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 968A0EAC7; Fri, 9 Jan 2026 02:02:23 +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=1767924143; cv=none; b=iatxY85octMahK07n+T+4XXwAzUM0jQ4f5K6ocATIdff2/IhHmHLC8amBWA27FT1/6DEO+Knghb7gnfqdlJiXcp0YMGWpWZsbV71n+fv2iRdv07n8WG1xa/PgoKDTDDGZtreBhIXsTq91Hb0V7slV2h5rStlygY+u1w3EjHNToQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767924143; c=relaxed/simple; bh=/eCUdNyYUdI+5w6t7BPtTqGH0e/ISLcMX+EQQqZiBK8=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=bTHpjT/CUTmgfuhfqqNU+inq0ue3SMxcfQ+jeZyLlYwtlsP+zUhxNGZY15vy3AMbWkdXLK9INHoWd17oQwbJXATztngP5xQCT2ODERs8rZRrXfEfNaYif7Em+Q/CzVYJxAFTsa3xHPMAP0js66LOfdKRim5AqrDAn9AoTCNFG/c= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=MhOzb5K1; 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="MhOzb5K1" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B0408C116C6; Fri, 9 Jan 2026 02:02:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1767924143; bh=/eCUdNyYUdI+5w6t7BPtTqGH0e/ISLcMX+EQQqZiBK8=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=MhOzb5K1OqZbh9MBoWBgPE5uG794g5CaQm1U0GLT6EsoVeMo1VMsNX15HUsZ/JALC TphiEbw0U7HfXqno9FKA+Ct8OJZtbmpegbfC51ceZoYy5JFPKMmaMyGT0tloeuyJrn iZMh7AIH6DtZYNsIKO4E1vRz823dkpzvh8nUFCZtZ4A3ZdZf0KdTdUMJZOuaazt239 44ICnAxMLU2cMwYwWGGyuM8ktfUEvBdEjONyOA3S1GxSA5Fs9k0Q7A2N5jFRmSKqG5 XnWgEpc9gP4Uflw7xifAQYJq0pdV+YsUqjEErCSIVPaNJm5JaaV0CgBdws/ZdOhGGf unB9KnwB3cpYA== Date: Thu, 8 Jan 2026 18:02:21 -0800 From: Jakub Kicinski To: Kathara Sasikumar Cc: alex.aring@gmail.com, horms@kernel.org, davem@davemloft.net, edumazet@google.com, pabeni@redhat.com, linux-bluetooth@vger.kernel.org, linux-wpan@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 net-next] net: 6lowpan: replace sprintf() with scnprintf() in debugfs Message-ID: <20260108180221.2dbcccf5@kernel.org> In-Reply-To: <20260106171610.124138-2-katharasasikumar007@gmail.com> References: <20260106171610.124138-2-katharasasikumar007@gmail.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Tue, 6 Jan 2026 17:16:11 +0000 Kathara Sasikumar wrote: > sprintf() does not perform bounds checking on the destination buffer. > Replace it with scnprintf() to ensure the write stays within bounds. Aren't compilers clever enough these days to warn about potential overflows? AFAICT the buffer is 32B so it will definitely fit %d no matter what. -- pw-bot: reject