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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8C653C36008 for ; Tue, 25 Mar 2025 19:45:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=gTTyOX3jUaEfy4dS1Mr4mcXsAm0gVOv4a1bDrBDA1GM=; b=4v62Kn5zsqJgjNcEJATLZbUlxZ WctJJa8F8MZZR17q/hHNAKGwe7o2ikNi85Zq8g5wlSGpA328BhYYhDc3QdPTg+eqJCWYACvJl6HyL ofIWxFomDFeUYTuTpPpCMH3xkEXmfQMwaESSMKu6DBGMAOxuQeTVpl4AppD5vvSHxBTd8kPr4VSHH kvtdwP0boAUwi/GYRaHjxitpAG6pDLhUURoQF8rPcThkXRBEE0k0IkoaiUtaAObqhru2EOQ6owqgq cNM5beZFW3OuXiqgM+LjwjnCDMdhNGDqqXn5LEwkVarmZEZSLO1WN30kC/wLSmgUTttXu5NImABcN g4O/OsEg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.1 #2 (Red Hat Linux)) id 1txACk-00000006tc1-0opr; Tue, 25 Mar 2025 19:44:54 +0000 Received: from tor.source.kernel.org ([172.105.4.254]) by bombadil.infradead.org with esmtps (Exim 4.98.1 #2 (Red Hat Linux)) id 1txAB2-00000006tTg-2uDw for linux-arm-kernel@lists.infradead.org; Tue, 25 Mar 2025 19:43:08 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id B1AB36116E; Tue, 25 Mar 2025 19:43:03 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3A1F1C4CEE4; Tue, 25 Mar 2025 19:43:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1742931786; bh=PQ1ykelCUvUiP0SCP/hX9Nj/59NCnq4VPDmBUPAiC6A=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=AB0+yvtoZVeX1qyRTwFC+uoPgTEiEArH2wAVXoj/9agIBovYT5kLL9fTdXCYMox3a OFMyW6n5DYKr/Y2KTX8/V+y/pjy7WolTpx00slq98q34aeVmjc79BnGIqptWZx5PW3 1KTw4ww14hcuT/iw/2KGjyx7gZjNrMj/1phssAjLzuz+W9+TM+6RCwg3nxA1OXxDTm OIVruxKFD17tG67AktrhBBa0Rr6l77vPyIQZaYrvmGvYI0yqNGV0ot+BC99yCY+ebT VieNRESw3709zC+hHr0jx9+SlgW8zCrO0zzfl8DzgJdrDohKWZViZ4IWfDCUT7Hwha 0TjK0ZV4rtYMQ== Date: Tue, 25 Mar 2025 12:43:00 -0700 From: Kees Cook To: Peter Collingbourne Cc: Alexander Viro , Christian Brauner , Jan Kara , Andrew Morton , Andy Shevchenko , Andrey Konovalov , Catalin Marinas , Mark Rutland , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH v3 0/2] string: Add load_unaligned_zeropad() code path to sized_strscpy() Message-ID: <202503251242.FFDB6940@keescook> References: <20250325015617.23455-1-pcc@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250325015617.23455-1-pcc@google.com> X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, Mar 24, 2025 at 06:56:13PM -0700, Peter Collingbourne wrote: > This series fixes an issue where strscpy() would sometimes trigger > a false positive KASAN report with MTE. Thanks! Should this go via string API (me) or KASAN? -Kees -- Kees Cook