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

[David Ahern]

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.