net: Use rtnl_lock_killable() in register_netdev()

This patch adds rtnl_lock_killable() to one of hot path
using rtnl_lock().

Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/core/dev.c b/net/core/dev.c
index 12a9aad..d8887cc 100644 (file)
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -8018,7 +8018,8 @@ int register_netdev(struct net_device *dev)
 {
        int err;
 
-       rtnl_lock();
+       if (rtnl_lock_killable())
+               return -EINTR;
        err = register_netdevice(dev);
        rtnl_unlock();
        return err;