This patchset can be fetched from:
https://github.com/adam900710/linux/tree/tree_checker_enhancement
The base branch write_time_tree_checker, the base commit is:
commit cb3ba69132a83d5e87f243dece5db09a022b0be7
(github/write_time_tree_checker, write_time_tree_checker)
Author: Qu Wenruo <w...@suse.com>
Date: Thu Jan 17 15:15:14 2019 +0800
btrfs: Do mandatory tree block check before submitting bio
Yoon Jungyeon reported several fuzzed image screwing up btrfs.
3 of the reported images are mount panic and can be addressed by tree
checker enhancement and fix.
This patchset addresses those 3 mount panic by:
- Verify chunk items
This merges the existing btrfs_check_chunk_valid() and apply it to all
chunk items, both in super block syschunk array and all tree blocks.
- Verify dev item
This could avoid NULL pointer workaround for seed dummy.
- Don't trigger comprehensive root owner check if tree root is not
initialized yet
The remaining runtime problem needs extra inspection, and some isn't so
easy to fix by tree-checker alone.
Reported-by: Yoon Jungyeon <jungy...@gatech.edu>
Qu Wenruo (3):
btrfs: tree-checker: Verify chunk items
btrfs: tree-checker: Verify dev item
btrfs: tree-checker: Fix NULL pointer access for corrupted chunk root
fs/btrfs/tree-checker.c | 242 +++++++++++++++++++++++++++++++++++++++-
fs/btrfs/tree-checker.h | 3 +
fs/btrfs/volumes.c | 103 +----------------
fs/btrfs/volumes.h | 9 ++
4 files changed, 254 insertions(+), 103 deletions(-)
--
2.21.0
