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 <wqu@xxxxxxxx> 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 <jungyeon@xxxxxxxxxx> 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
