SUMMARY *** NOTE: If you are reporting a crash, please try to attach a backtrace with debug symbols. See https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports *** STEPS TO REPRODUCE 1. toggle overview in multimonitor setup 2. search for something that gives results 3. On one monitor, spam down arrow to quickly cycle through results 4. use left/right arrow to move to other monitor 5. spam down arrow again to quickly cycle through results OBSERVED RESULT kwin crashes EXPECTED RESULT kwin does not crash SOFTWARE/OS VERSIONS Operating System: KDE neon Unstable Edition KDE Plasma Version: 6.0.80 KDE Frameworks Version: 5.249.0 Qt Version: 6.6.1 Kernel Version: 6.5.0-15-generic (64-bit) Graphics Platform: Wayland Processors: 20 × 13th Gen Intel® Core™ i9-13900H Memory: 15.2 GiB of RAM Graphics Processor: Mesa Intel® Graphics Manufacturer: ASUSTeK COMPUTER INC. Product Name: ROG Zephyrus G16 GU603VV_GU603VV System Version: 1.0 ADDITIONAL INFORMATION
Created attachment 165504 [details] gdb backtrace
pasting inline #0 0x0000763f69284ce8 in QQuickWindowPrivate::deliveryAgentPrivate (this=0xb1) at /usr/src/debug/qt6-declarative/qtdeclarative-everywhere-src-6.7.0-beta2/src/quick/items/qquickwindow_p.h:118 #1 QQuickWindow::activeFocusItem (this=0x56c6d8762760) at /usr/src/debug/qt6-declarative/qtdeclarative-everywhere-src-6.7.0-beta2/src/quick/items/qquickwindow.cpp:1336 d = 0xb1 da = <optimized out> #2 0x0000763f69b40ea9 in operator()<std::pair<KWin::Output* const, std::unique_ptr<KWin::QuickSceneView> > > (__closure=<synthetic pointer>, view={...}) at /home/yifan/kde/src/kwin/src/effect/quickeffect.cpp:290 #3 __gnu_cxx::__ops::_Iter_pred<KWin::QuickSceneEffect::activeView() const::<lambda(const auto:61&)> >::operator()<std::_Rb_tree_iterator<std::pair<KWin::Output* const, std::unique_ptr<KWin::QuickSceneView> > > > (__it=Python Exception <class 'gdb.error'>: value has been optimized out , this=<synthetic pointer>) at /usr/include/c++/13.2.1/bits/predefined_ops.h:318 #4 std::__find_if<std::_Rb_tree_iterator<std::pair<KWin::Output* const, std::unique_ptr<KWin::QuickSceneView> > >, __gnu_cxx::__ops::_Iter_pred<KWin::QuickSceneEffect::activeView() const::<lambda(const auto:61&)> > > (__pred=..., __last=Python Exception <class 'gdb.error'>: value has been optimized out , __first={...}) at /usr/include/c++/13.2.1/bits/stl_algobase.h:2055 #5 std::__find_if<std::_Rb_tree_iterator<std::pair<KWin::Output* const, std::unique_ptr<KWin::QuickSceneView> > >, __gnu_cxx::__ops::_Iter_pred<KWin::QuickSceneEffect::activeView() const::<lambda(const auto:61&)> > > (__pred=..., __last=Python Exception <class 'gdb.error'>: value has been optimized out , __first=Python Exception <class 'gdb.error'>: value has been optimized out ) at /usr/include/c++/13.2.1/bits/stl_algobase.h:2117 #6 std::find_if<std::_Rb_tree_iterator<std::pair<KWin::Output* const, std::unique_ptr<KWin::QuickSceneView> > >, KWin::QuickSceneEffect::activeView() const::<lambda(const auto:61&)> > (__pred=..., __last=Python Exception <class 'gdb.error'>: value has been optimized out , __first=Python Exception <class 'gdb.error'>: value has been optimized out ) at /usr/include/c++/13.2.1/bits/stl_algo.h:3923 #7 KWin::QuickSceneEffect::activeView (this=this@entry=0x56c6d6fdd7c0) at /home/yifan/kde/src/kwin/src/effect/quickeffect.cpp:289 it = Python Exception <class 'gdb.error'>: value has been optimized out #8 0x0000763f69b4368f in KWin::QuickSceneEffect::grabbedKeyboardEvent (this=0x56c6d6fdd7c0, keyEvent=0x7ffee2306f10) at /home/yifan/kde/src/kwin/src/effect/quickeffect.cpp:561 screenView = <optimized out> #9 0x0000763f69b66d8c in KWin::EffectsFilter::keyEvent (event=0x7ffee2306f10, this=0x56c6d70f44d0) at /home/yifan/kde/src/kwin/src/input.cpp:532 #10 KWin::EffectsFilter::keyEvent (this=0x56c6d70f44d0, event=0x7ffee2306f10) at /home/yifan/kde/src/kwin/src/input.cpp:525 #11 0x0000763f69b7d4d7 in std::__invoke_impl<bool, bool (KWin::InputEventFilter::*&)(KWin::KeyEvent*), KWin::InputEventFilter* const&, KWin::KeyEvent*&> (__f=<optimized out>, __t=@0x56c6d70fc6f0: 0x56c6d70f44d0) at /usr/include/c++/13.2.1/bits/invoke.h:74 #12 std::__invoke<bool (KWin::InputEventFilter::*&)(KWin::KeyEvent*), KWin::InputEventFilter* const&, KWin::KeyEvent*&> (__fn=<optimized out>) at /usr/include/c++/13.2.1/bits/invoke.h:96 #13 std::_Bind<bool (KWin::InputEventFilter::*(std::_Placeholder<1>, KWin::KeyEvent*))(KWin::KeyEvent*)>::__call<bool, KWin::InputEventFilter* const&, 0ul, 1ul>(std::tuple<KWin::InputEventFilter* const&>&&, std::_Index_tuple<0ul, 1ul>) (__args=<optimized out>, this=<optimized out>) at /usr/include/c++/13.2.1/functional:506 #14 std::_Bind<bool (KWin::InputEventFilter::*(std::_Placeholder<1>, KWin::KeyEvent*))(KWin::KeyEvent*)>::operator()<KWin::InputEventFilter* const&, bool>(KWin::InputEventFilter* const&) (this=<optimized out>) at /usr/include/c++/13.2.1/functional:591 #15 __gnu_cxx::__ops::_Iter_pred<std::_Bind<bool (KWin::InputEventFilter::*(std::_Placeholder<1>, KWin::KeyEvent*))(KWin::KeyEvent*)> >::operator()<QList<KWin::InputEventFilter*>::const_iterator>(QList<KWin::InputEventFilter*>::const_iterator) (__it=..., this=<optimized out>) at /usr/include/c++/13.2.1/bits/predefined_ops.h:318 #16 std::__find_if<QList<KWin::InputEventFilter*>::const_iterator, __gnu_cxx::__ops::_Iter_pred<std::_Bind<bool (KWin::InputEventFilter::*(std::_Placeholder<1>, KWin::KeyEvent*))(KWin::KeyEvent*)> > >(QList<KWin::InputEventFilter*>::const_iterator, QList<KWin::InputEventFilter*>::const_iterator, __gnu_cxx::__ops::_Iter_pred<std::_Bind<bool (KWin::InputEventFilter::*(std::_Placeholder<1>, KWin::KeyEvent*))(KWin::KeyEvent*)> >, std::random_access_iterator_tag) (__pred=..., __last=..., __first=...) at /usr/include/c++/13.2.1/bits/stl_algobase.h:2072
Can reproduce.
A possibly relevant merge request was started @ https://invent.kde.org/plasma/kwin/-/merge_requests/5155
Git commit 95d4671a10904bf58e9ab23172766de450386640 by Vlad Zahorodnii, on behalf of David Edmundson. Committed on 09/02/2024 at 09:12. Pushed by davidedmundson into branch 'master'. quickeffect: Avoid double delete of QQuickViews Views are owned by the C++ backend, but also retrievable by invokables to get neighbouring screens from JS space. By default Qt then transfers ownership of the view to the QML collector. This results in double ownership. M +2 -0 src/effect/quickeffect.cpp https://invent.kde.org/plasma/kwin/-/commit/95d4671a10904bf58e9ab23172766de450386640
Git commit 8b73147fa96831b4f07b32f4550d4324db0c5be3 by David Edmundson. Committed on 09/02/2024 at 09:19. Pushed by davidedmundson into branch 'Plasma/6.0'. quickeffect: Avoid double delete of QQuickViews Views are owned by the C++ backend, but also retrievable by invokables to get neighbouring screens from JS space. By default Qt then transfers ownership of the view to the QML collector. This results in double ownership. (cherry picked from commit 95d4671a10904bf58e9ab23172766de450386640) M +2 -0 src/effect/quickeffect.cpp https://invent.kde.org/plasma/kwin/-/commit/8b73147fa96831b4f07b32f4550d4324db0c5be3