From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 331E3C2B9F4 for ; Tue, 22 Jun 2021 16:30:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 16EE960720 for ; Tue, 22 Jun 2021 16:30:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229501AbhFVQdG (ORCPT ); Tue, 22 Jun 2021 12:33:06 -0400 Received: from vulcan.natalenko.name ([104.207.131.136]:59532 "EHLO vulcan.natalenko.name" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229803AbhFVQdF (ORCPT ); Tue, 22 Jun 2021 12:33:05 -0400 Received: from spock.localnet (unknown [151.237.229.131]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by vulcan.natalenko.name (Postfix) with ESMTPSA id 64FEFAF13D0; Tue, 22 Jun 2021 18:30:48 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=natalenko.name; s=dkim-20170712; t=1624379448; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=sh2dhai/9z9GM3mJ9c/d+WvHme3Ld9yW0Q4OCexvDac=; b=QSs8zNka59bRhHdZVr3sCBPaZh3WdTq++wZE2sDQHRS/rtKFWJikJrkNXg12cQRDGl4Lmc aDk4HET1CCA48QgMK3yp4NxOHJ6/9wWP33FlXXAK3ml9eq6YQAmIbrMOi6VGGLyuO1Thop NJxcx3WiALROBT1zaGb5Lh8ZV2d0y1E= From: Oleksandr Natalenko To: stable@vger.kernel.org Cc: Johannes Weiner , Peter Zijlstra Subject: Backport d583d360a6 into 5.12 stable Date: Tue, 22 Jun 2021 18:30:46 +0200 Message-ID: <11282373.oIR2C0Pl9h@spock> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org Hello. I'd like to nominate d583d360a6 ("psi: Fix psi state corruption when schedule() races with cgroup move") for 5.12 stable tree. Recently, I've hit this: ``` kernel: psi: inconsistent task state! task=2667:clementine cpu=21 psi_flags=0 clear=1 set=0 ``` and after that PSI IO went crazy high. That seems to match the symptoms described in the commit message. Thanks. -- Oleksandr Natalenko (post-factum)