From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jarek Poplawski <jarkao2@gmail.com>
Subject: Re: WARNING at local_bh_enable while tcp_retransmit
Date: Wed, 08 Dec 2010 21:20:31 +0100
Message-ID: <4CFFE88F.3060200@gmail.com>
References: <20101207182308.664e171d.isloginov@gmail.com>	<4CFE9F73.1040203@gmail.com> <20101208123645.84091844.isloginov@gmail.com>
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To: Ilya Loginov <isloginov@gmail.com>
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Ilya Loginov wrote:
> On Tue, 07 Dec 2010 21:56:19 +0100
> Jarek Poplawski <jarkao2@gmail.com> wrote:
> 
>> Hi, isn't any of your drivers disabling irqs on this path?
> 
> No. But we are in soft_irq because tcp_retransmit. So, may be,
> interrupts were really disabled.

Should be easy to check by copying this WARN_ON_ONCE from 
kernel/softirq.c:143 local_bh_enable to the beginning of
your rioth_start_xmit.

Jarek P.