Re: [PATCH] mm/migrate: fix do_pages_move for compat pointers

[Andrew Morton]

On Tue,  3 Oct 2023 10:48:56 -0400 Gregory Price <gourry.memverge@xxxxxxxxx> wrote:

> do_pages_move does not handle compat pointers for the page list.
> correctly.  Add in_compat_syscall check and appropriate get_user
> fetch when iterating the page list.

What are the userspace visible effects of this change?