1 files changed, 5 insertions, 0 deletions

diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index 7f555179bf81..f34d9de802ab 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -699,6 +699,11 @@ static ssize_t __write_ports_addfd(char *buf, struct net *net)
         if (err != 0 || fd < 0)
                 return -EINVAL;
 
+        if (svc_alien_sock(net, fd)) {
+                printk(KERN_ERR "%s: socket net is different to NFSd's one\n", __func__);
+                return -EINVAL;
+        }
+
         err = nfsd_create_serv(net);
         if (err != 0)
                 return err;