4 files changed, 25 insertions, 18 deletions
diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index 369b41894527..3f79db1b612a 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -1190,6 +1190,8 @@ static noinline_for_stack int ethtool_flash_device(struct net_device *dev,
 	if (!dev->ethtool_ops->flash_device)
 		return -EOPNOTSUPP;
 
+	efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0;
+
 	return dev->ethtool_ops->flash_device(dev, &efl);
 }
 
diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index aefcd7acbffa..0e950fda9a0a 100644
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -30,6 +30,20 @@ EXPORT_SYMBOL(init_net);
 
 #define INITIAL_NET_GEN_PTRS	13 /* +1 for len +2 for rcu_head */
 
+static unsigned int max_gen_ptrs = INITIAL_NET_GEN_PTRS;
+
+static struct net_generic *net_alloc_generic(void)
+{
+	struct net_generic *ng;
+	size_t generic_size = offsetof(struct net_generic, ptr[max_gen_ptrs]);
+
+	ng = kzalloc(generic_size, GFP_KERNEL);
+	if (ng)
+		ng->len = max_gen_ptrs;
+
+	return ng;
+}
+
 static int net_assign_generic(struct net *net, int id, void *data)
 {
 	struct net_generic *ng, *old_ng;
@@ -43,8 +57,7 @@ static int net_assign_generic(struct net *net, int id, void *data)
 	if (old_ng->len >= id)
 		goto assign;
 
-	ng = kzalloc(sizeof(struct net_generic) +
-			id * sizeof(void *), GFP_KERNEL);
+	ng = net_alloc_generic();
 	if (ng == NULL)
 		return -ENOMEM;
 
@@ -59,7 +72,6 @@ static int net_assign_generic(struct net *net, int id, void *data)
 	 * the old copy for kfree after a grace period.
 	 */
 
-	ng->len = id;
 	memcpy(&ng->ptr, &old_ng->ptr, old_ng->len * sizeof(void*));
 
 	rcu_assign_pointer(net->gen, ng);
@@ -161,18 +173,6 @@ out_undo:
 	goto out;
 }
 
-static struct net_generic *net_alloc_generic(void)
-{
-	struct net_generic *ng;
-	size_t generic_size = sizeof(struct net_generic) +
-		INITIAL_NET_GEN_PTRS * sizeof(void *);
-
-	ng = kzalloc(generic_size, GFP_KERNEL);
-	if (ng)
-		ng->len = INITIAL_NET_GEN_PTRS;
-
-	return ng;
-}
 
 #ifdef CONFIG_NET_NS
 static struct kmem_cache *net_cachep;
@@ -483,6 +483,7 @@ again:
 			}
 			return error;
 		}
+		max_gen_ptrs = max_t(unsigned int, max_gen_ptrs, *ops->id);
 	}
 	error = __register_pernet_operations(list, ops);
 	if (error) {
diff --git a/net/core/netprio_cgroup.c b/net/core/netprio_cgroup.c
index 3a9fd4826b75..9ae183a9a381 100644
--- a/net/core/netprio_cgroup.c
+++ b/net/core/netprio_cgroup.c
@@ -58,11 +58,12 @@ static int get_prioidx(u32 *prio)
 
 	spin_lock_irqsave(&prioidx_map_lock, flags);
 	prioidx = find_first_zero_bit(prioidx_map, sizeof(unsigned long) * PRIOIDX_SZ);
+	if (prioidx == sizeof(unsigned long) * PRIOIDX_SZ) {
+		spin_unlock_irqrestore(&prioidx_map_lock, flags);
+		return -ENOSPC;
+	}
 	set_bit(prioidx, prioidx_map);
 	spin_unlock_irqrestore(&prioidx_map_lock, flags);
-	if (prioidx == sizeof(unsigned long) * PRIOIDX_SZ)
-		return -ENOSPC;
-
 	atomic_set(&max_prioidx, prioidx);
 	*prio = prioidx;
 	return 0;
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index f16444bc6cbb..65aebd450027 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -1509,6 +1509,9 @@ errout:
 
 	if (send_addr_notify)
 		call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
+	min_ifinfo_dump_size = max_t(u16, if_nlmsg_size(dev),
+				     min_ifinfo_dump_size);
+
 	return err;
 }