hfs: new node 0 already hashed?
------------[ cut here ]------------
WARNING: CPU: 1 PID: 5933 at fs/hfs/bnode.c:428 hfs_bnode_create+0x3c2/0x450 fs/hfs/bnode.c:428
Modules linked in:
CPU: 1 UID: 0 PID: 5933 Comm: syz-executor455 Not tainted 6.15.0-rc7-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:hfs_bnode_create+0x3c2/0x450 fs/hfs/bnode.c:428
Code: 81 8b 89 ee e8 8f b3 90 fe e9 6e fd ff ff e8 e5 13 29 ff 4c 89 ef e8 bd 2b c2 08 48 c7 c7 60 89 81 8b 89 ee e8 6f b3 90 fe 90 <0f> 0b 90 eb b0 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 75 fc ff ff
RSP: 0018:ffffc900044a7798 EFLAGS: 00010246
RAX: 000000000000001f RBX: ffff888079bd2000 RCX: c68c8f6405eac200
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffc900044a7487 R09: 1ffff92000894e90
R10: dffffc0000000000 R11: fffff52000894e91 R12: 0000000000000000
R13: ffff888079bd20e0 R14: ffff888022693700 R15: dffffc0000000000
FS:  000055556b8cb480(0000) GS:ffff8881261c2000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000000 CR3: 0000000072bb9000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 hfs_bmap_alloc+0x539/0x5c0 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_mkdir+0x6c/0xe0 fs/hfs/dir.c:232
 vfs_mkdir+0x306/0x510 fs/namei.c:4359
 do_mkdirat+0x247/0x590 fs/namei.c:4392
 __do_sys_mkdirat fs/namei.c:4409 [inline]
 __se_sys_mkdirat fs/namei.c:4407 [inline]
 __x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4407
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f931e46ff79
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 17 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fffad067058 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00656d69742e7166 RCX: 00007f931e46ff79
RDX: 0000000000000000 RSI: 0000200000000000 RDI: 00000000ffffff9c
RBP: 00007fffad067068 R08: 00007fffad067068 R09: 00007f931e43bd20
R10: 00007fffad067060 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffad0672c8 R14: 0000000000000001 R15: 0000000000000001
 </TASK>