Bug 331074

Application: systemsettings (4.11.3)
KDE Platform Version: 4.11.3
Qt Version: 4.8.4
Operating System: Linux 3.11.0-15-generic x86_64
Distribution: Ubuntu 13.10

-- Information about the crash:
- What I was doing when the application crashed: Increased button and border sizes in "Configure Decorations" for Oxygen to make them easier to use on my touchscreen laptop. I hit apply and the changes were applied. I then pressed "Back" arrow and System Settings crashed.

The crash can be reproduced sometimes.

-- Backtrace:
Application: System Settings (systemsettings), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f5e905167c0 (LWP 4230))]

Thread 3 (Thread 0x7f5e73348700 (LWP 4231)):
#0  0x00007f5e86948055 in __GI___pthread_mutex_lock (mutex=0x7f5e6c000a60) at pthread_mutex_lock.c:95
#1  0x00007f5e864ad3a1 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f5e8646d68a in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5e8646d7ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f5e8dc90a76 in QEventDispatcherGlib::processEvents (this=0x7f5e6c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0x00007f5e8dc625ef in QEventLoop::processEvents (this=this@entry=0x7f5e73347d70, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007f5e8dc628e5 in QEventLoop::exec (this=this@entry=0x7f5e73347d70, flags=...) at kernel/qeventloop.cpp:204
#7  0x00007f5e8db6188f in QThread::exec (this=this@entry=0xeb3b30) at thread/qthread.cpp:542
#8  0x00007f5e8dc43d13 in QInotifyFileSystemWatcherEngine::run (this=0xeb3b30) at io/qfilesystemwatcher_inotify.cpp:265
#9  0x00007f5e8db63f2f in QThreadPrivate::start (arg=0xeb3b30) at thread/qthread_unix.cpp:338
#10 0x00007f5e86945f6e in start_thread (arg=0x7f5e73348700) at pthread_create.c:311
#11 0x00007f5e8d5179cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 2 (Thread 0x7f5e72642700 (LWP 4232)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f5e8ad6106b in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f5e8ad610a9 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f5e86945f6e in start_thread (arg=0x7f5e72642700) at pthread_create.c:311
#4  0x00007f5e8d5179cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 1 (Thread 0x7f5e905167c0 (LWP 4230)):
[KCrash Handler]
#6  0x00007f5e89fb8334 in QDeclarativeItem::~QDeclarativeItem (this=0x10cd540, __in_chrg=<optimized out>) at graphicsitems/qdeclarativeitem.cpp:1668
#7  0x00007f5e89f7fe96 in ~QDeclarativeElement (this=0x10cd540, __in_chrg=<optimized out>) at ../../include/QtDeclarative/../../src/declarative/qml/qdeclarativeprivate.h:87
#8  QDeclarativePrivate::QDeclarativeElement<QDeclarativeItem>::~QDeclarativeElement (this=0x10cd540, __in_chrg=<optimized out>) at ../../include/QtDeclarative/../../src/declarative/qml/qdeclarativeprivate.h:87
#9  0x00007f5e8dc7be08 in QObject::event (this=0x10cd540, e=<optimized out>) at kernel/qobject.cpp:1175
#10 0x00007f5e8e8cfdfc in QApplicationPrivate::notify_helper (this=this@entry=0x875260, receiver=receiver@entry=0x10cd540, e=e@entry=0xfeaca0) at kernel/qapplication.cpp:4567
#11 0x00007f5e8e8d6470 in QApplication::notify (this=this@entry=0x7fff7eefd670, receiver=receiver@entry=0x10cd540, e=e@entry=0xfeaca0) at kernel/qapplication.cpp:4353
#12 0x00007f5e8f5d9a6a in KApplication::notify (this=0x7fff7eefd670, receiver=0x10cd540, event=0xfeaca0) at ../../kdeui/kernel/kapplication.cpp:311
#13 0x00007f5e8dc638bd in QCoreApplication::notifyInternal (this=0x7fff7eefd670, receiver=receiver@entry=0x10cd540, event=event@entry=0xfeaca0) at kernel/qcoreapplication.cpp:946
#14 0x00007f5e8dc66e1f in sendEvent (event=0xfeaca0, receiver=0x10cd540) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#15 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x8161f0) at kernel/qcoreapplication.cpp:1570
#16 0x00007f5e8dc672c3 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1463
#17 0x00007f5e8dc91073 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#18 postEventSourceDispatch (s=0x857650) at kernel/qeventdispatcher_glib.cpp:279
#19 0x00007f5e8646d3b6 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f5e8646d708 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f5e8646d7ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f5e8dc90a55 in QEventDispatcherGlib::processEvents (this=0x817ad0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#23 0x00007f5e8e9719d6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#24 0x00007f5e8dc625ef in QEventLoop::processEvents (this=this@entry=0x7fff7eefd570, flags=...) at kernel/qeventloop.cpp:149
#25 0x00007f5e8dc628e5 in QEventLoop::exec (this=this@entry=0x7fff7eefd570, flags=...) at kernel/qeventloop.cpp:204
#26 0x00007f5e8dc67e5b in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218
#27 0x000000000040aadb in ?? ()
#28 0x00007f5e8d43ede5 in __libc_start_main (main=0x40a6d0, argc=5, ubp_av=0x7fff7eefd7b8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff7eefd7a8) at libc-start.c:260
#29 0x000000000040ab31 in _start ()

Possible duplicates by query: bug 330803, bug 329777, bug 329142, bug 326353, bug 324077.

Reported using DrKonqi