can't keep the framework running correctly about fisy-fuzz HOT 1 OPEN

    @staticmethod
    def get_offset_in_sb(fn):
        off = 0
        sb = EXT_SB
        for i, v in sb:
            if i == fn:
                return off, sizeof(v)
            off += sizeof(v)
        return None, None

    def read_superblock_in_dict(self, loc=SBLOCK_EXT2):
        with open(self.fs, "rb") as f:
            f.seek(loc)
            for field in self.fields_sb:
                self.sb[field[0]] = f.read(sizeof(field[1]))

    def find_all_superblocks(self):
        self.read_superblock_in_dict()
        with open(self.fs, "rb") as f:
            f.seek(0)
            data = f.read()
            # Using uuid because the EXT2 magic is too short to yield good results
            matches = re.finditer(self.sb["e2fs_uuid"], data)
            for m in matches:
                bytearr = bytearray()
                sb = m.span()[0] - 104
                bytearr.append(data[sb + MAGIC_BYTES_OFF])
                bytearr.append(data[sb + MAGIC_BYTES_OFF + 1])
                if bytearr == EXT_MAGIC:
                    self.sb_locs.append(sb)
        return self.sb_locs