3 files changed, 28 insertions, 16 deletions
diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index 3469f5053c79..145cb343c1b0 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -1815,11 +1815,15 @@ static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
 	WARN_ON_ONCE(!ret);
 
 	gstrings.len = ret;
-	data = vzalloc(gstrings.len * ETH_GSTRING_LEN);
-	if (gstrings.len && !data)
-		return -ENOMEM;
+	if (gstrings.len) {
+		data = vzalloc(gstrings.len * ETH_GSTRING_LEN);
+		if (!data)
+			return -ENOMEM;
 
-	__ethtool_get_strings(dev, gstrings.string_set, data);
+		__ethtool_get_strings(dev, gstrings.string_set, data);
+	} else {
+		data = NULL;
+	}
 
 	ret = -EFAULT;
 	if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
@@ -1915,11 +1919,14 @@ static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
 		return -EFAULT;
 
 	stats.n_stats = n_stats;
-	data = vzalloc(n_stats * sizeof(u64));
-	if (n_stats && !data)
-		return -ENOMEM;
-
-	ops->get_ethtool_stats(dev, &stats, data);
+	if (n_stats) {
+		data = vzalloc(n_stats * sizeof(u64));
+		if (!data)
+			return -ENOMEM;
+		ops->get_ethtool_stats(dev, &stats, data);
+	} else {
+		data = NULL;
+	}
 
 	ret = -EFAULT;
 	if (copy_to_user(useraddr, &stats, sizeof(stats)))
@@ -1955,13 +1962,17 @@ static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr)
 		return -EFAULT;
 
 	stats.n_stats = n_stats;
-	data = vzalloc(n_stats * sizeof(u64));
-	if (n_stats && !data)
-		return -ENOMEM;
+	if (n_stats) {
+		data = vzalloc(n_stats * sizeof(u64));
+		if (!data)
+			return -ENOMEM;
 
-	mutex_lock(&phydev->lock);
-	phydev->drv->get_stats(phydev, &stats, data);
-	mutex_unlock(&phydev->lock);
+		mutex_lock(&phydev->lock);
+		phydev->drv->get_stats(phydev, &stats, data);
+		mutex_unlock(&phydev->lock);
+	} else {
+		data = NULL;
+	}
 
 	ret = -EFAULT;
 	if (copy_to_user(useraddr, &stats, sizeof(stats)))
diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index 0dd6359e5924..60b88718b1d4 100644
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -285,6 +285,7 @@ static __net_init int setup_net(struct net *net, struct user_namespace *user_ns)
 
 	atomic_set(&net->count, 1);
 	refcount_set(&net->passive, 1);
+	get_random_bytes(&net->hash_mix, sizeof(u32));
 	net->dev_base_seq = 1;
 	net->user_ns = user_ns;
 	idr_init(&net->netns_ids);
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 383f401b4dc5..30c6a4011a6f 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -3823,7 +3823,7 @@ int skb_gro_receive(struct sk_buff **head, struct sk_buff *skb)
 	struct sk_buff *lp, *p = *head;
 	unsigned int delta_truesize;
 
-	if (unlikely(p->len + len >= 65536))
+	if (unlikely(p->len + len >= 65536 || NAPI_GRO_CB(skb)->flush))
 		return -E2BIG;
 
 	lp = NAPI_GRO_CB(p)->last;