Message-ID: <4e786e22-f17a-da76-5129-8fef0c7c825a@googlemail.com>
Date:   Mon, 13 Feb 2023 09:14:49 +0000
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Subject: Re: linux-6.2-rc4+ hangs on poweroff/reboot: Bisected
To:     Dave Airlie <airlied@gmail.com>
Cc:     Linux regressions mailing list <regressions@lists.linux.dev>,
        Karol Herbst <kherbst@redhat.com>,
        Ben Skeggs <skeggsb@gmail.com>, bskeggs@redhat.com,
        Lyude Paul <lyude@redhat.com>,
        ML nouveau <nouveau@lists.freedesktop.org>,
        LKML <linux-kernel@vger.kernel.org>,
        ML dri-devel <dri-devel@lists.freedesktop.org>
References: <b64705e3-2e63-a466-f829-f9568b06766a@googlemail.com>
 <b21fa1f6-a71d-5657-8596-ee0be73185ea@leemhuis.info>
 <3ab28896-70e9-6f90-5b97-e5397b06e715@googlemail.com>
 <a163dd7b-c5d1-a07b-a816-7a2dfd3edfd4@leemhuis.info>
 <ab1b0f73-6b4e-8602-2999-b7bec25d92db@googlemail.com>
 <CACAvsv4sOtPjCVnEcKd2RCUqYWxSn5XKyksbS-Bds2qCqyusVw@mail.gmail.com>
 <1cdb84ac-f7a8-66ba-98fc-3db302b49a5a@googlemail.com>
 <dab6eb81-db3f-8fa1-84ad-9b40e209514b@googlemail.com>
 <CACAvsv5iYdF3P8AbyrbYo3zGmYRYhxDWn7WbAR5V9qHpbgBXRA@mail.gmail.com>
 <1632a9ef-2954-c8f0-cdc9-03157c9d8547@googlemail.com>
 <5abbee70-cc84-1528-c3d8-9befd9edd611@googlemail.com>
 <5cf46df8-0fa2-e9f5-aa8e-7f7f703d96dd@googlemail.com>
 <f72fe15b-db1d-56dd-aaf6-3cba68a8bf0a@leemhuis.info>
 <CACO55tvR4ydDOXt=9nbR3n2aFLKrj8zeuGRR_xpezVQBBLrjqg@mail.gmail.com>
 <a6188878-f84c-0fcc-9509-b9d7ab797f4c@leemhuis.info>
 <d031f0a5-8d5e-af51-6db6-11844de3eeba@googlemail.com>
 <CAPM=9tz+wksJTvMi_4Ef7XWezfH0ReN2se189s8Q=obJjHC+Fw@mail.gmail.com>
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From:   Chris Clayton <chris2553@googlemail.com>
In-Reply-To: <CAPM=9tz+wksJTvMi_4Ef7XWezfH0ReN2se189s8Q=obJjHC+Fw@mail.gmail.com>
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On 13/02/2023 02:57, Dave Airlie wrote:
> On Sun, 12 Feb 2023 at 00:43, Chris Clayton <chris2553@googlemail.com> wrote:
>>
>>
>>
>> On 10/02/2023 19:33, Linux regression tracking (Thorsten Leemhuis) wrote:
>>> On 10.02.23 20:01, Karol Herbst wrote:
>>>> On Fri, Feb 10, 2023 at 7:35 PM Linux regression tracking (Thorsten
>>>> Leemhuis) <regressions@leemhuis.info> wrote:
>>>>>
>>>>> On 08.02.23 09:48, Chris Clayton wrote:
>>>>>>
>>>>>> I'm assuming  that we are not going to see a fix for this regression before 6.2 is released.
>>>>>
>>>>> Yeah, looks like it. That's unfortunate, but happens. But there is still
>>>>> time to fix it and there is one thing I wonder:
>>>>>
>>>>> Did any of the nouveau developers look at the netconsole captures Chris
>>>>> posted more than a week ago to check if they somehow help to track down
>>>>> the root of this problem?
>>>>
>>>> I did now and I can't spot anything. I think at this point it would
>>>> make sense to dump the active tasks/threads via sqsrq keys to see if
>>>> any is in a weird state preventing the machine from shutting down.
>>>
>>> Many thx for looking into it!
>>
>> Yes, thanks Karol.
>>
>> Attached is the output from dmesg when this block of code:
>>
>>         /bin/mount /dev/sda7 /mnt/sda7
>>         /bin/mountpoint /proc || /bin/mount /proc
>>         /bin/dmesg -w > /mnt/sda7/sysrq.dmesg.log &
>>         /bin/echo t > /proc/sysrq-trigger
>>         /bin/sleep 1
>>         /bin/sync
>>         /bin/sleep 1
>>         kill $(pidof dmesg)
>>         /bin/umount /mnt/sda7
>>
>> is executed immediately before /sbin/reboot is called as the final step of rebooting my system.
>>
>> I hope this is what you were looking for, but if not, please let me know what you need
> 

Thanks Dave.
> Another ot in the dark, but does nouveau.runpm=0 help at all?
> 
> Dave.