From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 4545A386C25 for ; Mon, 24 Aug 2026 18:51:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787597473; cv=none; b=d6FrJOAAjAZpvUODniL41UJyS5iPt+unQCWgRv0KR346wA+n71DMrJGZOyazYqLt/SpR8lkRNIc5HXJNccWweamTGUuiPKJ2lxDZ6bRTAWz4hhKfmtPiLko9ctdnUKeDni9TcQbPi+TMI7m7La99vC1ySQv4ACJqmDwFhN92DtY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787597473; c=relaxed/simple; bh=NNx6iFVSWdF1SIjoHBv6J+izdzJBLnjayh/M3FCDd7A=; h=Content-Type:MIME-Version:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; b=bMwQIJR3A+mNGMHG9vGqrPSxwa1ij1BdUBDyaS/gayU45yr/bJnULFIZ9M429MSYZIPaHe61iEr0hp1e1/Pf74S7QwXFB1mygtV/Zv/UTMVLjGXBon4z6zBWECPHweLBGvQGzCf8LdDeWJJwJDmh3ug6j+JsIhUiy5s5+nDLInQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=JkboAzTY; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="JkboAzTY" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1A83B1F000E9; Mon, 24 Aug 2026 18:51:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1787597472; bh=sv0cQhIXoHM2HJjY/tjxUWURVlfOBd07q0Yx6t9ls2o=; h=Subject:From:Date:References:In-Reply-To:To:Cc; b=JkboAzTYhSUlp2WmFbmFFBOpWURSPPAEwfw+GiujbeVjOyqy4TkwF7os7j1C7qJZa +/g9AJmGTOetvx+7zcavU2JG7hvlyCR30gvW9PHujuZO7+YtF7xVnfB+IdqT2TlB+t yMptxAVmtDVBztWxLn+L7WZvkRJMfO3j3IvLIa1qFyqUXqnsWIK5XyIOLCrV/rw1qb dPExrFuV8jHhthb8e0e80n/AdWknTbuYaDaCrTGZrsgLZhK/TWx5YLdQeBGrnii8uP OPIB5GptljAo1o2dK7PPRdxr4YvL7usOOALYLDSJF/cZk3rUohap4Dw4uwadx1Kr9Z Dg3em0yKIfsyA== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id D0A9F3924A4C; Mon, 24 Aug 2026 18:50:20 +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 0/1] net: l2tp: do not propagate multicast notification errors From: patchwork-bot+netdevbpf@kernel.org Message-Id: <178759741938.3062482.8274115990086952612.git-patchwork-notify@kernel.org> Date: Mon, 24 Aug 2026 18:50:19 +0000 References: In-Reply-To: To: Zihan Xi Cc: netdev@vger.kernel.org, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, horms@kernel.org Hello: This patch was applied to netdev/net.git (main) by Jakub Kicinski : On Thu, 20 Aug 2026 18:40:27 +0000 you wrote: > Hi Linux kernel maintainers, > > We found and validated a issue in net/l2tp/l2tp_netlink.c. The bug is reachable by a > non-root user via user and net namespace. > The failure is observed on the unpatched kernel, not theoretical: the original PoC > returned ENOBUFS after publishing live objects and then accumulated sessions. > Here, that reachability statement refers to the finite state-commit trigger; > the OOM transcript below is a separate root initramfs leak-mode run (UID 0, > PID 1) used to make the leak and panic deterministic. > We've tested it, and it should not affect any other functionality. > Regression coverage includes the root namespace and an unprivileged user/net > namespace, with notification-queue pressure and successful ACK paths for all > three state-changing PoC commands; tunnel_modify was reviewed as a > notification-only command path but was not a separate PoC trigger. > No broader regression suite was run. > The finite fixed-kernel runs returned ACK success for all three state-changing > PoC commands in both namespaces. The leak run returned ENOBUFS and reached OOM > after 41984 hidden Ethernet sessions. > > [...] Here is the summary with links: - [net,v2,1/1] net: l2tp: do not propagate multicast notification errors https://git.kernel.org/netdev/net/c/af20e269f745 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html