Re: [PATCH] zerocopy NFS updated

Eric W. Biederman
2002-04-13T20:41:12Z

Andi Kleen <ak@suse.de> writes:

> On Sat, Apr 13, 2002 at 01:19:46PM -0600, Eric W. Biederman wrote:
> > Could the garbage from ext3 in writeback mode be considered an
> > information leak? I know that is why most places in the kernel
> > initialize pages to 0. So you don't accidentally see what another
> > user put there.
>
> Yes it could. But then ext2/ffs have the same problem and so far people were
> able to live on with that.

The reason I asked, is the description sounded specific to ext3. Also
with ext3 a supported way to shutdown is to just pull the power on the
machine. And the filesystem comes back to life without a full fsck.

So if this can happen when all you need is to replay the journal, I
have issues with it. If this happens in the case of damaged
filesystem I don't.

Eric