[Bug 1808069] [NEW] Init corrupted when upgrading to 4.15.0-42

[RS]

Public bug reported:

When upgrading from 4.15.0-39 to 4.15.0-42 on my Ubuntu 18.04.1 NAS
(x86_64) I get the following error on system bootup (freeze):

Failed to execute /init (error -2)
Kernel panic - not syncing: no working init found. 

So apparently the init is broken.

My solution was to remove 4.15.0-42

sudo apt remove linux-image-4.15.0-42 
sudo apt autoremove

and, thus, automatically go back to 4.15.0-39 which works fine.

The autoremove removed amd64-microcode, intel-microcode iucode-tool and
thermald which appear to be needed by -42 only.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubuntu-release-upgrader-core 1:18.04.29
ProcVersionSignature: Ubuntu 4.15.0-39.42-generic 4.15.18
Uname: Linux 4.15.0-39-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: amd64
CrashDB: ubuntu
Date: Wed Dec 12 00:36:04 2018
InstallationDate: Installed on 2013-06-03 (2017 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
Symptom: dist-upgrade
UpgradeStatus: No upgrade log present (probably fresh install)
VarLogDistupgradeAptclonesystemstate.tar.gz:
 Error: command ['pkexec', 'cat', '/var/log/dist-upgrade/apt-clone_system_state.tar.gz'] failed with exit code 127: polkit-agent-helper-1: error response to PolicyKit daemon: GDBus.Error:org.freedesktop.PolicyKit1.Error.Failed: No session for cookie
 Error executing command as another user: Not authorized
 
 This incident has been reported.
VarLogDistupgradeAptlog:
 Log time: 2018-12-12 00:10:47.798784
 Starting pkgProblemResolver with broken count: 0
 Starting 2 pkgProblemResolver with broken count: 0
 Done

** Affects: ubuntu-release-upgrader (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug bionic dist-upgrade

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https://bugs.launchpad.net/bugs/1808069

Title:
  Init corrupted when upgrading to 4.15.0-42

Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  When upgrading from 4.15.0-39 to 4.15.0-42 on my Ubuntu 18.04.1 NAS
  (x86_64) I get the following error on system bootup (freeze):

  Failed to execute /init (error -2)
  Kernel panic - not syncing: no working init found. 

  So apparently the init is broken.

  My solution was to remove 4.15.0-42

  sudo apt remove linux-image-4.15.0-42 
  sudo apt autoremove

  and, thus, automatically go back to 4.15.0-39 which works fine.

  The autoremove removed amd64-microcode, intel-microcode iucode-tool
  and thermald which appear to be needed by -42 only.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubuntu-release-upgrader-core 1:18.04.29
  ProcVersionSignature: Ubuntu 4.15.0-39.42-generic 4.15.18
  Uname: Linux 4.15.0-39-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.5
  Architecture: amd64
  CrashDB: ubuntu
  Date: Wed Dec 12 00:36:04 2018
  InstallationDate: Installed on 2013-06-03 (2017 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  Symptom: dist-upgrade
  UpgradeStatus: No upgrade log present (probably fresh install)
  VarLogDistupgradeAptclonesystemstate.tar.gz:
   Error: command ['pkexec', 'cat', '/var/log/dist-upgrade/apt-clone_system_state.tar.gz'] failed with exit code 127: polkit-agent-helper-1: error response to PolicyKit daemon: GDBus.Error:org.freedesktop.PolicyKit1.Error.Failed: No session for cookie
   Error executing command as another user: Not authorized
   
   This incident has been reported.
  VarLogDistupgradeAptlog:
   Log time: 2018-12-12 00:10:47.798784
   Starting pkgProblemResolver with broken count: 0
   Starting 2 pkgProblemResolver with broken count: 0
   Done

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