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 651CE248F62; Fri, 3 Apr 2026 01:40:23 +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=1775180423; cv=none; b=iri2Oqiz+q8OVmvJOFDZPP4zyGz/4jbZbpVIIpjXgzgBa5FmgYSwLagkvv9/1buNwRP9dgF256wq6U6A98wGEfFuXlvPfXitUvGFinoHpMEM0zM5KX13kptO70IqrdyurbTIelE7BffbK+oaifdRFFJt/ZOjjM7mkz54dPmGAfM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775180423; c=relaxed/simple; bh=fsLYb4Ud5XTwC6TrojQFLPZuTJroc9T0vlmJ/ao7dPE=; h=Content-Type:MIME-Version:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; b=ZzoMitZxcscaV3K8B91J46I1TJEevVdWO2uoWZ3nhENBKk2/e60ivc4ukGWlw76MH9bxsiz3OieRSpGpUgnsis7agg7c+Q5c+KZ3YR1tu5ynn+xJEo0/cJx7PhHKzUIms8e5PaG18R7tbVxPnG3DUiau07FPTOjcahWFDYVE36E= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=L5bYJ0jb; 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="L5bYJ0jb" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E5F98C116C6; Fri, 3 Apr 2026 01:40:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1775180422; bh=fsLYb4Ud5XTwC6TrojQFLPZuTJroc9T0vlmJ/ao7dPE=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=L5bYJ0jbXrCV1eIw4jwXNy7Cs0nzdJwX2EO3NAyj7DaD+dyaWE6HXLiVMdBdEEHq7 pcN5zZ6nQqvOyc9sO1+liFxbA0oWhmvXuEQjW6dS3zip9viaJZU5Z0LUGPVb7LUJM0 TfXzVnwmxIYBBEEm3eGJJVUz2wuXjDftZ1lyOk3WYd4sQX+TcqTAfa+TD7czyo4CYq Yw9ZmL5B9HDAQVxEW+Wi7BCPPrXCvUhHm10+G1Kdaw7Pe7tQOtvN2k+zbKdcfm9Bgk /pzDlYQp7xkto+b7ZeQfxo5xr2rv83YaHdP9FhJaQRzg7/YtcW/3eIKN1QF37F56tP 4oKFXzigr6NSQ== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id 3FEBF3809A09; Fri, 3 Apr 2026 01:40:06 +0000 (UTC) Content-Type: text/plain; charset="utf-8" Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH net v2] net: stmmac: fix integer underflow in chain mode From: patchwork-bot+netdevbpf@kernel.org Message-Id: <177518040504.695500.16991408792529734649.git-patchwork-notify@kernel.org> Date: Fri, 03 Apr 2026 01:40:05 +0000 References: <20260401044708.1386919-1-LivelyCarpet87@gmail.com> In-Reply-To: <20260401044708.1386919-1-LivelyCarpet87@gmail.com> To: Tyllis Xu Cc: netdev@vger.kernel.org, andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, peppe.cavallaro@st.com, rayagond@vayavyalabs.com, stable@vger.kernel.org, linux-kernel@vger.kernel.org, danisjiang@gmail.com, ychen@northwestern.edu, LivelyCarpet87@gmail.com Hello: This patch was applied to netdev/net.git (main) by Jakub Kicinski : On Tue, 31 Mar 2026 23:47:07 -0500 you wrote: > The jumbo_frm() chain-mode implementation unconditionally computes > > len = nopaged_len - bmax; > > where nopaged_len = skb_headlen(skb) (linear bytes only) and bmax is > BUF_SIZE_8KiB or BUF_SIZE_2KiB. However, the caller stmmac_xmit() > decides to invoke jumbo_frm() based on skb->len (total length including > page fragments): > > [...] Here is the summary with links: - [net,v2] net: stmmac: fix integer underflow in chain mode https://git.kernel.org/netdev/net/c/51f4e090b9f8 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html