linux-kernel - Re: [PATCH v3] console: use first console if stdout-path device doesn't appear

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Message-ID: <190a8a8f-228c-6992-393f-70afb3523810@lwfinger.net>
Date:   Mon, 7 Nov 2016 12:27:32 -0600
From:   Larry Finger <Larry.Finger@...inger.net>
To:     Paul Burton <paul.burton@...tec.com>
Cc:     Michael Ellerman <mpe@...erman.id.au>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Andreas Schwab <schwab@...ux-m68k.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Borislav Petkov <bp@...e.de>, Petr Mladek <pmladek@...e.com>,
        Tejun Heo <tj@...nel.org>, linux-kernel@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH v3] console: use first console if stdout-path device
 doesn't appear

On 11/07/2016 11:21 AM, Paul Burton wrote:
> Hi Larry,
>
> On Monday, 7 November 2016 09:26:37 GMT Larry Finger wrote:
>>> A revert was already submitted by Hans de Goede & is being discussed over
>>> here:
>>>
>>> https://marc.info/?l=linux-kernel&m=147826151427455&w=2
>>
>> I am a little surprised that I was not CCd on that thread.
>
> Hans started that thread without copying you just as you started your thread
> without copying Andreas, who reported issues first.

My searching had failed to find his report.

>> To reiterate, my
>> PowerBook G4 with a PPC32 processor CRASHES on boot. That is a lot more
>> serious than the console output disappearing.
>
> Crashes as in init dies due to lack of a console, right?

It gets a kernel panic because of an attempt to kill process 1 (init). It then 
waits 120 seconds and tries to reboot.

>> As it seems unlikely that this regression will be fixed in the current
>> cycle, I recommend that the reversion of commit 05fd007e4629 until a proper
>> fix is available.
>
> I agree that reverting is probably the best option for now, and have replied
> with that in the other thread too.

Good.

Larry