From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793059208; b=4eO8Y+lSQ/CE+V+fW7SpWXauYEJHDUV5i2Yw+CkxdgcXBaQr3yXdTK9MKe8sr5cxXd1Q OKdrM25jm8jiKvPjiL6Th4Stvh9kcaU1syTj00zzbDKug4sZ8EQ/RPinHCe66rcBv3A0l DwRpcqZBTOY0qZQ5EHvt23TxXlY4QI+B8gvEKh78GiGAFGGs5WLMN+n2PZhwr+0Bi9daK J8pNrwiKiHLAWKKMkeRJSjeS1+6AJKbG+D1Zow42lbk8BRa+kbWC6x2w61hMsXlL78EmU yIR5Vj0kINXPF1tQIF26IYT11XrVpwZPuzbuza7nU+trWnulCXZ9IOWnwDXuztWPi4w== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793059208; h=Received:DKIM-Signature:Received:Content-Type:MIME-Version: Content-Transfer-Encoding:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; bh=sRBxls+fDXcYabNmDkORIlMaTl0ADNtGzRxkQN+pXR0=; b=ua8+b6b2lqaZyQdi/8sxXz8+ttAcp6PNMQv5rmLM/hWZrRdeJh6VukyqgEllbY+W8Qxl M6cIJzk40wsHYmokxQwLSTYFF19TQRlRivFdxSo4EjIPVDgnxZy6CZRdmejkemIcqxRVL Wp4ceCy6ogcSeN/9wMPxnMmwBbcdDS/E50emoPkN4JejnIq3TOnVvnddBksl5dixQGZ1/ s4dL3sEtj59Vz2pMaAHIluC7aVJysFcfx5Yip7sVvUuxHMKo+JnarGTty4c6CRa/VBeT7 uSJuqjj4UFWZ8NfCE0BVRiE97ygwxJQFL587c1qWV0/opfdHKDRAxtbyp2hgAXEm00g== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=lVfFljSR; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3BE6E606A320; Tue, 27 Oct 2026 00:00:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=lVfFljSR Received: by smtp.kernel.org (Postfix) with ESMTPSA id 133171F01825; Tue, 27 Oct 2026 00:00:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793059208; bh=sRBxls+fDXcYabNmDkORIlMaTl0ADNtGzRxkQN+pXR0=; h=Subject:From:Date:References:In-Reply-To:To:Cc; b=lVfFljSRPcMn+FDAEFbvFCyrsfvBlZtNff4+EsYFi6Ovb/1CgJ9S761Es5oQhtzKV 5tWh1gpLEXYa6Ut0c5gEkPs4GHCJtVNRH58UMN7yP7jsNuA3C66kFWvN4OyEAQUKtG jCpnmAxQg8Gsl7196nd9QHIHKqkeDci3e7U20RuH9qf7W2mD3lReN1+QZwHUACtKe6 x584byggWLdcO6sINU5U7umgr6FD0mTwwTUctG3TmoYRIctWqLPw6V2q9KPjWoG6l5 TH7Y6ILlPg2fME7y4VyxD2m9Wfetj1pX86ozKxdrtga7hAYIJiGqQOBjkMJPiAxUDR AVHY4xgdquP+w== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id 073753AA80F1; Tue, 27 Oct 2026 00:00:08 +0000 (UTC) Content-Type: text/plain; charset="utf-8" X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH net v2] tcp: limit tcp_tso_rtt_log to a valid shift count From: patchwork-bot+netdevbpf@kernel.org Message-Id: <179305920681.3470272.11485380440248270643.git-patchwork-notify@kernel.org> Date: Tue, 27 Oct 2026 00:00:06 +0000 References: In-Reply-To: To: Yingjie Wang <1075151112@qq.com> Cc: netdev@vger.kernel.org, davem@davemloft.net, edumazet@kernel.org, kuba@kernel.org, pabeni@redhat.com, horms@kernel.org, jiayuan.chen@linux.dev, ncardwell@google.com, kuniyu@google.com, corbet@lwn.net, skhan@linuxfoundation.org, rdunlap@infradead.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Hello: This patch was applied to netdev/net.git (main) by Jakub Kicinski : On Fri, 23 Oct 2026 22:40:36 +0800 you wrote: > tcp_tso_autosize() right-shifts the u32 returned by tcp_min_rtt() by > sysctl_tcp_tso_rtt_log. The sysctl uses proc_dou8vec_minmax() without > an upper bound, so it accepts values through 255. Values above 31 make > the shift undefined. > > A process with CAP_NET_ADMIN in the target network namespace can set the > per-netns sysctl. With CONFIG_UBSAN_SHIFT=y, setting it to 32 and sending > TCP data over loopback triggers: > > [...] Here is the summary with links: - [net,v2] tcp: limit tcp_tso_rtt_log to a valid shift count https://git.kernel.org/netdev/net/c/850a7225bc61 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html