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From: David Ahern <dsahern@gmail.com>
To: Eric Dumazet <eric.dumazet@gmail.com>,
	Yejune Deng <yejune.deng@gmail.com>,
	davem@davemloft.net, yoshfuji@linux-ipv6.org, dsahern@kernel.org,
	kuba@kernel.org
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
	kernel test robot <oliver.sang@intel.com>
Subject: Re: [PATCH] arp: Remove the arp_hh_ops structure
Date: Mon, 22 Feb 2021 09:07:13 -0700	[thread overview]
Message-ID: <8de8cee8-55d3-5748-d17e-08dba3cf778d@gmail.com> (raw)
In-Reply-To: <0143f961-7530-3ae9-27f2-f076ea951975@gmail.com>

On 2/22/21 1:37 AM, Eric Dumazet wrote:
> 
> 
> On 2/22/21 4:15 AM, Yejune Deng wrote:
>> The arp_hh_ops structure is similar to the arp_generic_ops structure.
>> but the latter is more general,so remove the arp_hh_ops structure.
>>
>> Fix when took out the neigh->ops assignment:
>> 8.973653] #PF: supervisor read access in kernel mode
>> [    8.975027] #PF: error_code(0x0000) - not-present page
>> [    8.976310] PGD 0 P4D 0
>> [    8.977036] Oops: 0000 [#1] SMP PTI
>> [    8.977973] CPU: 1 PID: 210 Comm: sd-resolve Not tainted 5.11.0-rc7-02046-g4591591ab715 #1
>> [    8.979998] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
>> [    8.981996] RIP: 0010:neigh_probe (kbuild/src/consumer/net/core/neighbour.c:1009)
>>
> 
> I have a hard time understanding this patch submission.
> 
> This seems a mix of a net-next and net material ?

It is net-next at best.

> 
> 
> 
>> Reported-by: kernel test robot <oliver.sang@intel.com>
> 
> If this is a bug fix, we want a Fixes: tag
> 
> This will really help us. Please don't let us guess what is going on.
> 

This patch is a v2. v1 was clearly wrong and not tested; I responded as
such 12 hours before the robot test.

  reply	other threads:[~2021-02-22 16:11 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-22  3:15 Yejune Deng
2021-02-22  8:37 ` Eric Dumazet
2021-02-22 16:07   ` David Ahern [this message]
2021-02-23  7:00     ` Yejune Deng
  -- strict thread matches above, loose matches on Subject: below --
2021-02-20  4:32 Yejune Deng
2021-02-21  1:54 ` David Ahern
2021-02-21  2:20   ` Yejune Deng

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