Application: ksmserver (ksmserver), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f0602579940 (LWP 1513))]

Thread 2 (Thread 0x7f05eb20b700 (LWP 1533)):
#0  0x00007f060204e56d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f05f68709f6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f05f6870b0c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f05fd7cb6fb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f05fd77507a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f05fd5970d3 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f06026cc6d5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f05fd59bd88 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f05f857a464 in start_thread (arg=0x7f05eb20b700) at pthread_create.c:333
#9  0x00007f06020579df in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 1 (Thread 0x7f0602579940 (LWP 1513)):
[KCrash Handler]
#6  __GI___libc_free (mem=0x8) at malloc.c:2963
#7  0x00007f05fc249771 in XIQueryDevice () from /usr/lib/x86_64-linux-gnu/libXi.so.6
#8  0x00007f05ee118366 in QXcbConnection::handleEnterEvent() () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#9  0x00007f05ee104d18 in QXcbWindow::handleEnterNotifyEvent(int, int, int, int, unsigned char, unsigned char, unsigned int) () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#10 0x00007f05ee10528f in QXcbWindow::handleXIEnterLeave(xcb_ge_event_t*) () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#11 0x00007f05ee11d3bc in QXcbConnection::xi2HandleEvent(xcb_ge_event_t*) () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#12 0x00007f05ee0efaca in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#13 0x00007f05ee0f0015 in QXcbConnection::processXcbEvents() () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#14 0x00007f05fd7a3b39 in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f05fe05eb2c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007f05fe0662e1 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007f05fd777090 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f05fd77981d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f05fd7cb2d3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f05f68707f7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f05f6870a60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f05f6870b0c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f05fd7cb6df in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007f05fd77507a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f05fd77d7ec in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007f060231f591 in kdemain () from /usr/lib/x86_64-linux-gnu/libkdeinit5_ksmserver.so
#27 0x00007f0601f8f2b1 in __libc_start_main (main=0x4006c0 <main>, argc=1, argv=0x7ffcd6e177e8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffcd6e177d8) at ../csu/libc-start.c:291
#28 0x00000000004006fa in _start ()