input: syz0 as /devices/virtual/input/input5
------------[ cut here ]------------
inode->i_nlink == 0
WARNING: fs/inode.c:415 at drop_nlink+0xc5/0x110 fs/inode.c:415, CPU#0: syz.0.0/5333
Modules linked in:
CPU: 0 UID: 0 PID: 5333 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:drop_nlink+0xc5/0x110 fs/inode.c:415
Code: 58 07 00 00 be 08 00 00 00 e8 c7 83 e6 ff 3e 48 ff 83 58 07 00 00 5b 41 5c 41 5e 41 5f 5d e9 02 ac 60 09 cc e8 0c b8 79 ff 90 <0f> 0b 90 eb 81 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 5b ff ff ff
RSP: 0018:ffffc9000e0cfa10 EFLAGS: 00010283
RAX: ffffffff824bfba4 RBX: ffff888055879398 RCX: 0000000000100000
RDX: ffffc90020001000 RSI: 00000000000008c0 RDI: 00000000000008c1
RBP: 0000000000000000 R08: ffffffff9030baf7 R09: 1ffffffff206175e
R10: dffffc0000000000 R11: fffffbfff206175f R12: 1ffff1100ab0f27c
R13: 0000000000000000 R14: ffff8880558793e0 R15: dffffc0000000000
FS:  00007f5b1d2566c0(0000) GS:ffff88808c888000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc55961000 CR3: 00000000126e7000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 nilfs_rename+0x4ce/0x8a0 fs/nilfs2/namei.c:418
 vfs_rename+0xa96/0xeb0 fs/namei.c:6054
 filename_renameat2+0x539/0x9c0 fs/namei.c:6172
 __do_sys_rename fs/namei.c:6216 [inline]
 __se_sys_rename+0x55/0x2c0 fs/namei.c:6212
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5b1c39cdd9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5b1d255fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007f5b1c616090 RCX: 00007f5b1c39cdd9
RDX: 0000000000000000 RSI: 0000200000003480 RDI: 0000200000003440
RBP: 00007f5b1c432d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5b1c616128 R14: 00007f5b1c616090 R15: 00007fff6de2e2f8
 </TASK>