On Mon, Dec 17, 2018 at 4:24 PM Stefano Brivio <sbri...@redhat.com> wrote: > > On Mon, 17 Dec 2018 06:57:35 -0800 > Eric Dumazet <eric.duma...@gmail.com> wrote: > > > Might be cause by commit b8a51b38e4d4dec3e379d52c0fe1a66827f7cf1e > > fou, fou6: ICMP error handlers for FoU and GUE > > This: > > diff --git a/net/ipv4/fou.c b/net/ipv4/fou.c > index 0d0ad19ecb87..20a6de26d146 100644 > --- a/net/ipv4/fou.c > +++ b/net/ipv4/fou.c > @@ -1008,6 +1008,9 @@ static int gue_err_proto_handler(int proto, struct > sk_buff *skb, u32 info) > { > const struct net_protocol *ipprot = > rcu_dereference(inet_protos[proto]); > > + if (ipprot == IPPROTO_UDP) > + return -EINVAL; > + > if (ipprot && ipprot->err_handler) { > if (!ipprot->err_handler(skb, info)) > return 0; > > should fix the issue, but I still have to run tests and make sure we > don't hit similar cases.
Please don't forget to add a regression test for it too ;)