diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
index feada358d872f3bc5622f5787078fde4cbfa6a97..19f8d5881b08d54aaf259cc393be13f022b74dde 100644
--- a/include/net/sctp/structs.h
+++ b/include/net/sctp/structs.h
@@ -1247,6 +1247,9 @@ struct sctp_ep_common {
 	/* What socket does this endpoint belong to?  */
 	struct sock *sk;
 
+	/* Cache netns and it won't change once set */
+	struct net *net;
+
 	/* This is where we receive inbound chunks.  */
 	struct sctp_inq	  inqueue;
 
diff --git a/net/sctp/associola.c b/net/sctp/associola.c
index 914750b819b2661986a1dca9d0b049a68d020e67..f68ccd1f48609d014b5d1c276475fb2a3f8578c0 100644
--- a/net/sctp/associola.c
+++ b/net/sctp/associola.c
@@ -80,6 +80,7 @@ static struct sctp_association *sctp_association_init(
 	/* Discarding const is appropriate here.  */
 	asoc->ep = (struct sctp_endpoint *)ep;
 	asoc->base.sk = (struct sock *)sk;
+	asoc->base.net = sock_net(sk);
 
 	sctp_endpoint_hold(asoc->ep);
 	sock_hold(asoc->base.sk);
diff --git a/net/sctp/endpointola.c b/net/sctp/endpointola.c
index c99114eaf42e92df5012dc09c499360938ac6d7b..8640dedcf64f19708ddb8715e0d814f8314a01f5 100644
--- a/net/sctp/endpointola.c
+++ b/net/sctp/endpointola.c
@@ -165,6 +165,7 @@ static struct sctp_endpoint *sctp_endpoint_init(struct sctp_endpoint *ep,
 
 	/* Remember who we are attached to.  */
 	ep->base.sk = sk;
+	ep->base.net = sock_net(sk);
 	sock_hold(ep->base.sk);
 
 	return ep;
diff --git a/net/sctp/input.c b/net/sctp/input.c
index 5c36a99882ed1286a3d30fa178ea8acaacf046e1..bfe29158afccb9d2c9998981c617f0ec3b28af73 100644
--- a/net/sctp/input.c
+++ b/net/sctp/input.c
@@ -815,7 +815,7 @@ static inline int sctp_hash_cmp(struct rhashtable_compare_arg *arg,
 	if (!sctp_transport_hold(t))
 		return err;
 
-	if (!net_eq(sock_net(t->asoc->base.sk), x->net))
+	if (!net_eq(t->asoc->base.net, x->net))
 		goto out;
 	if (x->lport != htons(t->asoc->base.bind_addr.port))
 		goto out;
@@ -830,7 +830,7 @@ static inline __u32 sctp_hash_obj(const void *data, u32 len, u32 seed)
 {
 	const struct sctp_transport *t = data;
 	const union sctp_addr *paddr = &t->ipaddr;
-	const struct net *net = sock_net(t->asoc->base.sk);
+	const struct net *net = t->asoc->base.net;
 	__be16 lport = htons(t->asoc->base.bind_addr.port);
 	__u32 addr;