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 5D8DE3EB80E; Fri, 4 Sep 2026 23:31:05 +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=1788564666; cv=none; b=WJBEOISFkOkGBJPtbuAXRW34njeZyXmNp8h2jgshj0bKbsA3jI7GwI6UuF64YRG14aZnKQTsobTnq8c5GYIpmG1OvGxxYDT19UU72RdH/dgEpxo394LDKfJBR2VXxDDI2MrJgdx17asEjT/TK+ICKM7XhC++ugqxx8w9+zrbj5M= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788564666; c=relaxed/simple; bh=ZtreTmFmBHdeAhJRuWlqO4cPkfet9XjhLHrudHSsfoY=; h=Content-Type:MIME-Version:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; b=Ov/ve+v4PZhzoEeRIggfmSXQ+A6NpvZjQQM1XqoNaNWPd4l3h9hDNuHrUd0KaBacjp7KztxcfjPjlrbJk9OuAtCOdNpaSbfASH7YnjZaZLX8cbpuD9Ynul1Od+MV2hLav5LDbc9dhHtthpMxS7HkphPlTK2goxpDmQ/B2/h3miM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=dGG4Tr1t; 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="dGG4Tr1t" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E43AF1F00A3D; Fri, 4 Sep 2026 23:31:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1788564664; bh=IA2cXZBXys+hzvHEv4URTwQ3OOb93LSxEWppdiqc9uc=; h=Subject:From:Date:References:In-Reply-To:To:Cc; b=dGG4Tr1tQg+IPjNTDArjpWzRgpL6UXXBwEE6qKGo6YV4raR0M3XCBLLIm/pin0b0v jNWokqHGJoaIoxZEuqTZ3oslhnUu7J4qYlgqzjdhBGDR0pEVR0WsEDx5pOd6Mq5q/k Mu+XuZEOjwPVBFih/2Q87WONrJJ16U1lw0B4hd2SQ/G8crOGuQjkjw5eUwTkRFjoty NSMCKhoZnVJWdvo1YEf1zyGyeTOQYPpnDVENIY5Oh5JUYrsfJCzFGm2KghSmmWCveP wIu/DltaJC+W+KLHda3IASaP4MoKNLYq+NyF0oSK/cpHWqu2IA0AK4cMbSvQBehvm8 5L7dQwaHqdx2w== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id BDA673924FC0; Fri, 4 Sep 2026 23:30:06 +0000 (UTC) Content-Type: text/plain; charset="utf-8" Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH net v3] vxlan: reject dynamic fdb entries that reference a nexthop id From: patchwork-bot+netdevbpf@kernel.org Message-Id: <178856460565.1016359.3887268447112947358.git-patchwork-notify@kernel.org> Date: Fri, 04 Sep 2026 23:30:05 +0000 References: <20260902155956.296699-1-qotmddnjs@ajou.ac.kr> In-Reply-To: <20260902155956.296699-1-qotmddnjs@ajou.ac.kr> To: Seungwon Bae Cc: andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, dsahern@kernel.org, idosch@nvidia.com, shuah@kernel.org, horms@kernel.org, netdev@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org Hello: This patch was applied to netdev/net.git (main) by Jakub Kicinski : On Thu, 3 Sep 2026 00:59:56 +0900 you wrote: > The commit cited in the Fixes tag allowed VXLAN FDB entries to point to > FDB nexthops so that overlay traffic could be load balanced across > multiple VTEPs. Such entries can only be configured from user space, > cannot be learned and cannot roam. They only make sense with a user space > control plane such as E-VPN where data plane learning is disabled. > > Despite that, the VXLAN driver does not currently prevent such entries > from being configured with the "dynamic" flag. The per-nexthop FDB list > is only protected by the per-device hash lock, which is not sufficient > when two VXLAN devices point to the same FDB nexthop and therefore share > the list. Aging runs in softirq context without RTNL, so an entry deleted > by one device can race with an addition or deletion from the other, > leading to list corruption: > > [...] Here is the summary with links: - [net,v3] vxlan: reject dynamic fdb entries that reference a nexthop id https://git.kernel.org/netdev/net/c/98fc57d16744 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html