Public bug reported:

I'm running Ubuntu 18.04.2 LTS
Version 2.02-2ubuntu8.13 of grub is installed.

When I update my grub.cfg to include dyndbg, such as:

linux   /boot/vmlinuz-5.2.0+ root=UUID=e31d3503-30d5-4021-89ea-
0ac921ce153f ro  console=ttyS0 ignore_loglevel dyndbg="module e1000"

the quotes are not handled properly.

The resulting kernel boot gets -

cat /proc/cmdline | more
BOOT_IMAGE=/boot/vmlinuz-5.2.0+ root=UUID=e31d3503-30d5-4021-89ea-0ac921ce153f 
ro console=ttyS0 ignore_loglevel "dyndbg=module e1000 +p"

As you can see, the first quote in the dyndbg param moved, thus
invalidating the command line, and resulting in dyndbg not taking
effect.

** Affects: grub2 (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1838070

Title:
  Unable to add dyndbg to command line

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