Re: [RFC v2 0/4] vmalloc_exec for modules and BPF programs

[Christoph Hellwig]

On Tue, Oct 18, 2022 at 03:05:24PM +0000, Song Liu wrote:
> Maybe we need something like vcopy_exec(x_mem, tmp_buf, size), where
> we explicitly check the allowed memory of x_mem is bigger or equal to
> size. And users of vmalloc_exec should only use vcopy_exec to update
> memory from vmalloc_exec. 
> 
> Does this make sense? Did I understand your concern correctly? 

It sounds sensible.  Make sure it iѕ properly documented and reviewed
by people that actually know this area.  I just know enough to ask
stupid question, not to very something is actually correct :)