overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off.
------------[ cut here ]------------
WARNING: fs/nsfs.c:495 at nsfs_fh_to_dentry+0xc56/0xd60, CPU#1: syz.9.4420/24935
Modules linked in:
CPU: 1 UID: 0 PID: 24935 Comm: syz.9.4420 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:nsfs_fh_to_dentry+0xc56/0xd60
Code: 5c 24 60 e9 28 f8 ff ff e8 47 fa 79 ff 90 0f 0b 90 e9 1d f6 ff ff e8 39 fa 79 ff 90 0f 0b 90 e9 96 f6 ff ff e8 2b fa 79 ff 90 <0f> 0b 90 e9 ea f6 ff ff e8 1d fa 79 ff 31 db 4c 8d 74 24 70 e9 ed
RSP: 0018:ffffc9000955fa20 EFLAGS: 00010283
RAX: ffffffff8245e3c5 RBX: 00000000effffff8 RCX: 0000000000080000
RDX: ffffc90021004000 RSI: 0000000000000037 RDI: 0000000000000038
RBP: ffffc9000955fb10 R08: ffffffff8fc45d37 R09: 1ffffffff1f88ba6
R10: dffffc0000000000 R11: fffffbfff1f88ba7 R12: 1ffff920012abf4c
R13: ffff88810a980994 R14: ffffc9000955fa90 R15: 0000000000000001
FS:  00007fec664716c0(0000) GS:ffff8881a39dd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000563f52095950 CR3: 000000003a8f8000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 exportfs_decode_fh_raw+0x178/0x6e0
 do_handle_to_path+0xa4/0x1a0
 do_handle_open+0x6b4/0x8f0
 do_syscall_64+0xfa/0xfa0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fec6558eba9
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:00007fec66471038 EFLAGS: 00000246 ORIG_RAX: 0000000000000130
RAX: ffffffffffffffda RBX: 00007fec657d5fa0 RCX: 00007fec6558eba9
RDX: 0000000000040400 RSI: 0000200000000080 RDI: 0000000000000003
RBP: 00007fec65611e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fec657d6038 R14: 00007fec657d5fa0 R15: 00007fff8b84b828
 </TASK>
