linux-kernel - Re: [PATCH v6 00/11] Kernel address sanitizer

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Message-ID: <546BBAE2.306@intel.com>
Date:	Tue, 18 Nov 2014 13:32:18 -0800
From:	Dave Hansen <dave.hansen@...el.com>
To:	Andi Kleen <andi@...stfloor.org>,
	Andrew Morton <akpm@...ux-foundation.org>
CC:	Andrey Ryabinin <a.ryabinin@...sung.com>,
	Dmitry Vyukov <dvyukov@...gle.com>,
	Konstantin Serebryany <kcc@...gle.com>,
	Dmitry Chernenkov <dmitryc@...gle.com>,
	Andrey Konovalov <adech.fo@...il.com>,
	Yuri Gribov <tetra2005@...il.com>,
	Konstantin Khlebnikov <koct9i@...il.com>,
	Sasha Levin <sasha.levin@...cle.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>,
	Vegard Nossum <vegard.nossum@...il.com>,
	"H. Peter Anvin" <hpa@...or.com>, x86@...nel.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>,
	Jonathan Corbet <corbet@....net>,
	Joe Perches <joe@...ches.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6 00/11] Kernel address sanitizer - runtime memory debugger.

On 11/18/2014 01:15 PM, Andi Kleen wrote:
>> > If kasan will permit us to remove kmemcheck/debug_pagealloc/slub_debug
>> > then that tips the balance a little.  What's the feasibility of that?
> Maybe removing kmemcheck. slub_debug/debug_pagealloc are simple, and are in
> different niches (lower overhead debugging)

Yeah, slub_debug can be turned on at runtime in production kernels so
it's in a completely different category.
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