Messages in this thread | | | Date | Thu, 10 Apr 2014 07:47:55 -0600 | From | Jens Axboe <> | Subject | Re: [BUG] kernel BUG at /.../block/cfq-iosched.c:3145! |
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On 2014-04-10 00:45, 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.
I'm sure it could manifest itself in a lot of weird ways. I'll send it upstream this morning, so hopefully should be fixed in mainline shortly.
-- Jens Axboe
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