Re: [PATCH 4/4] xfs: fuzz every field of every structure and test kernel crashes

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On Thu, Jun 28, 2018 at 11:10:27AM +0800, Eryu Guan wrote:
> On Thu, Jun 21, 2018 at 11:32:55AM -0700, Darrick J. Wong wrote:
> > From: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
> > 
> > Fuzz every field of every structure and then try to write the
> > filesystem, to see how many of these writes can crash the kernel.
> > 
> > Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
> 
> Almost all the tests here are failing in similar ways with v4.18-rc1
> kernel and latest xfsprogs from for-next branch, e.g. xfs/1423 fails as
> 
>     +re-repair failed (1) with diskdq.magic = zeroes.
>     +re-repair failed (1) with diskdq.magic = ones.
>     +re-repair failed (1) with diskdq.magic = firstbit.
>     +re-repair failed (1) with diskdq.magic = middlebit.
> 
> Seems like we should skip re-repair in the "none" repair mode too in
> __scratch_xfs_fuzz_field_test?

Makes sense, will fix & resubmit.

--D

> 
> Thanks,
> Eryu
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