Application: plasma-desktop (4.11.11)
KDE Platform Version: 4.14.2 (Compiled from sources)
Qt Version: 4.8.6
Operating System: Linux 3.16.0-38-generic x86_64
Distribution: Linux Mint 17.2 Rafaela

-- Information about the crash:
- What I was doing when the application crashed:System crashed when replacing a panel.

- Unusual behavior I noticed:Both display monitors froze for a second then the system 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 0x7ff7cfada7c0 (LWP 2310))]

Thread 5 (Thread 0x7ff7a5dbf700 (LWP 2311)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ff7c878affb in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007ff7c878b039 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007ff7c3301182 in start_thread (arg=0x7ff7a5dbf700) at pthread_create.c:312
#4  0x00007ff7cf3cc47d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 4 (Thread 0x7ff720262700 (LWP 2312)):
#0  0x00007ff7cbfa09cb in timerSourceCheckHelper (src=0x7ff7180030d0) at kernel/qeventdispatcher_glib.cpp:152
#1  0x00007ff7c2befa61 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff7c2beff7b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff7c2bf00ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ff7cbfa07be in QEventDispatcherGlib::processEvents (this=0x7ff7180008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#5  0x00007ff7cbf720af in QEventLoop::processEvents (this=this@entry=0x7ff720261de0, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007ff7cbf723a5 in QEventLoop::exec (this=this@entry=0x7ff720261de0, flags=...) at kernel/qeventloop.cpp:204
#7  0x00007ff7cbe6ec5f in QThread::exec (this=this@entry=0x120bd40) at thread/qthread.cpp:537
#8  0x00007ff7cbf53823 in QInotifyFileSystemWatcherEngine::run (this=0x120bd40) at io/qfilesystemwatcher_inotify.cpp:265
#9  0x00007ff7cbe7132f in QThreadPrivate::start (arg=0x120bd40) at thread/qthread_unix.cpp:349
#10 0x00007ff7c3301182 in start_thread (arg=0x7ff720262700) at pthread_create.c:312
#11 0x00007ff7cf3cc47d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 3 (Thread 0x7ff71e064700 (LWP 2314)):
#0  0x00007ff7cf3bf12d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007ff7c2beffe4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff7c2bf030a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff71eb60336 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007ff7c2c14f05 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ff7c3301182 in start_thread (arg=0x7ff71e064700) at pthread_create.c:312
#6  0x00007ff7cf3cc47d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7ff71d1eb700 (LWP 2315)):
#0  0x00007ff7c2c31627 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007ff7c2c319a9 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff7c2bef680 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff7c2beff03 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ff7c2bf00ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ff7cbfa07be in QEventDispatcherGlib::processEvents (this=0x7ff7080008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#6  0x00007ff7cbf720af in QEventLoop::processEvents (this=this@entry=0x7ff71d1eade0, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007ff7cbf723a5 in QEventLoop::exec (this=this@entry=0x7ff71d1eade0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007ff7cbe6ec5f in QThread::exec (this=this@entry=0x134f6e0) at thread/qthread.cpp:537
#9  0x00007ff7cbf53823 in QInotifyFileSystemWatcherEngine::run (this=0x134f6e0) at io/qfilesystemwatcher_inotify.cpp:265
#10 0x00007ff7cbe7132f in QThreadPrivate::start (arg=0x134f6e0) at thread/qthread_unix.cpp:349
#11 0x00007ff7c3301182 in start_thread (arg=0x7ff71d1eb700) at pthread_create.c:312
#12 0x00007ff7cf3cc47d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7ff7cfada7c0 (LWP 2310)):
[KCrash Handler]
#6  0x0000000004ed6d50 in ?? ()
#7  0x00007ff7cbf88994 in QObject::connect (sender=sender@entry=0x2fd2f50, signal=signal@entry=0x7ff7a7c98569 "2destroyed()", receiver=receiver@entry=0x5131fe0, method=method@entry=0x7ff7a7c98558 "1widgetDeleted()", type=type@entry=Qt::AutoConnection) at kernel/qobject.cpp:2546
#8  0x00007ff7a7c8069f in SystemTray::Task::widget (this=this@entry=0x5131fe0, host=host@entry=0x4975480, createIfNecessary=createIfNecessary@entry=true) at ../../../../../plasma/generic/applets/systemtray/core/task.cpp:80
#9  0x00007ff7a7c94010 in SystemTray::Applet::_onAddedTask (this=this@entry=0x4975480, task=0x5131fe0) at ../../../../../plasma/generic/applets/systemtray/ui/applet.cpp:196
#10 0x00007ff7a7c943cb in SystemTray::Applet::_onWidgetCreationFinished (this=0x4975480) at ../../../../../plasma/generic/applets/systemtray/ui/applet.cpp:278
#11 0x00007ff7a7c946a5 in SystemTray::Applet::qt_static_metacall (_o=0x2fd2f50, _id=-1479965335, _a=0x7ffd9ce15880, _c=<optimized out>) at ./applet.moc:143
#12 0x00007ff7cbf8787a in QMetaObject::activate (sender=0x27b3cf0, m=m@entry=0x7ff7cf2c4040 <Plasma::DeclarativeWidget::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3539
#13 0x00007ff7cef8c7d0 in Plasma::DeclarativeWidget::finished (this=<optimized out>) at ./declarativewidget.moc:156
#14 0x00007ff7cef8cf2f in Plasma::DeclarativeWidgetPrivate::finishExecute (this=0x642e340) at ../../plasma/widgets/declarativewidget.cpp:216
#15 0x00007ff7cbf8bc1e in QObject::event (this=this@entry=0x27b3cf0, e=e@entry=0x4a4aeb0) at kernel/qobject.cpp:1194
#16 0x00007ff7cb90c4fb in QGraphicsWidget::event (this=0x27b3cf0, event=0x4a4aeb0) at graphicsview/qgraphicswidget.cpp:1461
#17 0x00007ff7cb30ce2c in QApplicationPrivate::notify_helper (this=this@entry=0x797550, receiver=receiver@entry=0x27b3cf0, e=e@entry=0x4a4aeb0) at kernel/qapplication.cpp:4567
#18 0x00007ff7cb3134a0 in QApplication::notify (this=this@entry=0x791960, receiver=receiver@entry=0x27b3cf0, e=e@entry=0x4a4aeb0) at kernel/qapplication.cpp:4353
#19 0x00007ff7ccc38cca in KApplication::notify (this=0x791960, receiver=0x27b3cf0, event=0x4a4aeb0) at ../../kdeui/kernel/kapplication.cpp:311
#20 0x00007ff7cbf734dd in QCoreApplication::notifyInternal (this=0x791960, receiver=receiver@entry=0x27b3cf0, event=event@entry=0x4a4aeb0) at kernel/qcoreapplication.cpp:953
#21 0x00007ff7cbf76b3d in sendEvent (event=0x4a4aeb0, receiver=0x27b3cf0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#22 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x71d090) at kernel/qcoreapplication.cpp:1577
#23 0x00007ff7cbf76fe3 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1470
#24 0x00007ff7cbfa0f83 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#25 postEventSourceDispatch (s=0x797360) at kernel/qeventdispatcher_glib.cpp:287
#26 0x00007ff7c2befe04 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007ff7c2bf0048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x00007ff7c2bf00ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#29 0x00007ff7cbfa07a1 in QEventDispatcherGlib::processEvents (this=0x71e990, flags=...) at kernel/qeventdispatcher_glib.cpp:434
#30 0x00007ff7cb3aebe6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#31 0x00007ff7cbf720af in QEventLoop::processEvents (this=this@entry=0x7ffd9ce15fe0, flags=...) at kernel/qeventloop.cpp:149
#32 0x00007ff7cbf723a5 in QEventLoop::exec (this=this@entry=0x7ffd9ce15fe0, flags=...) at kernel/qeventloop.cpp:204
#33 0x00007ff7cbf77b79 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225
#34 0x00007ff7cb30b37c in QApplication::exec () at kernel/qapplication.cpp:3828
#35 0x00007ff7cf6d367c in kdemain (argc=1, argv=0x7ffd9ce16238) at ../../../../plasma/desktop/shell/main.cpp:126
#36 0x00007ff7cf2f3ec5 in __libc_start_main (main=0x4006e0 <main(int, char**)>, argc=1, argv=0x7ffd9ce16238, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd9ce16228) at libc-start.c:287
#37 0x000000000040070e in _start ()

Reported using DrKonqi