diff options
| author | Eric Dumazet <[email protected]> | 2025-06-20 13:30:00 +0000 |
|---|---|---|
| committer | Jakub Kicinski <[email protected]> | 2025-06-24 00:04:03 +0000 |
| commit | e84a4927a404f369c842c19de93b216627fcc690 (patch) | |
| tree | 901784e2f1bbcbcfbc36eff81b0d685abd7140e6 /net/ipv6/udp.c | |
| parent | caif: reduce stack size, again (diff) | |
| download | kernel-e84a4927a404f369c842c19de93b216627fcc690.tar.gz kernel-e84a4927a404f369c842c19de93b216627fcc690.zip | |
net: annotate races around sk->sk_uid
sk->sk_uid can be read while another thread changes its
value in sockfs_setattr().
Add sk_uid(const struct sock *sk) helper to factorize the needed
READ_ONCE() annotations, and add corresponding WRITE_ONCE()
where needed.
Fixes: 86741ec25462 ("net: core: Add a UID field to struct sock.")
Signed-off-by: Eric Dumazet <[email protected]>
Cc: Lorenzo Colitti <[email protected]>
Reviewed-by: Maciej Żenczykowski <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
Diffstat (limited to 'net/ipv6/udp.c')
| -rw-r--r-- | net/ipv6/udp.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c index 7317f8e053f1..ebb95d8bc681 100644 --- a/net/ipv6/udp.c +++ b/net/ipv6/udp.c @@ -750,7 +750,8 @@ int __udp6_lib_err(struct sk_buff *skb, struct inet6_skb_parm *opt, if (type == NDISC_REDIRECT) { if (tunnel) { ip6_redirect(skb, sock_net(sk), inet6_iif(skb), - READ_ONCE(sk->sk_mark), sk->sk_uid); + READ_ONCE(sk->sk_mark), + sk_uid(sk)); } else { ip6_sk_redirect(skb, sk); } @@ -1620,7 +1621,7 @@ do_udp_sendmsg: if (!fl6->flowi6_oif) fl6->flowi6_oif = np->sticky_pktinfo.ipi6_ifindex; - fl6->flowi6_uid = sk->sk_uid; + fl6->flowi6_uid = sk_uid(sk); if (msg->msg_controllen) { opt = &opt_space; |