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 167E5C3F6B0 for ; Sun, 7 Aug 2022 06:59:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233470AbiHGG7L (ORCPT ); Sun, 7 Aug 2022 02:59:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57256 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231191AbiHGG7I (ORCPT ); Sun, 7 Aug 2022 02:59:08 -0400 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DAC289FE6; Sat, 6 Aug 2022 23:58:58 -0700 (PDT) X-UUID: e08cd86b6d3340b08fa8571304e2c95b-20220807 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:MIME-Version:Content-Type:References:In-Reply-To:Date:CC:To:From:Subject:Message-ID; bh=M95TLiNkwsL0QeZAeys9UAP5FWDjNm0kDQVp7WcThws=; b=Flz3Q0i7aGu6lCgW8bJADz/8LXyU4dgAggJHbd18fbZAsbukKzOs25mm4c0RLAEQ9WfEGz59YC3roqCUqjl0XdhH0nRjnk9/cno5J8azRbDcrHlNhkrf6uDVyrQS+h8KMWvSo8t+p26YRhB/xShZTPQbEzutHGDAFsB18nRmwn0=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.8,REQID:b3c4d219-f0c5-403a-b01c-3e5e627b973c,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:b3c4d219-f0c5-403a-b01c-3e5e627b973c,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:8493eb48-f57f-4088-93dd-066979cdb4e6,C OID:787d7f499164,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: e08cd86b6d3340b08fa8571304e2c95b-20220807 Received: from mtkmbs10n1.mediatek.inc [(172.21.101.34)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1186243766; Sun, 07 Aug 2022 14:58:52 +0800 Received: from mtkmbs11n2.mediatek.inc (172.21.101.187) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.15; Sun, 7 Aug 2022 14:58:50 +0800 Received: from mtksdccf07 (172.21.84.99) by mtkmbs11n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.15 via Frontend Transport; Sun, 7 Aug 2022 14:58:50 +0800 Message-ID: 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: Sun, 7 Aug 2022 14:58:50 +0800 In-Reply-To: <98d738ec5d7d32441f6e62278fff32201fd948de.camel@mediatek.com> References: <1978e209e71905d89651e61abd07285912d412a1.camel@mediatek.com> <20220715115938.GA8646@blackbody.suse.cz> <20220719133512.GD897@blackbody.suse.cz> <98d738ec5d7d32441f6e62278fff32201fd948de.camel@mediatek.com> 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 Thu, 2022-07-21 at 14:46 +0800, Jing-Ting Wu wrote: > 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 > Hi, Michal Use the patch of previous mail, we pass the stability test at previous two week and still testing. I think the patch is helpful to the syndrome. It passed stability test over two week so far. (as-is: < one week failed) Do you help to upstream this patch to mainline? Thank you. Best regards, Jing-Ting Wu > > Best regards, > Jing-Ting Wu