bool __check_rb_tree_consistence(struct f2fs_sb_info *sbi,
						struct rb_root *root)
{
#ifdef CONFIG_F2FS_CHECK_FS
	struct rb_node *cur = rb_first(root), *next;
	struct rb_entry *cur_re, *next_re;

	if (!cur)
		return true;

	while (cur) {
		next = rb_next(cur);
		if (!next)
			return true;

		cur_re = rb_entry(cur, struct rb_entry, rb_node);
		next_re = rb_entry(next, struct rb_entry, rb_node);

		if (cur_re->ofs + cur_re->len > next_re->ofs) {
			f2fs_msg(sbi->sb, KERN_INFO, "inconsistent rbtree, "
				"cur(%u, %u) next(%u, %u)",
				cur_re->ofs, cur_re->len,
				next_re->ofs, next_re->len);
			return false;
		}

		cur = next;
	}
#endif
	return true;
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.