mutter/clutter
Jonas Dreßler c64803770e clutter: Bail out and warn on reentry into mapping/unmapping cycle
There's a bunch of crashes right now where the assertions in
clutter_actor_set_mapped() after calling the map/unmap() vfuncs are
failing. The only way this can happen is by re-entering
clutter_actor_set_mapped() during the map/unmap recursion.

The reason for those crashes is that the shell hides/shows some actors
in response to crossing events and key-focus changes. These in turn get
triggered by the newly introduced ungrabbing of ClutterGrabs when an
actor gets unmapped, which triggers GRAB_NOTIFY crossing events and
key-focus changes.

Since these situations are hardly avoidable (it's a valid use-case to
hide/show something in response to a crossing/key-focus event), catch
the set_mapped() call early while we reenter the mapping machinery and
log a warning instead of crashing.

Fixes: https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/3165
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2299>
2022-04-21 10:09:59 +00:00
..
clutter clutter: Bail out and warn on reentry into mapping/unmapping cycle 2022-04-21 10:09:59 +00:00
.gitignore clutter: Remove clutter specific version 2018-11-06 17:17:36 +01:00
meson.build clutter: Move pointer a11y settings management from MetaInputSettings 2021-05-05 19:07:26 +00:00