netdev - Re: [PATCH bpf-next] bpf: cpumap: fix possible rcpu kthread hung

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Message-ID: <871rl5xj6a.fsf@cloudflare.com>
Date:   Tue, 21 Jul 2020 12:21:33 +0200
From:   Jakub Sitnicki <jakub@...udflare.com>
To:     David Ahern <dsahern@...il.com>
Cc:     Lorenzo Bianconi <lorenzo@...nel.org>, netdev@...r.kernel.org,
        bpf@...r.kernel.org, davem@...emloft.net, ast@...nel.org,
        brouer@...hat.com, daniel@...earbox.net,
        lorenzo.bianconi@...hat.com, kuba@...nel.org
Subject: Re: [PATCH bpf-next] bpf: cpumap: fix possible rcpu kthread hung

On Mon, Jul 20, 2020 at 05:45 PM CEST, David Ahern wrote:
> On 7/20/20 3:14 AM, Jakub Sitnicki wrote:
>> I realize it's a code move, but fd == 0 is a valid descriptor number.
>
> this follows the decision made for devmap entries in that fd == 0 is NOT
> a valid program fd.

Surprising. Thanks for clarifying.