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Date: Thu, 30 Aug 2018 22:36:42 -0700
From: Christoph Hellwig <hch@infradead.org>
To: Ernesto =?iso-8859-1?Q?A=2E_Fern=E1ndez?=
        <ernesto.mnd.fernandez@gmail.com>
Cc: linux-fsdevel@vger.kernel.org,
        Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH 1/6] hfsplus: prevent btree data loss on root split
Message-ID: <20180831053642.GA29605@infradead.org>
References: <26d882184fc43043a810114258f45277752186c7.1535682461.git.ernesto.mnd.fernandez@gmail.com>
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On Fri, Aug 31, 2018 at 12:58:19AM -0300, Ernesto A. Fern�ndez wrote:
> Creating, renaming or deleting a file may cause catalog corruption and
> data loss.  This bug is randomly triggered by xfstests generic/027, but
> here is a faster reproducer:
> 
>   truncate -s 50M fs.iso
>   mkfs.hfsplus fs.iso
>   mount fs.iso /mnt
>   i=100
>   while [ $i -le 150 ]; do
>     touch /mnt/$i &>/dev/null
>     ((++i))
>   done
>   i=100
>   while [ $i -le 150 ]; do
>     mv /mnt/$i /mnt/$(perl -e "print $i x82") &>/dev/null
>     ((++i))
>   done
>   umount /mnt
>   fsck.hfsplus -n fs.iso

It would be good to wire up this short reproducer as well for xfstests.