Bug 316142

Application: plasma-desktop (0.4)
KDE Platform Version: 4.9.2
Qt Version: 4.8.3
Operating System: Linux 3.5.0-17-generic x86_64
Distribution: Ubuntu 12.10

-- Information about the crash:
- What I was doing when the application crashed:
Asked activity manager to add widgets, no activities open.  Skipped straight to the bug report, said the program crashed.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f42e3e95780 (LWP 1574))]

Thread 4 (Thread 0x7f42d9466700 (LWP 1575)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f42f0f25cd7 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f42f0f25d09 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f42eb5bee9a in start_thread (arg=0x7f42d9466700) at pthread_create.c:308
#4  0x00007f42f7228cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f42d1524700 (LWP 1577)):
#0  0x00007f42eb5c0f69 in __pthread_mutex_lock (mutex=0x7f42cc000a60) at pthread_mutex_lock.c:92
#1  0x00007f42eaefcc31 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f42eaebf4d3 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f42eaebfcab in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f42eaebfea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f42f3ecec16 in QEventDispatcherGlib::processEvents (this=0x7f42cc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0x00007f42f3e9f2bf in QEventLoop::processEvents (this=this@entry=0x7f42d1523dd0, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f42f3e9f548 in QEventLoop::exec (this=0x7f42d1523dd0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007f42f3da0b10 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#9  0x00007f42f3e7f9af in QInotifyFileSystemWatcherEngine::run (this=0x21d93e0) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x00007f42f3da3aec in QThreadPrivate::start (arg=0x21d93e0) at thread/qthread_unix.cpp:338
#11 0x00007f42eb5bee9a in start_thread (arg=0x7f42d1524700) at pthread_create.c:308
#12 0x00007f42f7228cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f42cbd97700 (LWP 1578)):
#0  0x00007f42f72368c0 in pthread_mutex_lock (mutex=0x7f42c4000a60) at forward.c:182
#1  0x00007f42eaefcc31 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f42eaebf6eb in g_main_context_query () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f42eaebfcf9 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f42eaebfea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f42f3ecec16 in QEventDispatcherGlib::processEvents (this=0x7f42c40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0x00007f42f3e9f2bf in QEventLoop::processEvents (this=this@entry=0x7f42cbd96dd0, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f42f3e9f548 in QEventLoop::exec (this=0x7f42cbd96dd0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007f42f3da0b10 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#9  0x00007f42f3e7f9af in QInotifyFileSystemWatcherEngine::run (this=0x29dd3c0) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x00007f42f3da3aec in QThreadPrivate::start (arg=0x29dd3c0) at thread/qthread_unix.cpp:338
#11 0x00007f42eb5bee9a in start_thread (arg=0x7f42cbd97700) at pthread_create.c:308
#12 0x00007f42f7228cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f42e3e95780 (LWP 1574)):
[KCrash Handler]
#6  0x00007f42f5a93dd4 in QDeclarativeItem::~QDeclarativeItem (this=0x49addd0, __in_chrg=<optimized out>) at graphicsitems/qdeclarativeitem.cpp:1668
#7  0x00007f42d85e4281 in ~QDeclarativeElement (this=0x458e990, __in_chrg=<optimized out>) at /usr/include/qt4/QtDeclarative/qdeclarativeprivate.h:87
#8  QDeclarativePrivate::QDeclarativeElement<DialogProxy>::~QDeclarativeElement (this=0x458e990, __in_chrg=<optimized out>) at /usr/include/qt4/QtDeclarative/qdeclarativeprivate.h:87
#9  0x00000000049addd0 in ?? ()
#10 0x00007f42f3eb5468 in QObject::event (this=0x49addd0, e=<optimized out>) at kernel/qobject.cpp:1176
#11 0x00007f42f3247e9c in QApplicationPrivate::notify_helper (this=this@entry=0x20a7d40, receiver=receiver@entry=0x49addd0, e=e@entry=0x4560580) at kernel/qapplication.cpp:4562
#12 0x00007f42f324c30a in QApplication::notify (this=0x2094fd0, receiver=0x49addd0, e=0x4560580) at kernel/qapplication.cpp:4423
#13 0x00007f42f4b591d6 in KApplication::notify (this=0x2094fd0, receiver=0x49addd0, event=0x4560580) at ../../kdeui/kernel/kapplication.cpp:311
#14 0x00007f42f3ea056e in QCoreApplication::notifyInternal (this=0x2094fd0, receiver=receiver@entry=0x49addd0, event=event@entry=0x4560580) at kernel/qcoreapplication.cpp:915
#15 0x00007f42f3ea43f1 in sendEvent (event=0x4560580, receiver=0x49addd0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#16 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x202f1f0) at kernel/qcoreapplication.cpp:1539
#17 0x00007f42f3ecea63 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#18 postEventSourceDispatch (s=0x20a9900) at kernel/qeventdispatcher_glib.cpp:279
#19 0x00007f42eaebfab5 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f42eaebfde8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f42eaebfea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f42f3ecebf6 in QEventDispatcherGlib::processEvents (this=0x2030ad0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#23 0x00007f42f32ecc1e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#24 0x00007f42f3e9f2bf in QEventLoop::processEvents (this=this@entry=0x7fffb4610050, flags=...) at kernel/qeventloop.cpp:149
#25 0x00007f42f3e9f548 in QEventLoop::exec (this=0x7fffb4610050, flags=...) at kernel/qeventloop.cpp:204
#26 0x00007f42f3ea4708 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1187
#27 0x00007f42f752f035 in kdemain () from /usr/lib/kde4/libkdeinit/libkdeinit4_plasma-desktop.so
#28 0x00007f42f715676d in __libc_start_main (main=0x4006a0, argc=1, ubp_av=0x7fffb4610348, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffb4610338) at libc-start.c:226
#29 0x00000000004006d1 in _start ()

Possible duplicates by query: bug 314924, bug 297043.

Reported using DrKonqi