Messages in this thread Patch in this message | | | From | Kuniyuki Iwashima <> | Subject | [PATCH v1 net 13/15] net: Fix a data-race around sysctl_net_busy_read. | Date | Mon, 15 Aug 2022 22:23:45 -0700 |
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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> --- CC: Eliezer Tamir <eliezer.tamir@linux.intel.com> --- net/core/sock.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
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; -- 2.30.2
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