From: Nicolas Dichtel <[email protected]>
Date: Wed, 13 May 2015 14:19:42 +0200
> 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 <[email protected]>
> Reported-by: Julien Meunier <[email protected]>
> Signed-off-by: Nicolas Dichtel <[email protected]>
Applied and queued up for -stable, thanks Nicolas.
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