Bug 400127

Application: kwin_x11 (5.14.1)

Qt Version: 5.11.2
Frameworks Version: 5.51.0
Operating System: Linux 4.15.0-36-generic x86_64
Distribution: KDE neon User Edition 5.14

-- Information about the crash:
- What I was doing when the application crashed:
Change desktop. I was clicking on the widget I added to my dashboard.

- Unusual behavior I noticed:

Problem when I switch too quickly desktop.

-- Backtrace:
Application: KWin (kwin_x11), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fcdc08a6840 (LWP 2168))]

Thread 5 (Thread 0x7fcd915ea700 (LWP 2358)):
#0  0x00007fcdb92619f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7fcdbc801fb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fcdb92619f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7fcdbc801f68, cond=0x7fcdbc801f90) at pthread_cond_wait.c:502
#2  0x00007fcdb92619f3 in __pthread_cond_wait (cond=0x7fcdbc801f90, mutex=0x7fcdbc801f68) at pthread_cond_wait.c:655
#3  0x00007fcdbc50c954 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#4  0x00007fcdbc50c999 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#5  0x00007fcdb925b6db in start_thread (arg=0x7fcd915ea700) at pthread_create.c:463
#6  0x00007fcdc022388f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fcd9e2c0700 (LWP 2329)):
#0  0x00007fcdc0216cf6 in __GI_ppoll (fds=fds@entry=0x7fcd8c000d28, nfds=nfds@entry=1, timeout=<optimized out>, timeout@entry=0x0, sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x00007fcdbd81e241 in ppoll (__ss=<optimized out>, __timeout=<optimized out>, __nfds=<optimized out>, __fds=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/poll2.h:77
#2  0x00007fcdbd81e241 in qt_ppoll (timeout_ts=0x0, nfds=1, fds=0x7fcd8c000d28) at kernel/qcore_unix.cpp:132
#3  0x00007fcdbd81e241 in qt_safe_poll(pollfd*, unsigned long, timespec const*) (fds=0x7fcd8c000d28, nfds=1, timeout_ts=timeout_ts@entry=0x0) at kernel/qcore_unix.cpp:153
#4  0x00007fcdbd81f94e in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=<optimized out>, flags=...) at kernel/qeventdispatcher_unix.cpp:500
#5  0x00007fcdbd7c67fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fcd9e2bfd40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#6  0x00007fcdbd5f1bba in QThread::exec() (this=this@entry=0x560f3a6826b0) at thread/qthread.cpp:525
#7  0x00007fcdb7ce74f5 in QQmlThreadPrivate::run() (this=0x560f3a6826b0) at qml/ftw/qqmlthread.cpp:148
#8  0x00007fcdbd5fcadb in QThreadPrivate::start(void*) (arg=0x560f3a6826b0) at thread/qthread_unix.cpp:367
#9  0x00007fcdb925b6db in start_thread (arg=0x7fcd9e2c0700) at pthread_create.c:463
#10 0x00007fcdc022388f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fcda4eeb700 (LWP 2193)):
#0  0x00007fcdc0216cf6 in __GI_ppoll (fds=fds@entry=0x7fcd9800b6e8, nfds=nfds@entry=1, timeout=<optimized out>, timeout@entry=0x0, sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x00007fcdbd81e241 in ppoll (__ss=<optimized out>, __timeout=<optimized out>, __nfds=<optimized out>, __fds=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/poll2.h:77
#2  0x00007fcdbd81e241 in qt_ppoll (timeout_ts=0x0, nfds=1, fds=0x7fcd9800b6e8) at kernel/qcore_unix.cpp:132
#3  0x00007fcdbd81e241 in qt_safe_poll(pollfd*, unsigned long, timespec const*) (fds=0x7fcd9800b6e8, nfds=1, timeout_ts=timeout_ts@entry=0x0) at kernel/qcore_unix.cpp:153
#4  0x00007fcdbd81f94e in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=<optimized out>, flags=...) at kernel/qeventdispatcher_unix.cpp:500
#5  0x00007fcdbd7c67fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fcda4eead30, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#6  0x00007fcdbd5f1bba in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:525
#7  0x00007fcdb6bd7e45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#8  0x00007fcdbd5fcadb in QThreadPrivate::start(void*) (arg=0x7fcdb6e4fd60) at thread/qthread_unix.cpp:367
#9  0x00007fcdb925b6db in start_thread (arg=0x7fcda4eeb700) at pthread_create.c:463
#10 0x00007fcdc022388f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fcda798a700 (LWP 2173)):
#0  0x00007fcdc0216bf9 in __GI___poll (fds=0x7fcda7989c68, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fcdbd330747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fcdbd33236a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fcda8a7ced9 in QXcbEventReader::run() (this=0x560f3a471250) at qxcbconnection.cpp:1391
#4  0x00007fcdbd5fcadb in QThreadPrivate::start(void*) (arg=0x560f3a471250) at thread/qthread_unix.cpp:367
#5  0x00007fcdb925b6db in start_thread (arg=0x7fcda798a700) at pthread_create.c:463
#6  0x00007fcdc022388f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fcdc08a6840 (LWP 2168)):
[KCrash Handler]
#6  0x00007fcdc0140e97 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#7  0x00007fcdc0142801 in __GI_abort () at abort.c:79
#8  0x00007fcdbd5cd5db in qt_message_fatal (context=..., message=<synthetic pointer>...) at global/qlogging.cpp:1842
#9  0x00007fcdbd5cd5db in QMessageLogger::fatal(char const*, ...) const (this=<optimized out>, msg=<optimized out>) at global/qlogging.cpp:880
#10 0x00007fcdbcd7a8dc in KWin::WindowQuad::makeSubQuad(double, double, double, double) const () at /usr/lib/x86_64-linux-gnu/libkwineffects.so.11
#11 0x00007fcd9ce6a455 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kwin.scenes/KWinSceneOpenGL.so
#12 0x00007fcd9ce6a6f6 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kwin.scenes/KWinSceneOpenGL.so
#13 0x00007fcd9ce73f13 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kwin.scenes/KWinSceneOpenGL.so
#14 0x00007fcd9ce74047 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kwin.scenes/KWinSceneOpenGL.so
#15 0x00007fcdbfd811d6 in KWin::EffectsHandlerImpl::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#16 0x00007fcdbcb17ac6 in  () at /usr/lib/x86_64-linux-gnu/libkwin4_effect_builtins.so.1
#17 0x00007fcdbfd8116e in KWin::EffectsHandlerImpl::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#18 0x00007fcdbca85c75 in  () at /usr/lib/x86_64-linux-gnu/libkwin4_effect_builtins.so.1
#19 0x00007fcdbfd8116e in KWin::EffectsHandlerImpl::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#20 0x00007fcdbcd76ff0 in KWin::Effect::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwineffects.so.11
#21 0x00007fcdbfd8116e in KWin::EffectsHandlerImpl::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#22 0x00007fcdbcd76ff0 in KWin::Effect::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwineffects.so.11
#23 0x00007fcdbfd8116e in KWin::EffectsHandlerImpl::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#24 0x00007fcdbcd76ff0 in KWin::Effect::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwineffects.so.11
#25 0x00007fcdbfd8116e in KWin::EffectsHandlerImpl::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#26 0x00007fcdbfd6e110 in KWin::Scene::finalPaintWindow(KWin::EffectWindowImpl*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#27 0x00007fcdbfd80ffd in KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#28 0x00007fcdbcd76e80 in KWin::Effect::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwineffects.so.11
#29 0x00007fcdbfd80f9e in KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#30 0x00007fcdbcd76e80 in KWin::Effect::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwineffects.so.11
#31 0x00007fcdbfd80f9e in KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#32 0x00007fcdbcb0638c in  () at /usr/lib/x86_64-linux-gnu/libkwin4_effect_builtins.so.1
#33 0x00007fcdbfd80f9e in KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#34 0x00007fcdbcab220c in  () at /usr/lib/x86_64-linux-gnu/libkwin4_effect_builtins.so.1
#35 0x00007fcdbfd80f9e in KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#36 0x00007fcdbcad9a54 in  () at /usr/lib/x86_64-linux-gnu/libkwin4_effect_builtins.so.1
#37 0x00007fcdbfd80f9e in KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#38 0x00007fcdbfd741e2 in KWin::Scene::paintWindow(KWin::Scene::Window*, int, QRegion, KWin::WindowQuadList) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#39 0x00007fcdbfd70e47 in KWin::Scene::paintGenericScreen(int, KWin::ScreenPaintData) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#40 0x00007fcd9ce73d22 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kwin.scenes/KWinSceneOpenGL.so
#41 0x00007fcdbfd737c0 in KWin::Scene::finalPaintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#42 0x00007fcdbfd80d55 in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#43 0x00007fcdbcd76dd1 in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwineffects.so.11
#44 0x00007fcdbfd80cfd in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#45 0x00007fcdbcd76dd1 in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwineffects.so.11
#46 0x00007fcdbfd80cfd in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#47 0x00007fcdbcd76dd1 in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwineffects.so.11
#48 0x00007fcdbfd80cfd in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#49 0x00007fcdbcd76dd1 in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwineffects.so.11
#50 0x00007fcdbfd80cfd in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#51 0x00007fcdbcada9ce in  () at /usr/lib/x86_64-linux-gnu/libkwin4_effect_builtins.so.1
#52 0x00007fcdbfd80cfd in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#53 0x00007fcdbfd7346e in KWin::Scene::paintScreen(int*, QRegion const&, QRegion const&, QRegion*, QRegion*, QMatrix4x4 const&, QRect const&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#54 0x00007fcd9ce6ddf1 in KWin::SceneOpenGL::paint(QRegion, QList<KWin::Toplevel*>) () at /usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kwin.scenes/KWinSceneOpenGL.so
#55 0x00007fcdbfd65b62 in KWin::Compositor::performCompositing() () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#56 0x00007fcdbd7f808b in QObject::event(QEvent*) (this=0x560f3a56c9a0, e=<optimized out>) at kernel/qobject.cpp:1273
#57 0x00007fcdbe556e1c in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=this@entry=0x560f3a45a7c0, receiver=receiver@entry=0x560f3a56c9a0, e=e@entry=0x7ffecbae5a00) at kernel/qapplication.cpp:3727
#58 0x00007fcdbe55e3ef in QApplication::notify(QObject*, QEvent*) (this=0x7ffecbae5cb0, receiver=0x560f3a56c9a0, e=0x7ffecbae5a00) at kernel/qapplication.cpp:3486
#59 0x00007fcdbd7c84d8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x560f3a56c9a0, event=event@entry=0x7ffecbae5a00) at kernel/qcoreapplication.cpp:1048
#60 0x00007fcdbd8219ae in QCoreApplication::sendEvent(QObject*, QEvent*) (event=0x7ffecbae5a00, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#61 0x00007fcdbd8219ae in QTimerInfoList::activateTimers() (this=this@entry=0x560f3a4fca50) at kernel/qtimerinfo_unix.cpp:643
#62 0x00007fcdbd81eddc in QEventDispatcherUNIXPrivate::activateTimers() (this=this@entry=0x560f3a4fc9b0) at kernel/qeventdispatcher_unix.cpp:249
#63 0x00007fcdbd81fbb2 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=<optimized out>, flags=...) at kernel/qeventdispatcher_unix.cpp:514
#64 0x00007fcda8b089fd in QUnixEventDispatcherQPA::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=<optimized out>, flags=...) at qunixeventdispatcher.cpp:68
#65 0x00007fcdbd7c67fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ffecbae5bc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#66 0x00007fcdbd7cf9c0 in QCoreApplication::exec() () at kernel/qcoreapplication.cpp:1336
#67 0x00007fcdc04fbdab in kdemain () at /usr/lib/x86_64-linux-gnu/libkdeinit5_kwin_x11.so
#68 0x00007fcdc0123b97 in __libc_start_main (main=0x560f384ff720, argc=1, argv=0x7ffecbae5e48, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffecbae5e38) at ../csu/libc-start.c:310
#69 0x0000560f384ff75a in _start ()

The reporter indicates this bug may be a duplicate of or related to bug 396297.

Possible duplicates by query: bug 396297, bug 395712, bug 392092.

Reported using DrKonqi