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Date: Tue, 16 Feb 2016 10:48:31 -0800
From: Laura Abbott <>
To: Kees Cook <>, Mark Rutland <>
Cc: Jeremy Linton <>,
 Ard Biesheuvel <>,
 "Suzuki K. Poulose" <>,
 Will Deacon <>, Catalin Marinas
 "" <>
Subject: Re: [PATCH] arm64: mm: Mark .rodata as RO

On 2/16/16 10:10 AM, Kees Cook wrote:
> On Fri, Feb 12, 2016 at 10:25 AM, Mark Rutland <> wrote:
>> On Fri, Feb 12, 2016 at 10:13:19AM -0600, Jeremy Linton wrote:
>>> Currently the .rodata section is actually still executable when DEBUG_RODATA
>>> is enabled. This changes that so the .rodata is actually read only, no execute.
>>> Signed-off-by: Jeremy Linton <>
> Yikes, good catch. Is anyone running the lkdtm tests that check these things?

I don't think the current lkdtm test would have caught this since the exec
test is using rw data and not ro data. That test could be expanded though
to include a rodata buffer as well.

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