On Fri, 25 Jan 2019 09:38:27 -0800 Matthew Wilcox <willy@xxxxxxxxxxxxx> wrote: > It's never appropriate to map a page allocated by SLAB into userspace. > A buggy device driver might try this, or an attacker might be able to > find a way to make it happen. It wouldn't surprise me if someone somewhere is doing this. Rather than mysteriously breaking their code, how about we emit a warning and still permit it to proceed, for a while?
