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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DEF35C433EF for ; Thu, 21 Jul 2022 06:46:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231241AbiGUGqL (ORCPT ); Thu, 21 Jul 2022 02:46:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32990 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230482AbiGUGqK (ORCPT ); Thu, 21 Jul 2022 02:46:10 -0400 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E310F53D2D; Wed, 20 Jul 2022 23:46:08 -0700 (PDT) X-UUID: bde30c7768594db7b4220ebd93a256e9-20220721 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.8,REQID:f34ef06c-0a96-4db9-9901-7f678b49630c,OB:0,LO B:0,IP:0,URL:0,TC:0,Content:0,EDM:0,RT:0,SF:45,FILE:0,RULE:Release_Ham,ACT ION:release,TS:45 X-CID-INFO: VERSION:1.1.8,REQID:f34ef06c-0a96-4db9-9901-7f678b49630c,OB:0,LOB: 0,IP:0,URL:0,TC:0,Content:0,EDM:0,RT:0,SF:45,FILE:0,RULE:Release_Ham,ACTIO N:release,TS:45 X-CID-META: VersionHash:0f94e32,CLOUDID:8f6312d8-5d6d-4eaf-a635-828a3ee48b7c,C OID:54f23d73c3e2,Recheck:0,SF:28|17|19|48,TC:nil,Content:0,EDM:-3,IP:nil,U RL:0,File:nil,QS:nil,BEC:nil,COL:0 X-UUID: bde30c7768594db7b4220ebd93a256e9-20220721 Received: from mtkcas11.mediatek.inc [(172.21.101.40)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 431965892; Thu, 21 Jul 2022 14:46:05 +0800 Received: from mtkcas10.mediatek.inc (172.21.101.39) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.15; Thu, 21 Jul 2022 14:46:04 +0800 Received: from mtksdccf07 (172.21.84.99) by mtkcas10.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 21 Jul 2022 14:46:03 +0800 Message-ID: <98d738ec5d7d32441f6e62278fff32201fd948de.camel@mediatek.com> Subject: Re: [Bug] race condition at rebind_subsystems() From: Jing-Ting Wu To: Michal =?ISO-8859-1?Q?Koutn=FD?= CC: Tejun Heo , Johannes Weiner , "Zefan Li" , Matthias Brugger , , , , , Shakeel Butt , , , , Date: Thu, 21 Jul 2022 14:46:03 +0800 In-Reply-To: <20220719133512.GD897@blackbody.suse.cz> References: <1978e209e71905d89651e61abd07285912d412a1.camel@mediatek.com> <20220715115938.GA8646@blackbody.suse.cz> <20220719133512.GD897@blackbody.suse.cz> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.28.5-0ubuntu0.18.04.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2022-07-19 at 15:35 +0200, Michal Koutný wrote: > On Mon, Jul 18, 2022 at 03:44:21PM +0800, Jing-Ting Wu < > jing-ting.wu@mediatek.com> wrote: > > Accroding your description, is the following patch corrent? > > Yes, this is what I meant (i.e. grace period before invalidating the > removed rstat_css_node). > > > If the patch is correct, we will add this patch to our stability > > test. > > And we will continue to observe whether the problem is solved. > > It'd be great to have such confirmation. Thanks for confirm the patch. We already add patch to our stability test. We will reply mail if we have any update. > > Thanks, > Michal Best regards, Jing-Ting Wu