netdev - Re: Linux 4.12+ memory leak on router with i40e NICs

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Date:   Tue, 17 Oct 2017 01:34:29 +0200
From:   Paweł Staszewski <pstaszewski@...are.pl>
To:     Pavlos Parissis <pavlos.parissis@...il.com>,
        Alexander Duyck <alexander.duyck@...il.com>
Cc:     "Anders K. Pedersen | Cohaesio" <akp@...aesio.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "intel-wired-lan@...ts.osuosl.org" <intel-wired-lan@...ts.osuosl.org>,
        "alexander.h.duyck@...el.com" <alexander.h.duyck@...el.com>
Subject: Re: Linux 4.12+ memory leak on router with i40e NICs



W dniu 2017-10-16 o 18:26, Paweł Staszewski pisze:
>
>
> W dniu 2017-10-16 o 13:20, Pavlos Parissis pisze:
>> On 15/10/2017 02:58 πμ, Alexander Duyck wrote:
>>> Hi Pawel,
>>>
>>> To clarify is that Dave Miller's tree or Linus's that you are talking
>>> about? If it is Dave's tree how long ago was it you pulled it since I
>>> think the fix was just pushed by Jeff Kirsher a few days ago.
>>>
>>> The issue should be fixed in the following commit:
>>> https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/drivers/net/ethernet/intel/i40e/i40e_txrx.c?id=2b9478ffc550f17c6cd8c69057234e91150f5972 
>>>
>>>
>>
>> Do you know when it is going to be available on net-next and 
>> linux-stable repos?
>>
>> Cheers,
>> Pavlos
>>
>>
> I will make some tests today night with "net" git tree where this 
> patch is included.
> Starting from 0:00 CET
> :)
>
>
Upgraded and looks like problem is not solved with that patch
Currently running system with
https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/
kernel

Still about 0.5GB of memory is leaking somewhere

Also can confirm that the latest kernel where memory is not leaking 
(with use i40e driver intel 710 cards) is 4.11.12
With kernel 4.11.12 - after hour no change in memory usage.

also checked that with ixgbe instead of i40e with same  net.git kernel 
there is no memleak - after hour same memory usage - so for 100% this is 
i40e driver problem.