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Re: crash in xfs in current

To: Reinoud Koornstra <reinoudkoornstra@xxxxxxxxx>
Subject: Re: crash in xfs in current
From: Dave Chinner <david@xxxxxxxxxxxxx>
Date: Wed, 22 Jun 2016 11:42:53 +1000
Cc: Eric Sandeen <sandeen@xxxxxxxxxxx>, Christoph Hellwig <hch@xxxxxxxxxxxxx>, Daniel Wagner <wagi@xxxxxxxxx>, viro@xxxxxxxxxxxxxxxxxx, xfs@xxxxxxxxxxx
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <CAAA5faGTL4i3YS_oLxoeetpsEt+q59dmc2L7Kc-b5khzoV0GvA@xxxxxxxxxxxxxx>
References: <48817b4c-26f4-5eb6-8a97-d8fa34fe7f6a@xxxxxxxxx> <20160607134442.GA1803@xxxxxxxxxxxxx> <CAAA5faFWyPDienm2NbHkafZh-RvbjJp6f_zDq62z6rC1d1Vzyw@xxxxxxxxxxxxxx> <CAAA5faGXHJZPWkkxDM-kvHqh--hPhnD1Y8RuaaSmuzgiz=_LDg@xxxxxxxxxxxxxx> <CAAA5faEDdR_L6y9ShhUcermgvjtmzNCzwoYeENjx+8RUEMdwaA@xxxxxxxxxxxxxx> <20160609022238.GY26977@dastard> <CAAA5faGL_Nyu=jW2Vrgr_m7crhnB9BriWWzMAPODbiQATFhS=Q@xxxxxxxxxxxxxx> <00bbe658-a891-3771-ca1d-5661a8b6ab61@xxxxxxxxxxx> <CAAA5faH7RA=_WByj6uh4yVCLgwxkLh88CkrtTOa-qJqdyEDT-A@xxxxxxxxxxxxxx> <CAAA5faGTL4i3YS_oLxoeetpsEt+q59dmc2L7Kc-b5khzoV0GvA@xxxxxxxxxxxxxx>
User-agent: Mutt/1.5.21 (2010-09-15)
On Tue, Jun 14, 2016 at 11:40:23PM -0600, Reinoud Koornstra wrote:
> On Wed, Jun 8, 2016 at 9:42 PM, Reinoud Koornstra
> <reinoudkoornstra@xxxxxxxxx> wrote:
> > On Wed, Jun 8, 2016 at 8:56 PM, Eric Sandeen <sandeen@xxxxxxxxxxx> wrote:
> >> On 6/8/16 9:53 PM, Reinoud Koornstra wrote:
> >>
> >>>> In your Linus git tree:
> >>>>
> >>>> $ git remote add xfsdev git://git.kernel.org/git/dgc/linux-xfs.git
> >>>> $ git remote update
> >>>> $ git checkout -b xfsdev-merge v4.6
> >>>> $ git merge xfsdev/xfs-for-linus-4.7-rc1
> >>>
> >>> Tried to do this:
> >>>
> >>> reinoud@router-dev:~/Downloads/kernel_current$  git remote add xfsdev
> >>> git://git.kernel.org/git/dgc/linux-xfs.git
> >>
> >> I think that should be:
> >>
> >> git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs.git
> >
> > Ok That worked better indeed. :)
> 
> I've tested the way you and Dave described.
> Indeed, I do not see the issues appearing in that xfsdev tree.
> So it works good there.
> For verification, I tried when I was upon this state (so this is a good 
> state):

Ok, that's good to hear. Now for some more testing: Al Viro just
pushed some fixes to the parallel lookup code that may fix this
problem. Al asked this question:

| Can that be triggered on 4e82901 + cherry-pick of e7d6ef979?
| Same for 9f541801 + e7d6ef979?

Those commits are all in the current Linus tree - would you be
able to test them? (i.e. check out tree to 4e82901, then just
cherry pick the single commit (e7d6ef979) on top of that).

Cheers,

Dave.
-- 
Dave Chinner
david@xxxxxxxxxxxxx

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