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Date: Wed, 26 Oct 2016 12:30:18 -0400
From: Dave Jones <davej@codemonkey.org.uk>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Chris Mason <clm@fb.com>, Andy Lutomirski <luto@amacapital.net>,
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        Linux Kernel <linux-kernel@vger.kernel.org>,
        Dave Chinner <david@fromorbit.com>
Subject: Re: bio linked list corruption.
Message-ID: <20161026163018.wx57yy554576s6e2@codemonkey.org.uk>
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On Tue, Oct 25, 2016 at 06:39:03PM -0700, Linus Torvalds wrote:
 > On Tue, Oct 25, 2016 at 6:33 PM, Linus Torvalds
 > <torvalds@linux-foundation.org> wrote:
 > >
 > > Completely untested. Maybe there's some reason we can't write to the
 > > whole thing like that?
 > 
 > That hack boots and seems to work for me, but doesn't show anything.
 > 
 > Dave, mind just trying that oneliner?

I gave this a go last thing last night. It crashed within 5 minutes,
but it was one we've already seen (the bad page map trace) with nothing
additional that looked interesting.  I rebooted, and tried again and
went to bed.

12 hours later, it's still doing it's thing.

Heisenbugs man, literally the worst.

	Dave