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This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

** Changed in: linux (Ubuntu Jammy)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/2003816

Title:
  Regression in ext4 during online resize

Status in linux package in Ubuntu:
  Incomplete
Status in linux source package in Jammy:
  Incomplete

Bug description:
  Issue

  resize2fs utility is used to resize the filesystem and is idempotent
  in nature. But in the 5.15 kernel, successive execution of resize2fs
  is returning error.

  Reproduction step (on AWS):

      Create an AWS instance with AMI ami-056a67ea1b8ffa0fc (Linux 
5.15.0-1022-aws) in us-west-2 region and attach an EBS volume.
      Format and mount the disk - sudo mkfs.ext4 /dev/xvdb, sudo mkdir -p 
/mnt/ssd0, sudo mount /dev/xvdb /mnt/ssd0
      Increase the size of EBS volume.
      Run sudo resize2fs /dev/xvdb multiple times.

  The first execution returns -

  $ sudo resize2fs /dev/xvdb
  resize2fs 1.45.5 (07-Jan-2020)
  Filesystem at /dev/xvdb is mounted on /mnt/ssd0; on-line resizing required
  old_desc_blocks = 2, new_desc_blocks = 3
  The filesystem on /dev/xvdb is now 5242880 (4k) blocks long.

  The following execution returns -

  $ sudo resize2fs /dev/xvdb
  resize2fs 1.45.5 (07-Jan-2020)
  The filesystem is already 5242880 (4k) blocks long.  Nothing to do!

  When you run the same step on the latest image ami-0a1d6d351894df6cc
  (Linux 5.15.0-1026-aws).

  The first execution returns -

  $ sudo resize2fs /dev/xvdb
  resize2fs 1.45.5 (07-Jan-2020)
  Filesystem at /dev/xvdb is mounted on /mnt/ssd0; on-line resizing required
  old_desc_blocks = 2, new_desc_blocks = 3
  The filesystem on /dev/xvdb is now 5242880 (4k) blocks long.

  The following execution returns

  $ sudo resize2fs /dev/xvdb
  resize2fs 1.45.5 (07-Jan-2020)
  resize2fs: Superblock checksum does not match superblock while trying to open 
/dev/xvdb
  Couldn't find valid filesystem superblock.


  FIX:

  
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=a408f33e895e455f16cf964cb5cd4979b658db7b

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