fsck.f2fs exited with status code 255
Info: MKFS version
  "Linux version 5.18.16-1rodete4-amd64 (glinux-team@google.com) (gcc-11 (Debian 11.3.0-5) 11.3.0, GNU ld (GNU Binutils for Debian) 2.39) #1 SMP PREEMPT_DYNAMIC Debian 5.18.16-1rodete4 (2022-ŒV-21)"
Info: FSCK version
  from "Linux version 5.18.16-1rodete4-amd64 (glinux-team@google.com) (gcc-11 (Debian 11.3.0-5) 11.3.0, GNU ld (GNU Binutils for Debian) 2.39) #1 SMP PREEMPT_DYNAMIC Debian 5.18.16-1rodete4 (2022-10-21)"
    to "Linux version 5.9.0-0.bpo.5-cloud-amd64 (debian-kernel@lists.debian.org) (gcc-8 (Debian 8.3.0-6) 8.3.0, GNU ld (GNU Binutils for Debian) 2.31.1) #1 SMP Debian 5.9.15-1~bpo10+1 (2020-12-31)"
Info: superblock features = 1f9 :  encrypt extra_attr project_quota inode_checksum flexible_inline_xattr quota_ino inode_crtime
Info: superblock encrypt level = 0, salt = 00000000000000000000000000000000
Info: Segments per section = 1
Info: Sections per zone = 1
Info: total FS sectors = 131072 (64 MB)
	Invalid CP CRC: offset:4092, crc:0x4c38c8ca, calc:0x90c2816c
Info: CKPT version = 48b305e5
Info: Checked valid nat_bits in checkpoint
Info: checkpoint state = 1c5 :  trimmed nat_bits crc compacted_summary unmount
[ASSERT] (__chk_dentries:1631)  --> Bad dentry 0x3 with unexpected ftype 0x0
[ASSERT] (__chk_dentries:1631)  --> Bad dentry 0x300 with unexpected ftype 0x0
[ASSERT] (__chk_dentries:1631)  --> Bad dentry 0x5ed with unexpected ftype 0x0
[ASSERT] (__chk_dentries:1631)  --> Bad dentry 0x645 with unexpected ftype 0x0
[ASSERT] (__chk_dentries:1631)  --> Bad dentry 0x0 with unexpected ftype 0x0
[ASSERT] (fsck_chk_inode_blk:1114)  --> ino: 0x4 dots: 0
[ASSERT] (fsck_chk_inode_blk:1114)  --> ino: 0x3 dots: 1

NID[0x5] is unreachable, blkaddr:0x3c00
NID[0x6] is unreachable, blkaddr:0x3c01
[FSCK] Max image size: 62 MB, Free space: 15 MB
[FSCK] Unreachable nat entries                        [Fail] [0x2]
[FSCK] SIT valid block bitmap checking                [Fail]
[FSCK] Hard link checking for regular file            [Ok..] [0x1]
[FSCK] valid_block_count matching with CP             [Fail] [0x9]
[FSCK] valid_node_count matching with CP (de lookup)  [Fail] [0x5]
[FSCK] valid_node_count matching with CP (nat lookup) [Ok..] [0x7]
[FSCK] valid_inode_count matched with CP              [Fail] [0x5]
[FSCK] free segment_count matched with CP             [Ok..] [0x12]
[FSCK] next block offset is free                      [Ok..]
[FSCK] fixing SIT types
[FSCK] other corrupted bugs                           [Fail]

Do you want to restore lost files into ./lost_found/? [Y/N] [ASSERT] (fsck_verify:3330) res >= 0