linux-kernel - Re: [PATCH v1 1/3] virt: tsm: Document size limits for outblob attributes

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: <163b74e8-eede-4872-9319-047db25c0050@linux.intel.com>
Date: Wed, 11 Feb 2026 08:40:46 -0800
From: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@...ux.intel.com>
To: dan.j.williams@...el.com, "Kirill A . Shutemov" <kas@...nel.org>
Cc: Dave Hansen <dave.hansen@...ux.intel.com>,
 Rick Edgecombe <rick.p.edgecombe@...el.com>, x86@...nel.org,
 linux-kernel@...r.kernel.org, linux-coco@...ts.linux.dev
Subject: Re: [PATCH v1 1/3] virt: tsm: Document size limits for outblob
 attributes

Hi Dan,

On 2/10/2026 6:15 PM, dan.j.williams@...el.com wrote:
> Kuppuswamy Sathyanarayanan wrote:
>> The configfs-tsm-report interface can fail with -EFBIG when the
>> attestation report generated by a TSM provider exceeds internal
>> maximums (TSM_REPORT_OUTBLOB_MAX). However, this error condition and
>> its handling are not currently documented in the ABI.
>>
>> Userspace tools need to understand how to interpret various error
>> conditions when reading attestation reports.
>>
>> Document that reads fail with -EFBIG when reports exceed size limits,
>> with guidance on how to resolve them.
>>
>> Reviewed-by: Fang Peter <peter.fang@...el.com>
>> Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@...ux.intel.com>
> 
> Looks good, I will change the subject to:
> 
> "configfs-tsm-report: Document size limits for outblob attributes"

Thanks for the review! Are you planning to apply this with the updated
subject line, or would you like me to send a v2 with the change?

-- 
Sathyanarayanan Kuppuswamy
Linux Kernel Developer