linux-kernel - Re: [BUG] garbage instead of zeroes in UFS

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Message-Id: <20061220030955.bd3acdbc.akpm@osdl.org>
Date:	Wed, 20 Dec 2006 03:09:55 -0800
From:	Andrew Morton <akpm@...l.org>
To:	"Tomasz Kvarsin" <kvarsin@...il.com>
Cc:	"Alexander Viro" <viro@...iv.linux.org.uk>,
	linux-kernel@...r.kernel.org, Evgeniy Dushistov <dushistov@...l.ru>
Subject: Re: [BUG] garbage instead of zeroes in UFS

On Wed, 20 Dec 2006 14:04:06 +0300
"Tomasz Kvarsin" <kvarsin@...il.com> wrote:

> Forgot to say I use linux-2.6.20-rc1-mm1
> 
> On 12/20/06, Tomasz Kvarsin <kvarsin@...il.com> wrote:
> > I have some problems with write support of UFS.
> > Here is script which demonstrate problem:
> >
> > #create image
> > mkdir /tmp/ufs-expirements && cd /tmp/ufs-expirements/
> > for ((i=0; i<1024*1024*2; ++i)); do printf "z"; done > image
> >
> > #build ufs tools
> > wget 'http://heanet.dl.sourceforge.net/sourceforge/ufs-linux/ufs-tools-0.1.tar.bz2'
> > && tar xjf ufs-tools-0.1.tar.bz2 && cd ufs-tools-0.1
> > wget http://lkml.org/lkml/diff/2006/5/20/48/1 -O build.patch
> > patch -p1 < build.patch && make
> >
> > #create UFS file system on image
> > ./mkufs -O 1 -b 16384 -f 2048 ../image
> > cd .. && mkdir root
> > mount -t ufs image root -o loop,ufstype=44bsd
> > cd root/
> > touch a.txt
> > echo "END" > end.txt
> > dd if=./end.txt of=./a.txt bs=16384 seek=1
> >
> > and at the end content of "a.txt" not only  "END" and zeroes,
> > "a.txt" also contains "z".
> >
> > The real situation happened when I deleted big file,
> > and create new one with holes. This script just easy way to reproduce bug.
> >

Does 2.6.20-rc1 have the same problem?
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