linux-kernel - Re: RTNL: assertion failed at net/ipv6/addrconf.c (1699)

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Message-ID: <CAHA+R7N6ZApvDi+JPW+2V98Rfm==jv1ES7xB0pzMDZx=q53rkA@mail.gmail.com>
Date:	Tue, 2 Sep 2014 11:37:08 -0700
From:	Cong Wang <cwang@...pensource.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	Hannes Frederic Sowa <hannes@...essinduktion.org>,
	Sabrina Dubroca <sd@...asysnail.net>,
	Tommi Rantala <tt.rantala@...il.com>,
	"David S. Miller" <davem@...emloft.net>,
	Alexey Kuznetsov <kuznet@....inr.ac.ru>,
	James Morris <jmorris@...ei.org>,
	Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
	Patrick McHardy <kaber@...sh.net>,
	netdev <netdev@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>, trinity@...r.kernel.org,
	Dave Jones <davej@...hat.com>
Subject: Re: RTNL: assertion failed at net/ipv6/addrconf.c (1699)

On Tue, Sep 2, 2014 at 11:21 AM, Eric Dumazet <eric.dumazet@...il.com> wrote:
> On Tue, 2014-09-02 at 11:15 -0700, Cong Wang wrote:
>
>> That is what we do when backporting patches, I can do that if David asks
>> me to backport it, but you know for netdev that is David's work.
>>
>> (I am not saying I don't want to help him, I just want to point out the fact.
>> I am very pleased to help David for stable backports as long as he asks)
>
> Problem is : your patch submission do not identify bug origin.
>
> You claim you want to help, but you do not provide the basic thing that
> _really_ helps.
>
> The proper way to identify bug origin is to add in the headers one
> line :
>
> Fixes: 12-digit-SHA1 ("patch title")
>

Since when "Fixes:" tag becomes mandatory for a stable patch?
At least netdev-FAQ is not updated. ;-) I 100% agree "Fixes:"
is helpful when backporting patches, but it is not mandatory currently.

For this patch, I was too lazy to dig the history, it looks like this is
caused by the following commit:

commit c15b1ccadb323ea50023e8f1cca2954129a62b51
Author: Hannes Frederic Sowa <hannes@...essinduktion.org>
Date:   Thu Mar 27 18:28:07 2014 +0100

    ipv6: move DAD and addrconf_verify processing to workqueue

Thanks.
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