fsck.ext4 -n exited with status code 4
e2fsck 1.47.0 (5-Feb-2023)
syzkaller contains a file system with errors, check forced.
Resize inode not valid.  Recreate? no

Pass 1: Checking inodes, blocks, and sizes
Inode 7 has illegal block(s).  Clear? no

Illegal block #2 (4278190080) in inode 7.  IGNORED.
Illegal block #5 (458752) in inode 7.  IGNORED.
Inode 7, i_blocks is 64, should be 128.  Fix? no

Inode 13 has corrupt extent header.  Clear inode? no

Inode 13, i_blocks is 64, should be 0.  Fix? no

Inode 16, i_blocks is 7, should be 64.  Fix? no

Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
Block bitmap differences:  -80 -(112--496)
Fix? no

Free blocks count wrong for group #0 (150994969, counted=0).
Fix? no

Free blocks count wrong (400, counted=0).
Fix? no


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

syzkaller: 17/32 files (0.0% non-contiguous), 112/512 blocks