Hi Kent,
Kent Yoder wrote:
On Thu, Mar 21, 2013 at 9:01 AM, Ken Goldman <[email protected]> wrote:
The last command is a get cap for an owner evict key at 0A 26 72 C1 and
the error is 'invalid key handle'.
On 3/21/2013 8:13 AM, Jan Just Keijser wrote:
hi *,
this may be related to my previous post on tpm-pkcs11 devices, but since
the last shutdown my TPM device is in an unusable state. Trousers's tcsd
refuses to start, and if I rebuild with --enable-debug I get the
following log:
TCSD tcsd_conf.c:94 platform_class_list_append:
platform_class_list_append start:
TCSD tcsd_conf.c:126 platform_class_list_append: Platform Class Added.
TCSD TCS ps/ps_utils.c:511 init_disk_cache: found 1 valid key(s) on disk.
TCSD TCS tcsi_caps_tpm.c:43 Entering Get Cap
To TPM: 00 C1 00 00 00 12 00 00 00 65 00 00 00 1A 00 00
To TPM: 00 00
TCSD TDDL tddl.c:171 Calling write to driver
TCSD TDDL tddl.c:188 ioctl: (25) Inappropriate ioctl for device
TCSD TDDL tddl.c:189 Falling back to Read/Write device support.
From TPM: 00 C4 00 00 00 1D 00 00 00 00 00 00 00 0F 00 30
From TPM: 01 02 07 0B 00 02 01 42 52 43 4D 00 00
TCSD TCS tcsi_caps_tpm.c:43 Entering Get Cap
To TPM: 00 C1 00 00 00 16 00 00 00 65 00 00 00 01 00 00
To TPM: 00 04 00 00 00 B4
TCSD TDDL tddl.c:171 Calling write to driver
From TPM: 00 C4 00 00 00 0F 00 00 00 00 00 00 00 01 00
TCSD TCS tcsi_caps_tpm.c:43 Entering Get Cap
To TPM: 00 C1 00 00 00 16 00 00 00 65 00 00 00 01 00 00
To TPM: 00 04 00 00 00 B6
TCSD TDDL tddl.c:171 Calling write to driver
From TPM: 00 C4 00 00 00 0F 00 00 00 00 00 00 00 01 00
TCSD TCS tcsi_caps_tpm.c:43 Entering Get Cap
To TPM: 00 C1 00 00 00 16 00 00 00 65 00 00 00 05 00 00
To TPM: 00 04 00 00 01 01
TCSD TDDL tddl.c:171 Calling write to driver
From TPM: 00 C4 00 00 00 12 00 00 00 00 00 00 00 04 00 00
From TPM: 00 18
TCSD TCS tcsi_caps_tpm.c:43 Entering Get Cap
To TPM: 00 C1 00 00 00 16 00 00 00 65 00 00 00 05 00 00
To TPM: 00 04 00 00 01 02
TCSD TDDL tddl.c:171 Calling write to driver
From TPM: 00 C4 00 00 00 12 00 00 00 00 00 00 00 04 00 00
From TPM: 00 01
TCSD TCS tcsi_caps_tpm.c:43 Entering Get Cap
To TPM: 00 C1 00 00 00 16 00 00 00 65 00 00 00 05 00 00
To TPM: 00 04 00 00 01 04
TCSD TDDL tddl.c:171 Calling write to driver
From TPM: 00 C4 00 00 00 12 00 00 00 00 00 00 00 04 00 00
From TPM: 00 00
TCSD TCS tcsi_caps_tpm.c:43 Entering Get Cap
To TPM: 00 C1 00 00 00 16 00 00 00 65 00 00 00 05 00 00
To TPM: 00 04 00 00 01 03
TCSD TDDL tddl.c:171 Calling write to driver
From TPM: 00 C4 00 00 00 12 00 00 00 00 00 00 00 04 42 52
From TPM: 43 4D
TCSD TCS tcsi_caps_tpm.c:43 Entering Get Cap
To TPM: 00 C1 00 00 00 16 00 00 00 65 00 00 00 05 00 00
To TPM: 00 04 00 00 01 0D
TCSD TDDL tddl.c:171 Calling write to driver
From TPM: 00 C4 00 00 00 12 00 00 00 00 00 00 00 04 00 00
From TPM: 00 05
TCSD TCS tcs_caps.c:138 get_max_auths reports 5 auth contexts found
TCSD TCS tcsi_caps_tpm.c:43 Entering Get Cap
To TPM: 00 C1 00 00 00 12 00 00 00 65 00 00 00 07 00 00
To TPM: 00 00
This command was "give me a list of loaded key handles"...
TCSD TDDL tddl.c:171 Calling write to driver
From TPM: 00 C4 00 00 00 1C 00 00 00 00 00 00 00 0E 00 03
From TPM: B8 D9 77 91 FC 2D AF A2 0A 26 72 C1
The tpm returned 3, B8 D9 77 91, FC 2D AF A2, and 0A 26 72 C1.
TCSD TCS tcsi_caps_tpm.c:43 Entering Get Cap
To TPM: 00 C1 00 00 00 16 00 00 00 65 00 00 00 0C 00 00
To TPM: 00 04 B8 D9 77 91
This command is "get me the key status for key" B8 D9 77 91.
TCSD TDDL tddl.c:171 Calling write to driver
From TPM: 00 C4 00 00 00 0A 00 00 00 0C
LOG_RETERR TPM tcsi_caps_tpm.c:52: 0xc
TPM says "invalid key handle" (as Ken mentioned). This shouldn't
happen unless there's an internal tpm error, or someone else is also
talking to your tpm.
tcsd refuses to come up when my laptop is booting; what else could be
talking to the TPM at that time?
TCSD TCS tcsi_caps_tpm.c:43 Entering Get Cap
To TPM: 00 C1 00 00 00 16 00 00 00 65 00 00 00 0C 00 00
To TPM: 00 04 FC 2D AF A2
TCSD TDDL tddl.c:171 Calling write to driver
From TPM: 00 C4 00 00 00 0A 00 00 00 0C
LOG_RETERR TPM tcsi_caps_tpm.c:52: 0xc
Same here...
TCSD TCS tcsi_caps_tpm.c:43 Entering Get Cap
To TPM: 00 C1 00 00 00 16 00 00 00 65 00 00 00 0C 00 00
To TPM: 00 04 0A 26 72 C1
TCSD TDDL tddl.c:171 Calling write to driver
From TPM: 00 C4 00 00 00 0A 00 00 00 0C
LOG_RETERR TPM tcsi_caps_tpm.c:52: 0xc
Same here...
after which tcsd dies; the only way to resurrect the TPM is to CLEAR it
in the BIOS and then ACTIVATE it again - the SRK remains valid, however.
Has anyone seen this before? The TPM chip is on a Dell Latitude E4310 ,
Broadcom based.
This looks like a programming error in tcsd. If we get an error
returned getting the status on the last reported key, we end up
accidentally returning error, which causes an orderly shutdown of the
daemon.
Can you try the attached patch?
the patch works beautifully! But how does the TPM end up in this state?
I can very well imaging that Dell didn't wire things up correctly ;)
cheers,
JJK
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