Pass 1: Checking inodes, blocks, and sizes
Directory inode 12 has extent marked uninitialized at block 0.  Fix? yes

Directory inode 14 has extent marked uninitialized at block 0.  Fix? yes

Pass 2: Checking directory structure
Directory inode 14, block #0, offset 0: directory corrupted
Salvage? yes

Missing '.' in directory inode 14.
Fix? yes

Missing '..' in directory inode 14.
Fix? yes

Pass 3: Checking directory connectivity
'..' in /abc (14) is <The NULL inode> (0), should be / (2).
Fix? yes

Pass 4: Checking reference counts
Pass 5: Checking group summary information

test_filesys: ***** FILE SYSTEM WAS MODIFIED *****
test_filesys: 14/128 files (0.0% non-contiguous), 20/512 blocks
Exit status is 1