linux-kernel - [GIT PULL] Btrfs fixes for 6.9-rc2

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Date: Wed, 27 Mar 2024 21:32:19 +0100
From: David Sterba <dsterba@...e.com>
To: torvalds@...ux-foundation.org
Cc: David Sterba <dsterba@...e.com>,
	linux-btrfs@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [GIT PULL] Btrfs fixes for 6.9-rc2

Hi,

here's another batch of stability fixes.

The first fix is for the bug you also hit after 6.8-rc2 pull request [1].
We got another report, fortunately it was reproducible and in the end we also
got the fix.

[1] https://lore.kernel.org/linux-btrfs/CAHk-=whNdMaN9ntZ47XRKP6DBes2E5w7fi-0U3H2+PS18p+Pzw@mail.gmail.com/

The rest is usual mix of fixes, zoned mode, device status handling and
error handling.

Please pull, thanks.

- fix race when reading extent buffer and 'uptodate' status is missed by one
  thread (introduced in 6.5)

- do additional validation of devices using major:minor numbers

- zoned mode fixes:
  - use zone-aware super block access during scrub
  - fix use-after-free during device replace (found by KASAN)
  - also delete zones that are 100% unusable to reclaim space

- extent unpinning fixes
  - fix extent map leak after error handling
  - print correct range in error message

- error code and message updates

----------------------------------------------------------------
The following changes since commit 1cab1375ba6d5337a25acb346996106c12bb2dd0:

  btrfs: reuse cloned extent buffer during fiemap to avoid re-allocations (2024-03-05 18:14:19 +0100)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux.git tags/for-6.9-rc1-tag

for you to fetch changes up to ef1e68236b9153c27cb7cf29ead0c532870d4215:

  btrfs: fix race in read_extent_buffer_pages() (2024-03-26 16:42:39 +0100)

----------------------------------------------------------------
Anand Jain (2):
      btrfs: validate device maj:min during open
      btrfs: return accurate error code on open failure in open_fs_devices()

Filipe Manana (4):
      btrfs: fix extent map leak in unexpected scenario at unpin_extent_cache()
      btrfs: fix warning messages not printing interval at unpin_extent_range()
      btrfs: fix message not properly printing interval when adding extent map
      btrfs: use btrfs_warn() to log message at btrfs_add_extent_mapping()

Johannes Thumshirn (3):
      btrfs: zoned: use zone aware sb location for scrub
      btrfs: zoned: fix use-after-free in do_zone_finish()
      btrfs: zoned: don't skip block groups with 100% zone unusable

Tavian Barnes (1):
      btrfs: fix race in read_extent_buffer_pages()

 fs/btrfs/block-group.c |  3 ++-
 fs/btrfs/extent_io.c   | 13 +++++++++++++
 fs/btrfs/extent_map.c  | 16 ++++++++--------
 fs/btrfs/scrub.c       | 12 +++++++++++-
 fs/btrfs/volumes.c     | 27 ++++++++++++++++++++++-----
 fs/btrfs/zoned.c       | 14 +++++++-------
 6 files changed, 63 insertions(+), 22 deletions(-)