Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933695AbbLVUG6 (ORCPT ); Tue, 22 Dec 2015 15:06:58 -0500 Received: from mail-yk0-f175.google.com ([209.85.160.175]:35814 "EHLO mail-yk0-f175.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933666AbbLVUG4 (ORCPT ); Tue, 22 Dec 2015 15:06:56 -0500 MIME-Version: 1.0 In-Reply-To: References: <1450755641-7856-1-git-send-email-laura@labbott.name> <1450755641-7856-7-git-send-email-laura@labbott.name> <56798D8F.9090402@labbott.name> Date: Tue, 22 Dec 2015 21:06:55 +0100 Message-ID: Subject: Re: [kernel-hardening] [RFC][PATCH 6/7] mm: Add Kconfig option for slab sanitization From: Mathias Krause To: Christoph Lameter Cc: Laura Abbott , kernel-hardening@lists.openwall.com, Pekka Enberg , David Rientjes , Joonsoo Kim , Andrew Morton , linux-mm@kvack.org, "linux-kernel@vger.kernel.org" , Kees Cook Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 874 Lines: 21 On 22 December 2015 at 21:01, Christoph Lameter wrote: > On Tue, 22 Dec 2015, Mathias Krause wrote: > >> How many systems, do you think, are running with enabled DEBUG_SLAB / >> SLUB_DEBUG in production? Not so many, I'd guess. And the ones running >> into issues probably just disable DEBUG_SLAB / SLUB_DEBUG. > > All systems run with SLUB_DEBUG in production. SLUB_DEBUG causes the code > for debugging to be compiled in. Then it can be enabled later with a > command line parameter. Indeed, I meant CONFIG_SLUB_DEBUG_ON, i.e. compiled in and enabled SLAB cache debugging including poisoning. Regards, Mathias -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/