fsck.ext4 -n exited with status code 12 e2fsck 1.47.2 (1-Jan-2025) ext2fs_check_desc: Corrupt group descriptor: bad block for block bitmap Superblock has an invalid journal (inode 63). Clear? no fsck.ext4: The journal superblock is corrupt while checking journal for syzkaller e2fsck: Cannot proceed with file system check syzkaller: ********** WARNING: Filesystem still has errors **********