[Bug 1311247] Re: [Grubenv] error: malformed file, press any key to continue

[dino99]

So to resume, what we surely know ?

The "malformed file" appear if more than one block is used : so the
question of multiple blocks

The actual grub used (2.02~beta2.10) has not having that issue when kernel prior to 3.15 is used
That issue appear with ext4 partition

So this seems related to how the recent kernels now work with ext4 and
how grub do. Browsing the grub upstream list bugs, i feel the main cause
is reported as : http://savannah.gnu.org/bugs/?42466

and the new ext4 kernel rule:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/fs/ext4/namei.c?id=455c6fdbd219161bd09b1165f11699d6d73de11c#n2831

** Bug watch added: GNU Savannah Bug Tracker #42466
   http://savannah.gnu.org/bugs/?42466

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https://bugs.launchpad.net/bugs/1311247

Title:
  [Grubenv] error: malformed file, press any key to continue

Status in GRand Unified Bootloader:
  Unknown
Status in “grub2” package in Ubuntu:
  Confirmed

Bug description:
  I have just upgraded from 12.04 to 14.04

  Since the upgrade, when I boot up, the process stops and the normal
  grub screen is replaced after a short while by a message saying

  "error: malformed file, press any key to continue"

  Pressing a key allows booting to continue.

  Someone else who experienced this found that the problem went away
  after having re-installed grub.  I tried this but this did not resolve
  the problem for me.

  synaptic reports the grub package as 2.02~beta2-9

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