linux-kernel - Re: [PATCH 4.4 00/37] 4.4.110-stable review

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Date:   Thu, 11 Jan 2018 13:36:50 -0500
From:   Pavel Tatashin <pasha.tatashin@...cle.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Andy Lutomirski <luto@...nel.org>, Hugh Dickins <hughd@...gle.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Thomas Voegtle <tv@...96.de>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Shuah Khan <shuahkh@....samsung.com>, patches@...nelci.org,
        Ben Hutchings <ben.hutchings@...ethink.co.uk>,
        lkft-triage@...ts.linaro.org, stable <stable@...r.kernel.org>,
        Steve Sistare <steven.sistare@...cle.com>
Subject: Re: [PATCH 4.4 00/37] 4.4.110-stable review

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.

View attachment "0001-x86-pti-efi-broken-conversion-from-efi-to-kernel-pag.patch" of type "text/x-patch" (4201 bytes)