Ben Hutchings writes:
> The code signing service logs every file it signs, along with a hash of
> the detached signature, but I don't know where the logs are so I can't
> comapre with that.

I checked the audit log, but I don't think it will help much.  It
currently records that:

 - 2019-10-21 07:20:03.898781:
   decided to sign 
linux-image-5.3.0-1-amd64-unsigned_5.3.7-1_amd64/[...]/snd-hda-codec-hdmi.ko
   with sha256sum 
3fe77a308b28825f0d18717e073b411246aea9bb753f76f6071b3fc4e60c6005

 - 2019-10-21 07:20:04.175379:
   signature for the file logged
   with sha256sum 
c2a36f35867ae92b8664f4bd2193e70370eb3b92013ea53f3573d2508d3da4cb
   (which matches snd-hda-codec-hdmi.ko.sig in src:linux-signed-amd64)

So linux' sign-file likely produced a truncated file for some reason;
note that ftp-master still uses linux-kbuild-4.9/4.9.189-3+deb9u1.

Ansgar

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