Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754283AbeAKUMI (ORCPT + 1 other); Thu, 11 Jan 2018 15:12:08 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:56618 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752151AbeAKUMB (ORCPT ); Thu, 11 Jan 2018 15:12:01 -0500 Date: Thu, 11 Jan 2018 21:10:06 +0100 From: Greg Kroah-Hartman To: Pavel Tatashin Cc: Andy Lutomirski , Hugh Dickins , Linus Torvalds , Thomas Voegtle , Linux Kernel Mailing List , Andrew Morton , Guenter Roeck , Shuah Khan , patches@kernelci.org, Ben Hutchings , lkft-triage@lists.linaro.org, stable , Steve Sistare Subject: Re: [PATCH 4.4 00/37] 4.4.110-stable review Message-ID: <20180111201006.GA29756@kroah.com> References: <20180105204557.GA8839@kroah.com> <20180107104540.GB14783@kroah.com> <20180108074645.GA24062@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.9.2 (2017-12-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Return-Path: On Thu, Jan 11, 2018 at 01:36:50PM -0500, Pavel Tatashin wrote: > I have root caused the memory corruption panics/hangs that I've been > experiencing during boot with the latest 4.4.110 kernel. The problem > as was suspected by Andy Lutomirski is with interaction between PTI > and EFI. It may affect any system that has EFI bios. I have not > verified if it can affect any other kernel beside 4.4.110 > > Attached is the fix for this issue with explanations that Steve > Sistare and I developed. Nice, but why does this not show up in 4.9 and 4.14 and Linus's tree as well on this hardware? Nor on the SLES12 SP3 kernel? What is different there that 4.4 requires? That worries me more than your fix (which looks good to me, fwiw.) thanks, greg k-h