On Mon, May 09, 2022 at 09:14:06PM +0800, Miaohe Lin wrote:
> If offset exceeds the si->max, print bad swap offset entry to help debug
> the unexpected case.
>
> Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Reviewed-by: Oscar Salvador <osalvador@xxxxxxx>
> ---
> mm/swapfile.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/mm/swapfile.c b/mm/swapfile.c
> index 0aee6286d6a7..d4b81ca887c0 100644
> --- a/mm/swapfile.c
> +++ b/mm/swapfile.c
> @@ -1272,6 +1272,7 @@ struct swap_info_struct *get_swap_device(swp_entry_t entry)
> out:
> return NULL;
> put_out:
> + pr_err("%s: %s%08lx\n", __func__, Bad_offset, entry.val);
> percpu_ref_put(&si->users);
> return NULL;
> }
> --
> 2.23.0
>
>
--
Oscar Salvador
SUSE Labs
