diff options
| author | Eric Dumazet <[email protected]> | 2023-07-19 21:28:56 +0000 |
|---|---|---|
| committer | Jakub Kicinski <[email protected]> | 2023-07-20 19:34:18 +0000 |
| commit | 26023e91e12c68669db416b97234328a03d8e499 (patch) | |
| tree | 347237ef21eb0c921bbba69377f7345de10a5e27 /net/ipv4/tcp.c | |
| parent | tcp: annotate data-races around tp->notsent_lowat (diff) | |
| download | kernel-26023e91e12c68669db416b97234328a03d8e499.tar.gz kernel-26023e91e12c68669db416b97234328a03d8e499.zip | |
tcp: annotate data-races around icsk->icsk_user_timeout
This field can be read locklessly from do_tcp_getsockopt()
Fixes: dca43c75e7e5 ("tcp: Add TCP_USER_TIMEOUT socket option.")
Signed-off-by: Eric Dumazet <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
Diffstat (limited to 'net/ipv4/tcp.c')
| -rw-r--r-- | net/ipv4/tcp.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index 2b2241e9b492..3e137e9a18f5 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -3300,7 +3300,7 @@ EXPORT_SYMBOL(tcp_sock_set_syncnt); void tcp_sock_set_user_timeout(struct sock *sk, u32 val) { lock_sock(sk); - inet_csk(sk)->icsk_user_timeout = val; + WRITE_ONCE(inet_csk(sk)->icsk_user_timeout, val); release_sock(sk); } EXPORT_SYMBOL(tcp_sock_set_user_timeout); @@ -3620,7 +3620,7 @@ int do_tcp_setsockopt(struct sock *sk, int level, int optname, if (val < 0) err = -EINVAL; else - icsk->icsk_user_timeout = val; + WRITE_ONCE(icsk->icsk_user_timeout, val); break; case TCP_FASTOPEN: @@ -4141,7 +4141,7 @@ int do_tcp_getsockopt(struct sock *sk, int level, break; case TCP_USER_TIMEOUT: - val = icsk->icsk_user_timeout; + val = READ_ONCE(icsk->icsk_user_timeout); break; case TCP_FASTOPEN: |