Bug 310522

Application: systemsettings (1.0)
KDE Platform Version: 4.9.2
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 was navigating system settings in tree view. I was looking at Work Space settings and clicked on a different section in the tree menu. The window disappeared and the Crash Reporting Assistant popped up. At this point, it appeared to be an issue with KDE Workspace; kde-workspace-dbg was downloaded and installed because of missing debug symbols. 

I am using Kubuntu 12.10, so KDE was installed from Ubuntu or Canonical.

-- 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 0x7f1941431780 (LWP 2086))]

Thread 4 (Thread 0x7f1923e79700 (LWP 2092)):
#0  0x00007f193810605d in __pthread_mutex_unlock_usercnt (mutex=<optimized out>, decr=<optimized out>) at pthread_mutex_unlock.c:52
#1  __pthread_mutex_unlock (mutex=0x7f191c000a60) at pthread_mutex_unlock.c:290
#2  0x00007f1937c70c61 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1937c339a9 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f1937c33de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f1937c33ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f193ebcfc16 in QEventDispatcherGlib::processEvents (this=0x7f191c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#7  0x00007f193eba02bf in QEventLoop::processEvents (this=this@entry=0x7f1923e78dd0, flags=...) at kernel/qeventloop.cpp:149
#8  0x00007f193eba0548 in QEventLoop::exec (this=0x7f1923e78dd0, flags=...) at kernel/qeventloop.cpp:204
#9  0x00007f193eaa1b10 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#10 0x00007f193eb809af in QInotifyFileSystemWatcherEngine::run (this=0x1872f10) at io/qfilesystemwatcher_inotify.cpp:248
#11 0x00007f193eaa4aec in QThreadPrivate::start (arg=0x1872f10) at thread/qthread_unix.cpp:338
#12 0x00007f1938102e9a in start_thread (arg=0x7f1923e79700) at pthread_create.c:308
#13 0x00007f193e45acbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#14 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f1912762700 (LWP 2308)):
#0  0x00007f193e44f303 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f1937c33d84 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1937c341e2 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1912a4e3b6 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f1937c57645 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f1938102e9a in start_thread (arg=0x7f1912762700) at pthread_create.c:308
#6  0x00007f193e45acbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f1906f86700 (LWP 2532)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f193c514cd7 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f193c514d09 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f1938102e9a in start_thread (arg=0x7f1906f86700) at pthread_create.c:308
#4  0x00007f193e45acbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f1941431780 (LWP 2086)):
[KCrash Handler]
#6  0x00007f193b77edd4 in QDeclarativeItem::~QDeclarativeItem (this=0x46a0220, __in_chrg=<optimized out>) at graphicsitems/qdeclarativeitem.cpp:1668
#7  0x00007f193b7426ee in ~QDeclarativeElement (this=0x46a0220, __in_chrg=<optimized out>) at ../../include/QtDeclarative/../../src/declarative/qml/qdeclarativeprivate.h:87
#8  QDeclarativePrivate::QDeclarativeElement<QDeclarativeItem>::~QDeclarativeElement (this=0x46a0220, __in_chrg=<optimized out>) at ../../include/QtDeclarative/../../src/declarative/qml/qdeclarativeprivate.h:87
#9  0x00007f193ebb6468 in QObject::event (this=0x46a0220, e=<optimized out>) at kernel/qobject.cpp:1176
#10 0x00007f193f7fde9c in QApplicationPrivate::notify_helper (this=this@entry=0x124a9d0, receiver=receiver@entry=0x46a0220, e=e@entry=0x1d490d0) at kernel/qapplication.cpp:4562
#11 0x00007f193f80230a in QApplication::notify (this=0x7fff85032c30, receiver=0x46a0220, e=0x1d490d0) at kernel/qapplication.cpp:4423
#12 0x00007f19405061d6 in KApplication::notify (this=0x7fff85032c30, receiver=0x46a0220, event=0x1d490d0) at ../../kdeui/kernel/kapplication.cpp:311
#13 0x00007f193eba156e in QCoreApplication::notifyInternal (this=0x7fff85032c30, receiver=receiver@entry=0x46a0220, event=event@entry=0x1d490d0) at kernel/qcoreapplication.cpp:915
#14 0x00007f193eba53f1 in sendEvent (event=0x1d490d0, receiver=0x46a0220) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#15 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x11f41f0) at kernel/qcoreapplication.cpp:1539
#16 0x00007f193ebcfa63 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#17 postEventSourceDispatch (s=0x122f490) at kernel/qeventdispatcher_glib.cpp:279
#18 0x00007f1937c33ab5 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007f1937c33de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f1937c33ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f193ebcfbf6 in QEventDispatcherGlib::processEvents (this=0x123e110, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#22 0x00007f193f8a2c1e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#23 0x00007f193eba02bf in QEventLoop::processEvents (this=this@entry=0x7fff85032b10, flags=...) at kernel/qeventloop.cpp:149
#24 0x00007f193eba0548 in QEventLoop::exec (this=0x7fff85032b10, flags=...) at kernel/qeventloop.cpp:204
#25 0x00007f193eba5708 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1187
#26 0x000000000040a98e in main (argc=5, argv=0x7fff85032d78) at ../../../systemsettings/app/main.cpp:49

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

Possible duplicates by query: bug 309748, bug 309287, bug 306267, bug 306159.

Reported using DrKonqi