Re: [tpmdd-devel] [PATCH] tpm: remove chip_num parameter from in-kernel API

Jason Gunthorpe <[email protected]> Tue, 24 Oct 2017 09:55:26 -0600

Newsgroups	net.sourceforge.lists.tpmdd-devel,org.kernel.vger.keyrings,org.kernel.vger.linux-crypto,org.kernel.vger.linux-integrity,org.kernel.vger.linux-kernel,org.kernel.vger.linux-security-module
Message-ID	<[email protected]>

On Tue, Oct 24, 2017 at 09:21:15PM +0530, PrasannaKumar Muralidharan wrote:

> Please check the RFC [1]. It does use chip id. The rfc has issues and
> has to be fixed but still there could be users of the API.
> 
> 1. https://www.spinics.net/lists/linux-crypto/msg28282.html

That patch isn't safe at all. You need to store a kref to th chip in
the hwrng, not parse a string.

Jason