hfsplus: new node 0 already hashed?
------------[ cut here ]------------
WARNING: CPU: 0 PID: 7571 at fs/hfsplus/bnode.c:579 hfsplus_bnode_create+0x461/0x4f0 fs/hfsplus/bnode.c:579
Modules linked in:
CPU: 0 UID: 0 PID: 7571 Comm: syz.5.175 Not tainted 6.16.0-rc3-syzkaller-00044-g7595b66ae9de #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:hfsplus_bnode_create+0x461/0x4f0 fs/hfsplus/bnode.c:579
Code: a1 8b 89 ee e8 f0 c3 91 fe e9 cf fc ff ff e8 c6 85 2a ff 4c 89 ef e8 ce 5d cc 08 48 c7 c7 a0 9f a1 8b 89 ee e8 d0 c3 91 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:ffffc90004cef2c0 EFLAGS: 00010246
RAX: 0000000000000023 RBX: ffff888027c02000 RCX: baddca2da8904300
RDX: ffffc90004271000 RSI: 00000000000060da RDI: 00000000000060db
RBP: 0000000000000000 R08: ffffc90004ceefe7 R09: 1ffff9200099ddfc
R10: dffffc0000000000 R11: fffff5200099ddfd R12: 0000000000000000
R13: ffff888027c020e0 R14: ffff888028979c00 R15: dffffc0000000000
FS:  00007fa19f13a6c0(0000) GS:ffff888125c83000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000005000 CR3: 00000000333da000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 hfsplus_bmap_alloc+0x5af/0x640 fs/hfsplus/btree.c:415
 hfs_bnode_split+0xcc/0xef0 fs/hfsplus/brec.c:245
 hfsplus_brec_insert+0x38f/0xcc0 fs/hfsplus/brec.c:100
 hfsplus_rename_cat+0x51c/0xde0 fs/hfsplus/catalog.c:491
 hfsplus_rename+0x128/0x1c0 fs/hfsplus/dir.c:552
 vfs_rename+0xb99/0xec0 fs/namei.c:5137
 do_renameat2+0x878/0xc50 fs/namei.c:5286
 __do_sys_rename fs/namei.c:5333 [inline]
 __se_sys_rename fs/namei.c:5331 [inline]
 __x64_sys_rename+0x82/0x90 fs/namei.c:5331
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa19e38e929
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:00007fa19f13a038 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007fa19e5b5fa0 RCX: 00007fa19e38e929
RDX: 0000000000000000 RSI: 0000200000000f40 RDI: 00002000000023c0
RBP: 00007fa19e410b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fa19e5b5fa0 R15: 00007ffc47bf9098
 </TASK>