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Subject: Re: [PATCH v8 02/12] libnvdimm: create keyring to store security keys
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From: Dave Jiang <dave.jiang@intel.com>
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Date: Mon, 24 Sep 2018 14:12:45 -0700
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To: David Howells <dhowells@redhat.com>, Dan Williams <dan.j.williams@intel.com>
Cc: "Schofield, Alison" <alison.schofield@intel.com>, Kees Cook <keescook@chromium.org>, linux-nvdimm <linux-nvdimm@lists.01.org>, Eric Biggers <ebiggers3@gmail.com>, keyrings@vger.kernel.org
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On 09/24/2018 02:04 PM, David Howells wrote:
> Dan Williams <dan.j.williams@intel.com> wrote:
> 
>> I think you want to use prepare_kernel_cred(), not export init_cred.
> 
> That only works if the searching is done with the creds generated by
> prepare_kernel_cred().  He probably does want init_cred, or at least
> current_cred() if module loading overrides the creds with init_cred whilst
> initialising the module.
> 
> David
> 

Can I pass in NULL or is some sort of cred is necessary?
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