On Sun, 21 Aug 2022 16:18:48 -0700 John Hubbard <jhubbard@xxxxxxxxxx> wrote:
> > vmas[] array. We haven't messed with gup.c much this time around -
> > just one patch from Alistair ("mm/gup.c: simplify and fix
> > check_and_migrate_movable_pages() return codes"). It does touch this
> > area, but I can't immediately see how it could newly cause this.
> >
>
> Neither can I, even after looking at both of these recent commits to
> gup.c in this branch:
>
> commit 4d1225cd5560 ("mm/gup.c: simplify and fix
> check_and_migrate_movable_pages() return codes")
>
> commit 0e5d6dac6b65 ("mm/gup: fix FOLL_FORCE COW security issue and
> remove FOLL_COW")
>
> As you say, a bisection would really help here.
Might
https://lkml.kernel.org/r/20220821183547.950370-1-syoshida@xxxxxxxxxx
save us?
