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Date: Wed, 6 Apr 2016 14:27:38 -0700
From: Kees Cook <>
To: Linus Torvalds <>
Cc: Emrah Demir <>, Linux Kernel Mailing List <>, 
	Dan Rosenberg <>, 
	"" <>, Dave Jones <>
Subject: Re: [PATCH] KERNEL: resource: Fix bug on leakage in /proc/iomem file

On Wed, Apr 6, 2016 at 2:19 PM, Linus Torvalds
<> wrote:
> On Wed, Apr 6, 2016 at 10:54 AM, Linus Torvalds
> <> wrote:
>> So I'd find a patch like the attached to be perfectly acceptable (in
>> fact, we should have done this long ago).
> I just committed it, let's see if some odd program uses the iomem
> data. I doubt it, and I always enjoy improvements that remove more
> lines of code than they add.

Hrm, okay. I still think just changing the perms would be less
troublesome. Knowing where the kernel is in physical memory when
debugging physical memory issues seems important to me. But, I have
never actually used it since I prefer looking in kallsyms. :)


Kees Cook
Chrome OS & Brillo Security

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