[Bug 1889509] [NEW] grub boot error : "symbol 'grub_calloc' not found

[Jeff Turner]

Public bug reported:

After updating grub2 (to 2.02~beta2-36ubuntu3.26) and rebooting, my
server does not boot:

Booting from Hard Disk 0...
error: symbol `grub_callow' not found.
Entering rescue mode...
grub rescue> _

I rebooted 3 servers in this way (all running Ubuntu 16.04.6 LTS) and
all hung.

A lot of other people are reporting the same problem at:

https://askubuntu.com/questions/1263125/how-to-fix-a-grub-boot-error-symbol-grub-calloc-not-
found.

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

** Attachment added: "Screenshot from AWS of rescue prompt."
   https://bugs.launchpad.net/bugs/1889509/+attachment/5397110/+files/aws_rescue.png

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Title:
  grub boot error : "symbol 'grub_calloc' not found

Status in grub2 package in Ubuntu:
  New

Bug description:
  After updating grub2 (to 2.02~beta2-36ubuntu3.26) and rebooting, my
  server does not boot:

  Booting from Hard Disk 0...
  error: symbol `grub_callow' not found.
  Entering rescue mode...
  grub rescue> _

  I rebooted 3 servers in this way (all running Ubuntu 16.04.6 LTS) and
  all hung.

  A lot of other people are reporting the same problem at:

  https://askubuntu.com/questions/1263125/how-to-fix-a-grub-boot-error-symbol-grub-calloc-not-
  found.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1889509/+subscriptions