[PATCH v2 4/5] ipvs: Lock socket before setting SK_CAN_REUSE

[Quentin Armitage]

When other settings are changed in the socket it is locked, so
lock the socket before setting SK_CAN_REUSE.

Signed-off-by: Quentin Armitage <quentin@xxxxxxxxxxxxxxx>
---
 net/netfilter/ipvs/ip_vs_sync.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/net/netfilter/ipvs/ip_vs_sync.c b/net/netfilter/ipvs/ip_vs_sync.c
index 0ca937a..734335a 100644
--- a/net/netfilter/ipvs/ip_vs_sync.c
+++ b/net/netfilter/ipvs/ip_vs_sync.c
@@ -1539,7 +1539,9 @@ static struct socket *make_receive_sock(struct netns_ipvs *ipvs, int id, int ifi
 	}
 
 	/* it is equivalent to the REUSEADDR option in user-space */
+	lock_sock(sock->sk);
 	sock->sk->sk_reuse = SK_CAN_REUSE;
+	release_sock(sock->sk);
 	result = sysctl_sync_sock_size(ipvs);
 	if (result > 0)
 		set_sock_size(sock->sk, 0, result);
-- 
1.7.7.6