linux-kernel - Re: [PATCH 4.9] x86/pti/efi: broken conversion from efi to kernel page table

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20180112135847.iecmcq4r2modzw4n@gmail.com>
Date:   Fri, 12 Jan 2018 14:58:47 +0100
From:   Ingo Molnar <mingo@...nel.org>
To:     Pavel Tatashin <pasha.tatashin@...cle.com>
Cc:     steven.sistare@...cle.com, linux-kernel@...r.kernel.org,
        tglx@...utronix.de, mingo@...hat.com, hpa@...or.com,
        x86@...nel.org, gregkh@...uxfoundation.org, jkosina@...e.cz,
        hughd@...gle.com, dave.hansen@...ux.intel.com, luto@...nel.org,
        torvalds@...ux-foundation.org
Subject: Re: [PATCH 4.9] x86/pti/efi: broken conversion from efi to kernel
 page table


* Pavel Tatashin <pasha.tatashin@...cle.com> wrote:

> The page table order must be increased for EFI table in order to avoid a
> bug where NMI tries to change the page table to kernel page table, while
> efi page table is active.
> 
> For more disccussion about this bug, see this thread:
> http://lkml.iu.edu/hypermail/linux/kernel/1801.1/00951.html
> 
> Signed-off-by: Pavel Tatashin <pasha.tatashin@...cle.com>
> Reviewed-by: Steven Sistare <steven.sistare@...cle.com>
> ---
>  arch/x86/include/asm/pgalloc.h | 11 +++++++++++
>  arch/x86/platform/efi/efi_64.c |  2 +-
>  2 files changed, 12 insertions(+), 1 deletion(-)

Is there a Git tree/branch I could follow to see the very latest v4.9 PTI backport 
commits?

Thanks,

	Ingo