------------[ cut here ]------------
WARNING: CPU: 1 PID: 8583 at fs/inode.c:474 inc_nlink+0x122/0x150 fs/inode.c:474
Modules linked in:
CPU: 1 UID: 0 PID: 8583 Comm: syz.5.498 Not tainted 6.16.0-rc1-next-20250612-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:inc_nlink+0x122/0x150 fs/inode.c:474
Code: e8 ff e9 3a ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 4c ff ff ff 48 89 df e8 a9 29 e8 ff e9 3f ff ff ff e8 bf 98 84 ff 90 <0f> 0b 90 eb 80 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 50 ff ff ff
RSP: 0018:ffffc9001112fc88 EFLAGS: 00010287
RAX: ffffffff823bcaf1 RBX: ffff88805894a180 RCX: 0000000000080000
RDX: ffffc9000d510000 RSI: 000000000000054f RDI: 0000000000000550
RBP: 0000000000000000 R08: ffffffff8fa14bf7 R09: 1ffffffff1f4297e
R10: dffffc0000000000 R11: fffffbfff1f4297f R12: dffffc0000000000
R13: 1ffff1100b129430 R14: ffff88805894a138 R15: ffff88805894a208
FS:  00007f21c575f6c0(0000) GS:ffff888125d44000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f65d760a000 CR3: 0000000030dc8000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 nilfs_mkdir+0xf6/0x330 fs/nilfs2/namei.c:232
 vfs_mkdir+0x306/0x510 fs/namei.c:4366
 do_mkdirat+0x247/0x590 fs/namei.c:4399
 __do_sys_mkdir fs/namei.c:4421 [inline]
 __se_sys_mkdir fs/namei.c:4419 [inline]
 __x64_sys_mkdir+0x6c/0x80 fs/namei.c:4419
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f21c498e929
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:00007f21c575f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007f21c4bb5fa0 RCX: 00007f21c498e929
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000200000002c40
RBP: 00007f21c4a10b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f21c4bb5fa0 R15: 00007ffcfda24b88
 </TASK>