netdev - Re: bond: take rcu lock in netpoll_send_skb_on

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Message-ID: <CAM_iQpUjdPuM3mH-j94gTga3v4Ts=DdKOiCoG2wQct-tiZaOaQ@mail.gmail.com>
Date:   Wed, 17 Oct 2018 22:46:11 -0700
From:   Cong Wang <xiyou.wangcong@...il.com>
To:     eranbe@...lanox.com
Cc:     Dave Jones <davej@...emonkey.org.uk>,
        Linux Kernel Network Developers <netdev@...r.kernel.org>,
        Tariq Toukan <tariqt@...lanox.com>,
        Saeed Mahameed <saeedm@...lanox.com>
Subject: Re: bond: take rcu lock in netpoll_send_skb_on_dev

On Mon, Oct 15, 2018 at 4:36 AM Eran Ben Elisha <eranbe@...lanox.com> wrote:
> Hi,
>
> This suggested fix introduced a regression while using netconsole module
> with mlx5_core module loaded.

It is already reported here:
https://marc.info/?l=linux-kernel&m=153917359528669&w=2


>
> During irq handling, we hit a warning that this rcu_read_lock_bh cannot
> be taken inside an IRQ.

Yes, I mentioned the same even before this patch was sent out:
https://marc.info/?l=linux-netdev&m=153816136624679&w=2

Thanks.