From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CA2CB198851; Tue, 25 Mar 2025 19:43:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742931786; cv=none; b=uUfSqKrYnLbuks2X/67thv0JJRvujCPfBOOiUd+sxQPYU25viSgIN9YJmk7eCF68BYvXwkAE4g/U+xnqZKBPSuk6O94dMzhVnnL1eX7Zrqe3XQ34URKt/cVJb/M7OYcsArTQ517n+HeVTHo6lpSONCM0YqQ9Hk5GYJVrh+DANhA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742931786; c=relaxed/simple; bh=PQ1ykelCUvUiP0SCP/hX9Nj/59NCnq4VPDmBUPAiC6A=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=ravS18sy0NjdoOZ8Xmfw66nvAIIVQVpo+EJtivFXQVSutdSUuLMc6nYGNIZ+AMFzMtqc5KWqm1PQRUAh8i5aCjcW4ZLMeFmbHjwm06OJDxbAmCjwdaaMTtHDg5NsQSA0zx9r1B2C5lkWwdmpT/n5FgPoNhsIZDaJZM7Zq5w9dow= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=AB0+yvto; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="AB0+yvto" 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> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250325015617.23455-1-pcc@google.com> 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