diff options
| author | Eric Dumazet <edumazet@google.com> | 2023-08-19 06:06:46 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-08-21 08:41:57 +0200 |
| commit | bc1fb82ae11753c5dec53c667a055dc37796dbd2 (patch) | |
| tree | bc3c0b2eb87f188a8542759a0970754c6f4ad8e8 /net/smc | |
| parent | IPv4: add extack info for IPv4 address add/delete (diff) | |
| download | linux-bc1fb82ae11753c5dec53c667a055dc37796dbd2.tar.xz linux-bc1fb82ae11753c5dec53c667a055dc37796dbd2.zip | |
net: annotate data-races around sk->sk_lingertime
sk_getsockopt() runs locklessly. This means sk->sk_lingertime
can be read while other threads are changing its value.
Other reads also happen without socket lock being held,
and must be annotated.
Remove preprocessor logic using BITS_PER_LONG, compilers
are smart enough to figure this by themselves.
v2: fixed a clang W=1 (-Wtautological-constant-out-of-range-compare) warning
(Jakub)
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/smc')
| -rw-r--r-- | net/smc/af_smc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c index c4f664fb2bcb..bacdd971615e 100644 --- a/net/smc/af_smc.c +++ b/net/smc/af_smc.c @@ -1840,7 +1840,7 @@ void smc_close_non_accepted(struct sock *sk) lock_sock(sk); if (!sk->sk_lingertime) /* wait for peer closing */ - sk->sk_lingertime = SMC_MAX_STREAM_WAIT_TIMEOUT; + WRITE_ONCE(sk->sk_lingertime, SMC_MAX_STREAM_WAIT_TIMEOUT); __smc_release(smc); release_sock(sk); sock_put(sk); /* sock_hold above */ |