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[Steve Langasek <1838796@xxxxxxxxxxxxxxxxxx>]

** Changed in: linux-azure (Ubuntu Disco)
       Status: In Progress => Won't Fix

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https://bugs.launchpad.net/bugs/1838796

Title:
  TPM event log does not contain events measured after ExitBootServices

Status in linux package in Ubuntu:
  Won't Fix
Status in linux-azure package in Ubuntu:
  In Progress
Status in linux source package in Xenial:
  Won't Fix
Status in linux-azure source package in Xenial:
  In Progress
Status in linux source package in Disco:
  Won't Fix
Status in linux-azure source package in Disco:
  Won't Fix

Bug description:
  The TPM event log (/sys/kernel/security/tpm0/binary_bios_measurements)
  does not contain any events that are measured by UEFI after the
  kernel's EFI Boot stub calls ExitBootServices().

  This means that PCR values calculated from the event log will not
  match the actual PCR values on the machine for PCR indices into which
  these events are measured.

  There are upstream patches to fix this in the mainline kernel tree: https://lore.kernel.org/lkml/20190520205501.177637-1-matthewgarrett@xxxxxxxxxx/
  ---
  ProblemType: Bug
  ApportVersion: 2.20.9-0ubuntu7.5
  Architecture: amd64
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
  CurrentDesktop: ubuntu:GNOME
  DistroRelease: Ubuntu 18.04
  InstallationDate: Installed on 2019-06-20 (43 days ago)
  InstallationMedia: Ubuntu-Server 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210)
  IwConfig:
   eth0      no wireless extensions.

   lo        no wireless extensions.
  Lspci:

  Lsusb: Error: command ['lsusb'] failed with exit code 1:
  MachineType: Microsoft Corporation Virtual Machine
  Package: linux (not installed)
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 hyperv_fb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.18.0-22-generic root=UUID=fcb8dc9d-4dd3-490f-9f1c-fa6364770bb0 ro
  ProcVersionSignature: Ubuntu 4.18.0-22.23~18.04.1-generic 4.18.20
  RelatedPackageVersions:
   linux-restricted-modules-4.18.0-22-generic N/A
   linux-backports-modules-4.18.0-22-generic  N/A
   linux-firmware                             1.173.3
  RfKill:

  Tags:  bionic
  Uname: Linux 4.18.0-22-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 01/30/2019
  dmi.bios.vendor: Microsoft Corporation
  dmi.bios.version: Hyper-V UEFI Release v4.0
  dmi.board.asset.tag: None
  dmi.board.name: Virtual Machine
  dmi.board.vendor: Microsoft Corporation
  dmi.board.version: Hyper-V UEFI Release v4.0
  dmi.chassis.asset.tag: 8486-4870-7514-9524-5524-7794-69
  dmi.chassis.type: 3
  dmi.chassis.vendor: Microsoft Corporation
  dmi.chassis.version: Hyper-V UEFI Release v4.0
  dmi.modalias: dmi:bvnMicrosoftCorporation:bvrHyper-VUEFIReleasev4.0:bd01/30/2019:svnMicrosoftCorporation:pnVirtualMachine:pvrHyper-VUEFIReleasev4.0:rvnMicrosoftCorporation:rnVirtualMachine:rvrHyper-VUEFIReleasev4.0:cvnMicrosoftCorporation:ct3:cvrHyper-VUEFIReleasev4.0:
  dmi.product.family: Virtual Machine
  dmi.product.name: Virtual Machine
  dmi.product.sku: None
  dmi.product.version: Hyper-V UEFI Release v4.0
  dmi.sys.vendor: Microsoft Corporation

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