[Bug 1807288] Update Released

[Brian Murray]

The verification of the Stable Release Update for e2fsprogs has
completed successfully and the package has now been released to
-updates.  Subsequently, the Ubuntu Stable Release Updates Team is being
unsubscribed and will not receive messages about this bug report.  In
the event that you encounter a regression using the package from
-updates please report a new bug using ubuntu-bug and tag the bug report
regression-update so we can easily find any regressions.

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https://bugs.launchpad.net/bugs/1807288

Title:
  mkfs.ext4 -d $directory_with_acls leads to EINVAL

Status in e2fsprogs package in Ubuntu:
  Fix Released
Status in e2fsprogs source package in Bionic:
  Fix Committed
Status in e2fsprogs source package in Cosmic:
  Fix Released
Status in e2fsprogs source package in Disco:
  Fix Released

Bug description:
  [Justification]
  `mkfs.ext4 -d` can produce broken filesystems when there are acls in the tree used as input.

  [Test case]
  1. dd if=/dev/zero count=0 bs=1M seek=100 of=./fake.img
  2. mkdir -p stuff/journal
  3. sudo apt install acl
  4. setfacl -m g:adm:rwx stuff/journal
  5. mkfs.ext4 -L lala -O -metadata_csum -T default -O uninit_bg fake.img -d ./stuff/
  6. sudo mount ./fake.img /mnt
  7. Verify that `getfacl /mnt/journal/` returns an error.
  8. sudo umount /mnt
  9. install libext2fs2 from -proposed.
  10. mkfs.ext4 -L lala -O -metadata_csum -T default -O uninit_bg fake.img -d ./stuff/
  11. sudo mount ./fake.img /mnt
  12. Verify that `getfacl /mnt/journal/` returns acl information, not an error.
  13. sudo umount /mnt

  [Original description]

  This looks an awful lot like bug 1645232 but that is claimed to be
  fixed:

  mwhudson at ringil:~/tmp$ mkfs.ext4 -V
  mke2fs 1.44.1 (24-Mar-2018)
   Using EXT2FS Library version 1.44.1
  mwhudson at ringil:~/tmp$ dd if=/dev/zero count=0 bs=1M seek=100 of=./fake.img
  0+0 records in
  0+0 records out
  0 bytes copied, 0.0015871 s, 0.0 kB/s
  mwhudson at ringil:~/tmp$ mkdir -p stuff/journal
  mwhudson at ringil:~/tmp$ setfacl -m g:adm:rwx stuff/journal
  mwhudson at ringil:~/tmp$ mkfs.ext4 -L lala -O -metadata_csum -T default -O uninit_bg fake.img -d ./stuff/
  mke2fs 1.44.1 (24-Mar-2018)
  Discarding device blocks: done
  Creating filesystem with 25600 4k blocks and 6400 inodes

  Allocating group tables: done
  Writing inode tables: done
  Creating journal (1024 blocks): done
  Copying files into the device: done
  Writing superblocks and filesystem accounting information: done

  mwhudson at ringil:~/tmp$ sudo mount ./fake.img /mnt
  mwhudson at ringil:~/tmp$ getfacl /mnt/journal/
  getfacl: /mnt/journal/: Invalid argument

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