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 E272BC433F5 for ; Wed, 2 Mar 2022 12:38:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241812AbiCBMjI (ORCPT ); Wed, 2 Mar 2022 07:39:08 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42944 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231958AbiCBMjG (ORCPT ); Wed, 2 Mar 2022 07:39:06 -0500 Received: from alexa-out.qualcomm.com (alexa-out.qualcomm.com [129.46.98.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1B80F6F4A3; Wed, 2 Mar 2022 04:38:23 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1646224704; x=1677760704; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=UgICb5ciFEnI1dKFbScEEs2FF9Max9eXOAfOpAvRCQw=; b=iQmQBhrTsr8VXw0DOFJbfFMPROqZ661YwZGVD+zbc9Q4UQaCCHytuwn+ dM/Pgju1ZH9x/nOooqi16E40Pk+fA24NVjBmp8guKzVl9Y9b+ZtDZ2InQ v5RvZhXXlrw6WCzEfitWqd0FxTGehmnXD2axFZnWzJeJJ/anLRLTipYTY Q=; Received: from ironmsg-lv-alpha.qualcomm.com ([10.47.202.13]) by alexa-out.qualcomm.com with ESMTP; 02 Mar 2022 04:38:23 -0800 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg-lv-alpha.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Mar 2022 04:38:23 -0800 Received: from nalasex01a.na.qualcomm.com (10.47.209.196) by nasanex01c.na.qualcomm.com (10.47.97.222) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.15; Wed, 2 Mar 2022 04:38:02 -0800 Received: from qian (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.15; Wed, 2 Mar 2022 04:38:01 -0800 Date: Wed, 2 Mar 2022 07:37:59 -0500 From: Qian Cai To: "Huang, Ying" CC: , , "Peter Zijlstra (Intel)" , , Subject: Re: [tip: sched/core] sched/numa: Avoid migrating task to CPU-less node Message-ID: References: <20220214121553.582248-2-ying.huang@intel.com> <164512421264.16921.689831789198253265.tip-bot2@tip-bot2> <87v8wx1850.fsf@yhuang6-desk2.ccr.corp.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <87v8wx1850.fsf@yhuang6-desk2.ccr.corp.intel.com> X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01a.na.qualcomm.com (10.47.209.196) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Mar 02, 2022 at 08:59:55AM +0800, Huang, Ying wrote: > Thanks for reporting! Can you try whether the following debug patch can fix the issue? Yes, it prevents the crash.