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 7880D21FF2E; Sat, 28 Feb 2026 00:20:06 +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=1772238006; cv=none; b=RKvVL4LRECQNo6UDt/TRpIu/QYLAWucxi42GDVbx4BtgH9Ea0VX/K4ol85le8aRuSaAKkPsFcW377bVsqkaGIzRFsHxJr7WLb9NI/zRVwMkZsB3wf+WD5cmLtk4whDTmAnxSxjLwNbqmwqgRh9DDmbL18SU6m9PLzP1Pl7MQoGo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772238006; c=relaxed/simple; bh=rFLs49bIoTa/GDiTlmR2it7GbdnW1QvlONvz4DeIYmc=; h=Content-Type:MIME-Version:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; b=BopNUucw1gj0Z/pXR0BCJqULe2uohwdL+RVD7ncRh28XVuxFwLDrWYIVTFMxtmxVRrNAw535Xs8BLyPk14oZr/ooGqPiBOQLUq9Zg/ypTgPzUVUpQIr5ZEy0GtLYCl/O4Khe6dsahMBR3Gs04BJ7MiYisZd9DY/gTSnNgxwZwFQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Hy/UMOQd; 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="Hy/UMOQd" Received: by smtp.kernel.org (Postfix) with ESMTPSA id EF5A2C116C6; Sat, 28 Feb 2026 00:20:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772238006; bh=rFLs49bIoTa/GDiTlmR2it7GbdnW1QvlONvz4DeIYmc=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=Hy/UMOQdPitkxPPdo2+cm6lPD82U6zQEyfmPGssSnw8liegLi5HWctSiKMbGLyjSv LxceG9tUktXkK08BlCWuFK3R9CNP/ueUseB32YXPWIx5CjxeDwWDdLRAnKBE7bZ2Qg gW0syhlQCu40Puxyj5CWGBvbzIsPdGnFvLLWZpZR1+zPPSgTTnVaCbfKRfEkDodX1Q YxyN9tJTkeB1GE/3f1xBBFDa9czIAZnUemKpM2JVz3jpo/skm645i59JxtEjlPDZcV tKXx2P/CFb1JFIdFMosA1r6Ja1vbmTo05Pv0yYfDi62QfDp4rD5RUsWCHctTQVqFRJ fP2zfExxPlRxQ== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id BA09839EF967; Sat, 28 Feb 2026 00:20:10 +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 bpf v4 0/2] bpf: cpumap/devmap: fix per-CPU bulk queue races on PREEMPT_RT From: patchwork-bot+netdevbpf@kernel.org Message-Id: <177223800954.2812023.3473953942632581583.git-patchwork-notify@kernel.org> Date: Sat, 28 Feb 2026 00:20:09 +0000 References: <20260225121459.183121-1-jiayuan.chen@linux.dev> In-Reply-To: <20260225121459.183121-1-jiayuan.chen@linux.dev> To: Jiayuan Chen Cc: bpf@vger.kernel.org, ast@kernel.org, daniel@iogearbox.net, davem@davemloft.net, kuba@kernel.org, hawk@kernel.org, john.fastabend@gmail.com, sdf@fomichev.me, andrii@kernel.org, martin.lau@linux.dev, eddyz87@gmail.com, song@kernel.org, yonghong.song@linux.dev, kpsingh@kernel.org, haoluo@google.com, jolsa@kernel.org, bigeasy@linutronix.de, clrkwllms@kernel.org, rostedt@goodmis.org, tglx@kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-rt-devel@lists.linux.dev Hello: This series was applied to bpf/bpf.git (master) by Alexei Starovoitov : On Wed, 25 Feb 2026 20:14:54 +0800 you wrote: > On PREEMPT_RT kernels, local_bh_disable() only calls migrate_disable() > (when PREEMPT_RT_NEEDS_BH_LOCK is not set) and does not disable > preemption. This means CFS scheduling can preempt a task inside the > per-CPU bulk queue (bq) operations in cpumap and devmap, allowing > another task on the same CPU to concurrently access the same bq, > leading to use-after-free, list corruption, and kernel panics. > > [...] Here is the summary with links: - [bpf,v4,1/2] bpf: cpumap: fix race in bq_flush_to_queue on PREEMPT_RT https://git.kernel.org/bpf/bpf/c/869c63d5975d - [bpf,v4,2/2] bpf: devmap: fix race in bq_xmit_all on PREEMPT_RT https://git.kernel.org/bpf/bpf/c/1872e75375c4 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html