diff options
| author | Eric Dumazet <edumazet@google.com> | 2023-09-12 16:01:59 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-09-15 10:33:46 +0100 |
| commit | b0adfba7ee770fef20b1b6d86706c28f7fccfb07 (patch) | |
| tree | 4a7a9fe910c850fcc4492d034cf57d0db89c4ae2 /net/ipv6/mcast.c | |
| parent | f2fa1c812c91e99d0317d1fc7d845e1e05f39716 (diff) | |
ipv6: lockless IPV6_UNICAST_HOPS implementation
Some np->hop_limit accesses are racy, when socket lock is not held.
Add missing annotations and switch to full lockless implementation.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/mcast.c')
| -rw-r--r-- | net/ipv6/mcast.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c index 421264a69e97..4a7967623909 100644 --- a/net/ipv6/mcast.c +++ b/net/ipv6/mcast.c @@ -1716,7 +1716,7 @@ static void ip6_mc_hdr(const struct sock *sk, struct sk_buff *skb, hdr->payload_len = htons(len); hdr->nexthdr = proto; - hdr->hop_limit = inet6_sk(sk)->hop_limit; + hdr->hop_limit = READ_ONCE(inet6_sk(sk)->hop_limit); hdr->saddr = *saddr; hdr->daddr = *daddr; |