Re: [syzbot] [fs?] [mm?] WARNING in page_copy_sane

[Matthew Wilcox]

On Mon, Sep 18, 2023 at 01:10:21PM -0500, Sidhartha Kumar wrote:
> @@ -382,8 +382,8 @@ static ssize_t hugetlbfs_read_iter(struct kiocb *iocb, struct iov_iter *to)
>  			/*
>  			 * We have the page, copy it to user space buffer.
>  			 */
> -			copied = copy_page_to_iter(page, offset, want, to);
> -			put_page(page);
> +			copied = copy_page_to_iter(&folio->page, offset, want, to);

copy_folio_to_iter() please.  Yes, I know it's just a wrapper today.

> +			folio_put(folio);
>  		}
>  		offset += copied;
>  		retval += copied;
> -- 
> 2.41.0
>