hfs: new node 4 already hashed?
------------[ cut here ]------------
1
WARNING: fs/hfs/bnode.c:520 at hfs_bnode_create+0x45a/0x4e0, CPU#0: syz.7.433/10466
Modules linked in:
CPU: 0 UID: 0 PID: 10466 Comm: syz.7.433 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:hfs_bnode_create+0x45a/0x4e0
Code: e8 8b 89 ee e8 f7 d1 73 fe e9 d6 fc ff ff e8 8d 53 12 ff 4c 89 ef e8 75 5f 01 09 48 c7 c7 60 9c e8 8b 89 ee e8 d7 d1 73 fe 90 <0f> 0b 90 eb b0 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c dd fb ff ff
RSP: 0018:ffffc90006a8f748 EFLAGS: 00010246
RAX: 000000000000001f RBX: ffff8881b9b7a000 RCX: 4b9390ed34985a00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 0000000000000004 R08: ffffc90006a8f4c7 R09: 1ffff92000d51e98
R10: dffffc0000000000 R11: fffff52000d51e99 R12: 0000000000000004
R13: ffff8881b9b7a0d8 R14: ffff88811f961600 R15: dffffc0000000000
FS:  00007f9b9c8846c0(0000) GS:ffff88818dc2d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fab7e57b108 CR3: 000000001dd84000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 hfs_bmap_alloc+0x5bd/0x650
 hfs_bnode_split+0xd4/0x1070
 hfs_brec_insert+0x3a4/0xc80
 hfs_cat_create+0x50c/0x810
 hfs_mkdir+0x79/0xe0
 vfs_mkdir+0x406/0x620
 filename_mkdirat+0x285/0x510
 __se_sys_mkdirat+0x35/0x150
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9b9b99ce59
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:00007f9b9c884028 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f9b9bc15fa0 RCX: 00007f9b9b99ce59
RDX: 0000000000000000 RSI: 00002000000000c0 RDI: ffffffffffffff9c
RBP: 00007f9b9ba32e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9b9bc16038 R14: 00007f9b9bc15fa0 R15: 00007ffe53c3da08
 </TASK>
