lkml.org 
[lkml]   [2019]   [Aug]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH v2] KEYS: trusted: allow module init if TPM is inactive or deactivated
From
Date
On 8/2/2019 5:30 PM, Tyler Hicks wrote:
> On 2019-08-02 17:07:33, Roberto Sassu wrote:
>> Commit c78719203fc6 ("KEYS: trusted: allow trusted.ko to initialize w/o a
>> TPM") allows the trusted module to be loaded even a TPM is not found to
> ^ if
>
>> avoid module dependency problems.
>>
>> However, trusted module initialization can still fail if the TPM is
>> inactive or deactivated. This patch ignores tpm_get_random() errors in
>> init_digests() and returns -EFAULT in pcrlock() if the TPM didn't return
>> random data.
>>
>> Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
>
> The code changes look correct to me.
>
> Reviewed-by: Tyler Hicks <tyhicks@canonical.com>
>
> For whoever takes this patch through their tree, I think that adding the
> following Fixes tag would be useful (as well as cc'ing stable):
>
> Fixes: 240730437deb ("KEYS: trusted: explicitly use tpm_chip structure...")
>
> I think it is also worth leaving a short note, in the commit message,
> for backporters that commit 782779b60faa ("tpm: Actually fail on TPM
> errors during "get random"") should be included with any backports of
> this patch.

Right, thanks. I wait for Jarkko's comments and I add both the Fixes tag
and the short note in the next version of the patch.

Roberto

--
HUAWEI TECHNOLOGIES Duesseldorf GmbH, HRB 56063
Managing Director: Li Peng, Li Jian, Shi Yanli

\
 
 \ /
  Last update: 2019-08-02 17:36    [W:0.045 / U:1.348 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site