hfsplus: new node 0 already hashed?
------------[ cut here ]------------
WARNING: fs/hfsplus/bnode.c:579 at hfsplus_bnode_create+0x461/0x4f0 fs/hfsplus/bnode.c:579, CPU#0: syz.1.2223/20069
Modules linked in:
CPU: 0 UID: 0 PID: 20069 Comm: syz.1.2223 Not tainted 6.16.0-rc5-next-20250711-syzkaller #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 00 b8 8e fe e9 cf fc ff ff e8 a6 d0 26 ff 4c 89 ef e8 ee dd e3 08 48 c7 c7 60 d2 a1 8b 89 ee e8 e0 b7 8e 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:ffffc900033e72e0 EFLAGS: 00010246
RAX: 0000000000000023 RBX: ffff88807b8f6000 RCX: 06a6f228a0975e00
RDX: ffffc9000d98d000 RSI: 0000000000007bea RDI: 0000000000007beb
RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bfa4d8 R12: 0000000000000000
R13: ffff88807b8f60e0 R14: ffff888033c77300 R15: dffffc0000000000
FS:  00007f29367e06c0(0000) GS:ffff888125bc6000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000000a6d74000 CR4: 00000000003526f0
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+0xbd7/0xf00 fs/namei.c:5129
 do_renameat2+0x6ce/0xa80 fs/namei.c:5278
 __do_sys_rename fs/namei.c:5325 [inline]
 __se_sys_rename fs/namei.c:5323 [inline]
 __x64_sys_rename+0x82/0x90 fs/namei.c:5323
 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: 0033:0x7f293598e929
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:00007f29367e0038 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007f2935bb5fa0 RCX: 00007f293598e929
RDX: 0000000000000000 RSI: 0000200000000f40 RDI: 0000200000000600
RBP: 00007f2935a10b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f2935bb5fa0 R15: 00007ffecc812138
 </TASK>