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 164753B635F; Thu, 20 Aug 2026 21:40:59 +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=1787262060; cv=none; b=TGSgQ2d/EOij4Htv+ZuYded05vXfW8TyM3Mb9OABXJkTR/RPji5ibjLg6cHLFIxUHcddG4T11M5sRSrzX3TikE7U1Cd8VLqEcXrSW34PSZFe0m/0WSZPOj9TK5oXoXB0tLJLu0gZUlITY10Hr57biaMLjcydkyzcxWc1rXhQsdg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787262060; c=relaxed/simple; bh=exiL6wswRhdaNLKv4gWlXkWzdT3qcngBxtjdirjfBHY=; h=Content-Type:MIME-Version:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; b=KdFt7bZxvHlGl/RALAX7yksdTZ1Utux06RZe9ngoYGLtlSlIaR7whkzKfLqnq1aAKCet9vLPb0x9iyr3cEJJ97z8vVrWkXW/qVj1UZe31zr99MoR+n1IFDwiG9k7YNuRkRRTFKSVv5ucnYM76+98LMzh72d6QxjXkiNF+KsSPfI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=g0lWkqwb; 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="g0lWkqwb" Received: by smtp.kernel.org (Postfix) with ESMTPSA id EFCD31F000E9; Thu, 20 Aug 2026 21:40:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1787262059; bh=Mcv4XeP+PwYem57cnu90VC04Jhu5bbOrnk8icEboUBA=; h=Subject:From:Date:References:In-Reply-To:To:Cc; b=g0lWkqwbFckdi/16uvwysio0Xwi7h50SnmuCjBDmBoeMGGPZ1EgPUMfr1TqdnFWuu ls4ypkjrM9YQDH/MnSlh1liF6Y52fizPBVVjsx1AntAJmjJzPASh6YbW6IfS+ewsDh 4omcIdqAvB0mWNF4hKBJzCm6FO7mml6ONJD3rBV6m3BKsZMSLgIZtd4VZdQtPq9T/e zL5j3XfID2dRvsmESAPqo76n5v8kH6qnUEGlf9CJKllMPs3htG/vb1FIGn8aGt99pg GIJKjjxWAiwzdeoLt5I6/D7LxxHGymV6UYAlicy4gFkSixmdWq/+6FyyrJBNBpwSqd pgx/0RZdkfG2Q== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id 569683811A44; Thu, 20 Aug 2026 21:40:10 +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 0/2] bridge/vxlan: fix reading neigh ha without synchronization From: patchwork-bot+netdevbpf@kernel.org Message-Id: <178726200889.500714.12664805984672388732.git-patchwork-notify@kernel.org> Date: Thu, 20 Aug 2026 21:40:08 +0000 References: <20260818150756.890025-1-razor@blackwall.org> In-Reply-To: <20260818150756.890025-1-razor@blackwall.org> To: Nikolay Aleksandrov Cc: netdev@vger.kernel.org, idosch@nvidia.com, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, horms@kernel.org, roopa@nvidia.com, bridge@lists.linux.dev, andrew+netdev@lunn.ch, dlstevens@us.ibm.com, amwang@redhat.com Hello: This series was applied to netdev/net.git (main) by Jakub Kicinski : On Tue, 18 Aug 2026 18:07:54 +0300 you wrote: > Hi, > Neigh ha address must be read using the seqlock to get a stable snapshot. > Both the bridge and vxlan read it directly and can see partial updates. > I reproduced both issues with running neigh updates and exercising these > paths in parallel and saw partial addresses, e.g. updating between > neigh A: 02:00:00:00:00:00 neigh B: fe:ff:ff:ff:ff:ff was able to observe > 02:00:ff:ff:ff:ff and fe:ff:00:00:00:00 in packets. Noticed this initially > in the bridge, then checked vxlan and its arp/neigh_reduce functions have > the same bug, route_shortcircuit is doing the right thing already. > > [...] Here is the summary with links: - [net,v2,1/2] net: bridge: arp/nd proxy: fix reading neigh ha https://git.kernel.org/netdev/net/c/57549ab90791 - [net,v2,2/2] vxlan: fix reading neigh ha https://git.kernel.org/netdev/net/c/b824059a673b You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html