linux-kernel - Re: Warning and BUG with btrfs and corrupted image

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Message-ID: <20090120092522.GC2576@elf.ucw.cz>
Date:	Tue, 20 Jan 2009 10:34:55 +0100
From:	Pavel Machek <pavel@...e.cz>
To:	Eric Sesterhenn <snakebyte@....de>
Cc:	Chris Mason <chris.mason@...cle.com>, linux-kernel@...r.kernel.org,
	linux-btrfs@...r.kernel.org
Subject: Re: Warning and BUG with btrfs and corrupted image

Hi!

> > > > Thanks for looking at things
> > > > 
> > > > Aside from catching checksumming errors, we're not quite ready for
> > > > fuzzer style attacks.  The code will be hardened for this but it isn't
> > > > yet.
> > > 
> > > Does this mean i should stop trying to break it for now or are you interested
> > > in further reports?
> > 
> > Does ext2/3 and vfat survive that kind of attacks? Those are 'in
> > production' and should survive it...
> 
> I regularly (once or twice a week) test 100 corrupted images of 
> vfat, udf, msdos, swap, iso9660, ext2, ext3, ext4, minix, bfs, befs,
> hfs, hfs+, qnx4, affs and cramfs on each of my two test machines.
> 
> They are all pretty stable, one remaining thing on my list i didnt have
> time to look into was an issue with fat (msdos) triggering a bug in
> buffer.c the other is a warning with ext4 in jbd2/checkpoint.c:166

Good, I did not expect filesystems to be in so good state. Thanks!
								Pavel
-- 
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