From: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> Date: Thu, 28 Oct 2010 20:51:43 +0200 >> + u8 tproto; > > tproto is unsigned... > >> + const struct xt_socket_mtinfo1 *info = (struct xt_socket_mtinfo1 *) par->matchinfo; >> + >> + tproto = ipv6_find_hdr(skb, &thoff, -1, NULL); > > but ipv6_find_hdr() returns int, and negative values for errors... Thanks Geert, I'll fix it like so: -------------------- netfilter: xt_socket: Make tproto signed in socket_mt6_v1(). Otherwise error indications from ipv6_find_hdr() won't be noticed. This required making the protocol argument to extract_icmp6_fields() signed too. Reported-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> --- net/netfilter/xt_socket.c | 7 +++---- 1 files changed, 3 insertions(+), 4 deletions(-) diff --git a/net/netfilter/xt_socket.c b/net/netfilter/xt_socket.c index d94a858..00d6ae8 100644 --- a/net/netfilter/xt_socket.c +++ b/net/netfilter/xt_socket.c @@ -195,7 +195,7 @@ socket_mt4_v1(const struct sk_buff *skb, struct xt_action_param *par) static int extract_icmp6_fields(const struct sk_buff *skb, unsigned int outside_hdrlen, - u8 *protocol, + int *protocol, struct in6_addr **raddr, struct in6_addr **laddr, __be16 *rport, @@ -252,8 +252,7 @@ socket_mt6_v1(const struct sk_buff *skb, struct xt_action_param *par) struct sock *sk; struct in6_addr *daddr, *saddr; __be16 dport, sport; - int thoff; - u8 tproto; + int thoff, tproto; const struct xt_socket_mtinfo1 *info = (struct xt_socket_mtinfo1 *) par->matchinfo; tproto = ipv6_find_hdr(skb, &thoff, -1, NULL); @@ -305,7 +304,7 @@ socket_mt6_v1(const struct sk_buff *skb, struct xt_action_param *par) sk = NULL; } - pr_debug("proto %hhu %pI6:%hu -> %pI6:%hu " + pr_debug("proto %hhd %pI6:%hu -> %pI6:%hu " "(orig %pI6:%hu) sock %p\n", tproto, saddr, ntohs(sport), daddr, ntohs(dport), -- 1.7.3.2 -- 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