From: Xin Long <[email protected]>
Date: Sun, 22 Apr 2018 19:11:50 +0800
> After Commit 8a8efa22f51b ("bonding: sync netpoll code with bridge"), it
> would set slave_dev npinfo in slave_enable_netpoll when enslaving a dev
> if bond->dev->npinfo was set.
>
> However now slave_dev npinfo is set with bond->dev->npinfo before calling
> slave_enable_netpoll. With slave_dev npinfo set, __netpoll_setup called
> in slave_enable_netpoll will not call slave dev's .ndo_netpoll_setup().
> It causes that the lower dev of this slave dev can't set its npinfo.
>
> One way to reproduce it:
>
> # modprobe bonding
> # brctl addbr br0
> # brctl addif br0 eth1
> # ifconfig bond0 192.168.122.1/24 up
> # ifenslave bond0 eth2
> # systemctl restart netconsole
> # ifenslave bond0 br0
> # ifconfig eth2 down
> # systemctl restart netconsole
>
> The netpoll won't really work.
>
> This patch is to remove that slave_dev npinfo setting in bond_enslave().
>
> Fixes: 8a8efa22f51b ("bonding: sync netpoll code with bridge")
> Signed-off-by: Xin Long <[email protected]>
Applied and queued up for -stable, thanks.
