Application: konsole (15.12.1)

Qt Version: 5.5.1
Operating System: Linux 4.3.3-4-default x86_64
Distribution: "openSUSE Tumbleweed (20160117) (x86_64)"

-- Information about the crash:
- What I was doing when the application crashed: I was moving the mouse pointer across the screen when it crossed a Konsole window.  I run focus follows mouse. All the konsole sessions were destroyed.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Konsole (konsole), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f4582528940 (LWP 9306))]

Thread 2 (Thread 0x7f456bd6a700 (LWP 9307)):
#0  0x00007f4579172cfc in __lll_lock_wait () at /lib64/libpthread.so.0
#1  0x00007f457916cb35 in pthread_mutex_lock () at /lib64/libpthread.so.0
#2  0x00007f457959663c in  () at /usr/lib64/libxcb.so.1
#3  0x00007f4579598007 in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#4  0x00007f456e0f5e29 in QXcbEventReader::run() (this=0xb2d370) at qxcbconnection.cpp:1229
#5  0x00007f457e24494f in QThreadPrivate::start(void*) (arg=0xb2d370) at thread/qthread_unix.cpp:331
#6  0x00007f457916a4a4 in start_thread () at /lib64/libpthread.so.0
#7  0x00007f4581e74bdd in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f4582528940 (LWP 9306)):
[KCrash Handler]
#6  0x00007f45795974c8 in  () at /usr/lib64/libxcb.so.1
#7  0x00007f4579597d6c in  () at /usr/lib64/libxcb.so.1
#8  0x00007f4579597ec1 in xcb_wait_for_reply64 () at /usr/lib64/libxcb.so.1
#9  0x00007f457af8f300 in _XReply () at /usr/lib64/libX11.so.6
#10 0x00007f456dcad29f in XIQueryDevice () at /usr/lib64/libXi.so.6
#11 0x00007f456e11be5e in QXcbConnection::handleEnterEvent(xcb_enter_notify_event_t const*) (this=0xae9070) at qxcbconnection_xi2.cpp:830
#12 0x00007f456e10d21f in QXcbWindow::handleEnterNotifyEvent(xcb_enter_notify_event_t const*) (this=0x1325760, event=0x7f4564003430) at qxcbwindow.cpp:2347
#13 0x00007f456e0f9f05 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) (this=this@entry=0xae9070, event=event@entry=0x7f4564003430) at qxcbconnection.cpp:1069
#14 0x00007f456e0fa58b in QXcbConnection::processXcbEvents() (this=0xae9070) at qxcbconnection.cpp:1504
#15 0x00007f457e443d79 in QObject::event(QEvent*) (this=0xae9070, e=<optimized out>) at kernel/qobject.cpp:1239
#16 0x00007f457f0fc8cc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#17 0x00007f457f1019d6 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#18 0x00007f457e415cf3 in QCoreApplication::notifyInternal(QObject*, QEvent*) (this=0x7ffe3db4f350, receiver=0xae9070, event=event@entry=0x7f4564003580) at kernel/qcoreapplication.cpp:965
#19 0x00007f457e418016 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) (event=0x7f4564003580, receiver=<optimized out>) at kernel/qcoreapplication.h:224
#20 0x00007f457e418016 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0xacff70) at kernel/qcoreapplication.cpp:1593
#21 0x00007f457e4184f8 in QCoreApplication::sendPostedEvents(QObject*, int) (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1451
#22 0x00007f457e469103 in postEventSourceDispatch(GSource*, GSourceFunc, gpointer) (s=0xb5a420) at kernel/qeventdispatcher_glib.cpp:271
#23 0x00007f4578a2f0c7 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#24 0x00007f4578a2f2f8 in  () at /usr/lib64/libglib-2.0.so.0
#25 0x00007f4578a2f39c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#26 0x00007f457e46950f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0xb6cec0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#27 0x00007f457e41363a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ffe3db4f230, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#28 0x00007f457e41b2fd in QCoreApplication::exec() () at kernel/qcoreapplication.cpp:1229
#29 0x00007f458215b70f in kdemain () at /usr/lib64/libkdeinit5_konsole.so
#30 0x00007f4581dab610 in __libc_start_main () at /lib64/libc.so.6
#31 0x00000000004007f9 in _start ()

Reported using DrKonqi