From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755575AbcBHHrM (ORCPT ); Mon, 8 Feb 2016 02:47:12 -0500 Received: from mx2.parallels.com ([199.115.105.18]:52782 "EHLO mx2.parallels.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753925AbcBHHrL (ORCPT ); Mon, 8 Feb 2016 02:47:11 -0500 Subject: Re: [PATCH] ubsan: cosmetic fix to Kconfig text To: Yang Shi References: <1454717113-5094-1-git-send-email-yang.shi@linaro.org> CC: , , Andrew Morton From: Andrey Ryabinin Message-ID: <56B84841.7060904@virtuozzo.com> Date: Mon, 8 Feb 2016 10:48:17 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.5.0 MIME-Version: 1.0 In-Reply-To: <1454717113-5094-1-git-send-email-yang.shi@linaro.org> Content-Type: text/plain; charset="windows-1252" Content-Transfer-Encoding: 7bit X-ClientProxiedBy: US-EXCH.sw.swsoft.com (10.255.249.47) To US-EXCH.sw.swsoft.com (10.255.249.47) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 02/06/2016 03:05 AM, Yang Shi wrote: > When enabling UBSAN_SANITIZE_ALL, the kernel image size gets increased > significantly (~3x). So, it sounds better to have some note in Kconfig. > > And, fixed a typo. > > Signed-off-by: Yang Shi > --- Acked-by: Andrey Ryabinin > lib/Kconfig.ubsan | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/lib/Kconfig.ubsan b/lib/Kconfig.ubsan > index 49518fb..e07c1ba 100644 > --- a/lib/Kconfig.ubsan > +++ b/lib/Kconfig.ubsan > @@ -18,6 +18,8 @@ config UBSAN_SANITIZE_ALL > This option activates instrumentation for the entire kernel. > If you don't enable this option, you have to explicitly specify > UBSAN_SANITIZE := y for the files/directories you want to check for UB. > + Enabling this option will get kernel image size increased > + significantly. > > config UBSAN_ALIGNMENT > bool "Enable checking of pointers alignment" > @@ -25,5 +27,5 @@ config UBSAN_ALIGNMENT > default y if !HAVE_EFFICIENT_UNALIGNED_ACCESS > help > This option enables detection of unaligned memory accesses. > - Enabling this option on architectures that support unalligned > + Enabling this option on architectures that support unaligned > accesses may produce a lot of false positives. >