Control: reassign -1 gnome-shell-extension-pixelsaver
Control: tags -1 - moreinfo
Le 29/06/2023 à 11:25, Simon McVittie a écrit :
I noticed there are many zombie "xprop" processes on my system, whose
parent is gnome-shell. They disappear when I restart the session, but
then start reappearing progressively.
gnome-shell doesn't have any mentions of xprop in its source code,
so this is probably a Shell extension (which run as part of the
gnome-shell process and are just as powerful as Shell itself, but with
less experienced upstream maintainers). Please disable all extensions
and see whether the problem persists.
Based on codesearch.debian.net I'm going to guess that you probably
use gnome-shell-extension-pixelsaver, which is documented as "depends
on Xorg's `xprop` and `xwininfo` utilities", and contains at least one
suspicious use of GLib.SpawnFlags.DO_NOT_REAP_CHILD which seems likely
to cause zombie processes.
Indeed, you seem to be right: after disabling this extension, xprop
zombies are gone.
(I don't know why pixelsaver is using xprop to communicate "please don't
draw a titlebar", rather than making use of its ability to execute
arbitrary code in gnome-shell to not draw the titlebar even if the app
asked for one.)
--
Stéphane
