netdev - Handling of EAGAIN from BPF verifier

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Message-ID: <CACAyw98VcqAGCaZbBuHixxgtGEnQsrePZJyJCXrRTLgkxEEusQ@mail.gmail.com>
Date:   Mon, 7 Jan 2019 15:07:09 +0000
From:   Lorenz Bauer <lmb@...udflare.com>
To:     Alexei Starovoitov <ast@...nel.org>, netdev@...r.kernel.org,
        Daniel Borkmann <daniel@...earbox.net>
Subject: Handling of EAGAIN from BPF verifier

Hi,

Commit "bpf: check pending signals while verifying programs" makes the
bpf syscall return EAGAIN for BPF_PROG_LOAD. How should user space
react to this? The error sounds like it should retry, but I couldn't
find the corresponding code for this in libbpf.

Best
Lorenz

-- 
Lorenz Bauer  |  Systems Engineer
25 Lavington St., London SE1 0NZ

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