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

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Date:   Mon, 20 Jul 2020 09:45:29 -0600
From:   David Ahern <dsahern@...il.com>
To:     Jakub Sitnicki <jakub@...udflare.com>,
        Lorenzo Bianconi <lorenzo@...nel.org>
Cc:     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 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.