https://bugs.kde.org/show_bug.cgi?id=479791
Bug ID: 479791
Summary: kwin_x11 crashed at
KWin::Compositor::compositingToggled when I alt+tabbed
from a game
Classification: Plasma
Product: kwin
Version: master
Platform: openSUSE
OS: Linux
Status: REPORTED
Keywords: drkonqi
Severity: crash
Priority: NOR
Component: compositing
Assignee: kwin-bugs-n...@kde.org
Reporter: qydwhotm...@gmail.com
Target Milestone: ---
Flags: X11+
SUMMARY
When I press Alt+Tab to switch from a fullscreen game window, kwin_x11 often
crashes.
STEPS TO REPRODUCE
1. Start "Haunted House" from Steam with Proton Experimental
2. Set the game window to fullscreen
3. Press Alt+Tab
OBSERVED RESULT
The window decoration sometimes disappears, which means kwin_x11 sometimes
crashes.
EXPECTED RESULT
No crash
SOFTWARE/OS VERSIONS
Windows:
macOS:
Linux/KDE Plasma:
(available in About System)
KDE Plasma Version: 6.0 RC1
KDE Frameworks Version:
Qt Version: 6.6.1
ADDITIONAL INFORMATION
(gdb) bt
#0 0x00007f55ae491dec in __pthread_kill_implementation () at /lib64/libc.so.6
#1 0x00007f55ae43f0c6 in raise () at /lib64/libc.so.6
#2 0x00007f55b20fdb93 in KCrash::defaultCrashHandler(int) () at
/lib64/libKF6Crash.so.6
#3 0x00007f55ae43f190 in <signal handler called> () at /lib64/libc.so.6
#4 0x00007f55b1bc6f2f in () at /lib64/libkwin.so.6
#5 0x00007f55aedda613 in QtPrivate::QSlotObjectBase::call(QObject*, void**)
(a=0x7ffd610630b0, r=0x564e038482c0, this=0x564e03e27d50)
at
/usr/src/debug/qtbase-everywhere-src-6.6.1/build/include/QtCore/../../../src/corelib/kernel/qobjectdefs_impl.h:433
#6 doActivate<false>(QObject*, int, void**) (sender=0x564e02986b70,
signal_index=3, argv=0x7ffd610630b0)
at
/usr/src/debug/qtbase-everywhere-src-6.6.1/src/corelib/kernel/qobject.cpp:4021
#7 0x00007f55b1a38a7f in KWin::Compositor::compositingToggled(bool) () at
/lib64/libkwin.so.6
#8 0x00007f55b1a3eec0 in KWin::X11Compositor::stop() () at /lib64/libkwin.so.6
#9 0x00007f55aedca96e in QObject::event(QEvent*) (this=0x564e02986b70,
e=0x564e02975120)
at
/usr/src/debug/qtbase-everywhere-src-6.6.1/src/corelib/kernel/qobject.cpp:1437
#10 0x00007f55affc094e in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /lib64/libQt6Widgets.so.6
#11 0x00007f55aed87268 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
(receiver=0x564e02986b70, event=0x564e02975120)
at
/usr/src/debug/qtbase-everywhere-src-6.6.1/src/corelib/kernel/qcoreapplication.cpp:1121
#12 0x00007f55aed872a9 in QCoreApplication::sendEvent(QObject*, QEvent*)
(receiver=<optimized out>, event=<optimized out>)
at
/usr/src/debug/qtbase-everywhere-src-6.6.1/src/corelib/kernel/qcoreapplication.cpp:1539
#13 0x00007f55aed875c7 in QCoreApplicationPrivate::sendPostedEvents(QObject*,
int, QThreadData*)
(receiver=0x0, event_type=0, data=0x564e0258df10)
at
/usr/src/debug/qtbase-everywhere-src-6.6.1/src/corelib/kernel/qcoreapplication.cpp:1901
#14 0x00007f55aefa5d83 in postEventSourceDispatch(GSource*, GSourceFunc,
gpointer) (s=0x564e0266ab40)
at
/usr/src/debug/qtbase-everywhere-src-6.6.1/src/corelib/kernel/qeventdispatcher_glib.cpp:243
#15 0x00007f55add13f30 in () at /lib64/libglib-2.0.so.0
#16 0x00007f55add15b58 in () at /lib64/libglib-2.0.so.0
#17 0x00007f55add1620c in g_main_context_iteration () at
/lib64/libglib-2.0.so.0
--Type <RET> for more, q to quit, c to continue without paging--c
#18 0x00007f55aefab12c in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x564e0263ea00, flags=...)
at
/usr/src/debug/qtbase-everywhere-src-6.6.1/src/corelib/kernel/qeventdispatcher_glib.cpp:393
#19 0x00007f55aed91adb in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7ffd610634f0,
flags=...)
at
/usr/src/debug/qtbase-everywhere-src-6.6.1/build/include/QtCore/../../../src/corelib/global/qflags.h:34
#20 0x00007f55aed8b706 in QCoreApplication::exec() ()
at
/usr/src/debug/qtbase-everywhere-src-6.6.1/build/include/QtCore/../../../src/corelib/global/qflags.h:74
#21 0x0000564e020b50b0 in ()
#22 0x00007f55ae4281b0 in __libc_start_call_main () at /lib64/libc.so.6
#23 0x00007f55ae428279 in __libc_start_main_impl () at /lib64/libc.so.6
#24 0x0000564e020b94a5 in ()
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