From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B4B5FC76188 for ; Mon, 22 Jul 2019 12:27:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 881E320665 for ; Mon, 22 Jul 2019 12:27:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729375AbfGVM1d (ORCPT ); Mon, 22 Jul 2019 08:27:33 -0400 Received: from relay.sw.ru ([185.231.240.75]:41674 "EHLO relay.sw.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728569AbfGVM1c (ORCPT ); Mon, 22 Jul 2019 08:27:32 -0400 Received: from [172.16.25.12] by relay.sw.ru with esmtp (Exim 4.92) (envelope-from ) id 1hpXPd-0001ls-PZ; Mon, 22 Jul 2019 15:27:29 +0300 Subject: Re: [PATCH] [v2] kasan: remove clang version check for KASAN_STACK To: Arnd Bergmann , Andrew Morton Cc: Qian Cai , Mark Brown , Andrey Konovalov , Vasily Gorbik , linux-kernel@vger.kernel.org, clang-built-linux@googlegroups.com References: <20190719200347.2596375-1-arnd@arndb.de> From: Andrey Ryabinin Message-ID: Date: Mon, 22 Jul 2019 15:27:32 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <20190719200347.2596375-1-arnd@arndb.de> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 7/19/19 11:03 PM, Arnd Bergmann wrote: > asan-stack mode still uses dangerously large kernel stacks of > tens of kilobytes in some drivers, and it does not seem that anyone > is working on the clang bug. > > Turn it off for all clang versions to prevent users from > accidentally enabling it once they update to clang-9, and > to help automated build testing with clang-9. > > Link: https://bugs.llvm.org/show_bug.cgi?id=38809 > Fixes: 6baec880d7a5 ("kasan: turn off asan-stack for clang-8 and earlier") > Signed-off-by: Arnd Bergmann > --- Reviewed-by: Andrey Ryabinin