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[Xense-devel] Re: [Xen-users] vtpm_manager can't run twice in a row

To: Luke <secureboot@xxxxxxxxx>
Subject: [Xense-devel] Re: [Xen-users] vtpm_manager can't run twice in a row
From: Kouichi Yasaki <yasaki.kouichi@xxxxxxxxxxxxxx>
Date: Fri, 21 Sep 2007 09:08:50 +0900
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I also encountered the same error before. In my case, TCSP_UnBind function
have a bug in parameter check. I have reported a patch that fixed my case
by following URL.

How about this patch?

http://lists.xensource.com/archives/html/xen-devel/2007-09/msg00354.html

Kouichi YASAKI

Luke wrote:
Luke wrote:
I can get vtpm_manager to run if I delete /var/vtpm/VTPM.  However, when
I kill it with control-c, and try to run it again, I get:

INFO[VTPM]: Starting VTPM.
INFO[TCS]: Constructing new TCS:
INFO[TCS]: Calling TCS_OpenContext:
INFO[VTSP]: OIAP.
INFO[VTSP]: Loading Key into TPM.
INFO[VTSP]: Unbinding 256 bytes of data.
ERROR in VTSP_Unbind at vtsp.c:720 code: TPM_BAD_PARAMETER.
ERROR in envelope_decrypt at securestorage.c:156 code: TPM_BAD_PARAMETER.
ERROR[VTPM]: Failed to envelope decrypt data
.ERROR in VTPM_LoadManagerData at securestorage.c:459 code:
TPM_BAD_PARAMETER.
ERROR[VTPM]: Failed to load service data with error = TPM_BAD_PARAMETER
ERROR[VTPM]: Failed to read existing manager file


What's causing this, and how do I fix it?  I need my guest to get the
same VTPM every time it starts, so that keys (signing and SRK) persist
across instances.

Just to add a bit of information - this happens after I let
vtpm_managerd take ownership of the tpm.

Is it just that no one uses this program?  Or is this an error specific
to me?

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