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While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:

apport-collect 1763644

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

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  Ubuntu-4.4.0-120.144 fails to boot on arm64* hardware

Status in linux package in Ubuntu:

Bug description:

  The Ubuntu-4.4.0-120.144 kernel (now in -proposed) fails to boot on
  all arm64 hardware: no console output or any other sign of activity,
  the system freeze just after the bootloader loads vmlinuz, and jumps
  to it.

  We first experienced it on the snapdragon kernel snap in -beta
  (dragonboard 410c) but the bug is arm64 generic, and it affects all
  the arm64 hardware: a thunderx board shows the same exact symptoms.

  The regression came down as part of the 4.4.115 stable update
  ("79e83d1 bpf: introduce BPF_JIT_ALWAYS_ON config") and enabled this
  option that crashes the arm64 kernel on boot.

  [How to test]

  Apply the attached patch, recompile, install and boot.

  [Regression potential]

  None, since the kernel already fails to boot.

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