Re: [PATCH] tests: add test_response_start_auth_session_no_sessions_2

[Jarkko Sakkinen <jarkko@kernel.org>]

On Tue, Sep 02, 2025 at 04:26:20AM +0300, Jarkko Sakkinen wrote:
> Add a test taken from tpm2sh trace output, which reveals a bug in the
> response parser not catched by previous tests.
> 
> Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
> ---
> This is a embarrassing critical bug and damage from refactorization
> where `tpm_response!` macro was removed which was a compilicated task.
> The bright side is that the quality of test suite also leveled up
> as consequence and missing something as critical as this will become
> factors more difficult.
> 
> Luckily response parsing it not too complicated, and this can be fixed
> quite easily. Dispatcher must be internally updated to pass the runtime
> parsed tag forward (just like it does for cc). I.e. a few macro updates
> should do.

What happened here basically was that I was so focused on command
parsing, which felt more complicated (given e.g. how authorization
area is located) that I made some really unconsidered change on
response parser.

It's easy to fix, and in the end better than having this other way
around.

BR, Jarkko