This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
eoan' to 'verification-done-eoan'. If the problem still exists, change
the tag 'verification-needed-eoan' to 'verification-failed-eoan'.

If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!


** Tags added: verification-needed-eoan

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https://bugs.launchpad.net/bugs/1850234

Title:
  Fix signing of staging modules in eoan

Status in linux package in Ubuntu:
  Fix Committed
Status in linux source package in Eoan:
  Fix Committed

Bug description:
  SRU Justification

  Impact: Staging drivers should not be signed, apart from a small list
  of selected modules in drivers/staging/signature-inclusion in the
  Ubuntu kernel source trees. Changes in eoan to the code which adds
  .gnu_debuglink sections and re-signs modules broke this, resulting in
  all staging modules being signed.

  Fix: Check for a signature on the module before adding the
  .gnu_debuglink section, and only sign the result if the original was
  signed.

  Test Case: Attached script which compares the built modules to the
  signature inclusion file and prints out any modules which are signed
  but not expected to be signed, and vice versa.

  Regression Potential: Unsigned modules cannot be loaded under
  lockdown, which is automatically enabled under secure boot. Some may
  have been using erroneously signed modules under secure boot and will
  no longer be able to do so.

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