static struct bio *f2fs_grab_bio(struct inode *inode, block_t blkaddr,
				 unsigned nr_pages)
{
	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
	struct fscrypt_ctx *ctx = NULL;
	struct bio *bio;

	if (f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode)) {
		ctx = fscrypt_get_ctx(inode, GFP_NOFS);
		if (IS_ERR(ctx))
			return ERR_CAST(ctx);

		/* wait the page to be moved by cleaning */
		f2fs_wait_on_encrypted_page_writeback(sbi, blkaddr);
	}

	bio = bio_alloc(GFP_KERNEL, min_t(int, nr_pages, BIO_MAX_PAGES));
	if (!bio) {
		if (ctx)
			fscrypt_release_ctx(ctx);
		return ERR_PTR(-ENOMEM);
	}
	f2fs_target_device(sbi, blkaddr, bio);
	bio->bi_end_io = f2fs_read_end_io;
	bio->bi_private = ctx;

	return bio;
}

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.