From: Eric Biggers <ebiggers3@gmail.com>
To: Dave Jiang <dave.jiang@intel.com>
Cc: alison.schofield@intel.com, keescook@chromium.org,
linux-nvdimm@lists.01.org, dhowells@redhat.com,
keyrings@vger.kernel.org
Subject: Re: [PATCH v5 04/12] nfit/libnvdimm: add unlock of nvdimm support for Intel DIMMs
Date: Tue, 17 Jul 2018 17:00:50 -0700 [thread overview]
Message-ID: <20180718000050.GD176997@gmail.com> (raw)
In-Reply-To: <153186086679.27463.8719157064779944587.stgit@djiang5-desk3.ch.intel.com>
Again, just a couple superficial comments:
On Tue, Jul 17, 2018 at 01:54:26PM -0700, Dave Jiang wrote:
> Add support to allow query the security status of the Intel nvdimms and
> also unlock the dimm via the kernel key management APIs. The passphrase is
> expected to be pulled from userspace through keyutils. Moving the Intel
> related bits to its own source file as well.
>
> Signed-off-by: Dave Jiang <dave.jiang@intel.com>
> Reviewed-by: Dan Williams <dan.j.williams@intel.com>
> ---
> drivers/acpi/nfit/Makefile | 1
> drivers/acpi/nfit/core.c | 3 +
> drivers/acpi/nfit/intel.c | 151 ++++++++++++++++++++++++++++++++++++++++++++
> drivers/acpi/nfit/intel.h | 16 +++++
> drivers/nvdimm/dimm.c | 7 ++
> drivers/nvdimm/dimm_devs.c | 108 +++++++++++++++++++++++++++++++
> drivers/nvdimm/nd-core.h | 2 +
> drivers/nvdimm/nd.h | 2 +
> include/linux/libnvdimm.h | 23 ++++++-
> 9 files changed, 310 insertions(+), 3 deletions(-)
> create mode 100644 drivers/acpi/nfit/intel.c
[...]
> +
> +struct nvdimm_security_ops intel_security_ops = {
> + .state = intel_dimm_security_state,
> + .unlock = intel_dimm_security_unlock,
> +};
nvdimm_security_ops should be marked 'const'.
> +/*
> + * Find key in kernel keyring
> + */
> +static struct key *nvdimm_search_key(struct device *dev)
> +{
> + struct nvdimm *nvdimm = to_nvdimm(dev);
> + char *desc;
> + key_ref_t keyref;
> + struct key *key = NULL;
> +
> + if (!nvdimm->security_ops)
> + return NULL;
> +
> + desc = kzalloc(NVDIMM_KEY_DESC_LEN, GFP_KERNEL);
> + if (!desc)
> + return NULL;
> +
> + keyref = keyring_search(make_key_ref(nvdimm_cred->thread_keyring, 1),
> + &nvdimm_key_type, nvdimm->dimm_id);
> + if (IS_ERR(keyref))
> + key = NULL;
> + else
> + key = key_ref_to_ptr(keyref);
> +
> + kfree(desc);
> + return key;
> +}
'desc' is allocated and never used.
And with that removed, NVDIMM_KEY_DESC_LEN isn't actually used either.
- Eric
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next prev parent reply other threads:[~2018-07-18 0:00 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-17 20:54 [PATCH v5 00/12] Adding security support for nvdimm Dave Jiang
2018-07-17 20:54 ` [PATCH v5 01/12] nfit: add support for Intel DSM 1.7 commands Dave Jiang
2018-07-18 17:02 ` Elliott, Robert (Persistent Memory)
2018-07-17 20:54 ` [PATCH v5 02/12] libnvdimm: create keyring to store security keys Dave Jiang
2018-07-17 23:56 ` Eric Biggers
2018-07-17 20:54 ` [PATCH v5 03/12] nfit/libnvdimm: store dimm id as a member to struct nvdimm Dave Jiang
2018-07-18 15:40 ` Elliott, Robert (Persistent Memory)
2018-07-18 15:49 ` Dave Jiang
2018-07-17 20:54 ` [PATCH v5 04/12] nfit/libnvdimm: add unlock of nvdimm support for Intel DIMMs Dave Jiang
2018-07-18 0:00 ` Eric Biggers [this message]
2018-07-17 20:54 ` [PATCH v5 05/12] keys: add call key_put_sync() to flush key_gc_work when doing a key_put() Dave Jiang
2018-07-17 23:53 ` Eric Biggers
2018-07-17 23:58 ` Dave Jiang
2018-07-17 20:54 ` [PATCH v5 06/12] nfit/libnvdimm: add set passphrase support for Intel nvdimms Dave Jiang
2018-07-17 20:54 ` [PATCH v5 07/12] nfit/libnvdimm: add disable passphrase support to Intel nvdimm Dave Jiang
2018-07-17 20:54 ` [PATCH v5 08/12] nfit/libnvdimm: add freeze security " Dave Jiang
2018-07-17 20:54 ` [PATCH v5 09/12] nfit/libnvdimm: add support for issue secure erase DSM " Dave Jiang
2018-07-18 17:27 ` Elliott, Robert (Persistent Memory)
2018-07-18 17:41 ` Dave Jiang
2018-07-19 1:43 ` Elliott, Robert (Persistent Memory)
2018-07-19 6:09 ` Li, Juston
2018-07-19 20:06 ` Dave Jiang
2018-07-17 20:55 ` [PATCH v5 10/12] nfit_test: add context to dimm_dev for nfit_test Dave Jiang
2018-07-17 20:55 ` [PATCH v5 11/12] nfit_test: add test support for Intel nvdimm security DSMs Dave Jiang
2018-07-17 20:55 ` [PATCH v5 12/12] libnvdimm: add documentation for nvdimm security support Dave Jiang
2018-07-17 23:26 ` [PATCH v5 00/12] Adding security support for nvdimm Eric Biggers
2018-07-17 23:37 ` Dave Jiang
2018-07-18 10:40 ` [PATCH v5 05/12] keys: add call key_put_sync() to flush key_gc_work when doing a key_put() David Howells
2018-07-18 10:50 ` [PATCH v5 02/12] libnvdimm: create keyring to store security keys David Howells
2018-07-18 19:40 ` Dave Jiang
2018-07-18 20:38 ` David Howells
2018-07-18 11:14 ` [PATCH v5 06/12] nfit/libnvdimm: add set passphrase support for Intel nvdimms David Howells
2018-07-18 16:05 ` Dave Jiang
2018-07-18 19:47 ` Dave Jiang
2018-07-18 20:41 ` David Howells
2018-07-18 20:47 ` Dave Jiang
2018-07-19 0:28 ` Dave Jiang
2018-07-19 8:22 ` David Howells
2018-07-19 21:28 ` Dave Jiang
2018-07-20 0:04 ` Dave Jiang
2018-07-20 15:40 ` David Howells
2018-07-20 16:40 ` Dave Jiang
2018-08-02 11:07 ` David Howells
2018-07-18 11:17 ` [PATCH v5 05/12] keys: add call key_put_sync() to flush key_gc_work when doing a key_put() David Howells
2018-07-18 11:20 ` [PATCH v5 06/12] nfit/libnvdimm: add set passphrase support for Intel nvdimms David Howells
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