linux-kernel - Re: 4.13 on thinkpad x220: oops when writing to SD card

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Date:   Fri, 8 Sep 2017 11:29:53 +0200
From:   Pavel Machek <pavel@....cz>
To:     6689241f-a4d8-7a3e-9f0b-482b034e5710@...el.com
Cc:     adrian.hunter@...el.com, shawn.lin@...k-chips.com,
        linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: 4.13 on thinkpad x220: oops when writing to SD card

On Wed 2017-09-06 10:20:35, Seraphime Kirkovski wrote:
> Hi,
> 
> > > Seems 4.13-rc4 was already broken for that but unfortuantely
> > > I didn't
> > > reproduce that. So maybe Seraphime can do git-bisect as he said "I 
> > > get
> > > it everytime" for which I assume it could be easy for him to find 
> > > out
> > > the problematic commit?
> 
> I can reliably reproduce it, although sometimes it needs some more work.
> For example, I couldn't trigger it while writing less than 1 gigabyte
> and sometimes I have to do it more than once. It helps if the machine is
> doing something else in meantime, I do kernel builds.
> 
> > Another unrelated issue with mmc_init_request() is that
> > mmc_exit_request()
> > is not called if mmc_init_request() fails, which means 
> > mmc_init_request()
> > must free anything it allocates when it fails.
> 
> I'm running your patch for 45 minutes now, it looks like it's fixing the 
> issue on 4.13 81a84ad3cb5711cec79.
> 
> P.S. Sorry about the formatting, have to fix my editor

Thanks for quick testing :-). And your formatting is still better than
some...


									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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