https://bugs.kde.org/show_bug.cgi?id=453309
Bug ID: 453309
Summary: kwin_wayland crashed in
KWin::ScreenCastStream::enqueue() when simultaneously
activating Present Windows from a screen edge and
showing a Task Manager thumbnail
Product: kwin
Version: git master
Platform: Other
OS: Linux
Status: REPORTED
Severity: crash
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: n...@kde.org
Target Milestone: ---
kwin_wayl;and crashed when I activated Present Windows (with
https://invent.kde.org/plasma/kwin/-/merge_requests/2279 applied) from a screen
edge with the mouse, on the same edge that a panel was on. A Task Manager
thumbnail appeared at the moment the effect activated, and then kwin_wayland
crashed.
#0 __pthread_kill_implementation
(threadid=<optimized out>, signo=signo@entry=6, no_tid=no_tid@entry=0) at
pthread_kill.c:44
#1 0x00007f866aa50603 in __pthread_kill_internal (signo=6, threadid=<optimized
out>)
at pthread_kill.c:78
#2 0x00007f866aa03d86 in __GI_raise (sig=sig@entry=6) at
../sysdeps/posix/raise.c:26
#3 0x00007f866a9d6833 in __GI_abort () at abort.c:79
#4 0x00007f866cd22cba in egl_provider_resolver
(name=name@entry=0x7f866cd48ba4 <entrypoint_strings+1060>
"eglDestroySyncKHR", providers=providers@entry=0x7f866cd486e4
<providers.19.lto_priv>, entrypoints=entrypoints@entry=0x7f866cd486d8
<entrypoints.18.lto_priv>) at src/egl_generated_dispatch.c:3911
#5 0x00007f866cd2661a in epoxy_eglDestroySyncKHR_resolver () at
src/egl_generated_dispatch.c:4312
#6 epoxy_eglDestroySyncKHR_global_rewrite_ptr (dpy=0xfa4d10, sync=0x1cd4820)
at src/egl_generated_dispatch.c:5063
#7 0x000000000047024d in KWin::ScreenCastStream::enqueue() (this=0x2836750)
at /home/nate/kde/src/kwin/src/plugins/screencast/screencaststream.cpp:547
#8 0x00007f866c30a3e9 in QtPrivate::QSlotObjectBase::call(QObject*, void**)
(a=0x7ffe94778a80, r=<optimized out>, this=0x2586180)
at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#9 doActivate<false>(QObject*, int, void**)
(sender=0x292a4f0, signal_index=3, argv=0x7ffe94778a80) at
kernel/qobject.cpp:3886
#10 0x00007f866c305367 in QMetaObject::activate(QObject*, QMetaObject const*,
int, void**)
(sender=sender@entry=0x292a4f0, m=m@entry=0x7f866c5af460
<QSocketNotifier::staticMetaObject>,
local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffe94778a80)
at kernel/qobject.cpp:3946
#11 0x00007f866c30cb8a in QSocketNotifier::activated(QSocketDescriptor,
QSocketNotifier::Type, QSocketNotifier::QPrivateSignal)
(this=this@entry=0x292a4f0, _t1=..., _t2=<optimized out>, _t3=...)
at .moc/moc_qsocketnotifier.cpp:178
#12 0x00007f866c30d3a3 in QSocketNotifier::event(QEvent*) (this=0x292a4f0,
e=0x7ffe94778b80)
at kernel/qsocketnotifier.cpp:302
#13 0x00007f866b156443 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
(this=<optimized out>, receiver=0x292a4f0, e=0x7ffe94778b80) at
kernel/qapplication.cpp:3632
#14 0x00007f866c2d67d8 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
(receiver=0x292a4f0, event=0x7ffe94778b80) at
kernel/qcoreapplication.cpp:1064
#15 0x00007f866c324ffe in
QEventDispatcherUNIXPrivate::activateSocketNotifiers() (this=0xcabc50)
at kernel/qeventdispatcher_unix.cpp:304
#16 0x00007f866c325375 in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=<optimized out>, flags=...) at kernel/qeventdispatcher_unix.cpp:511
#17 0x000000000053ed41 in
QUnixEventDispatcherQPA::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
()
#18 0x00007f866c2d51e2 in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7ffe94778cf0, flags=..., flags@entry=...)
at ../../include/QtCore/../../src/corelib/global/qflags.h:69
#19 0x00007f866c2dd724 in QCoreApplication::exec() ()
at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#20 0x00007f866c71cc40 in QGuiApplication::exec() () at
kernel/qguiapplication.cpp:1860
#21 0x00007f866b1563b9 in QApplication::exec() () at
kernel/qapplication.cpp:2824
#22 0x0000000000446ef3 in main(int, char**) (argc=<optimized out>,
argv=<optimized out>)
at /home/nate/kde/src/kwin/src/main_wayland.cpp:657
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