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-rw-r--r--net/core/sock.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/net/core/sock.c b/net/core/sock.c
index 5a51512f638..38820eaecd4 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -420,14 +420,16 @@ static int sock_bindtodevice(struct sock *sk, char __user *optval, int optlen)
420 if (devname[0] == '\0') { 420 if (devname[0] == '\0') {
421 index = 0; 421 index = 0;
422 } else { 422 } else {
423 struct net_device *dev = dev_get_by_name(net, devname); 423 struct net_device *dev;
424 424
425 rcu_read_lock();
426 dev = dev_get_by_name_rcu(net, devname);
427 if (dev)
428 index = dev->ifindex;
429 rcu_read_unlock();
425 ret = -ENODEV; 430 ret = -ENODEV;
426 if (!dev) 431 if (!dev)
427 goto out; 432 goto out;
428
429 index = dev->ifindex;
430 dev_put(dev);
431 } 433 }
432 434
433 lock_sock(sk); 435 lock_sock(sk);