hfsplus: new node 3 already hashed?
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WARNING: fs/hfsplus/bnode.c:634 at hfsplus_bnode_create+0x45d/0x4f0 fs/hfsplus/bnode.c:634, CPU#0: syz.0.0/5336
Modules linked in:
CPU: 0 UID: 0 PID: 5336 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:hfsplus_bnode_create+0x45d/0x4f0 fs/hfsplus/bnode.c:634
Code: 08 8c 89 ee e8 24 9d 73 fe e9 cf fc ff ff e8 da 5f 12 ff 4c 89 f7 e8 12 3a 1f 09 48 c7 c7 a0 81 08 8c 89 ee e8 04 9d 73 fe 90 <0f> 0b 90 49 c7 c5 ef ff ff ff eb a9 44 89 f9 80 e1 07 80 c1 03 38
RSP: 0018:ffffc9000fcf75c0 EFLAGS: 00010246
RAX: 0000000000000023 RBX: dffffc0000000000 RCX: 50d8775bcff2f400
RDX: ffffc90020001000 RSI: 0000000000001121 RDI: 0000000000001122
RBP: 0000000000000003 R08: ffffc9000fcf7347 R09: 1ffff92001f9ee68
R10: dffffc0000000000 R11: fffff52001f9ee69 R12: 0000000000000003
R13: ffff8880122c6000 R14: ffff8880122c60d8 R15: ffff888040011f00
FS:  00007f8cd24806c0(0000) GS:ffff88808c54e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fab6ae16000 CR3: 000000001f73d000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 hfs_bnode_split+0xd2/0x1070 fs/hfsplus/brec.c:248
 hfsplus_brec_insert+0x3bb/0xde0 fs/hfsplus/brec.c:100
 hfsplus_create_cat+0xa7e/0x1240 fs/hfsplus/catalog.c:308
 hfsplus_mknod+0x184/0x3c0 fs/hfsplus/dir.c:532
 vfs_mknod+0x441/0x600 fs/namei.c:5135
 filename_mknodat+0x3cb/0x660 fs/namei.c:-1
 __do_sys_mknodat fs/namei.c:5216 [inline]
 __se_sys_mknodat+0x3b/0x150 fs/namei.c:5212
 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: 0033:0x7f8cd159de59
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:00007f8cd247ffe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000103
RAX: ffffffffffffffda RBX: 00007f8cd1826090 RCX: 00007f8cd159de59
RDX: 00000000000021c0 RSI: 0000200000000040 RDI: ffffffffffffff9c
RBP: 00007f8cd1633e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000103 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8cd1826128 R14: 00007f8cd1826090 R15: 00007ffe0033bab8
 </TASK>