On 7/12/21 8:32 AM, Matthew Wilcox (Oracle) wrote:
> Rewrite copy_huge_page() and move it into mm/util.c so it's always
> available. Fixes an exposure of uninitialised memory on configurations
> with HUGETLB and UFFD enabled and MIGRATION disabled.
>
> Fixes: 8cc5fcbb5be8 ("mm, hugetlb: fix racy resv_huge_pages underflow on UFFDIO_COPY")
> Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
> ---
> include/linux/migrate.h | 5 -----
> include/linux/mm.h | 1 +
> mm/migrate.c | 48 -----------------------------------------
> mm/util.c | 10 +++++++++
> 4 files changed, 11 insertions(+), 53 deletions(-)
Thanks Matthew,
Reviewed-by: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
--
Mike Kravetz
