Bug 309748

Application: systemsettings (1.0)
KDE Platform Version: 4.9.3
Qt Version: 4.8.3
Operating System: Linux 3.5.0-18-generic x86_64
Distribution: Ubuntu 12.10

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

I opened system settings and went to "appearance of desktop"  --> "desktop designs" (something like that, I'm using german language). I changed from Air design to some different design lika Aya, wait for 5 seconds and switch back to Air. Clicking the overwiew button now causes a crash. 
The problem occurs only the first time a design is selected and activated, i.e. switching from Air to Aya a second time doesn't lead to the described crash.

The crash can be reproduced every time.

-- Backtrace:
Application: Systemeinstellungen (systemsettings), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f38f7408780 (LWP 8961))]

Thread 3 (Thread 0x7f38da4d7700 (LWP 8962)):
#0  0x00007f38f4427303 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f38edc09d84 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f38edc09ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f38f4ba7c16 in QEventDispatcherGlib::processEvents (this=0x7f38d40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007f38f4b782bf in QEventLoop::processEvents (this=this@entry=0x7f38da4d6dd0, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f38f4b78548 in QEventLoop::exec (this=0x7f38da4d6dd0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f38f4a79b10 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007f38f4b589af in QInotifyFileSystemWatcherEngine::run (this=0x1a88b40) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f38f4a7caec in QThreadPrivate::start (arg=0x1a88b40) at thread/qthread_unix.cpp:338
#9  0x00007f38ee0d8e9a in start_thread (arg=0x7f38da4d7700) at pthread_create.c:308
#10 0x00007f38f4432cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f38d30fe700 (LWP 15139)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f38f24eccd7 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f38f24ecd09 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f38ee0d8e9a in start_thread (arg=0x7f38d30fe700) at pthread_create.c:308
#4  0x00007f38f4432cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f38f7408780 (LWP 8961)):
[KCrash Handler]
#6  0x00007f38f1756dd4 in QDeclarativeItem::~QDeclarativeItem (this=0x26f68e0, __in_chrg=<optimized out>) at graphicsitems/qdeclarativeitem.cpp:1668
#7  0x00007f38f171a6ee in ~QDeclarativeElement (this=0x26f68e0, __in_chrg=<optimized out>) at ../../include/QtDeclarative/../../src/declarative/qml/qdeclarativeprivate.h:87
#8  QDeclarativePrivate::QDeclarativeElement<QDeclarativeItem>::~QDeclarativeElement (this=0x26f68e0, __in_chrg=<optimized out>) at ../../include/QtDeclarative/../../src/declarative/qml/qdeclarativeprivate.h:87
#9  0x00007f38f4b8e468 in QObject::event (this=0x26f68e0, e=<optimized out>) at kernel/qobject.cpp:1176
#10 0x00007f38f57d5e9c in QApplicationPrivate::notify_helper (this=this@entry=0x1405650, receiver=receiver@entry=0x26f68e0, e=e@entry=0x1c001b0) at kernel/qapplication.cpp:4562
#11 0x00007f38f57da30a in QApplication::notify (this=0x7fff5ca5fdf0, receiver=0x26f68e0, e=0x1c001b0) at kernel/qapplication.cpp:4423
#12 0x00007f38f64de1d6 in KApplication::notify (this=0x7fff5ca5fdf0, receiver=0x26f68e0, event=0x1c001b0) at ../../kdeui/kernel/kapplication.cpp:311
#13 0x00007f38f4b7956e in QCoreApplication::notifyInternal (this=0x7fff5ca5fdf0, receiver=receiver@entry=0x26f68e0, event=event@entry=0x1c001b0) at kernel/qcoreapplication.cpp:915
#14 0x00007f38f4b7d3f1 in sendEvent (event=0x1c001b0, receiver=0x26f68e0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#15 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x13c41f0) at kernel/qcoreapplication.cpp:1539
#16 0x00007f38f4ba7a63 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#17 postEventSourceDispatch (s=0x14015a0) at kernel/qeventdispatcher_glib.cpp:279
#18 0x00007f38edc09ab5 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007f38edc09de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f38edc09ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f38f4ba7bf6 in QEventDispatcherGlib::processEvents (this=0x13c5ad0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#22 0x00007f38f587ac1e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#23 0x00007f38f4b782bf in QEventLoop::processEvents (this=this@entry=0x7fff5ca5fcd0, flags=...) at kernel/qeventloop.cpp:149
#24 0x00007f38f4b78548 in QEventLoop::exec (this=0x7fff5ca5fcd0, flags=...) at kernel/qeventloop.cpp:204
#25 0x00007f38f4b7d708 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1187
#26 0x000000000040a98e in main (argc=5, argv=0x7fff5ca5ff38) at ../../../systemsettings/app/main.cpp:49

This bug may be a duplicate of or related to bug 304617.

Possible duplicates by query: bug 309287, bug 306267, bug 306159.

Reported using DrKonqi