linux-kernel - RE: [PATCH 0/2] x86/tdx: Fix one more load_unaligned

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: <SA1PR21MB13352E2075766916B0D675C0BF47A@SA1PR21MB1335.namprd21.prod.outlook.com>
Date:   Fri, 26 May 2023 02:35:04 +0000
From:   Dexuan Cui <decui@...rosoft.com>
To:     "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
        "dave.hansen@...el.com" <dave.hansen@...el.com>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "bp@...en8.de" <bp@...en8.de>
CC:     "rick.p.edgecombe@...el.com" <rick.p.edgecombe@...el.com>,
        "sathyanarayanan.kuppuswamy@...ux.intel.com" 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>,
        "seanjc@...gle.com" <seanjc@...gle.com>,
        "thomas.lendacky@....com" <thomas.lendacky@....com>,
        "x86@...nel.org" <x86@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH 0/2] x86/tdx: Fix one more load_unaligned_zeropad() issue

> From: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
> Sent: Thursday, May 25, 2023 3:59 PM
>  ...
> During review of TDX guests on Hyper-V patchset Dave pointed to the
> potential race between changing page private/shared status and
> load_unaligned_zeropad().
> 
> Fix the issue.

Hi Kirill, I tested the patches on Hyper-V, and didn't find any issue.

Thanks for the patches! It looks like the patches can address Dave's
concerns. I'll wait for your patches to go in first, and then I'll rebase
my patches.

Thanks,
Dexuan