Bug 387289

Summary: KWin segmentation fault - 84 T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS) [Current thread is 1 (Thread 0x7feb848d05c0 (LWP 1611))]
Product: [Plasma] kwin Reporter: Germano Massullo (Thetra) <germano.massullo>
Component: generalAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED UNMAINTAINED    
Severity: crash    
Priority: NOR    
Version First Reported In: 5.11.1   
Target Milestone: ---   
Platform: Fedora RPMs   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Germano Massullo (Thetra) 2017-11-25 09:48:52 UTC 
Version is 5.10.5, not 5.11.1, I had to select that because there was no 5.10 value


Application: kwin_x11 (5.10.5)

Qt Version: 5.9.2
Frameworks Version: 5.38.0
Operating System: Linux 4.13.13-200.fc26.x86_64 x86_64
Distribution: "Fedora release 26 (Twenty Six)"

-- Information about the crash:
- What I was doing when the application crashed:
I logged into Plasma, when KWin crashed during Plasma loading

The crash can be reproduced sometimes.

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
84	T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
[Current thread is 1 (Thread 0x7feb848d05c0 (LWP 1611))]

Thread 12 (Thread 0x7feb5610a700 (LWP 1949)):
#0  0x00007feb957ad90b in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5631771330d8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007feb957ad90b in __pthread_cond_wait_common (abstime=0x0, mutex=0x563177133088, cond=0x5631771330b0) at pthread_cond_wait.c:502
#2  0x00007feb957ad90b in __pthread_cond_wait (cond=cond@entry=0x5631771330b0, mutex=mutex@entry=0x563177133088) at pthread_cond_wait.c:655
#3  0x00007feb61d7914b in cnd_wait (mtx=0x563177133088, cond=0x5631771330b0) at ../../include/c11/threads_posix.h:159
#4  0x00007feb61d7914b in util_queue_thread_func (input=input@entry=0x563176f451b0) at u_queue.c:171
#5  0x00007feb61d79067 in impl_thrd_routine (p=<optimized out>) at ../../include/c11/threads_posix.h:87
#6  0x00007feb957a736d in start_thread (arg=0x7feb5610a700) at pthread_create.c:456
#7  0x00007feb92988e1f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 11 (Thread 0x7feb5690b700 (LWP 1948)):
#0  0x00007feb957ad90b in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x563176d49ad0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007feb957ad90b in __pthread_cond_wait_common (abstime=0x0, mutex=0x563176d49a80, cond=0x563176d49aa8) at pthread_cond_wait.c:502
#2  0x00007feb957ad90b in __pthread_cond_wait (cond=cond@entry=0x563176d49aa8, mutex=mutex@entry=0x563176d49a80) at pthread_cond_wait.c:655
#3  0x00007feb61d7914b in cnd_wait (mtx=0x563176d49a80, cond=0x563176d49aa8) at ../../include/c11/threads_posix.h:159
#4  0x00007feb61d7914b in util_queue_thread_func (input=input@entry=0x563176ef7120) at u_queue.c:171
#5  0x00007feb61d79067 in impl_thrd_routine (p=<optimized out>) at ../../include/c11/threads_posix.h:87
#6  0x00007feb957a736d in start_thread (arg=0x7feb5690b700) at pthread_create.c:456
#7  0x00007feb92988e1f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 10 (Thread 0x7feb5710c700 (LWP 1947)):
#0  0x00007feb957ad90b in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x563176d49ad0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007feb957ad90b in __pthread_cond_wait_common (abstime=0x0, mutex=0x563176d49a80, cond=0x563176d49aa8) at pthread_cond_wait.c:502
#2  0x00007feb957ad90b in __pthread_cond_wait (cond=cond@entry=0x563176d49aa8, mutex=mutex@entry=0x563176d49a80) at pthread_cond_wait.c:655
#3  0x00007feb61d7914b in cnd_wait (mtx=0x563176d49a80, cond=0x563176d49aa8) at ../../include/c11/threads_posix.h:159
#4  0x00007feb61d7914b in util_queue_thread_func (input=input@entry=0x563176ef7120) at u_queue.c:171
#5  0x00007feb61d79067 in impl_thrd_routine (p=<optimized out>) at ../../include/c11/threads_posix.h:87
#6  0x00007feb957a736d in start_thread (arg=0x7feb5710c700) at pthread_create.c:456
#7  0x00007feb92988e1f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 9 (Thread 0x7feb5790d700 (LWP 1946)):
#0  0x00007feb957ad90b in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x563176d499ec) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007feb957ad90b in __pthread_cond_wait_common (abstime=0x0, mutex=0x563176d49998, cond=0x563176d499c0) at pthread_cond_wait.c:502
#2  0x00007feb957ad90b in __pthread_cond_wait (cond=cond@entry=0x563176d499c0, mutex=mutex@entry=0x563176d49998) at pthread_cond_wait.c:655
#3  0x00007feb61d7914b in cnd_wait (mtx=0x563176d49998, cond=0x563176d499c0) at ../../include/c11/threads_posix.h:159
#4  0x00007feb61d7914b in util_queue_thread_func (input=input@entry=0x563176e9cc40) at u_queue.c:171
#5  0x00007feb61d79067 in impl_thrd_routine (p=<optimized out>) at ../../include/c11/threads_posix.h:87
#6  0x00007feb957a736d in start_thread (arg=0x7feb5790d700) at pthread_create.c:456
#7  0x00007feb92988e1f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 8 (Thread 0x7feb5810e700 (LWP 1945)):
#0  0x00007feb957ad90b in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x563176d499ec) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007feb957ad90b in __pthread_cond_wait_common (abstime=0x0, mutex=0x563176d49998, cond=0x563176d499c0) at pthread_cond_wait.c:502
#2  0x00007feb957ad90b in __pthread_cond_wait (cond=cond@entry=0x563176d499c0, mutex=mutex@entry=0x563176d49998) at pthread_cond_wait.c:655
#3  0x00007feb61d7914b in cnd_wait (mtx=0x563176d49998, cond=0x563176d499c0) at ../../include/c11/threads_posix.h:159
#4  0x00007feb61d7914b in util_queue_thread_func (input=input@entry=0x563176e8d7f0) at u_queue.c:171
#5  0x00007feb61d79067 in impl_thrd_routine (p=<optimized out>) at ../../include/c11/threads_posix.h:87
#6  0x00007feb957a736d in start_thread (arg=0x7feb5810e700) at pthread_create.c:456
#7  0x00007feb92988e1f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 7 (Thread 0x7feb5890f700 (LWP 1944)):
#0  0x00007feb957ad90b in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x563176d499e8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007feb957ad90b in __pthread_cond_wait_common (abstime=0x0, mutex=0x563176d49998, cond=0x563176d499c0) at pthread_cond_wait.c:502
#2  0x00007feb957ad90b in __pthread_cond_wait (cond=cond@entry=0x563176d499c0, mutex=mutex@entry=0x563176d49998) at pthread_cond_wait.c:655
#3  0x00007feb61d7914b in cnd_wait (mtx=0x563176d49998, cond=0x563176d499c0) at ../../include/c11/threads_posix.h:159
#4  0x00007feb61d7914b in util_queue_thread_func (input=input@entry=0x563176eb7110) at u_queue.c:171
#5  0x00007feb61d79067 in impl_thrd_routine (p=<optimized out>) at ../../include/c11/threads_posix.h:87
#6  0x00007feb957a736d in start_thread (arg=0x7feb5890f700) at pthread_create.c:456
#7  0x00007feb92988e1f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 6 (Thread 0x7feb59110700 (LWP 1943)):
#0  0x00007feb957ad90b in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x563176f12280) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007feb957ad90b in __pthread_cond_wait_common (abstime=0x0, mutex=0x563176f12230, cond=0x563176f12258) at pthread_cond_wait.c:502
#2  0x00007feb957ad90b in __pthread_cond_wait (cond=cond@entry=0x563176f12258, mutex=mutex@entry=0x563176f12230) at pthread_cond_wait.c:655
#3  0x00007feb61d7914b in cnd_wait (mtx=0x563176f12230, cond=0x563176f12258) at ../../include/c11/threads_posix.h:159
#4  0x00007feb61d7914b in util_queue_thread_func (input=input@entry=0x563176e8d7f0) at u_queue.c:171
#5  0x00007feb61d79067 in impl_thrd_routine (p=<optimized out>) at ../../include/c11/threads_posix.h:87
#6  0x00007feb957a736d in start_thread (arg=0x7feb59110700) at pthread_create.c:456
#7  0x00007feb92988e1f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 5 (Thread 0x7feb60fa8700 (LWP 1942)):
#0  0x00007feb957ad90b in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x563176eee94c) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007feb957ad90b in __pthread_cond_wait_common (abstime=0x0, mutex=0x563176eee8f8, cond=0x563176eee920) at pthread_cond_wait.c:502
#2  0x00007feb957ad90b in __pthread_cond_wait (cond=cond@entry=0x563176eee920, mutex=mutex@entry=0x563176eee8f8) at pthread_cond_wait.c:655
#3  0x00007feb61d7914b in cnd_wait (mtx=0x563176eee8f8, cond=0x563176eee920) at ../../include/c11/threads_posix.h:159
#4  0x00007feb61d7914b in util_queue_thread_func (input=input@entry=0x563176e5cd30) at u_queue.c:171
#5  0x00007feb61d79067 in impl_thrd_routine (p=<optimized out>) at ../../include/c11/threads_posix.h:87
#6  0x00007feb957a736d in start_thread (arg=0x7feb60fa8700) at pthread_create.c:456
#7  0x00007feb92988e1f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 4 (Thread 0x7feb643e6700 (LWP 1941)):
[KCrash Handler]
#6  0x00007feb936f3680 in QString::size() const (this=0x563176edf490) at ../../src/corelib/tools/qstring.h:233
#7  0x00007feb936f3680 in QString::toLocal8Bit() const & (this=0x563176edf490) at ../../src/corelib/tools/qstring.h:520
#8  0x00007feb936f3680 in QFile::encodeName(QString const&) (fileName=...) at ../../src/corelib/io/qfile.h:89
#9  0x00007feb936f3680 in QLockFilePrivate::tryLock_sys() (this=this@entry=0x563176edf490) at io/qlockfile_unix.cpp:182
#10 0x00007feb9369b14c in QLockFile::tryLock(int) (this=<optimized out>, timeout=timeout@entry=-1) at io/qlockfile.cpp:220
#11 0x00007feb9369b41a in QLockFile::lock() (this=<optimized out>) at io/qlockfile.cpp:191
#12 0x00007feb950f4c09 in KConfigIniBackend::lock() (this=0x563176d583f0) at ../src/core/kconfigini.cpp:630
#13 0x00007feb950dea4e in KConfigPrivate::lockLocal() (this=0x563176d35e80) at ../src/core/kconfig.cpp:114
#14 0x00007feb950dea4e in KConfig::sync() (this=<optimized out>) at ../src/core/kconfig.cpp:433
#15 0x00007feb7693bb1b in KWin::X11StandalonePlatform::<lambda()>::operator() (__closure=<optimized out>) at /usr/src/debug/kwin-5.10.5/plugins/platforms/x11/standalone/x11_platform.cpp:230
#16 0x00007feb7693bb1b in QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, KWin::X11StandalonePlatform::createOpenGLSafePoint(KWin::Platform::OpenGLSafePoint)::<lambda()> >::call (f=..., arg=<optimized out>) at /usr/include/qt5/QtCore/qobjectdefs_impl.h:130
#17 0x00007feb7693bb1b in QtPrivate::Functor<KWin::X11StandalonePlatform::createOpenGLSafePoint(KWin::Platform::OpenGLSafePoint)::<lambda()>, 0>::call<QtPrivate::List<>, void> (f=..., arg=<optimized out>) at /usr/include/qt5/QtCore/qobjectdefs_impl.h:240
#18 0x00007feb7693bb1b in QtPrivate::QFunctorSlotObject<KWin::X11StandalonePlatform::createOpenGLSafePoint(KWin::Platform::OpenGLSafePoint)::<lambda()>, 0, QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase *, QObject *, void **, bool *) (which=<optimized out>, this_=<optimized out>, r=<optimized out>, a=<optimized out>, ret=<optimized out>) at /usr/include/qt5/QtCore/qobject_impl.h:168
#19 0x00007feb9377be27 in QtPrivate::QSlotObjectBase::call(QObject*, void**) (a=0x7feb643e5820, r=0x563176eb5e20, this=0x563176e97af0) at ../../src/corelib/kernel/qobject_impl.h:101
#20 0x00007feb9377be27 in QMetaObject::activate(QObject*, int, int, void**) (sender=sender@entry=0x563176eb5e20, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7feb643e5820) at kernel/qobject.cpp:3749
#21 0x00007feb9377c377 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) (sender=sender@entry=0x563176eb5e20, m=m@entry=0x7feb939a4560 <QTimer::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7feb643e5820) at kernel/qobject.cpp:3628
#22 0x00007feb937880d7 in QTimer::timeout(QTimer::QPrivateSignal) (this=this@entry=0x563176eb5e20, _t1=...) at .moc/moc_qtimer.cpp:201
#23 0x00007feb937883e8 in QTimer::timerEvent(QTimerEvent*) (this=0x563176eb5e20, e=<optimized out>) at kernel/qtimer.cpp:255
#24 0x00007feb9377ca0b in QObject::event(QEvent*) (this=0x563176eb5e20, e=<optimized out>) at kernel/qobject.cpp:1268
#25 0x00007feb93fccc9c in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=this@entry=0x563176ccc4f0, receiver=receiver@entry=0x563176eb5e20, e=e@entry=0x7feb643e5af0) at kernel/qapplication.cpp:3722
#26 0x00007feb93fd44e4 in QApplication::notify(QObject*, QEvent*) (this=0x7fff455d9590, receiver=0x563176eb5e20, e=0x7feb643e5af0) at kernel/qapplication.cpp:3481
#27 0x00007feb937534a7 in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x563176eb5e20, event=event@entry=0x7feb643e5af0) at kernel/qcoreapplication.cpp:1018
#28 0x00007feb937a37ab in QCoreApplication::sendEvent(QObject*, QEvent*) (event=0x7feb643e5af0, receiver=<optimized out>) at ../../src/corelib/kernel/qcoreapplication.h:233
#29 0x00007feb937a37ab in QTimerInfoList::activateTimers() (this=this@entry=0x7feb5c000980) at kernel/qtimerinfo_unix.cpp:643
#30 0x00007feb937a0b6c in QEventDispatcherUNIXPrivate::activateTimers() (this=this@entry=0x7feb5c0008e0) at kernel/qeventdispatcher_unix.cpp:249
#31 0x00007feb937a1b28 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=<optimized out>, flags=...) at kernel/qeventdispatcher_unix.cpp:514
#32 0x00007feb9375222a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7feb643e5c70, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#33 0x00007feb935a399a in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:515
#34 0x00007feb935a7c72 in QThreadPrivate::start(void*) (arg=0x563176eb9500) at thread/qthread_unix.cpp:368
#35 0x00007feb957a736d in start_thread (arg=0x7feb643e6700) at pthread_create.c:456
#36 0x00007feb92988e1f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 3 (Thread 0x7feb74d58700 (LWP 1850)):
#0  0x00007feb9297ce06 in __GI_ppoll (fds=fds@entry=0x7feb6c000ac8, nfds=nfds@entry=1, timeout=<optimized out>, timeout@entry=0x0, sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x00007feb937a0715 in ppoll (__ss=<optimized out>, __timeout=<optimized out>, __nfds=<optimized out>, __fds=<optimized out>) at /usr/include/bits/poll2.h:77
#2  0x00007feb937a0715 in qt_ppoll (timeout_ts=0x0, nfds=1, fds=0x7feb6c000ac8) at kernel/qcore_unix.cpp:81
#3  0x00007feb937a0715 in qt_safe_poll(pollfd*, unsigned long, timespec const*) (fds=0x7feb6c000ac8, nfds=nfds@entry=1, timeout_ts=timeout_ts@entry=0x0) at kernel/qcore_unix.cpp:102
#4  0x00007feb937a19bd in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=<optimized out>, flags=...) at kernel/qeventdispatcher_unix.cpp:500
#5  0x00007feb9375222a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7feb74d57c50, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#6  0x00007feb935a399a in QThread::exec() (this=this@entry=0x563176e6ce10) at thread/qthread.cpp:515
#7  0x00007feb9a103cf5 in QQmlThreadPrivate::run() (this=0x563176e6ce10) at qml/ftw/qqmlthread.cpp:147
#8  0x00007feb935a7c72 in QThreadPrivate::start(void*) (arg=0x563176e6ce10) at thread/qthread_unix.cpp:368
#9  0x00007feb957a736d in start_thread (arg=0x7feb74d58700) at pthread_create.c:456
#10 0x00007feb92988e1f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 2 (Thread 0x7feb7735e700 (LWP 1695)):
#0  0x00007feb9297ce06 in __GI_ppoll (fds=fds@entry=0x7feb7000ad68, nfds=nfds@entry=1, timeout=<optimized out>, timeout@entry=0x0, sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x00007feb937a0715 in ppoll (__ss=<optimized out>, __timeout=<optimized out>, __nfds=<optimized out>, __fds=<optimized out>) at /usr/include/bits/poll2.h:77
#2  0x00007feb937a0715 in qt_ppoll (timeout_ts=0x0, nfds=1, fds=0x7feb7000ad68) at kernel/qcore_unix.cpp:81
#3  0x00007feb937a0715 in qt_safe_poll(pollfd*, unsigned long, timespec const*) (fds=0x7feb7000ad68, nfds=nfds@entry=1, timeout_ts=timeout_ts@entry=0x0) at kernel/qcore_unix.cpp:102
#4  0x00007feb937a19bd in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=<optimized out>, flags=...) at kernel/qeventdispatcher_unix.cpp:500
#5  0x00007feb9375222a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7feb7735dc30, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#6  0x00007feb935a399a in QThread::exec() (this=this@entry=0x7feb97fbb060 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread.cpp:515
#7  0x00007feb97f45689 in QDBusConnectionManager::run() (this=0x7feb97fbb060 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:178
#8  0x00007feb935a7c72 in QThreadPrivate::start(void*) (arg=0x7feb97fbb060 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:368
#9  0x00007feb957a736d in start_thread (arg=0x7feb7735e700) at pthread_create.c:456
#10 0x00007feb92988e1f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 1 (Thread 0x7feb848d05c0 (LWP 1611)):
#0  0x00007feb9297cd2d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007feb94ea7c97 in poll (__timeout=-1, __nfds=1, __fds=0x7fff455d8600) at /usr/include/bits/poll2.h:46
#2  0x00007feb94ea7c97 in _xcb_conn_wait (c=c@entry=0x563176cf0720, cond=cond@entry=0x7fff455d8720, vector=vector@entry=0x0, count=count@entry=0x0) at xcb_conn.c:479
#3  0x00007feb94ea978f in wait_for_reply (c=c@entry=0x563176cf0720, request=1298, e=e@entry=0x0) at xcb_in.c:516
#4  0x00007feb94ea98a0 in xcb_wait_for_reply (c=0x563176cf0720, request=1298, e=e@entry=0x0) at xcb_in.c:546
#5  0x00007feb94eaf485 in xcb_get_property_reply (c=<optimized out>, cookie=..., e=e@entry=0x0) at xproto.c:3695
#6  0x00007feb94508dc0 in get_array_reply<unsigned int>(xcb_connection_t*, xcb_get_property_cookie_t, unsigned int) (c=<optimized out>, cookie=..., cookie@entry=..., type=type@entry=4) at /usr/src/debug/kwindowsystem-5.38.0/src/platforms/xcb/netwm.cpp:213
#7  0x00007feb945046c0 in NETWinInfo::update(QFlags<NET::Property>, QFlags<NET::Property2>) (this=0x563176e932e0, dirtyProperties=..., dirtyProperties@entry=..., dirtyProperties2=..., dirtyProperties2@entry=...) at /usr/src/debug/kwindowsystem-5.38.0/src/platforms/xcb/netwm.cpp:3999
#8  0x00007feb94507537 in NETWinInfo::event(xcb_generic_event_t*, QFlags<NET::Property>*, QFlags<NET::Property2>*) (this=<optimized out>, event=event@entry=0x7feb78004950, properties=properties@entry=0x7fff455d8dc0, properties2=properties2@entry=0x7fff455d8dc4) at /usr/src/debug/kwindowsystem-5.38.0/src/platforms/xcb/netwm.cpp:3798
#9  0x00007feb9b893181 in KWin::Client::windowEvent(xcb_generic_event_t*) (this=0x563176e92070, e=e@entry=0x7feb78004950) at /usr/src/debug/kwin-5.10.5/events.cpp:594
#10 0x00007feb9b89414e in KWin::Workspace::workspaceEvent(xcb_generic_event_t*) (this=0x563176daa4a0, e=0x7feb78004950) at /usr/src/debug/kwin-5.10.5/events.cpp:349
#11 0x00007feb93750d24 in QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) (this=<optimized out>, eventType=..., message=message@entry=0x7feb78004950, result=result@entry=0x7fff455d8f38) at kernel/qabstracteventdispatcher.cpp:467
#12 0x00007feb7dcf07f0 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) (this=this@entry=0x563176ceef50, event=event@entry=0x7feb78004950) at qxcbconnection.cpp:1091
#13 0x00007feb7dcf147c in QXcbConnection::processXcbEvents() (this=0x563176ceef50) at qxcbconnection.cpp:1731
#14 0x00007feb9377ca5a in QObject::event(QEvent*) (this=0x563176ceef50, e=<optimized out>) at kernel/qobject.cpp:1246
#15 0x00007feb93fccc9c in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=this@entry=0x563176ccc4f0, receiver=receiver@entry=0x563176ceef50, e=e@entry=0x7feb78001ae0) at kernel/qapplication.cpp:3722
#16 0x00007feb93fd44e4 in QApplication::notify(QObject*, QEvent*) (this=0x7fff455d9590, receiver=0x563176ceef50, e=0x7feb78001ae0) at kernel/qapplication.cpp:3481
#17 0x00007feb937534a7 in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x563176ceef50, event=event@entry=0x7feb78001ae0) at kernel/qcoreapplication.cpp:1018
#18 0x00007feb93755c2b in QCoreApplication::sendEvent(QObject*, QEvent*) (event=0x7feb78001ae0, receiver=<optimized out>) at kernel/qcoreapplication.h:233
#19 0x00007feb93755c2b in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) (receiver=0x0, event_type=0, data=0x563176cbba10) at kernel/qcoreapplication.cpp:1678
#20 0x00007feb937a183a in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x563176d34b00, flags=...) at kernel/qeventdispatcher_unix.cpp:466
#21 0x00007feb7dd5241d in QUnixEventDispatcherQPA::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=<optimized out>, flags=...) at qunixeventdispatcher.cpp:68
#22 0x00007feb9375222a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fff455d94a0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#23 0x00007feb9375a884 in QCoreApplication::exec() () at kernel/qcoreapplication.cpp:1291
#24 0x00007feb9bc97bf6 in kdemain(int, char**) (argc=<optimized out>, argv=0x7fff455d9728) at /usr/src/debug/kwin-5.10.5/main_x11.cpp:466
#25 0x00007feb9289888a in __libc_start_main (main=0x56317566ac30 <main>, argc=1, argv=0x7fff455d9728, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff455d9718) at ../csu/libc-start.c:295
#26 0x000056317566ac6a in _start ()

Segnala a https://bugs.kde.org/
Comment 1 Martin Flöser 2017-11-25 16:41:03 UTC 
5.10 is unmaintained. The crash is fixed in latest release.