From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id B2AD621939252 for ; Mon, 10 Apr 2017 08:57:17 -0700 (PDT) From: Jeff Moyer Subject: Re: KASLR causes intermittent boot failures on some systems References: <20170408040837.GD4111@x1> Date: Mon, 10 Apr 2017 11:57:15 -0400 In-Reply-To: <20170408040837.GD4111@x1> (Baoquan He's message of "Sat, 8 Apr 2017 12:08:37 +0800") Message-ID: MIME-Version: 1.0 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-nvdimm-bounces@lists.01.org Sender: "Linux-nvdimm" To: Baoquan He Cc: linux-kernel@vger.kernel.org, linux-nvdimm@lists.01.org, thgarnie@google.com, mingo@kernel.org List-ID: Baoquan He writes: > On 04/07/17 at 10:41am, Jeff Moyer wrote: >> Hi, >> >> commit 021182e52fe01 ("x86/mm: Enable KASLR for physical mapping memory >> regions") causes some of my systems with persistent memory (whether real >> or emulated) to fail to boot with a couple of different crash >> signatures. The first signature is a NMI watchdog lockup of all but 1 >> cpu, which causes much difficulty in extracting useful information from >> the console. The second variant is an invalid paging request, listed >> below. >> >> On some systems, I haven't hit this problem at all. Other systems >> experience a failed boot maybe 20-30% of the time. To reproduce it, >> configure some emulated pmem on your system. You can find directions >> for that here: https://nvdimm.wiki.kernel.org/ > > I got below problem when configure ndctl, didn't find a package named > libkmod: Sorry, you can skip the ndctl step altogether. This is emulated pmem, so the setting won't stick anyway. -Jeff _______________________________________________ Linux-nvdimm mailing list Linux-nvdimm@lists.01.org https://lists.01.org/mailman/listinfo/linux-nvdimm