diff options
| author |   Kuniyuki Iwashima <kuniyu@amazon.com> | 2022-08-23 10:46:52 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2022-08-24 13:46:58 +0100 |
| commit | e59ef36f0795696ab229569c153936bfd068d21c (patch) | |
| tree | da6e3945bf04821fd96942826e5d04c2144640f6 | |
| parent | net: Fix a data-race around sysctl_net_busy_poll. (diff) | |
| download | linux-dev-e59ef36f0795696ab229569c153936bfd068d21c.tar.xz linux-dev-e59ef36f0795696ab229569c153936bfd068d21c.zip | |
net: Fix a data-race around sysctl_net_busy_read.
While reading sysctl_net_busy_read, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its reader.
Fixes: 2d48d67fa8cd ("net: poll/select low latency socket support")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/core/sock.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/core/sock.c b/net/core/sock.c index 95abf4604d88..788c1372663c 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -3367,7 +3367,7 @@ void sock_init_data(struct socket *sock, struct sock *sk) #ifdef CONFIG_NET_RX_BUSY_POLL sk->sk_napi_id = 0; - sk->sk_ll_usec = sysctl_net_busy_read; + sk->sk_ll_usec = READ_ONCE(sysctl_net_busy_read); #endif sk->sk_max_pacing_rate = ~0UL; |