diff options
| author | Nicolas Dichtel <nicolas.dichtel@6wind.com> | 2015-05-13 14:19:42 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-05-17 22:43:07 -0400 |
| commit | ed2a80ab7b76f11af0b2c6255709c4ebf164b667 (patch) | |
| tree | 81e17e871cc94d646693470906c7780b904e670e | |
| parent | 07ee0722bf941960fb3888f9c9b5839473372fd1 (diff) | |
| download | op-kernel-dev-ed2a80ab7b76f11af0b2c6255709c4ebf164b667.zip op-kernel-dev-ed2a80ab7b76f11af0b2c6255709c4ebf164b667.tar.gz | |
rtnl/bond: don't send rtnl msg for unregistered iface
Before the patch, the command 'ip link add bond2 type bond mode 802.3ad'
causes the kernel to send a rtnl message for the bond2 interface, with an
ifindex 0.
'ip monitor' shows:
0: bond2: <BROADCAST,MULTICAST,MASTER> mtu 1500 state DOWN group default
link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
9: bond2@NONE: <BROADCAST,MULTICAST,MASTER> mtu 1500 qdisc noop state DOWN group default
link/ether ea:3e:1f:53:92:7b brd ff:ff:ff:ff:ff:ff
[snip]
The patch fixes the spotted bug by checking in bond driver if the interface
is registered before calling the notifier chain.
It also adds a check in rtmsg_ifinfo() to prevent this kind of bug in the
future.
Fixes: d4261e565000 ("bonding: create netlink event when bonding option is changed")
CC: Jiri Pirko <jiri@resnulli.us>
Reported-by: Julien Meunier <julien.meunier@6wind.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/bonding/bond_options.c | 2 | ||||
| -rw-r--r-- | net/core/rtnetlink.c | 3 |
2 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/bonding/bond_options.c b/drivers/net/bonding/bond_options.c index 4df2894..e8d3c1d 100644 --- a/drivers/net/bonding/bond_options.c +++ b/drivers/net/bonding/bond_options.c @@ -624,7 +624,7 @@ int __bond_opt_set(struct bonding *bond, out: if (ret) bond_opt_error_interpret(bond, opt, ret, val); - else + else if (bond->dev->reg_state == NETREG_REGISTERED) call_netdevice_notifiers(NETDEV_CHANGEINFODATA, bond->dev); return ret; diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index 666e092..8de3682 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -2416,6 +2416,9 @@ void rtmsg_ifinfo(int type, struct net_device *dev, unsigned int change, { struct sk_buff *skb; + if (dev->reg_state != NETREG_REGISTERED) + return; + skb = rtmsg_ifinfo_build_skb(type, dev, change, flags); if (skb) rtmsg_ifinfo_send(skb, dev, flags); |
