On Wed, Apr 17, 2019 at 10:46:47AM -0700, David Miller wrote:
> From: Stephen Suryaputra <ssuryae...@gmail.com>
> Date: Mon, 15 Apr 2019 20:31:57 -0400
>
> > @@ -850,6 +850,14 @@ static int __net_init inet6_net_init(struct net *net)
> > net->ipv6.sysctl.icmpv6_echo_ignore_all = 0;
> > net->ipv6.sysctl.icmpv6_echo_ignore_multicast = 0;
> > net->ipv6.sysctl.icmpv6_echo_ignore_anycast = 0;
> > + net->ipv6.sysctl.icmpv6_ratemask = kzalloc(ICMPV6_MSG_MAX + 1,
> > GFP_KERNEL);
> > + if (net->ipv6.sysctl.icmpv6_ratemask) {
> > + /* By default, rate limit error messages.
> > + * Except for pmtu discovery, it would break it.
> > + */
> > + bitmap_set(net->ipv6.sysctl.icmpv6_ratemask, 0,
> > ICMPV6_ERRMSG_MAX + 1);
> > + bitmap_clear(net->ipv6.sysctl.icmpv6_ratemask,
> > ICMPV6_PKT_TOOBIG, 1);
> > + }
>
> You're allocating space for ICMPV6_MSG_MAX + 1 "bytes" but you only need
> enough space
> for that many "bits". Which is just four 64-bit words, so you can probably
> inline it.
Doh, I thought I have divided it by 8. I will fix this and probably
inline it. Thanks.
