[Bug 1620678] Re: grub2 fails to boot when built using binutils 2.27

[Steve Langasek]

** Changed in: grub2 (Ubuntu)
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1620678

Title:
  grub2 fails to boot when built using binutils 2.27

Status in grub:
  Unknown
Status in grub2 package in Ubuntu:
  Fix Released

Bug description:
  grub2 images built using binutils 2.27 fail to boot or otherwise delay
  boot by showing an error message that requires pressing a key to
  continue.

  Specifically; "no symbol table" and "Aborted. Press any key to
  continue".

  On EFI system, this means no booting, on BIOS/MBR systems, boot can
  still continue after pressing a key.

  Specifically, 'strip --strip-unneeded' used to include a section
  symbols anyway for each existing section, even if it stipped away all
  symbols. This was considered a bug and removed in later versions
  (apparently, at least starting at 2.27; with 2.26.1 the last version
  with this side-effect). This was fixed in binutils 14f2c699.

  Grub2 has some modules without any code or data and that are used only
  to pull in dependencies via .moddeps sections; which would make all
  symbols unneeded and thus stripped.

  A fix exists upstream as
  http://git.savannah.gnu.org/cgit/grub.git/commit/?id=67dba97e4598eaf2deb14da044fbfb1c119cf76f

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