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[Colin Ian King <1435441@xxxxxxxxxxxxxxxxxx>]

uname -a
Linux ubuntu 3.13.0-49-generic #81-Ubuntu SMP Tue Mar 24 19:29:48 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

Verified with -proposed kernel.

** Tags removed: verification-needed-trusty
** Tags added: verification-done-trusty

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https://bugs.launchpad.net/bugs/1435441

Title:
  btrfs: invalid size on resize ioctl is ignored and not flagged up as
  an error (trusty)

Status in linux package in Ubuntu:
  In Progress

Bug description:
  SRU Justification: (Trusty)

  [Impact]
  Illegal and/or incorrect btrfs resize parameters can be passed to the btrfs_ioctl_resize handler and it is not picked up as an error.

  [Fix]
  upstream commit 9a40f1222a372de77344d85d31f8fe0e1c0e60e7
  "btrfs: filter invalid arg for btrfs resize"

  this is a simple parsing check, risk is low to zero.

  [Testcase]
          # btrfs fi resize -10A  <mnt>
          # btrfs fi resize -10Gaha <mnt>

  These should fail with -EINVAL.  Without the fix, they don't. With the
  fix they do.

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