overlayfs: upperdir is in-use as upperdir/workdir of another mount, mount with '-o index=off' to override exclusive upperdir protection.
------------[ cut here ]------------
WARNING: fs/ntfs3/frecord.c:3030 at ni_rename+0xee/0x100, CPU#1: syz.3.856/12503
Modules linked in:
CPU: 1 UID: 0 PID: 12503 Comm: syz.3.856 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:ni_rename+0xee/0x100
Code: 8b 05 46 96 65 0f 48 3b 44 24 10 75 22 44 89 e0 48 83 c4 18 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 e3 c2 b2 fe 90 <0f> 0b 90 eb c5 e8 d8 46 46 08 0f 1f 84 00 00 00 00 00 90 90 90 90
RSP: 0018:ffffc900096efa78 EFLAGS: 00010293
RAX: ffffffff830db9fd RBX: 00000000fffffffe RCX: ffff888171d49d00
RDX: 0000000000000000 RSI: 00000000fffffffe RDI: 0000000000000000
RBP: 00000000fffffffe R08: ffffffff8f7d5977 R09: 1ffffffff1efab2e
R10: dffffc0000000000 R11: fffffbfff1efab2f R12: 0000000000000000
R13: ffff888117fdd500 R14: ffff88801dd1d760 R15: ffff88801dd1f480
FS:  00007faf463cd6c0(0000) GS:ffff8882a9eeb000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007faf463abfc8 CR3: 00000001a34d0000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 ntfs_rename+0x735/0xbf0
 vfs_rename+0xb34/0xe80
 do_renameat2+0x6a2/0xa50
 __x64_sys_renameat2+0xce/0xe0
 do_syscall_64+0xfa/0xfa0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7faf4818efc9
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:00007faf463cd038 EFLAGS: 00000246 ORIG_RAX: 000000000000013c
RAX: ffffffffffffffda RBX: 00007faf483e6090 RCX: 00007faf4818efc9
RDX: ffffffffffffff9c RSI: 0000200000000580 RDI: ffffffffffffff9c
RBP: 00007faf48211f91 R08: 0000000000000000 R09: 0000000000000000
R10: 00002000000005c0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007faf483e6128 R14: 00007faf483e6090 R15: 00007ffefb7d5ed8
 </TASK>
