netdev - Re: [PATCH net-next 0/2] net: ipv4: fix circular-list infinite loop

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Date:   Mon, 1 Jul 2019 07:21:55 +0000
From:   Tariq Toukan <tariqt@...lanox.com>
To:     Ran Rozenstein <ranro@...lanox.com>,
        David Miller <davem@...emloft.net>,
        "fw@...len.de" <fw@...len.de>
CC:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Maor Gottlieb <maorg@...lanox.com>
Subject: Re: [PATCH net-next 0/2] net: ipv4: fix circular-list infinite loop



On 7/1/2019 9:46 AM, Ran Rozenstein wrote:
> 
> 
>> -----Original Message-----
>> From: Tariq Toukan
>> Sent: Sunday, June 30, 2019 10:57
>> To: David Miller <davem@...emloft.net>; fw@...len.de
>> Cc: netdev@...r.kernel.org; Ran Rozenstein <ranro@...lanox.com>; Tariq
>> Toukan <tariqt@...lanox.com>
>> Subject: Re: [PATCH net-next 0/2] net: ipv4: fix circular-list infinite loop
>>
>>
>>
>> On 6/27/2019 7:54 PM, David Miller wrote:
>>> From: Florian Westphal <fw@...len.de>
>>> Date: Thu, 27 Jun 2019 14:03:31 +0200
>>>
>>>> Tariq and Ran reported a regression caused by net-next commit
>>>> 2638eb8b50cf ("net: ipv4: provide __rcu annotation for ifa_list").
>>>>
>>>> This happens when net.ipv4.conf.$dev.promote_secondaries sysctl is
>>>> enabled -- we can arrange for ifa->next to point at ifa, so next
>>>> process that tries to walk the list loops forever.
>>>>
>>>> Fix this and extend rtnetlink.sh with a small test case for this.
>>>
>>> Series applied, thanks Florian.
>>>
>>
>> Thanks Florian!
>>
>> Ran, please test and update.
>>
>> Tariq
> 
> Thanks Florian.
> Didn't reproduce tonight with the fixes.
> 
> Ran.
> 

Sounds good!

Thanks,
Tariq