netdev - Re: [PATCH v7 00/11] Stop monitoring disabled devices

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Date:   Wed, 1 Jul 2020 12:23:29 +0200
From:   Andrzej Pietrasiewicz <andrzej.p@...labora.com>
To:     Daniel Lezcano <daniel.lezcano@...aro.org>,
        linux-pm@...r.kernel.org, linux-acpi@...r.kernel.org,
        netdev@...r.kernel.org, linux-wireless@...r.kernel.org,
        platform-driver-x86@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-renesas-soc@...r.kernel.org,
        linux-rockchip@...ts.infradead.org
Cc:     "Rafael J . Wysocki" <rjw@...ysocki.net>,
        Len Brown <lenb@...nel.org>,
        Vishal Kulkarni <vishal@...lsio.com>,
        "David S . Miller" <davem@...emloft.net>,
        Jiri Pirko <jiri@...lanox.com>,
        Ido Schimmel <idosch@...lanox.com>,
        Johannes Berg <johannes.berg@...el.com>,
        Emmanuel Grumbach <emmanuel.grumbach@...el.com>,
        Luca Coelho <luciano.coelho@...el.com>,
        Intel Linux Wireless <linuxwifi@...el.com>,
        Kalle Valo <kvalo@...eaurora.org>,
        Peter Kaestle <peter@...e.net>,
        Darren Hart <dvhart@...radead.org>,
        Andy Shevchenko <andy@...radead.org>,
        Sebastian Reichel <sre@...nel.org>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Amit Kucheria <amit.kucheria@...durent.com>,
        Support Opensource <support.opensource@...semi.com>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Niklas Söderlund <niklas.soderlund@...natech.se>,
        Heiko Stuebner <heiko@...ech.de>,
        Orson Zhai <orsonzhai@...il.com>,
        Baolin Wang <baolin.wang7@...il.com>,
        Chunyan Zhang <zhang.lyra@...il.com>,
        Zhang Rui <rui.zhang@...el.com>,
        Allison Randal <allison@...utok.net>,
        Enrico Weigelt <info@...ux.net>,
        Gayatri Kammela <gayatri.kammela@...el.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        kernel@...labora.com
Subject: Re: [PATCH v7 00/11] Stop monitoring disabled devices

Hi,

W dniu 30.06.2020 o 20:33, Daniel Lezcano pisze:
> On 30/06/2020 18:56, Andrzej Pietrasiewicz wrote:
>> Hi,
>>
>> W dniu 30.06.2020 o 17:53, Daniel Lezcano pisze:
>>> On 30/06/2020 17:29, Andrzej Pietrasiewicz wrote:
>>>> Hi Daniel,
>>>>
>>>> W dniu 30.06.2020 o 16:53, Daniel Lezcano pisze:
>>>>> On 30/06/2020 15:43, Andrzej Pietrasiewicz wrote:
>>>>>> Hi Daniel,
>>>>>>
>>>>>> I am reading the logs and can't find anything specific to thermal.
>>>>>>
>>>>>> What I can see is
>>>>>>
>>>>>> "random: crng init done"
>>>>>>
>>>>>> with large times (~200s) and then e.g.
>>>>>>
>>>>>> 'auto-login-action timed out after 283 seconds'
>>>>>>
>>>>>> I'm looking at e.g.
>>>>>> https://storage.kernelci.org/thermal/testing/v5.8-rc3-11-gf5e50bf4d3ef/arm/multi_v7_defconfig/gcc-8/lab-baylibre/baseline-imx6q-sabrelite.html
>>>>>>
>>>>>>
>>>>>>
>>>>
>>>> f5e50bf4d3ef is PATCH 11/11. Does the problem happen at PATCH 1-10/11?
>>>> PATCH 11/11 renames a method and the code compiles, so it seems
>>>> unlikely that this is causing problems. One should never say never,
>>>> though ;)
>>>
>>> The sha1 is just the HEAD for the kernel reference. The regression
>>> happens with your series, somewhere.
>>>
>>>> The reported failure is not due to some test failing but rather due
>>>> to timeout logging into the test system. Could it be that there is
>>>> some other problem?
>>>
>>> I did reproduce:
>>>
>>> v5.8-rc3 + series => imx6 hang at boot time
>>> v5.8-rc3 => imx6 boots correctly
>>>

What did you reproduce? Timeout logging in to the test system or a "real" 
failure of a test?

>>
>> I kindly ask for a bisect.
> 
> I will give a try but it is a very long process as the board is running
> on kernelci.
> 
> I was not able to reproduce it on imx7 despite it is the same sensor :/
> 
> 

Could it be that the thermal sensors somehow contribute to entropy and after
the series is applied on some machines it takes more time to gather enough
entropy?

Andrzej