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 551D73A7F46; Sat, 11 Jul 2026 10:21:03 +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=1783765265; cv=none; b=lJcZZObbMi629qIGOMH/ec6H4pFu6NFtjx/NYgL+yGMi8WdSt+zCasf1z6BQLJHrbJZWvsQXGBoSROzew8NZrt99vkZVgIYrqWAbxONVr+ivGJHwcZPXNVINB4TOK6d7Hc5mBsqTERd/myvnW4JeueYcDbIOfJb2/M2MhjO9IaU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783765265; c=relaxed/simple; bh=Pdk7n/gv7WDV585arv1it15NuGPfrFYTgb3IqLH/wTA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=PAtLfSw+1BMLXJyh0XOo074nkunjXVZUXHO5pAqZTkv1kopkQtissFVKvM+pOKHPGUIwaJjgguFHzI2C18spDHhyesxZNf+kB/08KuiT1Ln3uSaQPy1lePnNrQjCaYWg5kACxfZyw5cS0zdGTiUBeTXMStuqSWOAxClkIZy+SSc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=hoC3bElT; 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="hoC3bElT" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9E54C1F00A3A; Sat, 11 Jul 2026 10:21:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1783765262; bh=m3U/HkqQwesTEFsGEFZ2atwD5gY93zb0ftBz8NMWsNI=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=hoC3bElTfY068wmk8sASR2sgcuSR1b6b2AaK2hZDeaHlTqHU2UKGkZUv3R6IJbQGe vZMfOxK4JfrIPrpNsuxnZdBXG8YXu74NCnkbMUyT5l+CWpYRS1lMaOB3+qSCbs6C90 pp7EQETdwneD4vCFKoiMKNJl8c8t+nnYEqmMYRbrTSWo0zm70yS9//WVjpvWKMGqwl DUY8i1Q9fT4HH1l6vlmMo5x+/hOvuCLN9Pp0ml/Zow9iB2rkz0V8C0DGsHxS9h42JB FgdDYzJWavXmXvwOOI0CEenCfwTG1kDR/5xR+Hqyd3SXMtvyjrklKfAv/30s3Y1aiO bPLhcKNy67F/w== From: Sasha Levin To: stable@vger.kernel.org Cc: Sasha Levin , Thomas Bogendoerfer , Sebastian Andrzej Siewior , Thomas Gleixner , Jiayuan Chen , linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, Greg Kroah-Hartman , Jonas Jelonek Subject: Re: [PATCH 6.1.y] MIPS: smp: report dying CPU to RCU in stop_this_cpu() Date: Sat, 11 Jul 2026 06:20:57 -0400 Message-ID: <20260711061631.agent5-0003@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260710225147.24574-1-jelonek.jonas@gmail.com> References: <20260710225147.24574-1-jelonek.jonas@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit > commit 9f3f3bdc6d9dac1a5a8262ee7ad0f2ff1527a7e7 upstream. > > smp_send_stop() parks all secondary CPUs in stop_this_cpu(). The function > marks the CPU offline for the scheduler via set_cpu_online(false) but > never informs RCU, so RCU keeps expecting a quiescent state from CPUs > that are now spinning forever with interrupts disabled. Queued for 6.1, thanks. -- Thanks, Sasha