From: Julian Anastasov <ja@ssi.bg>
To: David Miller <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Subject: [PATCH] tcp: fix possible socket refcount problem for ipv6
Date: Wed, 5 Sep 2012 23:53:18 +0300 [thread overview]
Message-ID: <1346878398-4782-1-git-send-email-ja@ssi.bg> (raw)
commit 144d56e91044181ec0ef67aeca91e9a8b5718348
("tcp: fix possible socket refcount problem") is missing
the IPv6 part. As tcp_release_cb is shared by both protocols
we should hold sock reference for the TCP_MTU_REDUCED_DEFERRED
bit.
Signed-off-by: Julian Anastasov <ja@ssi.bg>
---
net/ipv6/tcp_ipv6.c | 5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 09078b9..f3bfb8b 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -403,8 +403,9 @@ static void tcp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
tp->mtu_info = ntohl(info);
if (!sock_owned_by_user(sk))
tcp_v6_mtu_reduced(sk);
- else
- set_bit(TCP_MTU_REDUCED_DEFERRED, &tp->tsq_flags);
+ else if (!test_and_set_bit(TCP_MTU_REDUCED_DEFERRED,
+ &tp->tsq_flags))
+ sock_hold(sk);
goto out;
}
--
1.7.3.4
next reply other threads:[~2012-09-05 20:50 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-05 20:53 Julian Anastasov [this message]
2012-09-05 20:57 ` [PATCH] tcp: fix possible socket refcount problem for ipv6 Eric Dumazet
2012-09-05 21:16 ` David Miller
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