netdev - Re: [PATCH v2 bpf-next] bpf: test_bpf: add init_net to dev for flow

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Date:   Thu, 27 Sep 2018 12:42:45 -0400
From:   Willem de Bruijn <willemdebruijn.kernel@...il.com>
To:     Eric Dumazet <eric.dumazet@...il.com>
Cc:     songliubraving@...com,
        Network Development <netdev@...r.kernel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Kernel Team <kernel-team@...com>,
        Willem de Bruijn <willemb@...gle.com>,
        Petar Penkov <ppenkov@...gle.com>
Subject: Re: [PATCH v2 bpf-next] bpf: test_bpf: add init_net to dev for flow_dissector

On Thu, Sep 27, 2018 at 12:40 PM Eric Dumazet <eric.dumazet@...il.com> wrote:
>
>
>
> On 09/27/2018 09:34 AM, Song Liu wrote:
> > Latest changes in __skb_flow_dissect() assume skb->dev has valid nd_net.
> > However, this is not true for test_bpf. As a result, test_bpf.ko crashes
> > the system with the following stack trace:
> >
> > This patch fixes tes_bpf by using init_net in the dummy dev.
> >
> > Fixes: d58e468b1112 ("flow_dissector: implements flow dissector BPF hook")
> > Reported-by: Eric Dumazet <edumazet@...gle.com>
> > Cc: Willem de Bruijn <willemb@...gle.com>
> > Cc: Petar Penkov <ppenkov@...gle.com>
> > Signed-off-by: Song Liu <songliubraving@...com>
> > ---
>
> Reviewed-by: Eric Dumazet <edumazet@...gle.com>

Acked-by: Willem de Bruijn <willemb@...gle.com>

Thanks!