[GIT PULL] xfs: fixes for 4.13-rc3

[Darrick J. Wong]

Hi Linus,

Here's the first batch of bug fixes for 4.13.

--Darrick

The following changes since commit 5771a8c08880cdca3bfb4a3fc6d309d6bba20877:

  Linux v4.13-rc1 (2017-07-15 15:22:10 -0700)

are available in the git repository at:

  git://git.kernel.org/pub/scm/fs/xfs/xfs-linux.git tags/xfs-4.13-fixes-2

for you to fetch changes up to 5b094d6dac0451ad89b1dc088395c7b399b7e9e8:

  xfs: fix multi-AG deadlock in xfs_bunmapi (2017-07-26 08:20:03 -0700)

----------------------------------------------------------------
Changes since last update:
- Fix firstfsb variables that we left uninitialized, which could lead to
  locking problems.
- Check for NULL metadata buffer pointers before using them.
- Don't allow btree cursor manipulation if the btree block is corrupt.
  Better to just shut down.
- Fix infinite loop problems in quotacheck.
- Fix buffer overrun when validating directory blocks.
- Fix deadlock problem in bunmapi.

----------------------------------------------------------------
Brian Foster (1):
      xfs: fix quotacheck dquot id overflow infinite loop

Christoph Hellwig (1):
      xfs: fix multi-AG deadlock in xfs_bunmapi

Darrick J. Wong (4):
      xfs: check _btree_check_block value
      xfs: set firstfsb to NULLFSBLOCK before feeding it to _bmapi_write
      xfs: check _alloc_read_agf buffer pointer before using
      xfs: check that dir block entries don't off the end of the buffer

 fs/xfs/libxfs/xfs_bmap.c      | 21 +++++++++++++++++++++
 fs/xfs/libxfs/xfs_btree.c     |  6 ++++--
 fs/xfs/libxfs/xfs_dir2_data.c |  4 ++++
 fs/xfs/libxfs/xfs_refcount.c  |  4 ++++
 fs/xfs/xfs_qm.c               |  3 +++
 fs/xfs/xfs_reflink.c          |  4 +++-
 6 files changed, 39 insertions(+), 3 deletions(-)