fsck.vfat -n exited with status code 1
fsck.fat 4.2 (2021-01-31)
FATs differ but appear to be intact.
  Using first FAT.
/file2
  Contains a free cluster (128). Assuming EOF.
/file2
  File size is 9000 bytes, cluster chain length is 3584 bytes.
  Truncating file to 3584 bytes.
Volume label 'SYZKALLER' stored in root directory and label '' stored in boot sector and different.
  Auto-copying volume label from root directory to boot sector.
Reclaimed 10 unused clusters (5120 bytes).
Dirty bit is set. Fs was not properly unmounted and some data may be corrupt.
 Automatically removing dirty bit.

Leaving filesystem unchanged.
/tmp/2064393097.img: 6 files, 13/8120 clusters