linux-kernel - Re: [PATCH v3 00/13] Kernel address sanitizer

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Message-ID: <CAJOtW+7UJQ2=66vELbyfXumQ=c9LknRAzXmd6Z6ea7i4oy6FwA@mail.gmail.com>
Date:	Fri, 26 Sep 2014 22:48:00 +0400
From:	Yuri Gribov <tetra2005@...il.com>
To:	Dmitry Vyukov <dvyukov@...gle.com>
Cc:	Andrey Ryabinin <ryabinin.a.a@...il.com>,
	Sasha Levin <sasha.levin@...cle.com>,
	Andrey Ryabinin <a.ryabinin@...sung.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Konstantin Serebryany <kcc@...gle.com>,
	Dmitry Chernenkov <dmitryc@...gle.com>,
	Andrey Konovalov <adech.fo@...il.com>,
	Konstantin Khlebnikov <koct9i@...il.com>,
	Michal Marek <mmarek@...e.cz>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	Christoph Lameter <cl@...ux.com>,
	Pekka Enberg <penberg@...nel.org>,
	David Rientjes <rientjes@...gle.com>,
	Joonsoo Kim <iamjoonsoo.kim@....com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Dave Hansen <dave.hansen@...el.com>,
	Andi Kleen <andi@...stfloor.org>,
	Vegard Nossum <vegard.nossum@...il.com>,
	"H. Peter Anvin" <hpa@...or.com>, linux-kbuild@...r.kernel.org,
	x86@...nel.org, "linux-mm@...ck.org" <linux-mm@...ck.org>,
	Randy Dunlap <rdunlap@...radead.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	Dave Jones <davej@...hat.com>
Subject: Re: [PATCH v3 00/13] Kernel address sanitizer - runtime memory debugger.

On Fri, Sep 26, 2014 at 9:29 PM, Dmitry Vyukov <dvyukov@...gle.com> wrote:
> So in kernel we will need to support all API versions, and the
> following looks like a much simpler way to identify current API
> version:
>> #if __GNUC__ == 5
>> #define ASAN_V4

What about having compiler(s) predefine some __SANITIZE_ADDRESS_ABI__
macro for this? Hacking on __GNUC__ may not work given the zoo of GCC
versions out there (FSF, Linaro, vendor toolchains, etc.)?

-Y
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