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Subject: Re: 4.20-rc1 looks broken for UML
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From: Anton Ivanov <anton.ivanov@kot-begemot.co.uk>
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Date: Tue, 6 Nov 2018 15:07:17 +0000
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Cc: gregkh@linuxfoundation.org, ldr709@gmail.com

Resend - got Greg's address wrong and missed the commit author. Apologies.

On 11/6/18 3:00 PM, Anton Ivanov wrote:
>
> On 11/5/18 10:07 PM, Richard Weinberger wrote:
>> Anton,
>>
>> Am Montag, 5. November 2018, 16:22:36 CET schrieb Anton Ivanov:
>>> This looks like something specific to ttys - the io there gets
>>> corruption and/or hangs.
>>>
>>> I cannot reproduce it when I ssh in.
>>>
>>> It does not look like it is the new write IRQ bugfix - that works fine
>>> over 4.19.
>>>
>>> Still debugging...
>> Hmm, I don't see this with my Debian userspace.
>> What exactly is your setup/config?
>
>
> Gotcha.
>
> 8ebfe885c65ec82a0b1e955cf99ed62664e84414 is the guilty party.
>
> With it, I get tty corruption on UML. Any attempt to push a large 
> amount of data via the console results in spurious echoes or even a hang.
>
> Reverting it fixes things.
>
> Cc-ing Greg - it was merged from his tree.
>
> I will try to figure out what exactly is wrong with it in the 
> meantime. On first reading it looked OK.
>
> A
>
>
>> Thanks,
>> //richard
>>
>>
>>
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