Application: plasma-desktop (4.11.11)
KDE Platform Version: 4.13.3 (Compiled from sources)
Qt Version: 4.8.6
Operating System: Linux 3.16.0-77-generic x86_64
Distribution: Ubuntu 14.04.5 LTS

-- Information about the crash:

I was running several applications; like Firefox 55.0.2 x64, Calculator 3.10.30, gedit 3.10.4, and I was trying to open the Quake 3 arena app.

The Application opened keeps working but reduced from full screen to a windowed screen and the tab that said the a crashed has occurred to the plasma-desktop.

My system have Kubuntu 14.0.4  with all security updates. Physically I have 4GB of RAM and the video adapter is integrated on a Intel processor.

The crash does not seem to be reproducible.

-- 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 0x7f8a590257c0 (LWP 2175))]

Thread 5 (Thread 0x7f8a2ee81700 (LWP 2177)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f8a51cc6ffb in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f8a51cc7039 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f8a4c572184 in start_thread (arg=0x7f8a2ee81700) at pthread_create.c:312
#4  0x00007f8a58912ffd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 4 (Thread 0x7f89a8f8b700 (LWP 2181)):
#0  0x00007f8a4bea261a in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f8a4bea2979 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8a4be60a6c in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8a4be60f7b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f8a4be610ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f8a554dc7be in QEventDispatcherGlib::processEvents (this=0x7f89a40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#6  0x00007f8a554ae0af in QEventLoop::processEvents (this=this@entry=0x7f89a8f8ade0, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f8a554ae3a5 in QEventLoop::exec (this=this@entry=0x7f89a8f8ade0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007f8a553aac5f in QThread::exec (this=this@entry=0xaaf3e0) at thread/qthread.cpp:537
#9  0x00007f8a5548f823 in QInotifyFileSystemWatcherEngine::run (this=0xaaf3e0) at io/qfilesystemwatcher_inotify.cpp:265
#10 0x00007f8a553ad32f in QThreadPrivate::start (arg=0xaaf3e0) at thread/qthread_unix.cpp:349
#11 0x00007f8a4c572184 in start_thread (arg=0x7f89a8f8b700) at pthread_create.c:312
#12 0x00007f8a58912ffd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 3 (Thread 0x7f89a25c2700 (LWP 2182)):
#0  0x00007f8a4be5e42e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f8a4be6062b in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8a4be60f03 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8a4be610ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f8a554dc7be in QEventDispatcherGlib::processEvents (this=0x7f899c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#5  0x00007f8a554ae0af in QEventLoop::processEvents (this=this@entry=0x7f89a25c1de0, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007f8a554ae3a5 in QEventLoop::exec (this=this@entry=0x7f89a25c1de0, flags=...) at kernel/qeventloop.cpp:204
#7  0x00007f8a553aac5f in QThread::exec (this=this@entry=0x14e26c0) at thread/qthread.cpp:537
#8  0x00007f8a5548f823 in QInotifyFileSystemWatcherEngine::run (this=0x14e26c0) at io/qfilesystemwatcher_inotify.cpp:265
#9  0x00007f8a553ad32f in QThreadPrivate::start (arg=0x14e26c0) at thread/qthread_unix.cpp:349
#10 0x00007f8a4c572184 in start_thread (arg=0x7f89a25c2700) at pthread_create.c:312
#11 0x00007f8a58912ffd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7f899956c700 (LWP 2183)):
#0  0x00007f8a4bea261a in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f8a4bea2979 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8a4be6092e in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8a4be60f7b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f8a4be610ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f8a554dc7be in QEventDispatcherGlib::processEvents (this=0x7f89940008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#6  0x00007f8a554ae0af in QEventLoop::processEvents (this=this@entry=0x7f899956bde0, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f8a554ae3a5 in QEventLoop::exec (this=this@entry=0x7f899956bde0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007f8a553aac5f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:537
#9  0x00007f89a136f027 in KCupsConnection::run() () from /usr/lib/libkcupslib.so
#10 0x00007f8a553ad32f in QThreadPrivate::start (arg=0x145a720) at thread/qthread_unix.cpp:349
#11 0x00007f8a4c572184 in start_thread (arg=0x7f899956c700) at pthread_create.c:312
#12 0x00007f8a58912ffd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7f8a590257c0 (LWP 2175)):
[KCrash Handler]
#6  QDragManager::move (this=0xbcf9e0, globalPos=...) at kernel/qdnd_x11.cpp:1648
#7  0x00007f8a548d2db9 in QDragManager::eventFilter (this=0xbcf9e0, o=<optimized out>, e=<optimized out>) at kernel/qdnd_x11.cpp:1308
#8  0x00007f8a5484f8c4 in QApplication::notify (this=this@entry=0x9dc4c0, receiver=receiver@entry=0x9847a0, e=e@entry=0x7ffff6f17360) at kernel/qapplication.cpp:4104
#9  0x00007f8a5617363a in KApplication::notify (this=0x9dc4c0, receiver=0x9847a0, event=0x7ffff6f17360) at ../../kdeui/kernel/kapplication.cpp:311
#10 0x00007f8a554af4dd in QCoreApplication::notifyInternal (this=0x9dc4c0, receiver=receiver@entry=0x9847a0, event=event@entry=0x7ffff6f17360) at kernel/qcoreapplication.cpp:953
#11 0x00007f8a5484ed93 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#12 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x9847a0, event=event@entry=0x7ffff6f17360, alienWidget=alienWidget@entry=0x0, nativeWidget=nativeWidget@entry=0x9847a0, buttonDown=buttonDown@entry=0x7f8a5532e318 <qt_button_down>, lastMouseReceiver=..., spontaneous=spontaneous@entry=true) at kernel/qapplication.cpp:3178
#13 0x00007f8a548c39eb in QETWidget::translateMouseEvent (this=this@entry=0x9847a0, event=event@entry=0x7ffff6f176e0) at kernel/qapplication_x11.cpp:4634
#14 0x00007f8a548c3289 in QApplication::x11ProcessEvent (this=0x9dc4c0, event=event@entry=0x7ffff6f176e0) at kernel/qapplication_x11.cpp:3627
#15 0x00007f8a548eab32 in x11EventSourceDispatch (s=0x9f4120, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#16 0x00007f8a4be60e04 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#17 0x00007f8a4be61048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007f8a4be610ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007f8a554dc7a1 in QEventDispatcherGlib::processEvents (this=0x9e0660, flags=...) at kernel/qeventdispatcher_glib.cpp:434
#20 0x00007f8a548eabe6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#21 0x00007f8a554ae0af in QEventLoop::processEvents (this=this@entry=0x2cb7a20, flags=...) at kernel/qeventloop.cpp:149
#22 0x00007f8a554ae3a5 in QEventLoop::exec (this=this@entry=0x2cb7a20, flags=...) at kernel/qeventloop.cpp:204
#23 0x00007f8a548d30bd in QDragManager::drag (this=0xbcf9e0, o=o@entry=0x2cff180) at kernel/qdnd_x11.cpp:2032
#24 0x00007f8a54859e3a in QDrag::exec (this=this@entry=0x2cff180, supportedActions=..., defaultDropAction=defaultDropAction@entry=Qt::IgnoreAction) at kernel/qdrag.cpp:284
#25 0x00007f8a54859ef3 in QDrag::exec (this=this@entry=0x2cff180, supportedActions=...) at kernel/qdrag.cpp:239
#26 0x00007f8a309519da in Kickoff::FlipScrollView::startDrag (this=this@entry=0x1353b60, supportedActions=...) at ../../../../../plasma/desktop/applets/kickoff/ui/flipscrollview.cpp:568
#27 0x00007f8a54d48b99 in QAbstractItemView::mouseMoveEvent (this=this@entry=0x1353b60, event=event@entry=0x7ffff6f18430) at itemviews/qabstractitemview.cpp:1725
#28 0x00007f8a309515be in Kickoff::FlipScrollView::mouseMoveEvent (this=0x1353b60, event=0x7ffff6f18430) at ../../../../../plasma/desktop/applets/kickoff/ui/flipscrollview.cpp:401
#29 0x00007f8a54898645 in QWidget::event (this=this@entry=0x1353b60, event=event@entry=0x7ffff6f18430) at kernel/qwidget.cpp:8361
#30 0x00007f8a54c3a04e in QFrame::event (this=0x1353b60, e=0x7ffff6f18430) at widgets/qframe.cpp:557
#31 0x00007f8a54d49633 in QAbstractItemView::viewportEvent (this=0x1353b60, event=0x7ffff6f18430) at itemviews/qabstractitemview.cpp:1644
#32 0x00007f8a554af646 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0x9f3b10, receiver=receiver@entry=0x1353540, event=event@entry=0x7ffff6f18430) at kernel/qcoreapplication.cpp:1063
#33 0x00007f8a54848e0c in QApplicationPrivate::notify_helper (this=this@entry=0x9f3b10, receiver=receiver@entry=0x1353540, e=e@entry=0x7ffff6f18430) at kernel/qapplication.cpp:4563
#34 0x00007f8a5484f5dd in QApplication::notify (this=this@entry=0x9dc4c0, receiver=receiver@entry=0x1353540, e=e@entry=0x7ffff6f18430) at kernel/qapplication.cpp:4110
#35 0x00007f8a5617363a in KApplication::notify (this=0x9dc4c0, receiver=0x1353540, event=0x7ffff6f18430) at ../../kdeui/kernel/kapplication.cpp:311
#36 0x00007f8a554af4dd in QCoreApplication::notifyInternal (this=0x9dc4c0, receiver=receiver@entry=0x1353540, event=event@entry=0x7ffff6f18430) at kernel/qcoreapplication.cpp:953
#37 0x00007f8a5484ed93 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#38 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x1353540, event=event@entry=0x7ffff6f18430, alienWidget=alienWidget@entry=0x1353540, nativeWidget=nativeWidget@entry=0x147d4b0, buttonDown=buttonDown@entry=0x7f8a5532e318 <qt_button_down>, lastMouseReceiver=..., spontaneous=spontaneous@entry=true) at kernel/qapplication.cpp:3178
#39 0x00007f8a5484f1d5 in QApplicationPrivate::sendSyntheticEnterLeave (this=<optimized out>, widget=widget@entry=0x1353540) at kernel/qapplication.cpp:3262
#40 0x00007f8a5489448b in QWidgetPrivate::hideChildren (this=<optimized out>, spontaneous=spontaneous@entry=false) at kernel/qwidget.cpp:7913
#41 0x00007f8a5489444a in QWidgetPrivate::hideChildren (this=<optimized out>, spontaneous=spontaneous@entry=false) at kernel/qwidget.cpp:7899
#42 0x00007f8a5489444a in QWidgetPrivate::hideChildren (this=<optimized out>, spontaneous=spontaneous@entry=false) at kernel/qwidget.cpp:7899
#43 0x00007f8a5489444a in QWidgetPrivate::hideChildren (this=<optimized out>, spontaneous=spontaneous@entry=false) at kernel/qwidget.cpp:7899
#44 0x00007f8a5489444a in QWidgetPrivate::hideChildren (this=this@entry=0x14fb7e0, spontaneous=spontaneous@entry=false) at kernel/qwidget.cpp:7899
#45 0x00007f8a54894647 in QWidgetPrivate::hide_helper (this=this@entry=0x14fb7e0) at kernel/qwidget.cpp:7643
#46 0x00007f8a548978a8 in QWidget::setVisible (this=0x147d4b0, visible=<optimized out>) at kernel/qwidget.cpp:7815
#47 0x00007f8a554c387a in QMetaObject::activate (sender=sender@entry=0xe03900, m=m@entry=0x7f8a30b68f20 <Kickoff::Launcher::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3539
#48 0x00007f8a309595c1 in aboutToHide (this=0xe03900) at ./launcher.moc:123
#49 Kickoff::Launcher::eventFilter (this=0xe03900, object=0x1353540, event=0x7ffff6f18d10) at ../../../../../plasma/desktop/applets/kickoff/ui/launcher.cpp:913
#50 0x00007f8a554af646 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0x9f3b10, receiver=receiver@entry=0x1353540, event=event@entry=0x7ffff6f18d10) at kernel/qcoreapplication.cpp:1063
#51 0x00007f8a54848e0c in QApplicationPrivate::notify_helper (this=this@entry=0x9f3b10, receiver=receiver@entry=0x1353540, e=e@entry=0x7ffff6f18d10) at kernel/qapplication.cpp:4563
#52 0x00007f8a5484f5dd in QApplication::notify (this=this@entry=0x9dc4c0, receiver=receiver@entry=0x1353540, e=e@entry=0x7ffff6f18d10) at kernel/qapplication.cpp:4110
#53 0x00007f8a5617363a in KApplication::notify (this=0x9dc4c0, receiver=0x1353540, event=0x7ffff6f18d10) at ../../kdeui/kernel/kapplication.cpp:311
#54 0x00007f8a554af4dd in QCoreApplication::notifyInternal (this=0x9dc4c0, receiver=receiver@entry=0x1353540, event=event@entry=0x7ffff6f18d10) at kernel/qcoreapplication.cpp:953
#55 0x00007f8a5484ed93 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#56 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x1353540, event=event@entry=0x7ffff6f18d10, alienWidget=alienWidget@entry=0x1353540, nativeWidget=nativeWidget@entry=0x147d4b0, buttonDown=buttonDown@entry=0x7f8a5532e318 <qt_button_down>, lastMouseReceiver=..., spontaneous=spontaneous@entry=true) at kernel/qapplication.cpp:3178
#57 0x00007f8a548c39eb in QETWidget::translateMouseEvent (this=this@entry=0x147d4b0, event=event@entry=0x7ffff6f19090) at kernel/qapplication_x11.cpp:4634
#58 0x00007f8a548c3289 in QApplication::x11ProcessEvent (this=0x9dc4c0, event=event@entry=0x7ffff6f19090) at kernel/qapplication_x11.cpp:3627
#59 0x00007f8a548eab32 in x11EventSourceDispatch (s=0x9f4120, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#60 0x00007f8a4be60e04 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#61 0x00007f8a4be61048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#62 0x00007f8a4be610ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#63 0x00007f8a554dc7a1 in QEventDispatcherGlib::processEvents (this=0x9e0660, flags=...) at kernel/qeventdispatcher_glib.cpp:434
#64 0x00007f8a548eabe6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#65 0x00007f8a554ae0af in QEventLoop::processEvents (this=this@entry=0x7ffff6f19460, flags=...) at kernel/qeventloop.cpp:149
#66 0x00007f8a554ae3a5 in QEventLoop::exec (this=this@entry=0x7ffff6f19460, flags=...) at kernel/qeventloop.cpp:204
#67 0x00007f8a554b3b79 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225
#68 0x00007f8a5484737c in QApplication::exec () at kernel/qapplication.cpp:3828
#69 0x00007f8a58c1a67c in kdemain (argc=1, argv=0x7ffff6f196b8) at ../../../../plasma/desktop/shell/main.cpp:126
#70 0x00007f8a58836f45 in __libc_start_main (main=0x4006e0 <main(int, char**)>, argc=1, argv=0x7ffff6f196b8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffff6f196a8) at libc-start.c:287
#71 0x000000000040070e in _start ()

Possible duplicates by query: bug 192270, bug 181010, bug 159443.

Report to https://bugs.kde.org/