netdev - Re: [PATCH net v1] taprio: Fix allowing too small intervals

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Message-Id: <20200911.172302.1375580850096268505.davem@davemloft.net>
Date:   Fri, 11 Sep 2020 17:23:02 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     vinicius.gomes@...el.com
Cc:     netdev@...r.kernel.org, kuba@...nel.org, jiri@...nulli.us,
        syzbot+8267241609ae8c23b248@...kaller.appspotmail.com
Subject: Re: [PATCH net v1] taprio: Fix allowing too small intervals

From: Vinicius Costa Gomes <vinicius.gomes@...el.com>
Date: Wed,  9 Sep 2020 17:03:11 -0700

> It's possible that the user specifies an interval that couldn't allow
> any packet to be transmitted. This also avoids the issue of the
> hrtimer handler starving the other threads because it's running too
> often.
> 
> The solution is to reject interval sizes that according to the current
> link speed wouldn't allow any packet to be transmitted.
> 
> Reported-by: syzbot+8267241609ae8c23b248@...kaller.appspotmail.com
> Fixes: 5a781ccbd19e ("tc: Add support for configuring the taprio scheduler")
> Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@...el.com>

Applied and queued up for -stable, thanks.