https://bugs.kde.org/show_bug.cgi?id=442846
Weng Xuetian <wen...@gmail.com> changed:
What |Removed |Added
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CC| |wen...@gmail.com
--- Comment #25 from Weng Xuetian <wen...@gmail.com> ---
It seems that I'm also affected by this.
For some other probably unrelated reason, unplug external monitor would cause
SIGSEGV on Xwayland on my setup, but I observed that kwin freeze due to this
in this case.
I gdb attached to Xwayland and noticed Xwayland received a sigsegv, after
detach from gdb, noticed Xwayland become a zombie process.
Relevant stack trace in kwin, looks similar to the existing ones.
It seems that kwin is blocked on some X event request and never returns.
I'd say we should try to manage Xwayland process in a separate thread,
otherwise we may fail to collect xwayland process when making a blocking call.
#0 0x00007f18b7bd32af in poll () at /usr/lib/libc.so.6
#1 0x00007f18b8d8963b in () at /usr/lib/libxcb.so.1
#2 0x00007f18b8d8b08f in () at /usr/lib/libxcb.so.1
#3 0x00007f18b8d8b1a2 in xcb_wait_for_reply () at /usr/lib/libxcb.so.1
#4 0x00007f18ba58339a in KWin::Workspace::updateXStackingOrder() () at
/usr/lib/libkwin.so.5
#5 0x00007f18ba583479 in KWin::Workspace::xStackingOrder() const () at
/usr/lib/libkwin.so.5
#6 0x00007f18ba512243 in KWin::Compositor::windowsToRender() const () at
/usr/lib/libkwin.so.5
#7 0x00007f18ba5127be in KWin::Compositor::composite(KWin::RenderLoop*) () at
/usr/lib/libkwin.so.5
#8 0x00007f18b84af463 in () at /usr/lib/libQt5Core.so.5
#9 0x00007f18ba4d07a7 in KWin::RenderLoop::frameRequested(KWin::RenderLoop*)
() at /usr/lib/libkwin.so.5
#10 0x00007f18ba5a1c18 in KWin::RenderLoopPrivate::dispatch() () at
/usr/lib/libkwin.so.5
#11 0x00007f18b84af463 in () at /usr/lib/libQt5Core.so.5
#12 0x00007f18b84b169f in QTimer::timeout(QTimer::QPrivateSignal) () at
/usr/lib/libQt5Core.so.5
#13 0x00007f18b84a2766 in QObject::event(QEvent*) () at
/usr/lib/libQt5Core.so.5
#14 0x00007f18b8f3c1c6 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /usr/lib/libQt5Widgets.so.5
#15 0x00007f18b847e5aa in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at /usr/lib/libQt5Core.so.5
#16 0x00007f18b84c9dd5 in QTimerInfoList::activateTimers() () at
/usr/lib/libQt5Core.so.5
#17 0x00007f18b84ca272 in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/libQt5Core.so.5
#18 0x0000557e3c5a97e2 in ()
#19 0x00007f18b847688b in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/libQt5Core.so.5
#20 0x00007f18b8481fd7 in QCoreApplication::exec() () at
/usr/lib/libQt5Core.so.5
#21 0x0000557e3c4b832a in ()
#22 0x00007f18b7afa310 in __libc_start_call_main () at /usr/lib/libc.so.6
#23 0x00007f18b7afa3c1 in __libc_start_main_impl () at /usr/lib/libc.so.6
#24 0x0000557e3c4b9ab5 in ()
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