hfs: new node 0 already hashed?
------------[ cut here ]------------
WARNING: CPU: 1 PID: 7559 at fs/hfs/bnode.c:428 hfs_bnode_create+0x461/0x4f0 fs/hfs/bnode.c:428
Modules linked in:
CPU: 1 UID: 0 PID: 7559 Comm: syz.8.169 Not tainted 6.15.0-syzkaller-08486-gf66bc387efbe #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:hfs_bnode_create+0x461/0x4f0 fs/hfs/bnode.c:428
Code: a1 8b 89 ee e8 70 9d 90 fe e9 cf fc ff ff e8 f6 4e 29 ff 4c 89 ef e8 3e 7b c8 08 48 c7 c7 a0 a4 a1 8b 89 ee e8 50 9d 90 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:ffffc9000bbff740 EFLAGS: 00010246
RAX: 000000000000001f RBX: ffff88805c492000 RCX: b8f86fc3ba095700
RDX: ffffc9000e21f000 RSI: 00000000000022f0 RDI: 00000000000022f1
RBP: 0000000000000000 R08: ffffc9000bbff427 R09: 1ffff9200177fe84
R10: dffffc0000000000 R11: fffff5200177fe85 R12: 0000000000000000
R13: ffff88805c4920e0 R14: ffff888028821800 R15: dffffc0000000000
FS:  00007f76c45f66c0(0000) GS:ffff888125d98000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000a000 CR3: 0000000065aa8000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 hfs_bmap_alloc+0x5bb/0x640 fs/hfs/btree.c:291
 hfs_bnode_split+0xcc/0xef0 fs/hfsplus/brec.c:245
 hfs_brec_insert+0x377/0xbd0 fs/hfs/brec.c:102
 hfs_cat_create+0x344/0x640 fs/hfs/catalog.c:118
 hfs_create+0x66/0xe0 fs/hfs/dir.c:202
 vfs_create+0x24b/0x400 fs/namei.c:3405
 do_mknodat+0x3c6/0x4d0 fs/namei.c:4285
 __do_sys_mknodat fs/namei.c:4313 [inline]
 __se_sys_mknodat fs/namei.c:4310 [inline]
 __x64_sys_mknodat+0xa7/0xc0 fs/namei.c:4310
 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: 0033:0x7f76c678e969
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:00007f76c45f6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000103
RAX: ffffffffffffffda RBX: 00007f76c69b6080 RCX: 00007f76c678e969
RDX: 0000000000000000 RSI: 0000200000001600 RDI: 0000000000000008
RBP: 00007f76c6810ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000710 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f76c69b6080 R15: 00007ffcaac321b8
 </TASK>