Application: plasma-desktop (4.11.11)
KDE Platform Version: 4.14.2
Qt Version: 4.8.6
Operating System: Linux 3.16.0-37-generic x86_64
Distribution: Ubuntu 14.04.2 LTS

-- Information about the crash:
- What I was doing when the application crashed:
I was resuming my laptop from sleep by opening the laptop lid. Immediately after I typed my password and login, I clicked on the Task Manager widget to switch between windows, however, the display hang a while before it crashed.

-- 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 0x7fe1727507c0 (LWP 2074))]

Thread 13 (Thread 0x7fe13f567700 (LWP 2252)):
#0  0x00007fe17203512d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fe165865fe4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fe1658660ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fe16ec167be in QEventDispatcherGlib::processEvents (this=0x7fe1380008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#4  0x00007fe16ebe80af in QEventLoop::processEvents (this=this@entry=0x7fe13f566de0, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fe16ebe83a5 in QEventLoop::exec (this=this@entry=0x7fe13f566de0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007fe16eae4c5f in QThread::exec (this=this@entry=0x2c76550) at thread/qthread.cpp:537
#7  0x00007fe16ebc9823 in QInotifyFileSystemWatcherEngine::run (this=0x2c76550) at io/qfilesystemwatcher_inotify.cpp:265
#8  0x00007fe16eae732f in QThreadPrivate::start (arg=0x2c76550) at thread/qthread_unix.cpp:349
#9  0x00007fe165f77182 in start_thread (arg=0x7fe13f567700) at pthread_create.c:312
#10 0x00007fe17204247d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 12 (Thread 0x7fe13ed66700 (LWP 2253)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fe16b400ffb in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007fe16b401039 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007fe165f77182 in start_thread (arg=0x7fe13ed66700) at pthread_create.c:312
#4  0x00007fe17204247d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 11 (Thread 0x7fe13c95e700 (LWP 2254)):
#0  0x00007fe1658a761d in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fe1658a79a9 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fe1658650f0 in g_main_context_acquire () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fe165865ea5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fe1658660ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fe16ec167be in QEventDispatcherGlib::processEvents (this=0x7fe0b00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#6  0x00007fe16ebe80af in QEventLoop::processEvents (this=this@entry=0x7fe13c95dde0, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007fe16ebe83a5 in QEventLoop::exec (this=this@entry=0x7fe13c95dde0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007fe16eae4c5f in QThread::exec (this=this@entry=0x31611f0) at thread/qthread.cpp:537
#9  0x00007fe16ebc9823 in QInotifyFileSystemWatcherEngine::run (this=0x31611f0) at io/qfilesystemwatcher_inotify.cpp:265
#10 0x00007fe16eae732f in QThreadPrivate::start (arg=0x31611f0) at thread/qthread_unix.cpp:349
#11 0x00007fe165f77182 in start_thread (arg=0x7fe13c95e700) at pthread_create.c:312
#12 0x00007fe17204247d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 10 (Thread 0x7fe0ad979700 (LWP 2255)):
#0  0x00007fe165f79569 in __GI___pthread_mutex_lock (mutex=0x7fe0a8000a60) at ../nptl/pthread_mutex_lock.c:125
#1  0x00007fe1658a7981 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fe165865a6c in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fe165865f7b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fe1658660ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fe16ec167be in QEventDispatcherGlib::processEvents (this=0x7fe0a80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#6  0x00007fe16ebe80af in QEventLoop::processEvents (this=this@entry=0x7fe0ad978de0, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007fe16ebe83a5 in QEventLoop::exec (this=this@entry=0x7fe0ad978de0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007fe16eae4c5f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:537
#9  0x00007fe0b5ae0027 in KCupsConnection::run() () from /usr/lib/libkcupslib.so
#10 0x00007fe16eae732f in QThreadPrivate::start (arg=0x3e1faa0) at thread/qthread_unix.cpp:349
#11 0x00007fe165f77182 in start_thread (arg=0x7fe0ad979700) at pthread_create.c:312
#12 0x00007fe17204247d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 9 (Thread 0x7fe150254700 (LWP 12867)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fe16eae7816 in wait (time=18446744073709551615, this=0x34a2e30) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=this@entry=0x35e41c8, mutex=0x3487f70, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007fe16a679e6c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x35e41a0, th=0x2495650) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007fe16a67c903 in ThreadWeaver::WorkingHardState::applyForWork (this=0x3461b20, th=0x2495650, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007fe16a67c91c in ThreadWeaver::WorkingHardState::applyForWork (this=0x3461b20, th=0x2495650, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#6  0x00007fe16a67c91c in ThreadWeaver::WorkingHardState::applyForWork (this=0x3461b20, th=0x2495650, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#7  0x00007fe16a67c91c in ThreadWeaver::WorkingHardState::applyForWork (this=0x3461b20, th=0x2495650, previous=0x6ebe560) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#8  0x00007fe16a67b61f in ThreadWeaver::Thread::run (this=0x2495650) at ../../../threadweaver/Weaver/Thread.cpp:98
#9  0x00007fe16eae732f in QThreadPrivate::start (arg=0x2495650) at thread/qthread_unix.cpp:349
#10 0x00007fe165f77182 in start_thread (arg=0x7fe150254700) at pthread_create.c:312
#11 0x00007fe17204247d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 8 (Thread 0x7fe0a0db5700 (LWP 12868)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fe16eae7816 in wait (time=18446744073709551615, this=0x34a2e30) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=this@entry=0x35e41c8, mutex=0x3487f70, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007fe16a679e6c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x35e41a0, th=0x5a011b0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007fe16a67c903 in ThreadWeaver::WorkingHardState::applyForWork (this=0x3461b20, th=0x5a011b0, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007fe16a67c91c in ThreadWeaver::WorkingHardState::applyForWork (this=0x3461b20, th=0x5a011b0, previous=0x73f0e30) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#6  0x00007fe16a67b61f in ThreadWeaver::Thread::run (this=0x5a011b0) at ../../../threadweaver/Weaver/Thread.cpp:98
#7  0x00007fe16eae732f in QThreadPrivate::start (arg=0x5a011b0) at thread/qthread_unix.cpp:349
#8  0x00007fe165f77182 in start_thread (arg=0x7fe0a0db5700) at pthread_create.c:312
#9  0x00007fe17204247d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 7 (Thread 0x7fe09bfff700 (LWP 12869)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fe16eae7816 in wait (time=18446744073709551615, this=0x34a2e30) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=this@entry=0x35e41c8, mutex=0x3487f70, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007fe16a679e6c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x35e41a0, th=0x7145a00) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007fe16a67c903 in ThreadWeaver::WorkingHardState::applyForWork (this=0x3461b20, th=0x7145a00, previous=0x7564160) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007fe16a67b61f in ThreadWeaver::Thread::run (this=0x7145a00) at ../../../threadweaver/Weaver/Thread.cpp:98
#6  0x00007fe16eae732f in QThreadPrivate::start (arg=0x7145a00) at thread/qthread_unix.cpp:349
#7  0x00007fe165f77182 in start_thread (arg=0x7fe09bfff700) at pthread_create.c:312
#8  0x00007fe17204247d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 6 (Thread 0x7fe09b7fe700 (LWP 12870)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fe16eae7816 in wait (time=18446744073709551615, this=0x34a2e30) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=this@entry=0x35e41c8, mutex=0x3487f70, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007fe16a679e6c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x35e41a0, th=0x2ccdf70) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007fe16a67c903 in ThreadWeaver::WorkingHardState::applyForWork (this=0x3461b20, th=0x2ccdf70, previous=0x5d9c820) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007fe16a67b61f in ThreadWeaver::Thread::run (this=0x2ccdf70) at ../../../threadweaver/Weaver/Thread.cpp:98
#6  0x00007fe16eae732f in QThreadPrivate::start (arg=0x2ccdf70) at thread/qthread_unix.cpp:349
#7  0x00007fe165f77182 in start_thread (arg=0x7fe09b7fe700) at pthread_create.c:312
#8  0x00007fe17204247d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 5 (Thread 0x7fe09affd700 (LWP 12871)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fe16eae7816 in wait (time=18446744073709551615, this=0x34a2e30) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=this@entry=0x35e41c8, mutex=0x3487f70, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007fe16a679e6c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x35e41a0, th=0x3a0d560) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007fe16a67c903 in ThreadWeaver::WorkingHardState::applyForWork (this=0x3461b20, th=0x3a0d560, previous=0x824ca70) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007fe16a67b61f in ThreadWeaver::Thread::run (this=0x3a0d560) at ../../../threadweaver/Weaver/Thread.cpp:98
#6  0x00007fe16eae732f in QThreadPrivate::start (arg=0x3a0d560) at thread/qthread_unix.cpp:349
#7  0x00007fe165f77182 in start_thread (arg=0x7fe09affd700) at pthread_create.c:312
#8  0x00007fe17204247d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 4 (Thread 0x7fe09a7fc700 (LWP 2626)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fe16eae7816 in wait (time=18446744073709551615, this=0x34a2e30) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=this@entry=0x35e41c8, mutex=0x3487f70, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007fe16a679e6c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x35e41a0, th=0x6e3a690) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007fe16a67c903 in ThreadWeaver::WorkingHardState::applyForWork (this=0x3461b20, th=0x6e3a690, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007fe16a67c91c in ThreadWeaver::WorkingHardState::applyForWork (this=0x3461b20, th=0x6e3a690, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#6  0x00007fe16a67c91c in ThreadWeaver::WorkingHardState::applyForWork (this=0x3461b20, th=0x6e3a690, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#7  0x00007fe16a67c91c in ThreadWeaver::WorkingHardState::applyForWork (this=0x3461b20, th=0x6e3a690, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#8  0x00007fe16a67c91c in ThreadWeaver::WorkingHardState::applyForWork (this=0x3461b20, th=0x6e3a690, previous=0x652cd10) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#9  0x00007fe16a67b61f in ThreadWeaver::Thread::run (this=0x6e3a690) at ../../../threadweaver/Weaver/Thread.cpp:98
#10 0x00007fe16eae732f in QThreadPrivate::start (arg=0x6e3a690) at thread/qthread_unix.cpp:349
#11 0x00007fe165f77182 in start_thread (arg=0x7fe09a7fc700) at pthread_create.c:312
#12 0x00007fe17204247d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 3 (Thread 0x7fe099ffb700 (LWP 2627)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fe16eae7816 in wait (time=18446744073709551615, this=0x34a2e30) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=this@entry=0x35e41c8, mutex=0x3487f70, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007fe16a679e6c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x35e41a0, th=0x71142a0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007fe16a67c903 in ThreadWeaver::WorkingHardState::applyForWork (this=0x3461b20, th=0x71142a0, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007fe16a67c91c in ThreadWeaver::WorkingHardState::applyForWork (this=0x3461b20, th=0x71142a0, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#6  0x00007fe16a67c91c in ThreadWeaver::WorkingHardState::applyForWork (this=0x3461b20, th=0x71142a0, previous=0x824ca70) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#7  0x00007fe16a67b61f in ThreadWeaver::Thread::run (this=0x71142a0) at ../../../threadweaver/Weaver/Thread.cpp:98
#8  0x00007fe16eae732f in QThreadPrivate::start (arg=0x71142a0) at thread/qthread_unix.cpp:349
#9  0x00007fe165f77182 in start_thread (arg=0x7fe099ffb700) at pthread_create.c:312
#10 0x00007fe17204247d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7fe0997fa700 (LWP 2628)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fe16eae7816 in wait (time=18446744073709551615, this=0x34a2e30) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=this@entry=0x35e41c8, mutex=0x3487f70, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007fe16a679e6c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x35e41a0, th=0x7605240) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007fe16a67c903 in ThreadWeaver::WorkingHardState::applyForWork (this=0x3461b20, th=0x7605240, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007fe16a67c91c in ThreadWeaver::WorkingHardState::applyForWork (this=0x3461b20, th=0x7605240, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#6  0x00007fe16a67c91c in ThreadWeaver::WorkingHardState::applyForWork (this=0x3461b20, th=0x7605240, previous=0x321ba10) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#7  0x00007fe16a67b61f in ThreadWeaver::Thread::run (this=0x7605240) at ../../../threadweaver/Weaver/Thread.cpp:98
#8  0x00007fe16eae732f in QThreadPrivate::start (arg=0x7605240) at thread/qthread_unix.cpp:349
#9  0x00007fe165f77182 in start_thread (arg=0x7fe0997fa700) at pthread_create.c:312
#10 0x00007fe17204247d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7fe1727507c0 (LWP 2074)):
[KCrash Handler]
#6  0x00007fe16b45057f in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#7  0x00007fe16b45a664 in QScriptValue::call(QScriptValue const&, QList<QScriptValue> const&) () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#8  0x00007fe17084d5e5 in QDeclarativeQtScriptExpression::eval (this=this@entry=0x721b228, secondaryScope=<optimized out>, isUndefined=0x0) at qml/qdeclarativeexpression.cpp:518
#9  0x00007fe17084f8fe in QDeclarativeQtScriptExpression::scriptValue (this=this@entry=0x721b228, secondaryScope=secondaryScope@entry=0x26bfbe0, isUndefined=isUndefined@entry=0x0) at qml/qdeclarativeexpression.cpp:470
#10 0x00007fe17084fbfa in QDeclarativeExpressionPrivate::scriptValue (this=this@entry=0x721b1a0, secondaryScope=secondaryScope@entry=0x26bfbe0, isUndefined=0x0) at qml/qdeclarativeexpression.cpp:653
#11 0x00007fe17084fd21 in QDeclarativeExpressionPrivate::value (this=0x721b1a0, secondaryScope=0x26bfbe0, isUndefined=isUndefined@entry=0x0) at qml/qdeclarativeexpression.cpp:667
#12 0x00007fe1708872f5 in QDeclarativeBoundSignal::qt_metacall (this=0x8099440, c=<optimized out>, id=<optimized out>, a=0x7ffc1d7f3e70) at qml/qdeclarativeboundsignal.cpp:199
#13 0x00007fe16ebfda78 in QMetaObject::activate (sender=sender@entry=0x2602b70, m=m@entry=0x7fe13dd06b20 <MouseEventListener::staticMetaObject>, local_signal_index=local_signal_index@entry=1, argv=argv@entry=0x7ffc1d7f3e70) at kernel/qobject.cpp:3569
#14 0x00007fe13dafd5f7 in positionChanged (_t1=0x7ffc1d7f3e80, this=0x2602b70) at ./mouseeventlistener.moc:374
#15 MouseEventListener::mouseMoveEvent (this=0x2602b70, me=<optimized out>) at ../../../../plasma/declarativeimports/qtextracomponents/mouseeventlistener.cpp:121
#16 0x00007fe16e52c6d6 in QGraphicsItem::sceneEvent (this=this@entry=0x2602b80, event=event@entry=0x7ffc1d7f4320) at graphicsview/qgraphicsitem.cpp:6749
#17 0x00007fe1707e47c4 in QDeclarativeItem::sceneEvent (this=0x2602b70, event=0x7ffc1d7f4320) at graphicsitems/qdeclarativeitem.cpp:3081
#18 0x00007fe16e5535af in QGraphicsScenePrivate::sendMouseEvent (this=0x1dfa580, mouseEvent=0x7ffc1d7f4320) at graphicsview/qgraphicsscene.cpp:1295
#19 0x00007fe16e55c176 in QGraphicsScene::mouseMoveEvent (this=<optimized out>, mouseEvent=0x7ffc1d7f4320) at graphicsview/qgraphicsscene.cpp:4102
#20 0x00007fe16e56805c in QGraphicsScene::event (this=0x1dfb010, event=0x7ffc1d7f4320) at graphicsview/qgraphicsscene.cpp:3451
#21 0x00007fe16df82e2c in QApplicationPrivate::notify_helper (this=this@entry=0x1d9a490, receiver=receiver@entry=0x1dfb010, e=e@entry=0x7ffc1d7f4320) at kernel/qapplication.cpp:4567
#22 0x00007fe16df894a0 in QApplication::notify (this=this@entry=0x1d88150, receiver=receiver@entry=0x1dfb010, e=e@entry=0x7ffc1d7f4320) at kernel/qapplication.cpp:4353
#23 0x00007fe16f8aecca in KApplication::notify (this=0x1d88150, receiver=0x1dfb010, event=0x7ffc1d7f4320) at ../../kdeui/kernel/kapplication.cpp:311
#24 0x00007fe16ebe94dd in QCoreApplication::notifyInternal (this=0x1d88150, receiver=0x1dfb010, event=event@entry=0x7ffc1d7f4320) at kernel/qcoreapplication.cpp:953
#25 0x00007fe16df81556 in sendSpontaneousEvent (event=event@entry=0x7ffc1d7f4320, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#26 qt_sendSpontaneousEvent (receiver=<optimized out>, event=event@entry=0x7ffc1d7f4320) at kernel/qapplication.cpp:5565
#27 0x00007fe16e57d25c in QGraphicsViewPrivate::mouseMoveEventHandler (this=this@entry=0x2224a20, event=event@entry=0x7ffc1d7f4970) at graphicsview/qgraphicsview.cpp:646
#28 0x00007fe16e57e16a in QGraphicsView::mouseMoveEvent (this=0x3922bf0, event=0x7ffc1d7f4970) at graphicsview/qgraphicsview.cpp:3276
#29 0x00007fe16dfd2635 in QWidget::event (this=this@entry=0x3922bf0, event=event@entry=0x7ffc1d7f4970) at kernel/qwidget.cpp:8361
#30 0x00007fe16e373fce in QFrame::event (this=0x3922bf0, e=0x7ffc1d7f4970) at widgets/qframe.cpp:557
#31 0x00007fe16e57f7b9 in QGraphicsView::viewportEvent (this=0x3922bf0, event=0x7ffc1d7f4970) at graphicsview/qgraphicsview.cpp:2866
#32 0x00007fe16ebe9646 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0x1d9a490, receiver=receiver@entry=0x23703a0, event=event@entry=0x7ffc1d7f4970) at kernel/qcoreapplication.cpp:1063
#33 0x00007fe16df82e0c in QApplicationPrivate::notify_helper (this=this@entry=0x1d9a490, receiver=receiver@entry=0x23703a0, e=e@entry=0x7ffc1d7f4970) at kernel/qapplication.cpp:4563
#34 0x00007fe16df895dd in QApplication::notify (this=this@entry=0x1d88150, receiver=receiver@entry=0x23703a0, e=e@entry=0x7ffc1d7f4970) at kernel/qapplication.cpp:4110
#35 0x00007fe16f8aecca in KApplication::notify (this=0x1d88150, receiver=0x23703a0, event=0x7ffc1d7f4970) at ../../kdeui/kernel/kapplication.cpp:311
#36 0x00007fe16ebe94dd in QCoreApplication::notifyInternal (this=0x1d88150, receiver=receiver@entry=0x23703a0, event=event@entry=0x7ffc1d7f4970) at kernel/qcoreapplication.cpp:953
#37 0x00007fe16df88d93 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#38 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x23703a0, event=event@entry=0x7ffc1d7f4970, alienWidget=alienWidget@entry=0x23703a0, nativeWidget=nativeWidget@entry=0x3922bf0, buttonDown=buttonDown@entry=0x7fe16ea68318 <qt_button_down>, lastMouseReceiver=..., spontaneous=spontaneous@entry=true) at kernel/qapplication.cpp:3178
#39 0x00007fe16dffd9cb in QETWidget::translateMouseEvent (this=this@entry=0x3922bf0, event=event@entry=0x7ffc1d7f4cf0) at kernel/qapplication_x11.cpp:4634
#40 0x00007fe16dffd269 in QApplication::x11ProcessEvent (this=0x1d88150, event=event@entry=0x7ffc1d7f4cf0) at kernel/qapplication_x11.cpp:3627
#41 0x00007fe16e024b02 in x11EventSourceDispatch (s=0x1d9ec00, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#42 0x00007fe165865e04 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#43 0x00007fe165866048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#44 0x00007fe1658660ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#45 0x00007fe16ec167a1 in QEventDispatcherGlib::processEvents (this=0x1d2a990, flags=...) at kernel/qeventdispatcher_glib.cpp:434
#46 0x00007fe16e024bb6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#47 0x00007fe16ebe80af in QEventLoop::processEvents (this=this@entry=0x7ffc1d7f50c0, flags=...) at kernel/qeventloop.cpp:149
#48 0x00007fe16ebe83a5 in QEventLoop::exec (this=this@entry=0x7ffc1d7f50c0, flags=...) at kernel/qeventloop.cpp:204
#49 0x00007fe16ebedb79 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225
#50 0x00007fe16df8137c in QApplication::exec () at kernel/qapplication.cpp:3828
#51 0x00007fe17234967c in kdemain (argc=1, argv=0x7ffc1d7f5318) at ../../../../plasma/desktop/shell/main.cpp:126
#52 0x00007fe171f69ec5 in __libc_start_main (main=0x4006e0 <main(int, char**)>, argc=1, argv=0x7ffc1d7f5318, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc1d7f5308) at libc-start.c:287
#53 0x000000000040070e in _start ()

Reported using DrKonqi