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=-3.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no 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 85958C35240 for ; Fri, 31 Jan 2020 02:16:16 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 43D8E24681 for ; Fri, 31 Jan 2020 02:16:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="naQx0E8T" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 43D8E24681 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id CAEB76B049A; Thu, 30 Jan 2020 21:16:15 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id C61DF6B049B; Thu, 30 Jan 2020 21:16:15 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id B74FB6B049C; Thu, 30 Jan 2020 21:16:15 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0059.hostedemail.com [216.40.44.59]) by kanga.kvack.org (Postfix) with ESMTP id 9F5396B049A for ; Thu, 30 Jan 2020 21:16:15 -0500 (EST) Received: from smtpin03.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 521CE8248047 for ; Fri, 31 Jan 2020 02:16:15 +0000 (UTC) X-FDA: 76436314710.03.egg87_8ddeb79e5ec3b X-HE-Tag: egg87_8ddeb79e5ec3b X-Filterd-Recvd-Size: 3002 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf23.hostedemail.com (Postfix) with ESMTP for ; Fri, 31 Jan 2020 02:16:14 +0000 (UTC) Received: from localhost.localdomain (c-73-231-172-41.hsd1.ca.comcast.net [73.231.172.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id A3E66206F0; Fri, 31 Jan 2020 02:16:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1580436974; bh=tyJKzLA16be5mNz2EBj3faXgdYPo6KX3V43I+YCflTI=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=naQx0E8TmVLVXc/yB0+otsJ3q2KIhHCnxBgDTYtppdT5Y26k7wkvZykakj9qBy608 g2ovdKkyHPtcL2CzV5Ue0H58FpBp6X7DhhCv8iVr8JTITI5ba7U+7mBY/SB8LjC3TI 32/VezsBlEl54vLgzoFT4LRgjVRBHlK8PnH/PgPs= Date: Thu, 30 Jan 2020 18:16:13 -0800 From: Andrew Morton To: Walter Wu Cc: Andrey Ryabinin , Dmitry Vyukov , Alexander Potapenko , Matthias Brugger , "kasan-dev@googlegroups.com" , "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , wsd_upstream , "linux-mediatek@lists.infradead.org" Subject: Re: [PATCH v4 2/2] kasan: add test for invalid size in memmove Message-Id: <20200130181613.1bfb8df8e73a280512cab8ef@linux-foundation.org> In-Reply-To: <1580355838.11126.5.camel@mtksdccf07> References: <20191112065313.7060-1-walter-zh.wu@mediatek.com> <619b898f-f9c2-1185-5ea7-b9bf21924942@virtuozzo.com> <1580355838.11126.5.camel@mtksdccf07> X-Mailer: Sylpheed 3.5.1 (GTK+ 2.24.31; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Thu, 30 Jan 2020 11:43:58 +0800 Walter Wu wrote: > On Fri, 2019-11-22 at 06:21 +0800, Andrey Ryabinin wrote: > > > > On 11/12/19 9:53 AM, Walter Wu wrote: > > > Test negative size in memmove in order to verify whether it correctly > > > get KASAN report. > > > > > > Casting negative numbers to size_t would indeed turn up as a large > > > size_t, so it will have out-of-bounds bug and be detected by KASAN. > > > > > > Signed-off-by: Walter Wu > > > Reviewed-by: Dmitry Vyukov > > > > Reviewed-by: Andrey Ryabinin > > Hi Andrey, Dmitry, Andrew, > > Would you tell me why this patch-sets don't merge into linux-next tree? > We lost something? > In response to [1/2] Andrey said "So let's keep this code as this" and you said "I will send a new v5 patch tomorrow". So we're awaiting a v5 patchset?