[PATCH v2 0/5] btrfs-progs: check: Detect invalid dev extents and device items

[Qu Wenruo <wqu@suse.com>]

This patchset can be fetch from github:
https://github.com/adam900710/btrfs-progs/tree/dev_extents_check

Hans van Kranenburg reported a case where btrfs DUP chunk allocator
could allocate invalid dev extents, either overlaps with existing dev
extents or beyond device boundary.

This patchset enhances the btrfs-progs side to detect such problems.
With hand crafted test image for it.

Link: https://www.spinics.net/lists/linux-btrfs/msg82370.html

Changelog:
v2:
  Fix a bug in the 1st patch which makes lowmem mode never checks
  overlap dev extents.
  Fix test case bug which never passes due to wrong script.

Qu Wenruo (5):
  btrfs-progs: lowmem check: Add check for overlapping dev extents
  btrfs-progs: original check: Add ability to detect bad dev extents
  btrfs-progs: lowmem check: Add dev_item check for used bytes and total
    bytes
  btrfs-progs: original check: Add dev_item check for used bytes and
    total bytes
  btrfs-progs: fsck-tests: Add test image for dev extents beyond device
    boundary

 check/main.c                                  | 105 ++++++++++++++++++
 check/mode-lowmem.c                           |  39 ++++++-
 .../over_dev_boundary.img.xz                  | Bin 0 -> 1640 bytes
 tests/fsck-tests/036-bad-dev-extents/test.sh  |  20 ++++
 4 files changed, 162 insertions(+), 2 deletions(-)
 create mode 100644 tests/fsck-tests/036-bad-dev-extents/over_dev_boundary.img.xz
 create mode 100755 tests/fsck-tests/036-bad-dev-extents/test.sh

-- 
2.19.1