loop0: detected capacity change from 0 to 4096
------------[ cut here ]------------
inode->i_nlink == 0
WARNING: fs/inode.c:417 at drop_nlink+0xc5/0x110 fs/inode.c:417, CPU#0: syz.0.0/5323
Modules linked in:
CPU: 0 UID: 0 PID: 5323 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:417
Code: 70 07 00 00 be 08 00 00 00 e8 b7 57 e6 ff 3e 48 ff 83 70 07 00 00 5b 41 5c 41 5e 41 5f 5d c3 cc cc cc cc cc e8 7c 77 7c 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:ffffc90001a8f9f0 EFLAGS: 00010283
RAX: ffffffff82480f74 RBX: ffff8880485cba28 RCX: 0000000000100000
RDX: ffffc9000f53a000 RSI: 0000000000000a12 RDI: 0000000000000a13
RBP: 0000000000000000 R08: ffffffff8fef3f77 R09: 1ffffffff1fde7ee
R10: dffffc0000000000 R11: fffffbfff1fde7ef R12: 1ffff110090b974e
R13: 0000000000000000 R14: ffff8880485cba70 R15: dffffc0000000000
FS:  00007f7cf45936c0(0000) GS:ffff88808ccea000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000004580 CR3: 0000000038c79000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 nilfs_rename+0x4ce/0x8a0 fs/nilfs2/namei.c:418
 vfs_rename+0xdb5/0x1160 fs/namei.c:5938
 do_renameat2+0x548/0x900 fs/namei.c:6056
 __do_sys_renameat2 fs/namei.c:6086 [inline]
 __se_sys_renameat2 fs/namei.c:6083 [inline]
 __x64_sys_renameat2+0xce/0xe0 fs/namei.c:6083
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7cf379aeb9
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:00007f7cf4593028 EFLAGS: 00000246 ORIG_RAX: 000000000000013c
RAX: ffffffffffffffda RBX: 00007f7cf3a15fa0 RCX: 00007f7cf379aeb9
RDX: 0000000000000009 RSI: 00002000000000c0 RDI: 000000000000000a
RBP: 00007f7cf3808c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000200000000100 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7cf3a16038 R14: 00007f7cf3a15fa0 R15: 00007ffc0a3dfa08
 </TASK>