linux-kernel - Re: Thinkpad X60: regression with 5.1-rc1 and 5.1-rc4

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Date:   Tue, 9 Apr 2019 18:33:04 +0200
From:   Pavel Machek <pavel@....cz>
To:     Jens Axboe <axboe@...nel.dk>
Cc:     kernel list <linux-kernel@...r.kernel.org>,
        paolo.valente@...aro.org, linux-block@...r.kernel.org,
        rjw@...ysocki.net, lenb@...nel.org, linux-acpi@...r.kernel.org
Subject: Re: Thinkpad X60: regression with 5.1-rc1 and 5.1-rc4

On Mon 2019-04-08 11:41:18, Jens Axboe wrote:
> On 4/8/19 11:39 AM, Pavel Machek wrote:
> > Hi!
> > 
> > For some reason, Thinkpad X60 now crashes during boot. I see some
> > weird backtraces, and it may be bfq related... or maybe ACPI idle.
> > 
> > Does x86-32 work for you?
> > 
> > Weird thing is, 5.1.0-rc3-next-20190408 boots here (but later has
> > problems during resume, making it unusable, too). They may not have
> > 100% same configs.

I now noticed it said:

EIP is in bfq_bfqq_expire

> Can you try and revert:
> 
> 9dee8b3b057e1
> 
> and see if that helps?

Yes, I tried and yes, it helps. What are the next steps? 

									Pavel

-- 
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(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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