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| author | Eric Dumazet <edumazet@google.com> | 2022-05-13 11:55:45 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-05-16 10:31:06 +0100 |
| commit | 36f7cec4f3af352d7f2c646461afba4cf7fd77b0 (patch) | |
| tree | a485df3860e4ef1cebb569b227f0ea7a0509f5b5 | |
| parent | e5fccaa1eb7f6116deab0f708a787e2de915869f (diff) | |
| download | linux-36f7cec4f3af352d7f2c646461afba4cf7fd77b0.tar.gz linux-36f7cec4f3af352d7f2c646461afba4cf7fd77b0.tar.bz2 linux-36f7cec4f3af352d7f2c646461afba4cf7fd77b0.zip | |
dccp: use READ_ONCE() to read sk->sk_bound_dev_if
When reading listener sk->sk_bound_dev_if locklessly,
we must use READ_ONCE().
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/dccp/ipv4.c | 2 | ||||
| -rw-r--r-- | net/dccp/ipv6.c | 4 |
2 files changed, 3 insertions, 3 deletions
diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c index 82696ab86f74..307424872160 100644 --- a/net/dccp/ipv4.c +++ b/net/dccp/ipv4.c @@ -628,7 +628,7 @@ int dccp_v4_conn_request(struct sock *sk, struct sk_buff *skb) sk_daddr_set(req_to_sk(req), ip_hdr(skb)->saddr); ireq->ir_mark = inet_request_mark(sk, skb); ireq->ireq_family = AF_INET; - ireq->ir_iif = sk->sk_bound_dev_if; + ireq->ir_iif = READ_ONCE(sk->sk_bound_dev_if); /* * Step 3: Process LISTEN state diff --git a/net/dccp/ipv6.c b/net/dccp/ipv6.c index 4d95b6400915..d717ef0def64 100644 --- a/net/dccp/ipv6.c +++ b/net/dccp/ipv6.c @@ -374,10 +374,10 @@ static int dccp_v6_conn_request(struct sock *sk, struct sk_buff *skb) refcount_inc(&skb->users); ireq->pktopts = skb; } - ireq->ir_iif = sk->sk_bound_dev_if; + ireq->ir_iif = READ_ONCE(sk->sk_bound_dev_if); /* So that link locals have meaning */ - if (!sk->sk_bound_dev_if && + if (!ireq->ir_iif && ipv6_addr_type(&ireq->ir_v6_rmt_addr) & IPV6_ADDR_LINKLOCAL) ireq->ir_iif = inet6_iif(skb); |