From: Sathyanarayanan Kuppuswamy <sathyanarayanan.kuppuswamy@linux.intel.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
x86@kernel.org, Shuah Khan <shuah@kernel.org>,
"H . Peter Anvin" <hpa@zytor.com>,
"Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>,
Tony Luck <tony.luck@intel.com>, Andi Kleen <ak@linux.intel.com>,
Kai Huang <kai.huang@intel.com>,
Wander Lairson Costa <wander@redhat.com>,
Isaku Yamahata <isaku.yamahata@gmail.com>,
marcelo.cerri@canonical.com, tim.gardner@canonical.com,
khalid.elmously@canonical.com, philip.cox@canonical.com,
linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org,
linux-doc@vger.kernel.org
Subject: Re: [PATCH v12 1/3] x86/tdx: Add TDX Guest attestation interface driver
Date: Thu, 8 Sep 2022 16:53:18 -0700 [thread overview]
Message-ID: <49f7bb67-2f4f-8e06-5420-5b279fdf3199@linux.intel.com> (raw)
In-Reply-To: <Yxl+PE4A+WUfQ7bl@kroah.com>
Hi Dave/Greg,
On 9/7/22 10:31 PM, Greg Kroah-Hartman wrote:
> On Wed, Sep 07, 2022 at 05:27:20PM -0700, Kuppuswamy Sathyanarayanan wrote:
>> + /*
>> + * Per TDX Module 1.0 specification, section titled
>> + * "TDG.MR.REPORT", REPORTDATA length is fixed as
>> + * TDX_REPORTDATA_LEN, TDREPORT length is fixed as
>> + * TDX_REPORT_LEN, and TDREPORT subtype is fixed as
>> + * 0. Also check for valid user pointers.
>> + */
>> + if (!req.reportdata || !req.tdreport || req.subtype ||
>> + req.rpd_len != TDX_REPORTDATA_LEN ||
>> + req.tdr_len != TDX_REPORT_LEN)
>> + return -EINVAL;
>
> You never verify that your reserved[7] fields are actually set to 0,
> which means you can never use them in the future :(
>
> Please fix that up, thanks.
Would you prefer a new posting (v12.1 or v13) with this change, or do you
want to continue the review in the same version?
>
> greg k-h
--
Sathyanarayanan Kuppuswamy
Linux Kernel Developer
next prev parent reply other threads:[~2022-09-08 23:53 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-08 0:27 [PATCH v12 0/3] Add TDX Guest Attestation support Kuppuswamy Sathyanarayanan
2022-09-08 0:27 ` [PATCH v12 1/3] x86/tdx: Add TDX Guest attestation interface driver Kuppuswamy Sathyanarayanan
2022-09-08 5:31 ` Greg Kroah-Hartman
2022-09-08 19:07 ` Sathyanarayanan Kuppuswamy
2022-09-08 20:36 ` Dave Hansen
2022-09-08 20:45 ` Sathyanarayanan Kuppuswamy
2022-09-09 5:26 ` Greg Kroah-Hartman
2022-09-08 23:53 ` Sathyanarayanan Kuppuswamy [this message]
2022-09-09 5:25 ` Greg Kroah-Hartman
2022-09-08 0:27 ` [PATCH v12 2/3] selftests: tdx: Test TDX attestation GetReport support Kuppuswamy Sathyanarayanan
2022-09-08 14:16 ` Wander Lairson Costa
2022-09-08 23:45 ` Sathyanarayanan Kuppuswamy
2022-09-09 13:36 ` Wander Lairson Costa
2022-09-09 18:40 ` Sathyanarayanan Kuppuswamy
2022-09-09 1:55 ` Sathyanarayanan Kuppuswamy
2022-09-09 13:49 ` Dave Hansen
2022-09-09 3:48 ` Huang, Kai
2022-09-09 5:08 ` Sathyanarayanan Kuppuswamy
2022-09-08 0:27 ` [PATCH v12 3/3] Documentation/x86: Document TDX attestation process Kuppuswamy Sathyanarayanan
2022-09-08 9:10 ` Bagas Sanjaya
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