X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=net%2Fbridge%2Fbr_stp_if.c;h=8a7ada8bb947f5129375e549c22af5a5b32c5a99;hb=ab664b93981c79d613aacd0ac1c85cf96cada44a;hp=12045dea276c2ddae68f0d17ad0444eba02b8d02;hpb=ee9a7d2cb0cf1a1498478bc923d911f3d9c910ac;p=firefly-linux-kernel-4.4.55.git

diff --git a/net/bridge/br_stp_if.c b/net/bridge/br_stp_if.c
index 12045dea276c..8a7ada8bb947 100644
--- a/net/bridge/br_stp_if.c
+++ b/net/bridge/br_stp_if.c
@@ -142,7 +142,10 @@ static void br_stp_start(struct net_bridge *br)
 	char *envp[] = { NULL };
 	struct net_bridge_port *p;
 
-	r = call_usermodehelper(BR_STP_PROG, argv, envp, UMH_WAIT_PROC);
+	if (net_eq(dev_net(br->dev), &init_net))
+		r = call_usermodehelper(BR_STP_PROG, argv, envp, UMH_WAIT_PROC);
+	else
+		r = -ENOENT;
 
 	spin_lock_bh(&br->lock);