at kernel/qeventdispatcher_glib.cpp:418
#22 0x00007f3161fe53e2 in QEventLoop::exec (this=this at entry=0x7ffec36789c0,
flags=..., flags at entry=...) at kernel/qeventloop.cpp:204
#23 0x00007f3161fed02c in QCoreApplication::exec () at
kernel/qcoreapplication.cpp:1188
#24 0x00007f316280e31c in QGuiApplication::exec () at
kernel/qguiapplication.cpp:1510
#25 0x00007f3162dcf7a5 in QApplication::exec () at kernel/qapplication.cpp:2956
#26 0x000000000040eebc in main (argc=1, argv=<optimized out>) at
../../app/main.cpp:54

Reported using DrKonqi

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