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Message-ID: <4143845.Jr27FPv8XS@wuerfel>
Date: Wed, 17 Feb 2016 22:44:12 +0100
From: Arnd Bergmann <arnd@...db.de>
To: Kees Cook <keescook@...omium.org>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Laura Abbott <laura@...bott.name>, Mark Rutland <mark.rutland@....com>, Jeremy Linton <jeremy.linton@....com>, Ard Biesheuvel <ard.biesheuvel@...aro.org>, kernel-hardening@...ts.openwall.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] lkdtm: add test for executing .rodata
On Tuesday 16 February 2016 13:49:04 Kees Cook wrote:
> }
>
> +static void __attribute__((__section__(".rodata,\"a\",@progbits#")))
> +do_nothing_rodata(void)
> +{
> + return;
> +}
> +
> static void do_nothing(void)
> {
>
I think this also needs to be marked "noinline" to ensure that the
function does not get eliminated. I've seen clang do that on
execute_location() recently and submitted a patch for that.
Arnd
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