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authorKuniyuki Iwashima <kuniyu@amazon.com>2022-07-13 13:51:55 -0700
committerDavid S. Miller <davem@davemloft.net>2022-07-15 11:49:55 +0100
commit289d3b21fb0bfc94c4e98f10635bba1824e5f83c (patch)
tree5e796fd71b5154ce25a4434c3cc05f2dbe0c82e0 /net/sctp/protocol.c
parent7bf9e18d9a5e99e3c83482973557e9f047b051e7 (diff)
ip: Fix data-races around sysctl_ip_nonlocal_bind.
While reading sysctl_ip_nonlocal_bind, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/protocol.c')
-rw-r--r--net/sctp/protocol.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index 35928fefae33..1a094b087d88 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -358,7 +358,7 @@ static int sctp_v4_available(union sctp_addr *addr, struct sctp_sock *sp)
if (addr->v4.sin_addr.s_addr != htonl(INADDR_ANY) &&
ret != RTN_LOCAL &&
!sp->inet.freebind &&
- !net->ipv4.sysctl_ip_nonlocal_bind)
+ !READ_ONCE(net->ipv4.sysctl_ip_nonlocal_bind))
return 0;
if (ipv6_only_sock(sctp_opt2sk(sp)))