linux-ext4 - [PATCHv2 0/9] ext4: fast_commit fixes, stricter block checking & cleanups

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 16 Feb 2022 12:32:42 +0530
From:   Ritesh Harjani <riteshh@...ux.ibm.com>
To:     linux-ext4@...r.kernel.org
Cc:     Jan Kara <jack@...e.cz>, "Theodore Ts'o" <tytso@....edu>,
        Andreas Dilger <adilger.kernel@...ger.ca>,
        Harshad Shirwadkar <harshadshirwadkar@...il.com>,
        linux-fsdevel@...r.kernel.org,
        Ritesh Harjani <riteshh@...ux.ibm.com>
Subject: [PATCHv2 0/9] ext4: fast_commit fixes, stricter block checking & cleanups

Hello,

Please find the v2 of this patch series which addresses the review comments from
Jan on PATCH-2 & PATCH-7. No changes other than that.

Summary
========
This patch series aimes at fixing some of the issues identified in fast_commit
with flex_bg. This also adds some stricter checking of blocks to be freed in
ext4_mb_clear_bb(), ext4_group_add_blocks() & ext4_mb_mark_bb()

Testing
=========
I have run xfstests with -g log,metadata,auto group with 4k & 4k_fc
configs. I have not found any regression due to these patches alone.

But I have found few issues like generic/047 occasionally failing even w/o this
patch series. I do have some fixes for those too in my tree. I will send those
fixes later after figuring out few more things around couple other failures.

References
===========
[v1]: https://lore.kernel.org/all/cover.1644062450.git.riteshh@linux.ibm.com/
[RFC]: https://lore.kernel.org/all/a9770b46522c03989bdd96f63f7d0bfb2cf499ab.1643642105.git.riteshh@linux.ibm.com/

Ritesh Harjani (9):
  ext4: Correct cluster len and clusters changed accounting in ext4_mb_mark_bb
  ext4: Fixes ext4_mb_mark_bb() with flex_bg with fast_commit
  ext4: Refactor ext4_free_blocks() to pull out ext4_mb_clear_bb()
  ext4: Use in_range() for range checking in ext4_fc_replay_check_excluded
  ext4: Rename ext4_set_bits to mb_set_bits
  ext4: No need to test for block bitmap bits in ext4_mb_mark_bb()
  ext4: Add ext4_sb_block_valid() refactored out of ext4_inode_block_valid()
  ext4: Add strict range checks while freeing blocks
  ext4: Add extra check in ext4_mb_mark_bb() to prevent against possible corruption

 fs/ext4/block_validity.c |  26 +--
 fs/ext4/ext4.h           |   5 +-
 fs/ext4/fast_commit.c    |   4 +-
 fs/ext4/mballoc.c        | 342 ++++++++++++++++++++++-----------------
 fs/ext4/resize.c         |   4 +-
 5 files changed, 220 insertions(+), 161 deletions(-)

--
2.31.1