linux-kernel - Re: [PATCH v2] UBIFS: compute KSA size and store in superblock

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Date:	Thu, 31 May 2012 13:19:35 +0300
From:	Artem Bityutskiy <dedekind1@...il.com>
To:	Joel Reardon <joel@...mbassador.com>
Cc:	linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] UBIFS: compute KSA size and store in superblock

On Thu, 2012-05-31 at 12:12 +0200, Joel Reardon wrote:
> > You need to validate that:
> >
> > 1. if use_ubifsec is true, then ksa_lebs is not zero.
> > 2. ksa_lebs is sane - not too small, not too large.
> >
> 
> Will add an assert and a dbg check function.

Why assert? The point is that if we read the superblock we should check
that it is sane. See teh validate_sb() function. If any of the above 2
checks fail - the superblock is insane and we should refuse mounting.

-- 
Best Regards,
Artem Bityutskiy

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