From: Jarkko Sakkinen <jarkko@kernel.org>
To: "Michal Suchánek" <msuchanek@suse.de>
Cc: Jonathan McDowell <noodles@earth.li>, linux-integrity@vger.kernel.org
Subject: Re: TPM operation times out (very rarely)
Date: Thu, 27 Mar 2025 15:15:22 +0200 [thread overview]
Message-ID: <Z-VPaqDKMo2RR61w@kernel.org> (raw)
In-Reply-To: <Z-VLTKkB_-PoNAly@kitsune.suse.cz>
On Thu, Mar 27, 2025 at 01:57:48PM +0100, Michal Suchánek wrote:
> This does not address the other problem that when the rimeout triggers
> on something like LOAD CONTEXT then the kernel and the TPM don't agree
> on what the state of the context is.
In the case of tpm2-sessions, and in-kernel callers, we could try to
improve the situation in some of the edge cases.
Out-of-my sleeve ideas:
1. E.g., tpm2_load_null() could potentially have retries instead of
single trial.
2. Perhaps timeout in tpm_tis should be adaptive? It could be by
defaault 2s and would grow on trials.
>
> Thanks
>
> Michal
BR, Jarkko
next prev parent reply other threads:[~2025-03-27 13:15 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-29 15:27 TPM operation times out (very rarely) Michal Suchánek
2025-01-29 16:02 ` Jonathan McDowell
2025-01-29 16:20 ` Michal Suchánek
2025-01-29 17:14 ` Jonathan McDowell
2025-01-29 17:25 ` Michal Suchánek
2025-01-30 23:31 ` Jarkko Sakkinen
2025-01-31 8:35 ` Michal Suchánek
2025-01-31 10:25 ` Jarkko Sakkinen
2025-01-31 13:02 ` Michal Suchánek
2025-01-31 17:12 ` Jarkko Sakkinen
2025-01-31 17:28 ` Michal Suchánek
2025-01-31 19:31 ` Jarkko Sakkinen
2025-02-05 13:26 ` Michal Suchánek
2025-02-05 13:45 ` Michal Suchánek
2025-02-05 14:29 ` Jonathan McDowell
2025-02-05 15:29 ` Michal Suchánek
2025-02-06 20:35 ` Jarkko Sakkinen
2025-02-07 9:26 ` Jonathan McDowell
2025-02-07 9:40 ` Michal Suchánek
2025-02-07 9:47 ` Jonathan McDowell
2025-02-07 9:58 ` Michal Suchánek
2025-02-10 16:13 ` Jonathan McDowell
2025-02-10 17:30 ` Jarkko Sakkinen
2025-02-08 20:29 ` Jarkko Sakkinen
2025-02-10 16:18 ` Jonathan McDowell
2025-02-10 17:32 ` Jarkko Sakkinen
2025-02-24 13:04 ` Michal Suchánek
2025-03-01 2:13 ` Jarkko Sakkinen
2025-03-05 12:20 ` Michal Suchánek
2025-03-06 22:29 ` Jarkko Sakkinen
2025-03-27 12:57 ` Michal Suchánek
2025-03-27 13:15 ` Jarkko Sakkinen [this message]
2025-02-19 22:29 ` Jonathan McDowell
2025-02-20 8:42 ` Michal Suchánek
2025-02-21 12:44 ` Jonathan McDowell
2025-02-24 12:21 ` Michal Suchánek
2025-02-24 12:56 ` Michal Suchánek
2025-03-01 2:03 ` Jarkko Sakkinen
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