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 E9947204C20 for ; Tue, 4 Feb 2025 19:48:46 +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=1738698527; cv=none; b=K+wFQBXtq4B+9wm+uU6Y8kBQzEgOfeOlV6DtVUI99bM35gSyIXNnNTFAwbItddL7myXmK9c1J9Qv8Yii3jP4pR0ToN5xeRC4X2C0S2fcnNgHFAtr6FL73Vvz3oV55gS+aVr1tELvyKlCrkoMFVsabjkzWW34v/i+HZ2W+UM2LXE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738698527; c=relaxed/simple; bh=+npczuPMPsPyuLEEYFKWeCezOZzWKhX4ilDAi6kvdFw=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=NZiNIDj25qWuA8d93xhtGn3ua/YqMCCkb2cL4wkeza7uUToilfHDcOF6pe57OM0rvsddB+P4X1aUj/xoal5XC6pbG0Vytzr4cbPP486ocz20Jz9d6WvgWYMsmdcZHdcIYdJc5jC+5ewaKGX54p7juB6ckByHMQc576bJBxGNmDM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Ey6pHlNl; 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="Ey6pHlNl" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 226D4C4CEDF; Tue, 4 Feb 2025 19:48:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1738698526; bh=+npczuPMPsPyuLEEYFKWeCezOZzWKhX4ilDAi6kvdFw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Ey6pHlNlvfnMTYjIs4Wk9FaG0VhZrr2ByhhT5dOzk43ydxnVx0m/e3SjU5tEzurkj Sx8kriJ0nXcDHthzNw2F3g3gRvqZT2eMyeonAVZFB2UoYLBGhRpxZIvan9kKONYRlX 85NNhVm9KpH2auNz7BJIUfOyBHGY1a457mN/yNYiSXr3ffTzFtFejJJ/2eCIq2GK7/ N1dJzLVc9NaX4LDOc3zhVna0pfG+5904wPaRLe3wOyOyq+J/KEtkOljem/wpujeMzP 5oSAdp94/lZS++vRCxSswy+rFP1TAjisKoBvzT0l5fA75wCT37y1a4FfOgSCkkaXtd FEXp79ZSL9SFw== Date: Tue, 4 Feb 2025 14:48:41 -0500 From: Sasha Levin To: Paul Kramme Cc: stable@vger.kernel.org, chengming.zhou@linux.dev, Bendix Bartsch Subject: Re: v6.12 backport for psi: Fix race when task wakes up before psi_sched_switch() adjusts flags Message-ID: References: Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: On Tue, Feb 04, 2025 at 04:31:44PM +0100, Paul Kramme wrote: >Hello, > >we are seeing broken CPU PSI metrics across our infrastructure running >6.12, with messages like "psi: inconsistent task state! >task=1831:hackbench cpu=8 psi_flags=14 clear=0 set=4" in dmesg. I >believe commit 7d9da040575b343085287686fa902a5b2d43c7ca might fix this >issue. > >psi: Fix race when task wakes up before psi_sched_switch() adjusts flags Hey Paul, The commit you've mentioned is already queued up, so it should be there when the next release happens. -- Thanks, Sasha