https://bugs.kde.org/show_bug.cgi?id=477325
Bug ID: 477325
Summary: KWin Crash in KWin::OutputInterface::handle() after
closing and opening laptop lid
Classification: Plasma
Product: kwin
Version: master
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: kwin-bugs-n...@kde.org
Reporter: bharadwaj.raju...@protonmail.com
Target Milestone: ---
BACKTRACE
#0 0x00007fd52e41bd7c in QWeakPointer<QObject>::internalData() const
(this=0xc9) at /usr/include/qt6/QtCore/qsharedpointer_impl.h:704
#1 0x00007fd52e6a1cdc in QPointer<KWin::Output>::data() const (this=0xc9) at
/usr/include/qt6/QtCore/qpointer.h:64
#2 0x00007fd52e6a14f4 in QPointer<KWin::Output>::operator KWin::Output*()
const (this=0xc9) at /usr/include/qt6/QtCore/qpointer.h:72
#3 0x00007fd52ea4b3b4 in KWin::OutputInterface::handle() const
(this=0x37249f0) at /home/bharadwaj/kde/src/kwin/src/wayland/output.cpp:265
#4 0x00007fd52eac8d12 in
KWin::SurfaceInterface::takePresentationFeedback(KWin::Output*)
(this=0x40b8b10, output=0x263db00)
at /home/bharadwaj/kde/src/kwin/src/wayland/surface.cpp:474
#5 0x00007fd52e6da384 in operator()(KWin::SurfaceInterface*) const
(__closure=0x29b4ed0, surface=0x40b8b10)
at /home/bharadwaj/kde/src/kwin/src/scene/workspacescene.cpp:206
#6 0x00007fd52e6dcd60 in std::__invoke_impl<void,
KWin::WorkspaceScene::frame(KWin::SceneDelegate*,
KWin::OutputFrame*)::<lambda(KWin::SurfaceInterface*)>&,
KWin::SurfaceInterface*>(std::__invoke_other, struct {...} &) (__f=...) at
/usr/include/c++/13/bits/invoke.h:61
#7 0x00007fd52e6dc8db in std::__invoke_r<void,
KWin::WorkspaceScene::frame(KWin::SceneDelegate*,
KWin::OutputFrame*)::<lambda(KWin::SurfaceInterface*)>&,
KWin::SurfaceInterface*>(struct {...} &) (__fn=...) at
/usr/include/c++/13/bits/invoke.h:111
#8 0x00007fd52e6dc5c3 in std::_Function_handler<void(KWin::SurfaceInterface*),
KWin::WorkspaceScene::frame(KWin::SceneDelegate*,
KWin::OutputFrame*)::<lambda(KWin::SurfaceInterface*)> >::_M_invoke(const
std::_Any_data &, KWin::SurfaceInterface *&&) (__functor=...,
__args#0=@0x7ffd763b51f0: 0x40b8b10)
at /usr/include/c++/13/bits/std_function.h:290
#9 0x00007fd52ead2f93 in std::function<void
(KWin::SurfaceInterface*)>::operator()(KWin::SurfaceInterface*) const
(this=0x7ffd763b5330, __args#0=0x40b8b10)
at /usr/include/c++/13/bits/std_function.h:591
#10 0x00007fd52eacd707 in
KWin::SurfaceInterface::traverseTree(std::function<void
(KWin::SurfaceInterface*)>) (this=0x40b8b10, callback=...)
at /home/bharadwaj/kde/src/kwin/src/wayland/surface.cpp:1244
#11 0x00007fd52e6da613 in KWin::WorkspaceScene::frame(KWin::SceneDelegate*,
KWin::OutputFrame*) (this=0x257f930, delegate=0x42b4110, frame=0x3db89c0)
at /home/bharadwaj/kde/src/kwin/src/scene/workspacescene.cpp:204
#12 0x00007fd52e6c0e6b in KWin::SceneDelegate::frame(KWin::OutputFrame*)
(this=0x42b4110, frame=0x3db89c0) at
/home/bharadwaj/kde/src/kwin/src/scene/scene.cpp:49
#13 0x00007fd52e3cd064 in KWin::Compositor::framePass(KWin::RenderLayer*,
KWin::OutputFrame*) (this=0x251d0a0, layer=0x263e380, frame=0x3db89c0)
at /home/bharadwaj/kde/src/kwin/src/compositor.cpp:215
#14 0x00007fd52e3ccf19 in KWin::Compositor::composite(KWin::RenderLoop*)
(this=0x251d0a0, renderLoop=0x25ea010) at
/home/bharadwaj/kde/src/kwin/src/compositor.cpp:197
#15 0x00007fd52e3cc7fe in
KWin::Compositor::handleFrameRequested(KWin::RenderLoop*) (this=0x251d0a0,
renderLoop=0x25ea010)
at /home/bharadwaj/kde/src/kwin/src/compositor.cpp:129
#16 0x00007fd52e3d4351 in QtPrivate::FunctorCall<QtPrivate::IndexesList<0>,
QtPrivate::List<KWin::RenderLoop*>, void, void
(KWin::Compositor::*)(KWin::RenderLoop*)>::call(void
(KWin::Compositor::*)(KWin::RenderLoop*), KWin::Compositor*, void**)
(f=(void (KWin::Compositor::*)(KWin::Compositor * const, KWin::RenderLoop
*)) 0x7fd52e3cc7ce <KWin::Compositor::handleFrameRequested(KWin::RenderLoop*)>,
o=0x251d0a0, arg=0x7ffd763b5970) at
/usr/include/qt6/QtCore/qobjectdefs_impl.h:145
#17 0x00007fd52e3d37b6 in QtPrivate::FunctionPointer<void
(KWin::Compositor::*)(KWin::RenderLoop*)>::call<QtPrivate::List<KWin::RenderLoop*>,
void>(void (KWin::Compositor::*)(KWin::RenderLoop*), KWin::Compositor*, void**)
(f=(void (KWin::Compositor::*)(KWin::Compositor * const, KWin::RenderLoop
*)) 0x7fd52e3cc7ce <KWin::Compositor::handleFrameRequested(KWin::RenderLoop*)>,
o=0x251d0a0, arg=0x7ffd763b5970) at
/usr/include/qt6/QtCore/qobjectdefs_impl.h:182
--Type <RET> for more, q to quit, c to continue without paging--
#18 0x00007fd52e3d244f in QtPrivate::QCallableObject<void
(KWin::Compositor::*)(KWin::RenderLoop*), QtPrivate::List<KWin::RenderLoop*>,
void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*)
(which=1, this_=0x3659bf0, r=0x251d0a0, a=0x7ffd763b5970, ret=0x0) at
/usr/include/qt6/QtCore/qobjectdefs_impl.h:520
#19 0x00007fd52aa02051 in void doActivate<false>(QObject*, int, void**) () at
/lib64/libQt6Core.so.6
#20 0x00007fd52e41efa3 in KWin::RenderLoop::frameRequested(KWin::RenderLoop*)
(this=0x25ea010, _t1=0x25ea010)
at
/home/bharadwaj/kde/build/kwin/src/kwin_autogen/include/moc_renderloop.cpp:279
#21 0x00007fd52e41e56b in KWin::RenderLoopPrivate::dispatch() (this=0x275a1d0)
at /home/bharadwaj/kde/src/kwin/src/core/renderloop.cpp:135
#22 0x00007fd52e41df0b in operator()() const (__closure=0x2613a10) at
/home/bharadwaj/kde/src/kwin/src/core/renderloop.cpp:34
#23 0x00007fd52e41f284 in QtPrivate::FunctorCall<QtPrivate::IndexesList<>,
QtPrivate::List<>, void,
KWin::RenderLoopPrivate::RenderLoopPrivate(KWin::RenderLoop*)::<lambda()>
>::call(struct {...} &, void **) (f=..., arg=0x7ffd763b5b70) at
/usr/include/qt6/QtCore/qobjectdefs_impl.h:137
#24 0x00007fd52e41f265 in
QtPrivate::Functor<KWin::RenderLoopPrivate::RenderLoopPrivate(KWin::RenderLoop*)::<lambda()>,
0>::call<QtPrivate::List<>, void>(struct {...} &, void *, void **) (f=...,
arg=0x7ffd763b5b70) at /usr/include/qt6/QtCore/qobjectdefs_impl.h:339
#25 0x00007fd52e41f21c in
QtPrivate::QCallableObject<KWin::RenderLoopPrivate::RenderLoopPrivate(KWin::RenderLoop*)::<lambda()>,
QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase *, QObject *,
void **, bool *) (which=1, this_=0x2613a00, r=0x25ea010, a=0x7ffd763b5b70,
ret=0x0)
at /usr/include/qt6/QtCore/qobjectdefs_impl.h:522
#26 0x00007fd52aa02051 in void doActivate<false>(QObject*, int, void**) () at
/lib64/libQt6Core.so.6
#27 0x00007fd52aa111cd in QTimer::timeout(QTimer::QPrivateSignal) () at
/lib64/libQt6Core.so.6
#28 0x00007fd52a9f35cf in QObject::event(QEvent*) () at /lib64/libQt6Core.so.6
#29 0x00007fd52bdc2b38 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /lib64/libQt6Widgets.so.6
#30 0x00007fd52a9a0be8 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at /lib64/libQt6Core.so.6
#31 0x00007fd52ab22b4b in QTimerInfoList::activateTimers() () at
/lib64/libQt6Core.so.6
#32 0x00007fd52ab1facd in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /lib64/libQt6Core.so.6
#33 0x00007fd52b73fa82 in
QUnixEventDispatcherQPA::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
() at /lib64/libQt6Gui.so.6
#34 0x00007fd52a9ad9fb in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/lib64/libQt6Core.so.6
#35 0x00007fd52a9a97fd in QCoreApplication::exec() () at /lib64/libQt6Core.so.6
#36 0x00000000004a0374 in main(int, char**) (argc=14, argv=0x7ffd763b7b18) at
/home/bharadwaj/kde/src/kwin/src/main_wayland.cpp:606
STEPS TO REPRODUCE
1. Close, wait, then open laptop lid
SOFTWARE/OS VERSIONS
Operating System: Fedora Linux 39
KDE Plasma Version: 5.81.0
KDE Frameworks Version: 5.245.0
Qt Version: 6.6.0
Kernel Version: 6.5.11-300.fc39.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 12 × AMD Ryzen 5 5625U with Radeon Graphics
Memory: 7.1 GiB of RAM
Graphics Processor: AMD Radeon Graphics
ADDITIONAL INFORMATION
In KWin::SurfaceInterface::takePresentationFeedback, neither output nor
d->primaryOutput are nullptrs, yet memory accesses on them are invalid.
Possibly we're deleting them somewhere but not setting them to nullptr?
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