This bug is missing log files that will aid in diagnosing the problem.
While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:

apport-collect 1754078

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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  reenable full variable debugging information within dbgsyms with gcc
  vta cflags

Status in linux package in Ubuntu:

Bug description:
  Due to ubuntu kernel (Ubuntu 4.13.0-36.40-generic 4.13.13) being
  compiled with ""-fno-var-tracking-assignments", the debug symbols
  produced are of lesser quality, i.e. $context variables are not

  E.g.: (systemtap needs to be installed on the system)

  $> stap -L 'kernel.function("reparent_leader")'

  on Fedora (Linux 4.15.6-300.fc27.x86_64) the same command gives:
  kernel.function("reparent_leader@kernel/exit.c:632") $dead:struct list_head* 
$p:struct task_struct* $father:struct task_struct*

  more info:
  SystemTap Release notes (known issues)

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