Bug 391231

Application: kwin_x11 (5.12.2)

Qt Version: 5.9.1
Frameworks Version: 5.43.0
Operating System: Linux 4.13.0-36-generic x86_64
Distribution: Ubuntu 17.10

-- Information about the crash:
I have logged in and KDE flickered me three times and then window openned in which I was able to choose other window manager: metacity, openmanager and kwin_x11. I have chosen first and then second and still there are no frames around windows.

The crash can be reproduced every time.

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f5f31d55980 (LWP 10711))]

Thread 6 (Thread 0x7f5eff5ef700 (LWP 10787)):
#0  0x00007f5f2a776072 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f5f2dcfffb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f5f2a776072 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f5f2dcfff68, cond=0x7f5f2dcfff90) at pthread_cond_wait.c:502
#2  0x00007f5f2a776072 in __pthread_cond_wait (cond=0x7f5f2dcfff90, mutex=0x7f5f2dcfff68) at pthread_cond_wait.c:655
#3  0x00007f5f2da0bbd4 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#4  0x00007f5f2da0bc19 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#5  0x00007f5f2a76f7fc in start_thread (arg=0x7f5eff5ef700) at pthread_create.c:465
#6  0x00007f5f316efb5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f5f0d949700 (LWP 10778)):
#0  0x00007f5f316e3a4b in __GI_ppoll (fds=0x7f5f04000d18, nfds=1, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x00007f5f2eaf9151 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f5f2eafa86e in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f5f2eaa2e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5f2e8c23ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5f29271f45 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#6  0x00007f5f2e8c729d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f5f2a76f7fc in start_thread (arg=0x7f5f0d949700) at pthread_create.c:465
#8  0x00007f5f316efb5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f5f0e6e1700 (LWP 10755)):
#0  0x00007f5f2a77664b in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f5f0e6e0ad0, expected=0, futex_word=0x55fcb946d6b4) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f5f2a77664b in __pthread_cond_wait_common (abstime=0x7f5f0e6e0b90, mutex=0x55fcb946d660, cond=0x55fcb946d688) at pthread_cond_wait.c:533
#2  0x00007f5f2a77664b in __pthread_cond_timedwait (cond=0x55fcb946d688, mutex=0x55fcb946d660, abstime=0x7f5f0e6e0b90) at pthread_cond_wait.c:667
#3  0x00007f5f2e8c8588 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5f2e8c37cc in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5f2e8c729d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f5f2a76f7fc in start_thread (arg=0x7f5f0e6e1700) at pthread_create.c:465
#7  0x00007f5f316efb5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f5f0f95c700 (LWP 10749)):
#0  0x00007f5f316e3a4b in __GI_ppoll (fds=0x7f5f0800b028, nfds=1, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x00007f5f2eaf9151 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f5f2eafa86e in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f5f2eaa2e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5f2e8c23ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5f28152e45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#6  0x00007f5f2e8c729d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f5f2a76f7fc in start_thread (arg=0x7f5f0f95c700) at pthread_create.c:465
#8  0x00007f5f316efb5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f5f15eba700 (LWP 10728)):
#0  0x00007f5f316e3951 in __GI___poll (fds=0x7f5f15eb9b38, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f5f305fb747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f5f305fd53a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f5f16962f09 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f5f2e8c729d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5f2a76f7fc in start_thread (arg=0x7f5f15eba700) at pthread_create.c:465
#6  0x00007f5f316efb5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f5f31d55980 (LWP 10711)):
[KCrash Handler]
#6  0x00007f5f312b1294 in  () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#7  0x00007f5f2d192895 in KDecoration2::DecoratedClient::color(KDecoration2::ColorGroup, KDecoration2::ColorRole) const () at /usr/lib/x86_64-linux-gnu/libkdecorations2.so.5
#8  0x00007f5f0dba7eae in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kdecoration2/breezedecoration.so
#9  0x00007f5f312bc62d in KWin::Decoration::Renderer::renderToImage(QRect const&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#10 0x00007f5f0ef38d8f in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kwin.platforms/KWinX11Platform.so
#11 0x00007f5f2ead39ff in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f5f2eae03b7 in QTimer::timeout(QTimer::QPrivateSignal) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f5f2eae0718 in QTimer::timerEvent(QTimerEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f5f2ead440b in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f5f2f81f46c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007f5f2f826d34 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007f5f2eaa4de8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f5f2eafc91e in QTimerInfoList::activateTimers() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f5f2eafaad2 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f5f169c59ad in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#21 0x00007f5f2eaa2e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007f5f2eaabda4 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007f5f319c3dbb in kdemain () at /usr/lib/x86_64-linux-gnu/libkdeinit5_kwin_x11.so
#24 0x00007f5f315fc1c1 in __libc_start_main (main=0x55fcb8cb9730, argc=1, argv=0x7ffe4a6d1c48, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe4a6d1c38) at ../csu/libc-start.c:308
#25 0x000055fcb8cb976a in _start ()

Reported using DrKonqi