F2FS-fs (loop3): Found nat_bits in checkpoint
F2FS-fs (loop3): Try to recover 1th superblock, ret: 0
F2FS-fs (loop3): Mounted with checkpoint version = 48b305e4
------------[ cut here ]------------
WARNING: CPU: 0 PID: 26618 at fs/inode.c:417 drop_nlink+0xc4/0x110 fs/inode.c:417
Modules linked in:
CPU: 0 UID: 0 PID: 26618 Comm: syz.3.6881 Not tainted 6.14.0-syzkaller-01103-g2df0c02dab82 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:drop_nlink+0xc4/0x110 fs/inode.c:417
Code: bb 70 07 00 00 be 08 00 00 00 e8 c7 79 e6 ff f0 48 ff 83 70 07 00 00 5b 41 5c 41 5e 41 5f 5d e9 4d 36 cb fe e8 0d 58 7e ff 90 <0f> 0b 90 eb 83 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 5c ff ff ff
RSP: 0018:ffffc90018c47bb8 EFLAGS: 00010287
RAX: ffffffff82450ac3 RBX: 1ffff1100aa8223b RCX: 0000000000080000
RDX: ffffc9000ea35000 RSI: 000000000000142f RDI: 0000000000001430
RBP: 0000000000000000 R08: ffffffff82450a43 R09: 1ffffffff2079fae
R10: dffffc0000000000 R11: fffffbfff2079faf R12: ffff8880554111d8
R13: dffffc0000000000 R14: ffff888055411190 R15: dffffc0000000000
FS:  00007fc9c98c36c0(0000) GS:ffff888125224000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c349bf6 CR3: 00000000574fe000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 f2fs_i_links_write fs/f2fs/f2fs.h:3122 [inline]
 f2fs_drop_nlink+0xd6/0x380 fs/f2fs/dir.c:845
 f2fs_unlink+0x48a/0x960 fs/f2fs/namei.c:573
 vfs_unlink+0x367/0x650 fs/namei.c:4544
 do_unlinkat+0x442/0x7b0 fs/namei.c:4608
 __do_sys_unlink fs/namei.c:4654 [inline]
 __se_sys_unlink fs/namei.c:4652 [inline]
 __x64_sys_unlink+0x47/0x50 fs/namei.c:4652
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc9c898d169
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc9c98c3038 EFLAGS: 00000246 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 00007fc9c8ba5fa0 RCX: 00007fc9c898d169
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000280
RBP: 00007fc9c8a0e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fc9c8ba5fa0 R15: 00007ffe75f3dfc8
 </TASK>