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Subject: Re: R8169: Network lockups in 4.18.{8,9,10} (and 4.19 dev)
To:     "Maciej S. Szmigiero" <mail@maciej.szmigiero.name>
Cc:     "David S. Miller" <davem@davemloft.net>,
        Azat Khuzhin <a3at.mail@gmail.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Heiner Kallweit <hkallweit1@gmail.com>,
        Realtek linux nic maintainers <nic_swsd@realtek.com>,
        linux-kernel <linux-kernel@vger.kernel.org>
References: <54d8d7e9-a80d-dc2b-5628-22f9dc14e2ee@maciej.szmigiero.name>
From:   Chris Clayton <chris2553@googlemail.com>
Message-ID: <535f42c7-6c3b-8e5a-49de-5dc975879b21@googlemail.com>
Date:   Fri, 28 Sep 2018 23:00:52 +0100
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Thanks Maciej.

On 28/09/2018 16:54, Maciej S. Szmigiero wrote:
> Hi,
> 
>> Hi,
>>
>> I upgraded my kernel to 4.18.10 recently and have since been experiencing network problems after resuming from a
>> suspend to RAM or disk. I previously had 4.18.6 and that was OK.
>>
>> The pattern of the problem is that when I first boot, the network is fine. But, after resume from suspend I find that
>> the time taken for a ping of one of my ISP's nameservers increases from 14-15ms to more than 1000ms. Moreover, when I
>> open a browser (chromium or firefox), it fails to retrieve my home page (https://www.google.co.uk) and pings of the
>> nameserver fail with the message "Destination Host Unreachable". Often, I can revive the network by stopping it with
>> /sbin/if(down,up} but sometimes it is necessary to also remove the r8169 module and load it again.
> 
> Please have a look at the following thread:
> https://lkml.org/lkml/2018/9/25/1118
> 

I applied your patch for the 4.18 stable kernels to 4.18.10, but the problem is not solved by it. Similarly, I applied
Heiner's patch to the 4.19, but again the problem is not solved.

> Maciej
> 
Chris