diff options
author | Jiri Pirko <jiri@resnulli.us> | 2015-03-04 08:36:31 +0100 |
---|---|---|
committer | Jiri Slaby <jslaby@suse.cz> | 2015-03-12 10:06:29 +0100 |
commit | c272044a55e2df31b31952149f71294615d7e1c3 (patch) | |
tree | 1bb89088e253d31611616286de1b252c49b07844 | |
parent | 7a763ff1bb18190791d0823996ba0a039268d2cf (diff) |
team: don't traverse port list using rcu in team_set_mac_address
[ Upstream commit 9215f437b85da339a7dfe3db6e288637406f88b2 ]
Currently the list is traversed using rcu variant. That is not correct
since dev_set_mac_address can be called which eventually calls
rtmsg_ifinfo_build_skb and there, skb allocation can sleep. So fix this
by remove the rcu usage here.
Fixes: 3d249d4ca7 "net: introduce ethernet teaming device"
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
-rw-r--r-- | drivers/net/team/team.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c index b99f9198c916..020581ddfdd3 100644 --- a/drivers/net/team/team.c +++ b/drivers/net/team/team.c @@ -1716,11 +1716,11 @@ static int team_set_mac_address(struct net_device *dev, void *p) if (dev->type == ARPHRD_ETHER && !is_valid_ether_addr(addr->sa_data)) return -EADDRNOTAVAIL; memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); - rcu_read_lock(); - list_for_each_entry_rcu(port, &team->port_list, list) + mutex_lock(&team->lock); + list_for_each_entry(port, &team->port_list, list) if (team->ops.port_change_dev_addr) team->ops.port_change_dev_addr(team, port); - rcu_read_unlock(); + mutex_unlock(&team->lock); return 0; } |