https://bugzilla.kernel.org/show_bug.cgi?id=211277
--- Comment #6 from kolAflash (kolAflash@kolahilft.de) --- (In reply to Jerome C from comment #4)
[...] Do you have kernel parameter set "init_on_free=1" or in your kernel config "CONFIG_INIT_ON_FREE_DEFAULT_ON=y", [...]
I'm using the Debian-11 (Testing / Bullseye) standard kernel.
$ grep -i init_on_free /boot/config-5.10.0-2-amd64 # CONFIG_INIT_ON_FREE_DEFAULT_ON is not set