Re: [BUG] kernel BUG at /.../block/cfq-iosched.c:3145!

[Jens Axboe]

On 04/10/2014 12:45 AM, Benjamin Herrenschmidt wrote:
> On Wed, 2014-04-09 at 21:52 -0600, Jens Axboe wrote:
> > On 2014-04-09 21:35, Benjamin Herrenschmidt wrote:
> > > On Wed, 2014-04-09 at 20:25 -0600, Jens Axboe wrote:
> > > > On 2014-04-09 19:36, Benjamin Herrenschmidt wrote:
> > > > > On Wed, 2014-04-09 at 19:31 -0600, Jens Axboe wrote:
> > > > > > OK, I think we're seeing different symptoms of the same bug. Stay
> > > > > > tuned, will have something for you to test shortly, I hope.
> > > > >
> > > > > Ah thanks. I'll defer the bisection then (it's painful on that machine
> > > > > for various reasons....)
> > > >
> > > > Can you try with these two patches applied?
> > >
> > > Booted to login prompt once ... and twice. Much better ! :-)
> >
> > Excellent! I was hoping it was the same bug :-)
> > I'll amend the commit and add your tested-by.
>
> A colleague was complaining of yet another oddball block related crash
> today on another machine when doing rsync's with upstream (this machine
> booted fine but crashed later on, but then it has less CPUs... maybe
> that's relevant) and these patches fixed it too.

Pull request is now in, jfyi.

--
Jens Axboe

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