Application: plasma-desktop (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:

I was trying to learn and use the Activities system for the first time.  The crash came shortly after creating the third new activity.  It may have been while trying to switch a window to the new activity, from the title bar context menu, but I can't remember exactly.  It could certainly be a duplicate, but the list of possible duplicates was overwhelming; too long to possibly check.  For the ones I did look at that seemed somewhat similar, it was too hard to determine which, if any, might be right.

I don't think I was doing much more than putting the Activity system through its basic paces. :(

Thank you.

-- 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 0x7fd1de4b87c0 (LWP 3243))]

Thread 12 (Thread 0x7fd1bf727700 (LWP 3244)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd1d715b06b in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007fd1d715b0a9 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007fd1d1812f6e in start_thread (arg=0x7fd1bf727700) at pthread_create.c:311
#4  0x00007fd1ddda89cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 11 (Thread 0x7fd13414f700 (LWP 3245)):
#0  0x00007fd1ddd9bf7d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fd1d11086a4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd1d11087ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd1da974a76 in QEventDispatcherGlib::processEvents (this=0x7fd12c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007fd1da9465ef in QEventLoop::processEvents (this=this@entry=0x7fd13414ed70, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fd1da9468e5 in QEventLoop::exec (this=this@entry=0x7fd13414ed70, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007fd1da84588f in QThread::exec (this=this@entry=0x2f8d0b0) at thread/qthread.cpp:542
#7  0x00007fd1da927d13 in QInotifyFileSystemWatcherEngine::run (this=0x2f8d0b0) at io/qfilesystemwatcher_inotify.cpp:265
#8  0x00007fd1da847f2f in QThreadPrivate::start (arg=0x2f8d0b0) at thread/qthread_unix.cpp:338
#9  0x00007fd1d1812f6e in start_thread (arg=0x7fd13414f700) at pthread_create.c:311
#10 0x00007fd1ddda89cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 10 (Thread 0x7fd1332df700 (LWP 3246)):
#0  0x00007fd1d11480ea in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fd1d1148399 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd1d1107d59 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd1d11085c3 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fd1d11087ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fd1da974a76 in QEventDispatcherGlib::processEvents (this=0x7fd1240008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0x00007fd1da9465ef in QEventLoop::processEvents (this=this@entry=0x7fd1332ded70, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007fd1da9468e5 in QEventLoop::exec (this=this@entry=0x7fd1332ded70, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007fd1da84588f in QThread::exec (this=this@entry=0x27a0490) at thread/qthread.cpp:542
#9  0x00007fd1da927d13 in QInotifyFileSystemWatcherEngine::run (this=0x27a0490) at io/qfilesystemwatcher_inotify.cpp:265
#10 0x00007fd1da847f2f in QThreadPrivate::start (arg=0x27a0490) at thread/qthread_unix.cpp:338
#11 0x00007fd1d1812f6e in start_thread (arg=0x7fd1332df700) at pthread_create.c:311
#12 0x00007fd1ddda89cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 9 (Thread 0x7fd11f7fe700 (LWP 5193)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd1da848406 in wait (time=18446744073709551615, this=0x30e99f0) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=this@entry=0x30fea78, mutex=0x2fb0f00, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007fd1d63d3e6c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x30fea50, th=0x44c98c0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007fd1d63d6903 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2fb7d50, th=0x44c98c0, previous=0x3dfda30) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007fd1d63d561f in ThreadWeaver::Thread::run (this=0x44c98c0) at ../../../threadweaver/Weaver/Thread.cpp:98
#6  0x00007fd1da847f2f in QThreadPrivate::start (arg=0x44c98c0) at thread/qthread_unix.cpp:338
#7  0x00007fd1d1812f6e in start_thread (arg=0x7fd11f7fe700) at pthread_create.c:311
#8  0x00007fd1ddda89cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 8 (Thread 0x7fd11ffff700 (LWP 5194)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd1da848406 in wait (time=18446744073709551615, this=0x30e99f0) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=this@entry=0x30fea78, mutex=0x2fb0f00, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007fd1d63d3e6c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x30fea50, th=0x5b3a060) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007fd1d63d6903 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2fb7d50, th=0x5b3a060, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007fd1d63d691c in ThreadWeaver::WorkingHardState::applyForWork (this=0x2fb7d50, th=0x5b3a060, previous=0x3042100) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#6  0x00007fd1d63d561f in ThreadWeaver::Thread::run (this=0x5b3a060) at ../../../threadweaver/Weaver/Thread.cpp:98
#7  0x00007fd1da847f2f in QThreadPrivate::start (arg=0x5b3a060) at thread/qthread_unix.cpp:338
#8  0x00007fd1d1812f6e in start_thread (arg=0x7fd11ffff700) at pthread_create.c:311
#9  0x00007fd1ddda89cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 7 (Thread 0x7fd11c95b700 (LWP 5195)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd1da848406 in wait (time=18446744073709551615, this=0x30e99f0) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=this@entry=0x30fea78, mutex=0x2fb0f00, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007fd1d63d3e6c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x30fea50, th=0x55dbf40) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007fd1d63d6903 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2fb7d50, th=0x55dbf40, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007fd1d63d691c in ThreadWeaver::WorkingHardState::applyForWork (this=0x2fb7d50, th=0x55dbf40, previous=0x58adf30) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#6  0x00007fd1d63d561f in ThreadWeaver::Thread::run (this=0x55dbf40) at ../../../threadweaver/Weaver/Thread.cpp:98
#7  0x00007fd1da847f2f in QThreadPrivate::start (arg=0x55dbf40) at thread/qthread_unix.cpp:338
#8  0x00007fd1d1812f6e in start_thread (arg=0x7fd11c95b700) at pthread_create.c:311
#9  0x00007fd1ddda89cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 6 (Thread 0x7fd117fff700 (LWP 5196)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd1da848406 in wait (time=18446744073709551615, this=0x30e99f0) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=this@entry=0x30fea78, mutex=0x2fb0f00, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007fd1d63d3e6c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x30fea50, th=0x3b0adb0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007fd1d63d6903 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2fb7d50, th=0x3b0adb0, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007fd1d63d691c in ThreadWeaver::WorkingHardState::applyForWork (this=0x2fb7d50, th=0x3b0adb0, previous=0x2538630) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#6  0x00007fd1d63d561f in ThreadWeaver::Thread::run (this=0x3b0adb0) at ../../../threadweaver/Weaver/Thread.cpp:98
#7  0x00007fd1da847f2f in QThreadPrivate::start (arg=0x3b0adb0) at thread/qthread_unix.cpp:338
#8  0x00007fd1d1812f6e in start_thread (arg=0x7fd117fff700) at pthread_create.c:311
#9  0x00007fd1ddda89cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 5 (Thread 0x7fd1177fe700 (LWP 5197)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd1da848406 in wait (time=18446744073709551615, this=0x30e99f0) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=this@entry=0x30fea78, mutex=0x2fb0f00, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007fd1d63d3e6c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x30fea50, th=0x2277d20) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007fd1d63d6903 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2fb7d50, th=0x2277d20, previous=0x268c7d0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007fd1d63d561f in ThreadWeaver::Thread::run (this=0x2277d20) at ../../../threadweaver/Weaver/Thread.cpp:98
#6  0x00007fd1da847f2f in QThreadPrivate::start (arg=0x2277d20) at thread/qthread_unix.cpp:338
#7  0x00007fd1d1812f6e in start_thread (arg=0x7fd1177fe700) at pthread_create.c:311
#8  0x00007fd1ddda89cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 4 (Thread 0x7fd116114700 (LWP 5198)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd1da848406 in wait (time=18446744073709551615, this=0x30e99f0) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=this@entry=0x30fea78, mutex=0x2fb0f00, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007fd1d63d3e6c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x30fea50, th=0x48e20d0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007fd1d63d6903 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2fb7d50, th=0x48e20d0, previous=0x5da9830) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007fd1d63d561f in ThreadWeaver::Thread::run (this=0x48e20d0) at ../../../threadweaver/Weaver/Thread.cpp:98
#6  0x00007fd1da847f2f in QThreadPrivate::start (arg=0x48e20d0) at thread/qthread_unix.cpp:338
#7  0x00007fd1d1812f6e in start_thread (arg=0x7fd116114700) at pthread_create.c:311
#8  0x00007fd1ddda89cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 3 (Thread 0x7fd115913700 (LWP 5199)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd1da848406 in wait (time=18446744073709551615, this=0x30e99f0) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=this@entry=0x30fea78, mutex=0x2fb0f00, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007fd1d63d3e6c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x30fea50, th=0x5c15320) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007fd1d63d6903 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2fb7d50, th=0x5c15320, previous=0x480db70) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007fd1d63d561f in ThreadWeaver::Thread::run (this=0x5c15320) at ../../../threadweaver/Weaver/Thread.cpp:98
#6  0x00007fd1da847f2f in QThreadPrivate::start (arg=0x5c15320) at thread/qthread_unix.cpp:338
#7  0x00007fd1d1812f6e in start_thread (arg=0x7fd115913700) at pthread_create.c:311
#8  0x00007fd1ddda89cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 2 (Thread 0x7fd115112700 (LWP 5200)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd1da848406 in wait (time=18446744073709551615, this=0x30e99f0) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=this@entry=0x30fea78, mutex=0x2fb0f00, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007fd1d63d3e6c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x30fea50, th=0x33b98e0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007fd1d63d6903 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2fb7d50, th=0x33b98e0, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007fd1d63d691c in ThreadWeaver::WorkingHardState::applyForWork (this=0x2fb7d50, th=0x33b98e0, previous=0x2528380) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#6  0x00007fd1d63d561f in ThreadWeaver::Thread::run (this=0x33b98e0) at ../../../threadweaver/Weaver/Thread.cpp:98
#7  0x00007fd1da847f2f in QThreadPrivate::start (arg=0x33b98e0) at thread/qthread_unix.cpp:338
#8  0x00007fd1d1812f6e in start_thread (arg=0x7fd115112700) at pthread_create.c:311
#9  0x00007fd1ddda89cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 1 (Thread 0x7fd1de4b87c0 (LWP 3243)):
[KCrash Handler]
#6  0x00007fd1dc543334 in QDeclarativeItem::~QDeclarativeItem (this=0x5b01560, __in_chrg=<optimized out>) at graphicsitems/qdeclarativeitem.cpp:1668
#7  0x00007fd13e798aa1 in ~QDeclarativeElement (this=0x5b01560, __in_chrg=<optimized out>) at /usr/include/qt4/QtDeclarative/qdeclarativeprivate.h:87
#8  QDeclarativePrivate::QDeclarativeElement<Plasma::FrameSvgItem>::~QDeclarativeElement (this=0x5b01560, __in_chrg=<optimized out>) at /usr/include/qt4/QtDeclarative/qdeclarativeprivate.h:87
#9  0x00007fd1da95fe08 in QObject::event (this=0x5b01560, e=<optimized out>) at kernel/qobject.cpp:1175
#10 0x00007fd1d9ce4dfc in QApplicationPrivate::notify_helper (this=this@entry=0x22cbcb0, receiver=receiver@entry=0x5b01560, e=e@entry=0x73fde30) at kernel/qapplication.cpp:4567
#11 0x00007fd1d9ceb470 in QApplication::notify (this=this@entry=0x22b5260, receiver=receiver@entry=0x5b01560, e=e@entry=0x73fde30) at kernel/qapplication.cpp:4353
#12 0x00007fd1db60ba6a in KApplication::notify (this=0x22b5260, receiver=0x5b01560, event=0x73fde30) at ../../kdeui/kernel/kapplication.cpp:311
#13 0x00007fd1da9478bd in QCoreApplication::notifyInternal (this=0x22b5260, receiver=receiver@entry=0x5b01560, event=event@entry=0x73fde30) at kernel/qcoreapplication.cpp:946
#14 0x00007fd1da94ae1f in sendEvent (event=0x73fde30, receiver=0x5b01560) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#15 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x223f1f0) at kernel/qcoreapplication.cpp:1570
#16 0x00007fd1da94b2c3 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1463
#17 0x00007fd1da975073 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#18 postEventSourceDispatch (s=0x22caac0) at kernel/qeventdispatcher_glib.cpp:279
#19 0x00007fd1d11083b6 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007fd1d1108708 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007fd1d11087ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007fd1da974a55 in QEventDispatcherGlib::processEvents (this=0x2240ad0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#23 0x00007fd1d9d869d6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#24 0x00007fd1da9465ef in QEventLoop::processEvents (this=this@entry=0x7fffd38e38a0, flags=...) at kernel/qeventloop.cpp:149
#25 0x00007fd1da9468e5 in QEventLoop::exec (this=this@entry=0x7fffd38e38a0, flags=...) at kernel/qeventloop.cpp:204
#26 0x00007fd1da94be5b in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218
#27 0x00007fd1d9ce334c in QApplication::exec () at kernel/qapplication.cpp:3828
#28 0x00007fd1de0b227c in kdemain (argc=1, argv=0x7fffd38e3af8) at ../../../../plasma/desktop/shell/main.cpp:126
#29 0x00007fd1ddccfde5 in __libc_start_main (main=0x4006e0 <main(int, char**)>, argc=1, ubp_av=0x7fffd38e3af8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffd38e3ae8) at libc-start.c:260
#30 0x000000000040070e in _start ()

Possible duplicates by query: bug 329239, bug 329154, bug 329067, bug 329044, bug 328850.

Reported using DrKonqi