diff options
| author | Eric Dumazet <edumazet@google.com> | 2012-08-10 06:22:47 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-08-11 01:08:57 +0400 |
| commit | b5ec8eeac46a99004c26791f70b15d001e970acf (patch) | |
| tree | 8609d6c3e5e9504e6f084828b9b0f8a9084652e3 /net/ipv4 | |
| parent | 63d02d157ec4124990258d66517b6c11fd6df0cf (diff) | |
| download | linux-b5ec8eeac46a99004c26791f70b15d001e970acf.tar.xz | |
ipv4: fix ip_send_skb()
ip_send_skb() can send orphaned skb, so we must pass the net pointer to
avoid possible NULL dereference in error path.
Bug added by commit 3a7c384ffd57 (ipv4: tcp: unicast_sock should not
land outside of TCP stack)
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/ip_output.c | 5 | ||||
| -rw-r--r-- | net/ipv4/udp.c | 2 |
2 files changed, 3 insertions, 4 deletions
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c index ec410e08b4b9..147ccc3e93db 100644 --- a/net/ipv4/ip_output.c +++ b/net/ipv4/ip_output.c @@ -1366,9 +1366,8 @@ out: return skb; } -int ip_send_skb(struct sk_buff *skb) +int ip_send_skb(struct net *net, struct sk_buff *skb) { - struct net *net = sock_net(skb->sk); int err; err = ip_local_out(skb); @@ -1391,7 +1390,7 @@ int ip_push_pending_frames(struct sock *sk, struct flowi4 *fl4) return 0; /* Netfilter gets whole the not fragmented skb. */ - return ip_send_skb(skb); + return ip_send_skb(sock_net(sk), skb); } /* diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index b4c3582a991f..6f6d1aca3c3d 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -758,7 +758,7 @@ static int udp_send_skb(struct sk_buff *skb, struct flowi4 *fl4) uh->check = CSUM_MANGLED_0; send: - err = ip_send_skb(skb); + err = ip_send_skb(sock_net(sk), skb); if (err) { if (err == -ENOBUFS && !inet->recverr) { UDP_INC_STATS_USER(sock_net(sk), |