netdev - Re: Calltrace in process

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Message-ID: <CAHA+R7PR88ObqKm2CnrgU7K8MLN5Q51yYZZOO4uw=Ww5eo9zZA@mail.gmail.com>
Date:	Thu, 18 Sep 2014 09:52:03 -0700
From:	Cong Wang <cwang@...pensource.com>
To:	sdrb@...t.eu
Cc:	netdev <netdev@...r.kernel.org>
Subject: Re: Calltrace in process_backlog()

On Thu, Sep 18, 2014 at 2:53 AM,  <sdrb@...t.eu> wrote:

> I know that the this problem occures because there is napi->poll_list freed
> twice. But I cannot find out where in my code is the source
> of the problem. How can I find it?
>
> The system bases on single core ARM.
>
> Any suggestions?

Try to enable some VM debug option, for example if you use SLUB enable
CONFIG_SLUB_DEBUG=y, it should be able to catch double free bug.
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