loop0: detected capacity change from 0 to 4096
------------[ cut here ]------------
!(inode_state_read_once(inode) & I_LINKABLE)
WARNING: fs/inode.c:465 at inc_nlink+0x122/0x150 fs/inode.c:465, CPU#0: syz.0.0/5320
Modules linked in:
CPU: 0 UID: 0 PID: 5320 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:inc_nlink+0x122/0x150 fs/inode.c:465
Code: e5 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 49 64 e5 ff e9 3f ff ff ff e8 3f 3e 76 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: 0000:ffffc90006ff7448 EFLAGS: 00010287
RAX: ffffffff82504451 RBX: ffff88805248d3c8 RCX: 0000000000100000
RDX: ffffc9000f50a000 RSI: 0000000000000fec RDI: 0000000000000fed
RBP: 0000000000000000 R08: ffffffff905794f7 R09: 1ffffffff20af29e
R10: dffffc0000000000 R11: fffffbfff20af29f R12: dffffc0000000000
R13: 1ffff1100a491a79 R14: ffff88805248d380 R15: ffff88805248d450
FS:  00007f948d7486c0(0000) GS:ffff88808c54e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056009cdc1668 CR3: 000000004420f000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 nilfs_mkdir+0x10d/0x390 fs/nilfs2/namei.c:232
 vfs_mkdir+0x406/0x620 fs/namei.c:5276
 ovl_do_mkdir fs/overlayfs/overlayfs.h:257 [inline]
 ovl_workdir_create+0x45f/0x8b0 fs/overlayfs/super.c:345
 ovl_make_workdir fs/overlayfs/super.c:678 [inline]
 ovl_get_workdir fs/overlayfs/super.c:836 [inline]
 ovl_fill_super_creds fs/overlayfs/super.c:1449 [inline]
 ovl_fill_super+0x19ad/0x5d40 fs/overlayfs/super.c:1560
 vfs_get_super fs/super.c:1267 [inline]
 get_tree_nodev+0xbb/0x150 fs/super.c:1286
 vfs_get_tree+0x92/0x2a0 fs/super.c:1694
 fc_mount fs/namespace.c:1198 [inline]
 do_new_mount_fc fs/namespace.c:3765 [inline]
 do_new_mount+0x319/0xdc0 fs/namespace.c:3841
 do_mount fs/namespace.c:4174 [inline]
 __do_sys_mount fs/namespace.c:4390 [inline]
 __se_sys_mount+0x31d/0x420 fs/namespace.c:4367
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f948c79de59
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:00007f948d747fe8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f948ca25fa0 RCX: 00007f948c79de59
RDX: 0000200000000000 RSI: 0000200000000040 RDI: 0000000000000000
RBP: 00007f948c833e6f R08: 0000200000000080 R09: 0000000000000000
R10: 0000000000010000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f948ca26038 R14: 00007f948ca25fa0 R15: 00007ffeaf3564f8
 </TASK>