From: Mimi Zohar <zohar-tEXmvtCZX7AybS5Ee8rs3A@public.gmane.org>
To: Dan Williams
<dan.j.williams-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
James Bottomley <jejb-tEXmvtCZX7AybS5Ee8rs3A@public.gmane.org>
Cc: "linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org"
<linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org>,
Roberto Sassu
<roberto.sassu-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>,
Linux Kernel Mailing List
<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Jarkko Sakkinen
<jarkko.sakkinen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>,
David Howells <dhowells-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
keyrings-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH] security/keys/trusted: Allow operation without hardware TPM
Date: Tue, 19 Mar 2019 18:56:29 -0400 [thread overview]
Message-ID: <1553036189.4899.136.camel@linux.ibm.com> (raw)
In-Reply-To: <CAA9_cmcOD2zPaaNbkYAaH5DRDRAebPkW+hwPA0zPKY4kU8R-rg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
Hi Dan,
On Mon, 2019-03-18 at 17:30 -0700, Dan Williams wrote:
Sorry for the late reply.
> On Mon, Mar 18, 2019 at 5:24 PM James Bottomley <jejb@linux.ibm.com> wrote:
> >
> > On Mon, 2019-03-18 at 16:45 -0700, Dan Williams wrote:
> > > Rather than fail initialization of the trusted.ko module, arrange for
> > > the module to load, but rely on trusted_instantiate() to fail
> > > trusted-key operations.
> >
> > What actual problem is this fixing? To me it would seem like an
> > enhancement to make the trusted module fail at load time if there's no
> > TPM rather than waiting until first use to find out it can never work.
> > Is there some piece of user code that depends on the successful
> > insertion of trusted.ko?
>
> The module dependency chain relies on it. If that can be broken that
> would also be an acceptable fix.
>
> I found this through the following dependency chain: libnvdimm.ko ->
> encrypted_keys.ko -> trusted.ko.
>
> "key_type_trusted" is the symbol that encrypted_keys needs regardless
> of whether the tpm is present.
Commit 982e617a313b ("encrypted-keys: remove trusted-keys dependency")
removed the dependency on trusted keys. masterkey_trusted.c should
only be included if "CONFIG_TRUSTED_KEYS" is enabled. Is
CONFIG_TRUSTED_KEYS enabled?
Mimi
_______________________________________________
Linux-nvdimm mailing list
Linux-nvdimm@lists.01.org
https://lists.01.org/mailman/listinfo/linux-nvdimm
next prev parent reply other threads:[~2019-03-19 22:56 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-18 23:45 [PATCH] security/keys/trusted: Allow operation without hardware TPM Dan Williams
[not found] ` <155295271345.1945351.6465460744078693578.stgit-p8uTFz9XbKj2zm6wflaqv1nYeNYlB/vhral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2019-03-19 0:24 ` James Bottomley
2019-03-19 0:30 ` Dan Williams
[not found] ` <CAA9_cmcOD2zPaaNbkYAaH5DRDRAebPkW+hwPA0zPKY4kU8R-rg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2019-03-19 0:56 ` James Bottomley
2019-03-19 1:34 ` Dan Williams
2019-03-20 1:55 ` Dan Williams
[not found] ` <CAPcyv4hXKQcdLnKG6rPNOJr2wjq31uCCr+16S5Yu6S5A_5UGrA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2019-03-20 2:19 ` James Bottomley
2019-03-19 22:56 ` Mimi Zohar [this message]
2019-03-19 23:01 ` Dan Williams
2019-03-21 13:54 ` Jarkko Sakkinen
2019-03-21 14:26 ` Roberto Sassu
2019-03-21 16:30 ` Dan Williams
[not found] ` <CAPcyv4gc_KWedC12bTcX24KwjKiBCF=yvouRNzCbJKaLrgJdDg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2019-03-21 17:45 ` Roberto Sassu
2019-03-22 10:12 ` Jarkko Sakkinen
2019-03-22 15:24 ` Dan Williams
2019-03-25 14:12 ` Jarkko Sakkinen
2019-03-25 14:50 ` Jarkko Sakkinen
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1553036189.4899.136.camel@linux.ibm.com \
--to=zohar-texmvtczx7aybs5ee8rs3a@public.gmane.org \
--cc=dan.j.williams-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org \
--cc=dhowells-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org \
--cc=jarkko.sakkinen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org \
--cc=jejb-tEXmvtCZX7AybS5Ee8rs3A@public.gmane.org \
--cc=keyrings-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org \
--cc=roberto.sassu-hv44wF8Li93QT0dZR+AlfA@public.gmane.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).