hfsplus: new node 0 already hashed?
------------[ cut here ]------------
WARNING: CPU: 0 PID: 7491 at fs/hfsplus/bnode.c:584 hfsplus_bnode_create+0x3dd/0x460 fs/hfsplus/bnode.c:583
Modules linked in:
CPU: 0 PID: 7491 Comm: syz.4.569 Not tainted 5.15.164-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:hfsplus_bnode_create+0x3dd/0x460 fs/hfsplus/bnode.c:584
Code: 8a 44 89 e6 e8 74 40 f0 07 e9 4c fd ff ff e8 fa be 3e ff 4c 89 ef e8 e2 00 fb 07 48 c7 c7 e0 7b 9f 8a 44 89 e6 e8 53 40 f0 07 <0f> 0b eb b5 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 59 fc ff ff 48 89
RSP: 0018:ffffc90004487370 EFLAGS: 00010246
RAX: 0000000000000023 RBX: ffff888078589000 RCX: 4729e42a1cdaa300
RDX: ffffc90012000000 RSI: 000000000000c34d RDI: 000000000000c34e
RBP: 0000000000000000 R08: ffffffff8166892c R09: ffffed10173467a8
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: ffff88807810a0e0 R14: ffff88807810a000 R15: dffffc0000000000
FS:  00007f5843d846c0(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f443c8062d8 CR3: 0000000061954000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 hfsplus_bmap_alloc+0x63c/0x720 fs/hfsplus/btree.c:414
 hfs_bnode_split+0xda/0x1100 fs/hfsplus/brec.c:245
 hfsplus_brec_insert+0x3a2/0xdd0 fs/hfsplus/brec.c:100
 hfsplus_create_cat+0xeea/0x1ba0 fs/hfsplus/catalog.c:308
 hfsplus_link+0x4b6/0x840 fs/hfsplus/dir.c:342
 vfs_link+0x65e/0x810 fs/namei.c:4557
 do_linkat+0x5c8/0x9d0 fs/namei.c:4628
 __do_sys_linkat fs/namei.c:4656 [inline]
 __se_sys_linkat fs/namei.c:4653 [inline]
 __x64_sys_linkat+0xd9/0xf0 fs/namei.c:4653
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f5845905299
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:00007f5843d84048 EFLAGS: 00000246 ORIG_RAX: 0000000000000109
RAX: ffffffffffffffda RBX: 00007f5845a93f80 RCX: 00007f5845905299
RDX: 0000000000000007 RSI: 0000000020000180 RDI: 0000000000000007
RBP: 00007f58459728e6 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020000640 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f5845a93f80 R15: 00007ffc46dd02a8
 </TASK>