fsck.ext4 -n exited with status code 4
e2fsck 1.47.0 (5-Feb-2023)
syzkaller contains a file system with errors, check forced.
Pass 1: Checking inodes, blocks, and sizes
Inode 2 has extent header but inline data flag is set.
Fix? no

Inode 2 has inline data and extent flags set but i_block contains junk.
Clear inode? no

Inode 2, i_size is 4096, should be 60.  Fix? no

Inode 2, i_blocks is 8, should be 0.  Fix? no

Inode 12 is a character device but it looks like it is really a directory.
Fix? no

Inode 12, i_blocks is 8, should be 0.  Fix? no

Inode 16 is in use, but has dtime set.  Fix? no

Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
'..' in ??? (2) is <The NULL inode> (0), should be ??? (2).
Fix? no

Unconnected directory inode 11 (was in ???)
Connect to /lost+found? no

'..' in ... (11) is ??? (2), should be <The NULL inode> (0).
Fix? no

Pass 4: Checking reference counts
Inode 2 ref count is 4, should be 1.  Fix? no

Inode 11 ref count is 2, should be 1.  Fix? no

Inode 12 (...) is an illegal character device.
Clear? no

Unattached inode 12
Connect to /lost+found? no

Unattached inode 13
Connect to /lost+found? no

Unattached inode 14
Connect to /lost+found? no

Unattached inode 15
Connect to /lost+found? no

Unattached inode 16
Connect to /lost+found? no

Unattached inode 17
Connect to /lost+found? no

Pass 5: Checking group summary information
Block bitmap differences:  -13 -35
Fix? no

Free blocks count wrong for group #0 (39667, counted=41).
Fix? no

Free inodes count wrong for group #0 (0, counted=15).
Fix? no

Directories count wrong for group #0 (0, counted=2).
Fix? no

[QUOTA WARNING] Usage inconsistent for ID 0:actual (45056, 8) != expected (0, 0)
[ERROR] ../../../../lib/support/quotaio_tree.c:546:check_reference: Illegal reference (3506438144 >= 6) in user quota file
Update quota info for quota type 0? no

[QUOTA WARNING] Usage inconsistent for ID 0:actual (45056, 8) != expected (53248, 8)
Update quota info for quota type 1? no


syzkaller: ********** WARNING: Filesystem still has errors **********

syzkaller: 17/32 files (0.0% non-contiguous), 23/64 blocks