Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751660AbeADAig (ORCPT + 1 other); Wed, 3 Jan 2018 19:38:36 -0500 Received: from mail-oi0-f50.google.com ([209.85.218.50]:38469 "EHLO mail-oi0-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751311AbeADAie (ORCPT ); Wed, 3 Jan 2018 19:38:34 -0500 X-Google-Smtp-Source: ACJfBotthF6DYdVHe0pE2feF9TH61vbD+lXgmf3WEb9d+FJNMeaAf7GSpEPmUOEAyCglDUiS1z2mEw== Date: Wed, 3 Jan 2018 16:38:30 -0800 From: Benjamin Gilbert To: Andy Lutomirski Cc: Thomas Gleixner , Ingo Molnar , Greg Kroah-Hartman , x86@kernel.org, LKML , linux-mm@kvack.org, stable@vger.kernel.org, Andy Lutomirski , Dave Hansen , Peter Zijlstra Subject: Re: "bad pmd" errors + oops with KPTI on 4.14.11 after loading X.509 certs Message-ID: <20180104003830.GB1654@trogon.sfo.coreos.systems> References: <20180103084600.GA31648@trogon.sfo.coreos.systems> <20180103092016.GA23772@kroah.com> <20180103154833.fhkbwonz6zhm26ax@gmail.com> <20180103223222.GA22901@trogon.sfo.coreos.systems> <20180103224902.GB22901@trogon.sfo.coreos.systems> <69DD36C3-193E-4DCA-91A6-915BF3B434F7@amacapital.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <69DD36C3-193E-4DCA-91A6-915BF3B434F7@amacapital.net> User-Agent: Mutt/1.9.1 (2017-09-22) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Return-Path: On Wed, Jan 03, 2018 at 04:27:04PM -0800, Andy Lutomirski wrote: > How much memory does the affected system have? It sounds like something > is mapped in the LDT region and is getting corrupted because the LDT code > expects to own that region. We've seen this on systems from 1 to 7 GB. --Benjamin Gilbert