mirros/rockchip-kernel
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

net: annotate lockless accesses to sk->sk_max_ack_backlog

Browse Source 
sk->sk_max_ack_backlog can be read without any lock being held
at least in TCP/DCCP cases.

We need to use READ_ONCE()/WRITE_ONCE() to avoid load/store tearing
and/or potential KCSAN warnings.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet
2019-11-05 14:11:54 -08:00
committed by David S. Miller
parent 288efe8606
commit 099ecf59f0
9 changed files with 10 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
net/sctp/diag.c
View File

@@ -426,7 +426,7 @@ static void sctp_diag_get_info(struct sock *sk, struct inet_diag_msg *r,
r->idiag_wqueue = infox->asoc->sndbuf_used;
} else {
r->idiag_rqueue = READ_ONCE(sk->sk_ack_backlog);
r->idiag_wqueue = sk->sk_max_ack_backlog;
r->idiag_wqueue = READ_ONCE(sk->sk_max_ack_backlog);
}
if (infox->sctpinfo)
sctp_get_sctp_info(sk, infox->asoc, infox->sctpinfo);