linux-kernel - Re: [PATCH] MIPS VPE support module: don't deref potentially null pbuffer and don't do pointless null check before vfree

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Date:	Mon, 8 Nov 2010 22:44:04 +0000
From:	Ralf Baechle <ralf@...ux-mips.org>
To:	Jesper Juhl <jj@...osbits.net>
Cc:	linux-mips@...ux-mips.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] MIPS VPE support module: don't deref potentially null
 pbuffer and don't do pointless null check before vfree

On Sun, Nov 07, 2010 at 07:48:25PM +0100, Jesper Juhl wrote:

> I've taken a second look. I still have no way at all to test this, so 
> please take a close look before potentially applying it, but how does this 
> look to you?

Testing is a little tricky - it requires a MIPS 34K processor in a
configuration with more than one VPE.

> Don't dereference pbuffer before ttesting it for null.
> Don't do pointless check of pointer passed to vfree for null as vfree does 
> this itself.

I've already checked in something based on your first patch with the
other changes I suggested added.

Thanks!

  Ralf
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