1. For xen 4.3.0, you’d better enable XSM security module. 2. share your vtpmmgr / vtpm instance log. 3. Clear vtpm / vtpmmgr disk, do it again.
Quan From: xen-devel-boun...@lists.xen.org [mailto:xen-devel-boun...@lists.xen.org] On Behalf Of Zhenyang Feng Sent: Wednesday, September 09, 2015 4:40 AM To: xen-de...@lists.xenproject.org Subject: [Xen-devel] vTPM ownership problem Hello everyone, I need to use vTPM to finish a project but I encounter the same problem as http://lists.xenproject.org/archives/html/xen-devel/2015-06/msg03930.html I followed the steps explained in https://mhsamsal.wordpress.com/2013/12/05/configuring-virtual-tpm-vtpm-for-xen-4-3-guest-virtual-machines/. I'm running Ubuntu 14.04 as Dom0 on Dell. I compiled Xen 4.3.0 from source. After creating vtpmmgr and vtpm stubdoms, and DomU, I can invoke tpm_version as well as cat /sys/class/misc/tpm0/device/pcrs from DomU: However, I cannot take ownership of vTPM and thus I fail to execute the commands required ownership of vTPM. When I invoke takeownership(I set SRK password to null) I get the following error: root@tpm-guest:~# tpm_takeownership Enter owner password: Confirm password: Enter SRK password: Confirm password: Tspi_TPM_TakeOwnership failed: 0x00002004 - layer=tcs, code=0004 (4), Internal software error root@tpm-guest:~# tpm_takeownership -z -y -l debug Tspi_Context_Create success Tspi_Context_Connect success Tspi_Context_GetTpmObject success Tspi_GetPolicyObject success Tspi_Policy_SetSecret success Tspi_Context_CreateObject success Tspi_GetPolicyObject success Tspi_Policy_SetSecret success Tspi_TPM_TakeOwnership failed: 0x00002004 - layer=tcs, code=0004 (4), Internal software error Tspi_Context_CloseObject success Tspi_Context_FreeMemory success Tspi_Context_Close success I have just upgraded to Ubuntu 15.04 as the reply said but get the same error again. Could you help me handle it? Thank you very much. Best, DearFuture
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