JHFS+ overlapped extent allocation

Verify and Repair volume “speedy”
Checking storage systemChecking volume.
disk0s2: Scan for Volume Headers
disk0s2: Scan for Disk Labels
Logical Volume Group A4E67EA0-16BF-4B59-9D40-3AAC895437B4 spans 1 device
Logical Volume Group has a 16 MB Metadata Volume with double redundancy
Start scanning metadata for a valid checkpoint
Load and verify Segment Headers
Load and verify Checkpoint Payload
Load and verify Transaction Segment
Load and verify Transaction Segment
Incorporate 1 newer non-checkpoint transactions
Load and verify Virtual Address Table
Load and verify Segment Usage Table
Load and verify Metadata Superblock
Load and verify Logical Volumes B-Trees
Logical Volume Group contains 1 Logical Volumes
Load and verify 1323B3D0-A509-4557-B19A-0D7530FC8E73
Load and verify 03BA45AA-F05A-423C-9A66-70AEE6032195
Load and verify Freespace Summary
Load and verify Block Accounting
Load and verify Segment Cleaning
Newest transaction commit checkpoint is valid
The volume A4E67EA0-16BF-4B59-9D40-3AAC895437B4 appears to be OK.
Checking file systemChecking Journaled HFS Plus volume.
Checking extents overflow file.
Checking catalog file.
Incorrect block count for file iNode12140449
(It should be 33960 instead of 26580)
Checking multi-linked files.
Checking catalog hierarchy.
Checking extended attributes file.
Overlapped extent allocation (id = 12140449, /HFS+ Private Data/iNode12140449)
Checking multi-linked directories.
Checking volume bitmap.
Checking volume information.
Invalid volume free block count
(It should be 8398431 instead of 8405811)
Repairing volume.
Look for links to corrupt files in DamagedFiles directory.
Rechecking volume.
Checking Journaled HFS Plus volume.
Checking extents overflow file.
Checking catalog file.
Checking multi-linked files.
Checking catalog hierarchy.
Checking extended attributes file.
Checking multi-linked directories.
Checking volume bitmap.
Volume bitmap needs minor repair for under-allocation
Checking volume information.
Invalid volume free block count
(It should be 8398430 instead of 8405810)
Repairing volume.
Rechecking volume.
Checking Journaled HFS Plus volume.
Checking extents overflow file.
Checking catalog file.
Checking multi-linked files.
Checking catalog hierarchy.
Checking extended attributes file.
Checking multi-linked directories.
Checking volume bitmap.
Checking volume information.
The volume speedy was repaired successfully.
Volume repair complete.Updating boot support partitions for the volume as required.