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authorDmitry Mishin <dim@openvz.org>2006-08-31 18:28:39 -0400
committerDavid S. Miller <davem@sunset.davemloft.net>2006-09-22 18:18:47 -0400
commitfda9ef5d679b07c9d9097aaf6ef7f069d794a8f9 (patch)
tree6a265dc2038bc5568c5a499e6c8d4733650ed3f7 /net/ipv4/tcp_ipv4.c
parentdc435e6dac1439340eaeceef84022c4e4749796d (diff)
[NET]: Fix sk->sk_filter field access
Function sk_filter() is called from tcp_v{4,6}_rcv() functions with arg needlock = 0, while socket is not locked at that moment. In order to avoid this and similar issues in the future, use rcu for sk->sk_filter field read protection. Signed-off-by: Dmitry Mishin <dim@openvz.org> Signed-off-by: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Signed-off-by: Kirill Korotaev <dev@openvz.org>
Diffstat (limited to 'net/ipv4/tcp_ipv4.c')
-rw-r--r--net/ipv4/tcp_ipv4.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 23b46e36b147..39b179856082 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -1104,7 +1104,7 @@ process:
1104 goto discard_and_relse; 1104 goto discard_and_relse;
1105 nf_reset(skb); 1105 nf_reset(skb);
1106 1106
1107 if (sk_filter(sk, skb, 0)) 1107 if (sk_filter(sk, skb))
1108 goto discard_and_relse; 1108 goto discard_and_relse;
1109 1109
1110 skb->dev = NULL; 1110 skb->dev = NULL;