replace slub_debug=P page_poison=1
replace slub_debug=P page_poison=1

see
- https://cateee.net/lkddb/web-lkddb/INIT_ON_ALLOC_DEFAULT_ON.html
- https://outflux.net/blog/archives/2019/11/14/security-things-in-linux-v5-3/
- https://github.com/archlinux/svntogit-packages/commit/8ef9782ea796d82cf363f3fea385dec2c395f22f
- https://github.com/void-linux/void-packages/commit/bd0d33eec0bd774d8cc62e32689b6fbfda517179

atweiden/holovault