linux-kernel - Re: [PATCH 21/21] TTY: move tty buffers to tty

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Message-ID: <5095A384.5080205@gmail.com>
Date:	Sat, 03 Nov 2012 19:06:44 -0400
From:	Sasha Levin <levinsasha928@...il.com>
To:	Jiri Slaby <jslaby@...e.cz>
CC:	Jiri Slaby <jirislaby@...il.com>, gregkh@...uxfoundation.org,
	alan@...ux.intel.com, linux-kernel@...r.kernel.org,
	Dave Jones <davej@...hat.com>
Subject: Re: [PATCH 21/21] TTY: move tty buffers to tty_port

On 11/03/2012 11:55 AM, Jiri Slaby wrote:
> On 11/03/2012 03:03 AM, Sasha Levin wrote:
>> On 11/02/2012 12:18 PM, Jiri Slaby wrote:
>>> On 11/02/2012 05:07 PM, Sasha Levin wrote:
>>>> On Fri, Nov 2, 2012 at 11:51 AM, Jiri Slaby <jslaby@...e.cz> wrote:
>>>>> On 10/31/2012 04:59 PM, Sasha Levin wrote:
>>>>>> So you probably want a lot more than 100k syscalls, why limit it at
>>>>>> all actually?
>>>>>
>>>>> I unset the limit but I still can't reproduce...
>>>>>
>>>>>> I've attached my .config for the guest kernel as reference.
>>>>>
>>>>> Even using this config does not help to reproduce that.
>>>>>
>>>>> Do you use some special trinity params?
>>>>
>>>> Not really:
>>>>
>>>>     ./trinity -m --quiet --dangerous -l off
>>>
>>> Oh, you run that as root??
>>>
>>>> Can I add something to my kernel to provide more info when it happens?
>>>
>>> Maybe the attached patch can tell us more...
>>>
>>
>> Nope, I see the warnings mentioned before, without the new 'HUH' warnings.
> 
> Actually it does. It is exactly as you wrote some time earlier. The work
> is scheduled after is was cancelled and should not trigger anymore. Or,
> it is scheduled before it is supposed to do. Could you try the attached
> patch and report what happens with that patch?
> 
> PS I can't reproduce by whatever I tried.
> 
> thanks,
> 

Interesting...

[  388.783955] tty is bad=0 ops=          (null)Pid: 6480, comm: kworker/1:2 Tainted: G        W
3.7.0-rc3-next-20121102-sasha-00002-gbb570e0-dirty #111


Thanks,
Sasha
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