From: Scott Branden <scott.branden@broadcom.com>
To: Mimi Zohar <zohar@kernel.org>, Kees Cook <keescook@chromium.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Luis Chamberlain <mcgrof@kernel.org>,
Jessica Yu <jeyu@kernel.org>, SeongJae Park <sjpark@amazon.de>,
KP Singh <kpsingh@chromium.org>,
linux-efi@vger.kernel.org, linux-security-module@vger.kernel.org,
linux-integrity@vger.kernel.org, selinux@vger.kernel.org,
linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 00/19] Introduce partial kernel_read_file() support
Date: Mon, 27 Jul 2020 12:18:33 -0700 [thread overview]
Message-ID: <1a46db6f-1c8a-3509-6371-7c77999833f2@broadcom.com> (raw)
In-Reply-To: <1595848589.4841.78.camel@kernel.org>
Hi Mimi/Kees,
On 2020-07-27 4:16 a.m., Mimi Zohar wrote:
> On Fri, 2020-07-24 at 14:36 -0700, Kees Cook wrote:
>> v3:
>> - add reviews/acks
>> - add "IMA: Add support for file reads without contents" patch
>> - trim CC list, in case that's why vger ignored v2
>> v2: [missing from lkml archives! (CC list too long?) repeating changes here]
>> - fix issues in firmware test suite
>> - add firmware partial read patches
>> - various bug fixes/cleanups
>> v1: https://lore.kernel.org/lkml/20200717174309.1164575-1-keescook@chromium.org/
>>
>> Hi,
>>
>> Here's my tree for adding partial read support in kernel_read_file(),
>> which fixes a number of issues along the way. It's got Scott's firmware
>> and IMA patches ported and everything tests cleanly for me (even with
>> CONFIG_IMA_APPRAISE=y).
> Thanks, Kees. Other than my comments on the new
> security_kernel_post_load_data() hook, the patch set is really nice.
>
> In addition to compiling with CONFIG_IMA_APPRAISE enabled, have you
> booted the kernel with the ima_policy=tcb? The tcb policy will add
> measurements to the IMA measurement list and extend the TPM with the
> file or buffer data digest. Are you seeing the firmware measurements,
> in particular the partial read measurement?
I booted the kernel with ima_policy=tcb.
Unfortunately after enabling the following, fw_run_tests.sh does not run.
mkdir /sys/kernel/security
mount -t securityfs securityfs /sys/kernel/security
echo "measure func=FIRMWARE_CHECK" > /sys/kernel/security/ima/policy
echo "appraise func=FIRMWARE_CHECK appraise_type=imasig" > /sys/kernel/security/ima/policy
./fw_run_tests.sh
[ 1296.258052] test_firmware: loading 'test-firmware.bin'
[ 1296.263903] misc test_firmware: loading /lib/firmware/test-firmware.bin failed with error -13
[ 1296.263905] audit: type=1800 audit(1595905754.266:9): pid=5696 uid=0 auid=4294967295 ses=4294967295 subj=kernel op=appraise_data cause=IMA-signature-required comm="fw_namespace" name="/lib/firmware/test-firmware.bin" dev="tmpfs" ino=4592 res=0
[ 1296.297085] misc test_firmware: Direct firmware load for test-firmware.bin failed with error -13
[ 1296.305947] test_firmware: load of 'test-firmware.bin' failed: -13
>
> thanks,
>
> Mimi
next prev parent reply other threads:[~2020-07-27 19:18 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-24 21:36 [PATCH v3 00/19] Introduce partial kernel_read_file() support Kees Cook
2020-07-24 21:36 ` [PATCH v3 01/19] test_firmware: Test platform fw loading on non-EFI systems Kees Cook
2020-07-24 21:36 ` [PATCH v3 02/19] selftest/firmware: Add selftest timeout in settings Kees Cook
2020-07-24 21:36 ` [PATCH v3 03/19] firmware_loader: EFI firmware loader must handle pre-allocated buffer Kees Cook
2020-07-25 10:07 ` Greg Kroah-Hartman
2020-07-25 15:50 ` Kees Cook
2020-07-25 17:20 ` Greg Kroah-Hartman
2020-07-24 21:36 ` [PATCH v3 04/19] fs/kernel_read_file: Remove FIRMWARE_PREALLOC_BUFFER enum Kees Cook
2020-07-27 13:35 ` Mimi Zohar
2020-07-24 21:36 ` [PATCH v3 05/19] fs/kernel_read_file: Remove FIRMWARE_EFI_EMBEDDED enum Kees Cook
2020-07-24 21:36 ` [PATCH v3 06/19] fs/kernel_read_file: Split into separate include file Kees Cook
2020-07-27 14:41 ` Mimi Zohar
2020-07-24 21:36 ` [PATCH v3 07/19] fs/kernel_read_file: Split into separate source file Kees Cook
2020-07-27 14:53 ` Mimi Zohar
2020-07-24 21:36 ` [PATCH v3 08/19] fs/kernel_read_file: Remove redundant size argument Kees Cook
2020-07-27 16:29 ` Mimi Zohar
2020-07-24 21:36 ` [PATCH v3 09/19] fs/kernel_read_file: Switch buffer size arg to size_t Kees Cook
2020-07-27 16:29 ` Mimi Zohar
2020-07-24 21:36 ` [PATCH v3 10/19] fs/kernel_read_file: Add file_size output argument Kees Cook
2020-07-27 16:29 ` Mimi Zohar
2020-07-24 21:36 ` [PATCH v3 11/19] LSM: Introduce kernel_post_load_data() hook Kees Cook
2020-07-27 10:49 ` Mimi Zohar
2020-07-28 19:41 ` Kees Cook
2020-07-24 21:36 ` [PATCH v3 12/19] firmware_loader: Use security_post_load_data() Kees Cook
2020-07-27 10:57 ` Mimi Zohar
2020-07-28 19:43 ` Kees Cook
2020-07-29 16:29 ` Mimi Zohar
2020-07-29 18:10 ` Mimi Zohar
2020-07-29 19:13 ` Kees Cook
2020-07-24 21:36 ` [PATCH v3 13/19] module: Call security_kernel_post_load_data() Kees Cook
2020-07-24 21:36 ` [PATCH v3 14/19] LSM: Add "contents" flag to kernel_read_file hook Kees Cook
2020-07-24 21:36 ` [PATCH v3 15/19] IMA: Add support for file reads without contents Kees Cook
2020-07-27 13:23 ` Mimi Zohar
2020-07-28 19:44 ` Kees Cook
2020-07-28 19:56 ` Greg Kroah-Hartman
2020-07-28 20:12 ` Kees Cook
2020-07-24 21:36 ` [PATCH v3 16/19] fs/kernel_file_read: Add "offset" arg for partial reads Kees Cook
2020-07-24 21:36 ` [PATCH v3 17/19] firmware: Store opt_flags in fw_priv Kees Cook
2020-07-24 21:36 ` [PATCH v3 18/19] firmware: Add request_partial_firmware_into_buf() Kees Cook
2020-07-29 1:17 ` Luis Chamberlain
2020-07-29 6:22 ` Takashi Iwai
2020-07-29 17:43 ` Kees Cook
2020-07-24 21:36 ` [PATCH v3 19/19] test_firmware: Test partial read support Kees Cook
2020-07-25 5:14 ` [PATCH v3 00/19] Introduce partial kernel_read_file() support Scott Branden
2020-07-25 10:05 ` Greg Kroah-Hartman
2020-07-25 15:48 ` Kees Cook
2020-07-27 11:16 ` Mimi Zohar
2020-07-27 19:18 ` Scott Branden [this message]
2020-07-28 18:48 ` Mimi Zohar
2020-07-28 19:56 ` Scott Branden
2020-07-29 1:19 ` Luis Chamberlain
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=1a46db6f-1c8a-3509-6371-7c77999833f2@broadcom.com \
--to=scott.branden@broadcom.com \
--cc=gregkh@linuxfoundation.org \
--cc=jeyu@kernel.org \
--cc=keescook@chromium.org \
--cc=kpsingh@chromium.org \
--cc=linux-efi@vger.kernel.org \
--cc=linux-integrity@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-kselftest@vger.kernel.org \
--cc=linux-security-module@vger.kernel.org \
--cc=mcgrof@kernel.org \
--cc=selinux@vger.kernel.org \
--cc=sjpark@amazon.de \
--cc=zohar@kernel.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).