https://bugs.kde.org/show_bug.cgi?id=406784
Bug ID: 406784
Summary: Alt-tab makes KWin crash when the window is destroyed
during switch
Product: kwin
Version: 5.15.3
Platform: Gentoo Packages
OS: Linux
Status: REPORTED
Keywords: drkonqi
Severity: crash
Priority: NOR
Component: general
Assignee: kwin-bugs-n...@kde.org
Reporter: steo...@gmail.com
Target Milestone: ---
Application: kwin_x11 (5.15.3)
Qt Version: 5.11.3
Frameworks Version: 5.56.0
Operating System: Linux 4.19.0-sabayon x86_64
Distribution: "Sabayon Linux amd64 19.01"
-- Information about the crash:
- What I was doing when the application crashed:
I was using Audacity, the main window creates dialog boxes when for example
exporting an audio. If I do alt-tab and I select the child dialog in the same
moment it is being destroyed, KWin crashes. I repeated multiple times and it
always happens the same.
The crash can be reproduced every time.
-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
[KCrash Handler]
#6 0x0000000000000000 in ?? ()
#7 0x00007f1e620e9e4d in KWin::Workspace::constrainedStackingOrder() () from
/usr/lib64/libkwin.so.5
#8 0x00007f1e620ea9a8 in KWin::Workspace::updateStackingOrder(bool) () from
/usr/lib64/libkwin.so.5
#9 0x00007f1e620eacc9 in KWin::Workspace::blockStackingUpdates(bool) () from
/usr/lib64/libkwin.so.5
#10 0x00007f1e62088fad in KWin::Client::destroyClient() () from
/usr/lib64/libkwin.so.5
#11 0x00007f1e620f7f59 in
KWin::Client::unmapNotifyEvent(xcb_unmap_notify_event_t*) () from
/usr/lib64/libkwin.so.5
#12 0x00007f1e620fbbcb in KWin::Client::windowEvent(xcb_generic_event_t*) ()
from /usr/lib64/libkwin.so.5
#13 0x00007f1e620fc575 in KWin::Workspace::workspaceEvent(xcb_generic_event_t*)
() from /usr/lib64/libkwin.so.5
#14 0x00007f1e5fadba77 in
QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) ()
from /usr/lib64/libQt5Core.so.5
#15 0x00007f1e410f8253 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*)
() from /usr/lib64/libQt5XcbQpa.so.5
#16 0x00007f1e410f8f34 in QXcbConnection::processXcbEvents() () from
/usr/lib64/libQt5XcbQpa.so.5
#17 0x00007f1e5fb0df2a in QObject::event(QEvent*) () from
/usr/lib64/libQt5Core.so.5
#18 0x00007f1e6083d70c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /usr/lib64/libQt5Widgets.so.5
#19 0x00007f1e608456f3 in QApplication::notify(QObject*, QEvent*) () from
/usr/lib64/libQt5Widgets.so.5
#20 0x00007f1e5fadeeb7 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() from /usr/lib64/libQt5Core.so.5
#21 0x00007f1e5fae2371 in QCoreApplicationPrivate::sendPostedEvents(QObject*,
int, QThreadData*) () from /usr/lib64/libQt5Core.so.5
#22 0x00007f1e5fb3760a in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib64/libQt5Core.so.5
#23 0x00007f1e4118e41c in ?? () from /usr/lib64/libQt5XcbQpa.so.5
#24 0x00007f1e5fadd6fa in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib64/libQt5Core.so.5
#25 0x00007f1e5fae6dc0 in QCoreApplication::exec() () from
/usr/lib64/libQt5Core.so.5
#26 0x00007f1e62911f6b in kdemain () from /usr/lib64/libkdeinit5_kwin_x11.so
#27 0x00007f1e62552d0a in __libc_start_main () from /lib64/libc.so.6
#28 0x0000563aa4dee82a in _start ()
[Inferior 1 (process 9255) detached]
The reporter indicates this bug may be a duplicate of or related to bug 392412,
bug 402546.
Possible duplicates by query: bug 404632, bug 402546, bug 400854, bug 397514,
bug 396975.
Reported using DrKonqi
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