Bug#873187: linux-image-amd64: Missing tpm_tis module

From	Ben Hutchings <ben@decadent.org.uk>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#873187: linux-image-amd64: Missing tpm_tis module
Date	2017-09-25 00:20 +0200
Message-ID	<utnpL-5Zf-1@gated-at.bofh.it> (permalink)
References	<uilKF-3VD-5@gated-at.bofh.it> <uilKF-3VD-5@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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Control: reassign -1 src:linux 4.9.25-1
Control: tag -1 moreinfo

On Fri, 2017-08-25 at 13:09 +0100, Gregory Stark wrote:
> Package: linux-image-amd64
> Version: 4.9+80+deb9u1
> Severity: normal
> 
> Hi,
> 
> I find that the tpm_tis.ko module is missing in all kernel packages
> since 4.9.0-3 (which is the version in Debian 9 installers and the
> security archive). This includes all more recent kernels that I've
> tried from unstable.
>
> It was present in 4.9.0-2 which makes me wonder if it was removed due
> to some last minute security problem before the release of Debian 9.

It's still included, but built-in.

> However this is a severe problem for users of the 2013 Chromebook
> Pixel as there was a firmware bug that means suspend/resume doesn't
> work unless the tpm chip has been initialized by the module. In other
> words suspend/resume is broken on the 2013 Pixel ever since 4.9.0-3
> but worked fine previously.

Have you actually found this to be broken?  I don't believe such a
failure would be related to the tpm_tis driver, since as I said it is
still included.

> I can't find an existing bug about tpm_tis or any mention of it on the
> list. Perhaps this was done unintentionally?

We didn't deliberately change it to built-in, but this is a result of
enabling IMA.

Ben.
 
-- 
Ben Hutchings
Make three consecutive correct guesses and you will be considered an
expert.

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Bug#873187: linux-image-amd64: Missing tpm_tis module Gregory Stark <stark@mit.edu> - 2017-08-25 14:20 +0200
  Processed: Re: Bug#873187: linux-image-amd64: Missing tpm_tis module owner@bugs.debian.org (Debian Bug Tracking System) - 2017-09-25 00:20 +0200
  Bug#873187: linux-image-amd64: Missing tpm_tis module Ben Hutchings <ben@decadent.org.uk> - 2017-09-25 00:20 +0200

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