linux-kernel - Re: [PATCH] lkdtm: add test for executing .rodata

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Message-ID: <56C63747.819.280B3F5@pageexec.freemail.hu>
Date:	Thu, 18 Feb 2016 22:27:35 +0100
From:	"PaX Team" <pageexec@...email.hu>
To:	Ard Biesheuvel <ard.biesheuvel@...aro.org>
CC:	Laura Abbott <labbott@...hat.com>,
	Kees Cook <keescook@...omium.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Mark Rutland <mark.rutland@....com>,
	Jeremy Linton <jeremy.linton@....com>,
	Arnd Bergmann <arnd@...db.de>,
	"kernel-hardening@...ts.openwall.com" 
	<kernel-hardening@...ts.openwall.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] lkdtm: add test for executing .rodata

On 18 Feb 2016 at 12:34, Ard Biesheuvel wrote:

> However, that does not fix the issue Kees is trying to solve, where a
> .rodata section is emitted with the "x" bit set, which causes the
> linker to complain:
> 
> /tmp/cc50ffWw.s: Assembler messages:
> /tmp/cc50ffWw.s:2: Warning: setting incorrect section attributes for
> .rodata.text

in that case why not use a top-level asm statement to set the section
and its attributes (and compile the file with fno-toplevel-reorder)?