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| author | Qu Wenruo <[email protected]> | 2024-01-17 00:32:26 +0000 |
|---|---|---|
| committer | David Sterba <[email protected]> | 2024-01-18 22:43:08 +0000 |
| commit | 7f2d219e78e95a137a9c76fddac7ff8228260439 (patch) | |
| tree | f6d2ba99e3f8148706efd6f580a9ed9378cf0bb7 /fs/btrfs/dev-replace.c | |
| parent | btrfs: scrub: avoid use-after-free when chunk length is not 64K aligned (diff) | |
| download | kernel-7f2d219e78e95a137a9c76fddac7ff8228260439.tar.gz kernel-7f2d219e78e95a137a9c76fddac7ff8228260439.zip | |
btrfs: scrub: limit RST scrub to chunk boundary
[BUG]
If there is an extent beyond chunk boundary, currently RST scrub would
error out.
[CAUSE]
In scrub_submit_extent_sector_read(), we completely rely on
extent_sector_bitmap, which is populated using extent tree.
The extent tree can be corrupted that there is an extent item beyond a
chunk.
In that case, RST scrub would fail and error out.
[FIX]
Despite the extent_sector_bitmap usage, also limit the read to chunk
boundary.
Reviewed-by: Johannes Thumshirn <[email protected]>
Signed-off-by: Qu Wenruo <[email protected]>
Signed-off-by: David Sterba <[email protected]>
Diffstat (limited to 'fs/btrfs/dev-replace.c')
0 files changed, 0 insertions, 0 deletions