loop7: rw=2049, sector=268435468, nr_sectors = 2 limit=64
overlay: ./file1 is not a directory
------------[ cut here ]------------
!(inode_state_read_once(inode) & I_LINKABLE)
WARNING: fs/inode.c:475 at inc_nlink+0x122/0x150, CPU#0: syz.7.438/10380
Modules linked in:
CPU: 0 UID: 0 PID: 10380 Comm: syz.7.438 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:inc_nlink+0x122/0x150
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 19 cf e5 ff e9 3f ff ff ff e8 4f 92 7b 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: 0018:ffffc90007d2fd10 EFLAGS: 00010287
RAX: ffffffff824a0e91 RBX: ffff888114410af8 RCX: 0000000000080000
RDX: ffffc900075ca000 RSI: 00000000000009c2 RDI: 00000000000009c3
RBP: 0000000000000000 R08: ffffffff90119ab7 R09: 1ffffffff2023356
R10: dffffc0000000000 R11: fffffbfff2023357 R12: dffffc0000000000
R13: 1ffff1102288215f R14: ffff888114410ab0 R15: ffff888114410b80
FS:  00007f6bea8986c0(0000) GS:ffff88818de60000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001000 CR3: 000000011c124000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 minix_mkdir+0x44/0x120
 vfs_mkdir+0x413/0x630
 filename_mkdirat+0x285/0x510
 __se_sys_mkdirat+0x35/0x150
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6be999c799
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:00007f6bea898028 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f6be9c15fa0 RCX: 00007f6be999c799
RDX: 00000000000001c0 RSI: 0000200000000540 RDI: ffffffffffffff9c
RBP: 00007f6be9a32c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6be9c16038 R14: 00007f6be9c15fa0 R15: 00007ffce1cc9e68
 </TASK>
