On Mon, 29 Feb 2016, Jozsef Kadlecsik wrote:
> Hi,
>
> On Mon, 29 Feb 2016, Julia Lawall wrote:
>
> > The file net/netfilter/ipset/ip_set_bitmap_ipmac.c seems to contain a lot
> > of static functions that are not used in the file:
> >
> > bitmap_ipmac_add_timeout
> > bitmap_ipmac_do_add
> > bitmap_ipmac_do_del
> > bitmap_ipmac_do_head
> > bitmap_ipmac_do_list
> > bitmap_ipmac_do_test
> > bitmap_ipmac_gc_test
> > bitmap_ipmac_is_filled
> > bitmap_ipmac_kadt
> > bitmap_ipmac_same_set
> > bitmap_ipmac_uadt
> >
> > Have I overooked something?
>
> Yes: the file includes ip_set_bitmap_gen.h in which all those functions
> are used.
OK, thanks. I saw the incude, but I didn't sufficiently appreciate the
#defines at the beginning. Thanks.
> > I was looking at this code, with Daniel Borkmann, because there seems to
> > be a bug in the function bitmap_ipmac_uadt:
> >
> > if (tb[IPSET_ATTR_ETHER]) {
> > memcpy(e.ether, nla_data(tb[IPSET_ATTR_ETHER]), ETH_ALEN);
> > e.add_mac = 1;
> > }
> >
> > Later in the same file, there is:
> >
> > static struct ip_set_type bitmap_ipmac_type = {
> > ...
> > .adt_policy = {
> > ...
> > [IPSET_ATTR_ETHER] = { .type = NLA_BINARY,
> > .len = ETH_ALEN },
> > ...},
> > ...
> > };
> >
> > The type NLA_BINARY indicates that the length is a maximum possible
> > length, and thus a check of the actual length is needed before the memcpy.
>
> You are right here (and the similar spotting in ip_set_hash_mac.c) - I'll
> prepare a patch and submit it.
Great. Thanks.
julia
>
> Best regards,
> Jozsef
> -
> E-mail : kadlec@xxxxxxxxxxxxxxxxx, kadlecsik.jozsef@xxxxxxxxxxxxx
> PGP key : http://www.kfki.hu/~kadlec/pgp_public_key.txt
> Address : Wigner Research Centre for Physics, Hungarian Academy of Sciences
> H-1525 Budapest 114, POB. 49, Hungary
>
--
To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
