Commit b57e1fff authored by David S. Miller's avatar David S. Miller
Browse files

Merge branch 'vlan-rtnetlink-newlink-fixes' 



Eric Dumazet says:

====================
vlan: rtnetlink newlink fixes

First patch fixes a potential memory leak found by syzbot

Second patch makes vlan_changelink() aware of errors
and report them to user.
====================

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parents 96b11e93 eb8ef2a3

net/8021q/vlan.h

+1 −0
Original line number Diff line number Diff line
@@ -126,6 +126,7 @@ int vlan_check_real_dev(struct net_device *real_dev, 
void vlan_setup(struct net_device *dev);

int register_vlan_dev(struct net_device *dev, struct netlink_ext_ack *extack);

void unregister_vlan_dev(struct net_device *dev, struct list_head *head);

void vlan_dev_uninit(struct net_device *dev);

bool vlan_dev_inherit_address(struct net_device *dev,

			      struct net_device *real_dev);

net/8021q/vlan_dev.c

+2 −1
Original line number Diff line number Diff line
@@ -586,7 +586,8 @@ static int vlan_dev_init(struct net_device *dev) 
	return 0;

}



static void vlan_dev_uninit(struct net_device *dev)

/* Note: this function might be called multiple times for the same device. */

void vlan_dev_uninit(struct net_device *dev)

{

	struct vlan_priority_tci_mapping *pm;

	struct vlan_dev_priv *vlan = vlan_dev_priv(dev);

net/8021q/vlan_netlink.c

+12 −7
Original line number Diff line number Diff line
@@ -108,11 +108,13 @@ static int vlan_changelink(struct net_device *dev, struct nlattr *tb[], 
	struct ifla_vlan_flags *flags;

	struct ifla_vlan_qos_mapping *m;

	struct nlattr *attr;

	int rem;

	int rem, err;



	if (data[IFLA_VLAN_FLAGS]) {

		flags = nla_data(data[IFLA_VLAN_FLAGS]);

		vlan_dev_change_flags(dev, flags->flags, flags->mask);

		err = vlan_dev_change_flags(dev, flags->flags, flags->mask);

		if (err)

			return err;

	}

	if (data[IFLA_VLAN_INGRESS_QOS]) {

		nla_for_each_nested(attr, data[IFLA_VLAN_INGRESS_QOS], rem) {
@@ -123,7 +125,9 @@ static int vlan_changelink(struct net_device *dev, struct nlattr *tb[], 
	if (data[IFLA_VLAN_EGRESS_QOS]) {

		nla_for_each_nested(attr, data[IFLA_VLAN_EGRESS_QOS], rem) {

			m = nla_data(attr);

			vlan_dev_set_egress_priority(dev, m->from, m->to);

			err = vlan_dev_set_egress_priority(dev, m->from, m->to);

			if (err)

				return err;

		}

	}

	return 0;
@@ -179,10 +183,11 @@ static int vlan_newlink(struct net *src_net, struct net_device *dev, 
		return -EINVAL;



	err = vlan_changelink(dev, tb, data, extack);

	if (err < 0)

	if (!err)

		err = register_vlan_dev(dev, extack);

	if (err)

		vlan_dev_uninit(dev);

	return err;



	return register_vlan_dev(dev, extack);

}



static inline size_t vlan_qos_map_size(unsigned int n)

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