[tpm2] Re: abrmd crashing - how to debug?

[Kenneth Goldman <kgoldman at us.ibm.com>]

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> From: Tadeusz Struk <tstruk(a)gmail.com>
> To: Kenneth Goldman <kgoldman(a)us.ibm.com>, tpm2(a)lists.01.org
> Date: 03/09/2021 02:51 PM
> Subject: [EXTERNAL] Re: [tpm2] abrmd crashing - how to debug?
>
> Hi Ken,
> On 3/5/21 2:29 PM, Kenneth Goldman wrote:
> > Ubuntu focal with WSL, abrmd compiled from source
> >
> > After about 5 minutes of sending commands, abrmd crashes. I
> originally found it with keylime, but I can reproduce it with a
> simple bash loop on pcrread.
> >
> > abrmd exits, the tool output is:
> >
> > ** (process:21067): CRITICAL **: 17:25:10.862: failed to allocate
> dbus proxy object: Could not connect: Connection refused
> > WARNING:tcti:src/tss2-tcti/tctildr.c:79:tcti_from_init() TCTI init
> for function 0x7ff5f6dbbe10 failed with a0008
> > WARNING:tcti:src/tss2-tcti/tctildr.c:109:tcti_from_info() Could
> not initialize TCTI named: tcti-abrmd
> > ERROR:tcti:src/tss2-tcti/tctildr-dl.c:154:tcti_from_file() Could
> not initialize TCTI file: tabrmd
> > ERROR:tcti:src/tss2-tcti/tctildr.c:416:Tss2_TctiLdr_Initialize_Ex
> () Failed to instantiate TCTI
> > ERROR: Could not load tcti, got:
"tabrmd:bus_name=com.intel.tss2.Tabrmd"
> >
> > How would I debug?
> >
> > I would expect that nothing that a single application does should
> crash abrmd.
>
> I think it's not the abrmd that's failing, but the application that
> is trying to
> use tcti-abrmd to communicate with abrmd running in the background.
> It can not get the dbus handler so it just prints an error and fails.
> Can you look for some system dbus logs to see if there are any errors
there?

Sorry, but abrmd exits - with no error message.  Its window just goes back
to
the command prompt.  I'd call that a crash, assuming it should never exit.

If you tell me where 'the system dbus logs' are, I'd be willing
to post them.




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