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-rw-r--r--net/llc/af_llc.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/net/llc/af_llc.c b/net/llc/af_llc.c
index 582612998211..dfd3a648a551 100644
--- a/net/llc/af_llc.c
+++ b/net/llc/af_llc.c
@@ -316,9 +316,9 @@ static int llc_ui_bind(struct socket *sock, struct sockaddr *uaddr, int addrlen)
if (unlikely(addr->sllc_family != AF_LLC))
goto out;
rc = -ENODEV;
- rtnl_lock();
+ rcu_read_lock();
if (sk->sk_bound_dev_if) {
- llc->dev = dev_get_by_index(&init_net, sk->sk_bound_dev_if);
+ llc->dev = dev_get_by_index_rcu(&init_net, sk->sk_bound_dev_if);
if (llc->dev) {
if (!addr->sllc_arphrd)
addr->sllc_arphrd = llc->dev->type;
@@ -329,14 +329,15 @@ static int llc_ui_bind(struct socket *sock, struct sockaddr *uaddr, int addrlen)
!llc_mac_match(addr->sllc_mac,
llc->dev->dev_addr)) {
rc = -EINVAL;
- dev_put(llc->dev);
llc->dev = NULL;
}
}
} else
- llc->dev = dev_getbyhwaddr(&init_net, addr->sllc_arphrd,
+ llc->dev = dev_getbyhwaddr_rcu(&init_net, addr->sllc_arphrd,
addr->sllc_mac);
- rtnl_unlock();
+ if (llc->dev)
+ dev_hold(llc->dev);
+ rcu_read_unlock();
if (!llc->dev)
goto out;
if (!addr->sllc_sap) {