#1148747 libmutter-18-0: Copying ~200 MB crashes the compositor

Package:
libmutter-18-0
Source:
libmutter-18-0
Description:
window manager library from the Mutter window manager
Submitter:
Julien Palard
Date:
2026-09-22 23:37:02 UTC
Severity:
normal
#1148747#5
Date:
2026-09-22 23:34:10 UTC
From:
To:
Dear Maintainer,

Using the following command:

    yes | head -n 100000000 | wl-copy

Or any variation on copying > 200 MB immediatly crashes the wayland compositor.

I discovered this while editing a file with emacs-pgtk: using C-w on a
way-too-big selection (>200MB of text) leads to the exact same crash.