Subject: Re: [PATCH net v2 4/4] selftests: bonding: add tests for ether type changes

From: Michal Kubiak <[email-masked]>
Date: Tue, 14 Mar 2023 16:04:43 +0100

On Tue, Mar 14, 2023 at 01:14:26PM +0200, Nikolay Aleksandrov wrote:
> Add new network selftests for the bonding device which exercise the ether
> type changing call paths. They also test for the recent syzbot bug[1] which
> causes a warning and results in wrong device flags (IFF_SLAVE missing).
> The test adds three bond devices and a nlmon device, enslaves one of the
> bond devices to the other and then uses the nlmon device for successful
> and unsuccesful enslaves both of which change the bond ether type. Thus
> we can test for both MASTER and SLAVE flags at the same time.
> 
> If the flags are properly restored we get:
> TEST: Change ether type of an enslaved bond device with unsuccessful enslave   [ OK ]
> TEST: Change ether type of an enslaved bond device with successful enslave   [ OK ]
> 
> [1] https://syzkaller.appspot.com/bug?id=391c7b1f6522182899efba27d891f1743e8eb3ef
> 
> Signed-off-by: Nikolay Aleksandrov <[email-masked]>

Reviewed-by: Michal Kubiak <[email-masked]>

Thanks,
Michal