linux-kernel - Re: [Squashfs-devel] PROBLEM: mount empty SquashFS

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Date:	Sun, 09 Sep 2012 19:17:47 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:	Phillip Lougher <phillip@...gher.demon.co.uk>,
	Cyril Strejc <strejc@...controls.cz>, phillip@...ashfs.org.uk,
	squashfs-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Subject: Re: [Squashfs-devel] PROBLEM: mount empty SquashFS

On Tue, 2012-09-04 at 20:52 +0200, Geert Uytterhoeven wrote:
> Hi Phillip,
> 
> On Wed, Aug 1, 2012 at 6:25 AM, Phillip Lougher
> <phillip@...gher.demon.co.uk> wrote:
[...]
> > I discovered the sanity checks mistakenly flagged empty filesystems
> > as invalid in January, and added a fix to the mainline kernel, FYI
> > the commit is here:
> >
> > http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=cc37f75a9ffbbfcb1c3297534f293c8284e3c5a6
[...]
> I can easily imagine a system that has an optional filesystem mounted,
> which may be empty. For such a system, it's a regression.
> 
> So I think this warrants application to the stable 3.0, 3.1, and 3.2 branches.
> Commit cc37f75a9ffbbfcb1c3297534f293c8284e3c5a6 ("Squashfs: fix
> mount time sanity check for corrupted superblock") seems to cherry-pick just
> fine on v3.0.42, v3.1.10, and v3.2.28.
[...]

I've queued this up for 3.2, thanks.

Ben.

-- 
Ben Hutchings
Time is nature's way of making sure that everything doesn't happen at once.

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