Jeremy Sowden <jer...@azazel.net> wrote: > skb_make_writable was removed from the kernel in 5.2 and its callers > converted to use skb_ensure_writable. > > Signed-off-by: Jeremy Sowden <jer...@azazel.net> > --- > extensions/xt_DHCPMAC.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/extensions/xt_DHCPMAC.c b/extensions/xt_DHCPMAC.c > index 47f9534f74c7..412f8984d326 100644 > --- a/extensions/xt_DHCPMAC.c > +++ b/extensions/xt_DHCPMAC.c > @@ -96,7 +96,7 @@ dhcpmac_tg(struct sk_buff *skb, const struct > xt_action_param *par) > struct udphdr udpbuf, *udph; > unsigned int i; > > - if (!skb_make_writable(skb, 0)) > + if (!skb_ensure_writable(skb, 0)) > return NF_DROP;
You need to drop the "!". The "0" argument is suspicious as well, i guess this needs to be "skb->len".
