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[Bug 1820898] Re: grub in xenial fails to read pc-linux 4.15 kernel snap

 

This bug was fixed in the package grub2 - 2.02~beta2-36ubuntu3.21

---------------
grub2 (2.02~beta2-36ubuntu3.21) xenial; urgency=medium

  * debian/patches/squash4-fix-fragments-and-sparse-files.patch: Cherry-pick
    upstream patch to fix handling of fragments and sparse files in squashfs
    filesystems (LP: #1820898).

 -- Colin Watson <cjwatson@xxxxxxxxxx>  Wed, 20 Mar 2019 00:31:55 +0000

** Changed in: grub2 (Ubuntu Xenial)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1820898

Title:
  grub in xenial fails to read pc-linux 4.15 kernel snap

Status in grub2 package in Ubuntu:
  Fix Released
Status in grub2 source package in Xenial:
  Fix Released

Bug description:
  The grub version in xenial fails to read the pc-kernel 4.15 kernel
  snap.

  [Test Case] To reproduce (thanks to Colin for the grub-fstest hint):

  $ snap download pc-kernel --channel 18
  $ grub-fstest pc-kernel_192.snap crc /vmlinuz

  This fails with the xenial grub with:
  grub-fstest: error: read error at offset 8096256: invalid xz chunk.

  but it should work (it works correctly with the grub2 from bionic and
  later).

  Colin pointed to
  https://git.savannah.gnu.org/cgit/grub.git/commit/?id=951306c5094d2bfb46d5baedfde84a2015c4a3fa
  which may fix the issue.

  [Regression Potential] The fix is in GRUB's squash4 module, so only
  workloads that involve reading squashfses could be affected.

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References