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 7B0362F532F; Fri, 13 Mar 2026 01:40:10 +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=1773366010; cv=none; b=uLo9xQV7NFk82ylsavpUY494L6u8qeiEHeFfQ1Tb81lLgahow0zQmJhE3SerXGxQFWE+zwwlmDiOyOolbb25As3qFPfQELydG/fbvKUDSlWbqqZ+6nYTmo0kDTJ0j2Z3/wa2U9occjCDd3xdfwsOFFVGR61Q9Tm0TKKcMLLLaWM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773366010; c=relaxed/simple; bh=9julhPHix0+n/imzVgiojmJlJVQn8OgQW7B4wlRNCxM=; h=Content-Type:MIME-Version:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; b=U0TrwyGJI7ckEez53HEQUFgsMfe0r+GnJZvMTV0r5jza1meLI6xHRK1EgC1Jrg8Cejgkrh7d1ayn8WndhOHMs74ix4coL6RHlO5gwvqHILhuwk5eKwbuhK89jnnGZx41L+LrTXvVkmO3S+4Rlpa0mJqc+Psa0bFEE8B4gcK7w0g= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=QoQsDSeW; 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="QoQsDSeW" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1461AC4CEF7; Fri, 13 Mar 2026 01:40:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1773366010; bh=9julhPHix0+n/imzVgiojmJlJVQn8OgQW7B4wlRNCxM=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=QoQsDSeW9b5iSvak8E9HDpJCuBmmK+tGe/dfQ6Jkn5S67eC5AnhN88f9MV8MpGPW9 kKut4lFNP7UhcrkC/eyHcmiK0MO5NihXJTJ9ZAU688c4v+nuCksoO7/7u4lX14Rud5 h4nrbGK7IWMSfRMl0stPB1NPyWvvSqCqgFBX0TckSzXGwgd0pLmihhvE3wlSqNmd77 2/ix87JTA1uVCOqeKD4KEVaNlODQOuocjiPf9q9ByJwaOD/5CMWOMwE71WY9HEzBCD ZGT+/nq6VTqJLV/NRdNPk8gtSswwoMXFdKZhcdwNwofwdmA7GAOG51K+WBy4f93701 baZIHKGojT6cQ== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id 7CF4E3808200; Fri, 13 Mar 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] bridge: cfm: Fix race condition in peer_mep deletion From: patchwork-bot+netdevbpf@kernel.org Message-Id: <177336600530.628795.16179964876225068685.git-patchwork-notify@kernel.org> Date: Fri, 13 Mar 2026 01:40:05 +0000 References: In-Reply-To: To: Hyunwoo Kim Cc: razor@blackwall.org, idosch@nvidia.com, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, horms@kernel.org, bridge@lists.linux.dev, netdev@vger.kernel.org Hello: This patch was applied to netdev/net.git (main) by Jakub Kicinski : On Wed, 11 Mar 2026 03:18:09 +0900 you wrote: > When a peer MEP is being deleted, cancel_delayed_work_sync() is called > on ccm_rx_dwork before freeing. However, br_cfm_frame_rx() runs in > softirq context under rcu_read_lock (without RTNL) and can re-schedule > ccm_rx_dwork via ccm_rx_timer_start() between cancel_delayed_work_sync() > returning and kfree_rcu() being called. > > The following is a simple race scenario: > > [...] Here is the summary with links: - [net] bridge: cfm: Fix race condition in peer_mep deletion https://git.kernel.org/netdev/net/c/3715a0085531 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html