[NETLINK]: illegal use of pid in rtnetlink

When a netlink message is not related to a netlink socket,
it is issued by kernel socket with pid 0. Netlink "pid" has nothing
to do with current->pid. I called it incorrectly, if it was named "port",
the confusion would be avoided.

Signed-off-by: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 8700379..eca2976 100644 (file)
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -455,7 +455,7 @@ void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change)
        if (!skb)
                return;
 
-       if (rtnetlink_fill_ifinfo(skb, dev, type, current->pid, 0, change, 0) < 0) {
+       if (rtnetlink_fill_ifinfo(skb, dev, type, 0, 0, change, 0) < 0) {
                kfree_skb(skb);
                return;
        }

diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index 95b9d81..3ffa60d 100644 (file)
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -1135,7 +1135,7 @@ static void rtmsg_ifa(int event, struct in_ifaddr* ifa)
 
        if (!skb)
                netlink_set_err(rtnl, 0, RTNLGRP_IPV4_IFADDR, ENOBUFS);
-       else if (inet_fill_ifaddr(skb, ifa, current->pid, 0, event, 0) < 0) {
+       else if (inet_fill_ifaddr(skb, ifa, 0, 0, event, 0) < 0) {
                kfree_skb(skb);
                netlink_set_err(rtnl, 0, RTNLGRP_IPV4_IFADDR, EINVAL);
        } else {

diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
index ef4724d..0f4145b 100644 (file)
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -1045,7 +1045,7 @@ fib_convert_rtentry(int cmd, struct nlmsghdr *nl, struct rtmsg *rtm,
        }
 
        nl->nlmsg_flags = NLM_F_REQUEST;
-       nl->nlmsg_pid = current->pid;
+       nl->nlmsg_pid = 0;
        nl->nlmsg_seq = 0;
        nl->nlmsg_len = NLMSG_LENGTH(sizeof(*rtm));
        if (cmd == SIOCDELRT) {