4 files changed, 25 insertions, 23 deletions

diff --git a/net/core/dev.c b/net/core/dev.c
index 84a0d9542fe9..1baab07820f6 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -8981,6 +8981,12 @@ static int bpf_xdp_link_update(struct bpf_link *link, struct bpf_prog *new_prog,
 		goto out_unlock;
 	}
 	old_prog = link->prog;
+	if (old_prog->type != new_prog->type ||
+	    old_prog->expected_attach_type != new_prog->expected_attach_type) {
+		err = -EINVAL;
+		goto out_unlock;
+	}
+
 	if (old_prog == new_prog) {
 		/* no-op, don't disturb drivers */
 		bpf_prog_put(new_prog);
diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index 9b7171c40434..a5b5bb99c644 100644
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -164,8 +164,10 @@ static void ops_exit_list(const struct pernet_operations *ops,
 {
 	struct net *net;
 	if (ops->exit) {
-		list_for_each_entry(net, net_exit_list, exit_list)
+		list_for_each_entry(net, net_exit_list, exit_list) {
 			ops->exit(net);
+			cond_resched();
+		}
 	}
 	if (ops->exit_batch)
 		ops->exit_batch(net_exit_list);
diff --git a/net/core/of_net.c b/net/core/of_net.c
index 95a64c813ae5..f1a9bf7578e7 100644
--- a/net/core/of_net.c
+++ b/net/core/of_net.c
@@ -61,7 +61,7 @@ static int of_get_mac_addr_nvmem(struct device_node *np, u8 *addr)
 {
 	struct platform_device *pdev = of_find_device_by_node(np);
 	struct nvmem_cell *cell;
-	const void *buf;
+	const void *mac;
 	size_t len;
 	int ret;
 
@@ -78,32 +78,21 @@ static int of_get_mac_addr_nvmem(struct device_node *np, u8 *addr)
 	if (IS_ERR(cell))
 		return PTR_ERR(cell);
 
-	buf = nvmem_cell_read(cell, &len);
+	mac = nvmem_cell_read(cell, &len);
 	nvmem_cell_put(cell);
 
-	if (IS_ERR(buf))
-		return PTR_ERR(buf);
-
-	ret = 0;
-	if (len == ETH_ALEN) {
-		if (is_valid_ether_addr(buf))
-			memcpy(addr, buf, ETH_ALEN);
-		else
-			ret = -EINVAL;
-	} else if (len == 3 * ETH_ALEN - 1) {
-		u8 mac[ETH_ALEN];
-
-		if (mac_pton(buf, mac))
-			memcpy(addr, mac, ETH_ALEN);
-		else
-			ret = -EINVAL;
-	} else {
-		ret = -EINVAL;
+	if (IS_ERR(mac))
+		return PTR_ERR(mac);
+
+	if (len != ETH_ALEN || !is_valid_ether_addr(mac)) {
+		kfree(mac);
+		return -EINVAL;
 	}
 
-	kfree(buf);
+	memcpy(addr, mac, ETH_ALEN);
+	kfree(mac);
 
-	return ret;
+	return 0;
 }
 
 /**
diff --git a/net/core/sock.c b/net/core/sock.c
index e21485ab285d..4ff806d71921 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -844,6 +844,8 @@ static int sock_timestamping_bind_phc(struct sock *sk, int phc_index)
 	}
 
 	num = ethtool_get_phc_vclocks(dev, &vclock_index);
+	dev_put(dev);
+
 	for (i = 0; i < num; i++) {
 		if (*(vclock_index + i) == phc_index) {
 			match = true;
@@ -2047,6 +2049,9 @@ void sk_destruct(struct sock *sk)
 {
 	bool use_call_rcu = sock_flag(sk, SOCK_RCU_FREE);
 
+	WARN_ON_ONCE(!llist_empty(&sk->defer_list));
+	sk_defer_free_flush(sk);
+
 	if (rcu_access_pointer(sk->sk_reuseport_cb)) {
 		reuseport_detach_sock(sk);
 		use_call_rcu = true;