Received: by 2002:ac0:8c9a:0:0:0:0:0 with SMTP id r26csp174854ima; Thu, 31 Jan 2019 14:28:24 -0800 (PST) X-Google-Smtp-Source: ALg8bN6DiSbbgcEPVascENhrT5XPrLy5DmjZ+mSEpB6mXBSx1jjJSISSs4MI0uAtfbPpwB+9+6LQ X-Received: by 2002:a17:902:3283:: with SMTP id z3mr37244865plb.76.1548973704386; Thu, 31 Jan 2019 14:28:24 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1548973704; cv=none; d=google.com; s=arc-20160816; b=G6zEuk+40EXWilEguZtQ6R5a5D9UMkxkhXirxHrD4XPoINxYTgoTU3+98uxDf9sv3f 83hzuE2xn9m/PqThfgCrv9W07ZJ38hmAIsMBQZB9eXTYfoeG++emqC4Qs3HDFm/W6kEz Un5LRi7Aj5tGFtXfdD1T5e767NQnhMnkPbxvFn9aztmn/DRp2Z8K3FEH8G6mFY+bES2g +ukJ2TTZfCzLdpAhYJ3pgiVWG456k6SyArVq7VHKB3AdaeO6hklUz9zGFH6b+hQ9auYM 2pTZrvtraUSEZELNaMxIrnMofCQJwpcXlgxdtL2uUAJihCs63iIPwE7I3m1vjZiDvoFZ yZjw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date; bh=NxfJI2iwVXCk4H0PAUp6IinEB1eZTo7te6H62xrCPTI=; b=In6par5M5VIV6VZ1UUR7+Kf7YLC2xNggjjBrDMQ1DfgoV2c3rA29GlKcYCH0dT3NEq lw7XmIHzCWnQfwJrPskRDK/8Jqhp5/w4Chgarf6ZLh+wbZ1uy0VZwpqwLmdgnPJtcozP gKG5/GYIpsmpu5a1GFDUPLZucozBLTl48WI2q9o8AaUHOB9ezaM2xQHpuxXjDF38/Mqv IMGXceP3H0KytyL0Z+smSU2bnMIDSM9N+zdizylO6U4pCuKUGClNsfRR9lAvmVkTmXHL QDGpkJWVMfI5Cupq/F97PXhQ4WjByVWTQTZQovKdxIbTxfVMac5B/xioM1HHdQLNIE6L Rvaw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id b11si3849919pfo.240.2019.01.31.14.28.09; Thu, 31 Jan 2019 14:28:24 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728651AbfAaUj2 (ORCPT + 99 others); Thu, 31 Jan 2019 15:39:28 -0500 Received: from mga18.intel.com ([134.134.136.126]:6796 "EHLO mga18.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727200AbfAaUj2 (ORCPT ); Thu, 31 Jan 2019 15:39:28 -0500 X-Amp-Result: UNSCANNABLE X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by orsmga106.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 31 Jan 2019 12:39:28 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.56,545,1539673200"; d="scan'208";a="112731526" Received: from tassilo.jf.intel.com (HELO tassilo.localdomain) ([10.7.201.137]) by orsmga006.jf.intel.com with ESMTP; 31 Jan 2019 12:39:27 -0800 Received: by tassilo.localdomain (Postfix, from userid 1000) id C0CE8301201; Thu, 31 Jan 2019 12:39:27 -0800 (PST) Date: Thu, 31 Jan 2019 12:39:27 -0800 From: Andi Kleen To: Cong Wang Cc: Ravi Bangoria , lkml , Jiri Olsa , Peter Zijlstra , linux-perf-users@vger.kernel.org, Arnaldo Carvalho de Melo , eranian@google.com, vincent.weaver@maine.edu, "Naveen N. Rao" Subject: Re: System crash with perf_fuzzer (kernel: 5.0.0-rc3) Message-ID: <20190131203927.GY6118@tassilo.jf.intel.com> References: <7c7ec3d9-9af6-8a1d-515d-64dcf8e89b78@linux.ibm.com> <20190125160056.GG6118@tassilo.jf.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > Yeah, a loop stuck looks really scary inside an NMI handler. > Should I just go ahead to send a patch to remove this warning? > Or probably turn it into a pr_info()? Not at this point. Would need to fix the PMU reset first to be more selective. -Andi