On Wed, Jun 01, 2016 at 02:04:44AM +0200, Florian Westphal wrote: > Quoting John Stultz: > In updating a 32bit arm device from 4.6 to Linus' current HEAD, I > noticed I was having some trouble with networking, and realized that > /proc/net/ip_tables_names was suddenly empty. > Digging through the registration process, it seems we're catching on the: > > if (strcmp(t->u.user.name, XT_STANDARD_TARGET) == 0 && > target_offset + sizeof(struct xt_standard_target) != next_offset) > return -EINVAL; > > Where next_offset seems to be 4 bytes larger then the > offset + standard_target struct size. > > next_offset needs to be aligned via XT_ALIGN (so we can access all members > of ip(6)t_entry struct). > > This problem didn't show up on i686 as it only needs 4-byte alignment for > u64, but iptables userspace on other 32bit arches does insert extra padding. Applied, thanks Florian. -- 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
