fsck.msdos -n exited with status code 1
Warning: Filesystem is FAT32 according to fat_length and fat32_length fields,
  but has only 11 clusters, less than the required minimum of 65525.
  This may lead to problems on some systems.
fsck.fat 4.2 (2021-01-31)
/FILE1
  Start cluster beyond limit (2384527360 > 12). Truncating file.
/FILE1
  File size is 10 bytes, cluster chain length is 0 bytes.
  Truncating file to 0 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 1 unused cluster (16384 bytes).
Free cluster summary wrong (5 vs. really 6)
  Auto-correcting.

Leaving filesystem unchanged.
/tmp/1653725227.img: 6 files, 5/11 clusters