linux-kernel - Re: [net] 6922110d15: suspend-stress.fail

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Date:   Tue, 7 Jun 2022 17:47:30 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     kernel test robot <oliver.sang@...el.com>
Cc:     Willy Tarreau <w@....eu>, Heiner Kallweit <hkallweit1@...il.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Florian Fainelli <f.fainelli@...il.com>,
        LKML <linux-kernel@...r.kernel.org>, netdev@...r.kernel.org,
        lkp@...ts.01.org, lkp@...el.com, rui.zhang@...el.com,
        yu.c.chen@...el.com
Subject: Re: [net]  6922110d15: suspend-stress.fail

On Sun, 5 Jun 2022 22:39:35 +0800 kernel test robot wrote:
> Greeting,
> 
> FYI, we noticed the following commit (built with gcc-11):
> 
> commit: 6922110d152e56d7569616b45a1f02876cf3eb9f ("net: linkwatch: fix failure to restore device state across suspend/resume")
> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
> 
> in testcase: suspend-stress
> version: 
> with following parameters:
> 
> 	mode: freeze
> 	iterations: 10
> 
> 
> 
> on test machine: 4 threads Ivy Bridge with 4G memory
> 
> caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
> 
> 
> 
> 
> If you fix the issue, kindly add following tag
> Reported-by: kernel test robot <oliver.sang@...el.com>
> 
> 
> Suspend to freeze 1/10:
> Done
> Suspend to freeze 2/10:
> network not ready
> network not ready
> network not ready
> network not ready
> network not ready
> network not ready
> network not ready
> network not ready
> network not ready
> network not ready
> network not ready
> Done

What's the failure? I'm looking at this script:

https://github.com/intel/lkp-tests/blob/master/tests/suspend-stress

And it seems that we are not actually hitting any "exit 1" paths here.