diff options
| -rw-r--r-- | net/ipv4/ping.c | 32 |
1 files changed, 18 insertions, 14 deletions
diff --git a/net/ipv4/ping.c b/net/ipv4/ping.c index e8e680e..353a44b 100644 --- a/net/ipv4/ping.c +++ b/net/ipv4/ping.c @@ -884,10 +884,12 @@ int ping_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, /* Copy the address and add cmsg data. */ if (family == AF_INET) { sin = (struct sockaddr_in *) msg->msg_name; - sin->sin_family = AF_INET; - sin->sin_port = 0 /* skb->h.uh->source */; - sin->sin_addr.s_addr = ip_hdr(skb)->saddr; - memset(sin->sin_zero, 0, sizeof(sin->sin_zero)); + if (sin) { + sin->sin_family = AF_INET; + sin->sin_port = 0 /* skb->h.uh->source */; + sin->sin_addr.s_addr = ip_hdr(skb)->saddr; + memset(sin->sin_zero, 0, sizeof(sin->sin_zero)); + } if (isk->cmsg_flags) ip_cmsg_recv(msg, skb); @@ -897,17 +899,19 @@ int ping_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, struct ipv6_pinfo *np = inet6_sk(sk); struct ipv6hdr *ip6 = ipv6_hdr(skb); sin6 = (struct sockaddr_in6 *) msg->msg_name; - sin6->sin6_family = AF_INET6; - sin6->sin6_port = 0; - sin6->sin6_addr = ip6->saddr; - - sin6->sin6_flowinfo = 0; - if (np->sndflow) - sin6->sin6_flowinfo = - *(__be32 *)ip6 & IPV6_FLOWINFO_MASK; - sin6->sin6_scope_id = ipv6_iface_scope_id(&sin6->sin6_addr, - IP6CB(skb)->iif); + if (sin6) { + sin6->sin6_family = AF_INET6; + sin6->sin6_port = 0; + sin6->sin6_addr = ip6->saddr; + sin6->sin6_flowinfo = 0; + if (np->sndflow) + sin6->sin6_flowinfo = + *(__be32 *)ip6 & IPV6_FLOWINFO_MASK; + sin6->sin6_scope_id = + ipv6_iface_scope_id(&sin6->sin6_addr, + IP6CB(skb)->iif); + } if (inet6_sk(sk)->rxopt.all) pingv6_ops.datagram_recv_ctl(sk, msg, skb); |