hfs: new node 2 already hashed?
------------[ cut here ]------------
WARNING: CPU: 1 PID: 6639 at fs/hfs/bnode.c:520 hfs_bnode_create+0x461/0x4f0
Modules linked in:
CPU: 1 UID: 0 PID: 6639 Comm: syz.3.122 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+0x461/0x4f0
Code: a1 8b 89 ee e8 60 d2 8d fe e9 cf fc ff ff e8 96 e1 25 ff 4c 89 ef e8 5e f0 e2 08 48 c7 c7 a0 ce a1 8b 89 ee e8 40 d2 8d fe 90 <0f> 0b 90 eb b0 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c d6 fb ff ff
RSP: 0018:ffffc9000398f340 EFLAGS: 00010246
RAX: 000000000000001f RBX: ffff888111514000 RCX: 9e275d89a6d88d00
RDX: ffffc90020a13000 RSI: 0000000000000bb3 RDI: 0000000000000bb4
RBP: 0000000000000002 R08: ffffc9000398f067 R09: 1ffff92000731e0c
R10: dffffc0000000000 R11: fffff52000731e0d R12: 0000000000000002
R13: ffff8881115140e0 R14: ffff888020de6400 R15: dffffc0000000000
FS:  00007f77d40216c0(0000) GS:ffff8881a3c15000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f77d4020fc8 CR3: 000000010a048000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 hfs_bmap_alloc+0x5bb/0x640
 hfs_bnode_split+0xcc/0xef0
 hfs_brec_insert+0x377/0xbd0
 hfs_cat_create+0x344/0x640
 hfs_create+0x66/0xe0
 path_openat+0x14f4/0x3830
 do_filp_open+0x1fa/0x410
 do_sys_openat2+0x121/0x1c0
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f77d318eba9
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:00007f77d4021038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f77d33d6180 RCX: 00007f77d318eba9
RDX: 00000000000026e1 RSI: 00002000000000c0 RDI: ffffffffffffff9c
RBP: 00007f77d3211e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f77d33d6218 R14: 00007f77d33d6180 R15: 00007ffe6fa10738
 </TASK>
