hfsplus: new node 0 already hashed?
------------[ cut here ]------------
WARNING: CPU: 1 PID: 4781 at fs/hfsplus/bnode.c:584 hfsplus_bnode_create+0x3dd/0x460 fs/hfsplus/bnode.c:583
Modules linked in:
CPU: 1 PID: 4781 Comm: syz.0.300 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:ffffc90003257090 EFLAGS: 00010246
RAX: 0000000000000023 RBX: ffff88801ce55f00 RCX: d427ccede2673800
RDX: ffffc90003add000 RSI: 0000000000006ad2 RDI: 0000000000006ad3
RBP: 0000000000000000 R08: ffffffff8166892c R09: fffff5200064ad51
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: ffff88807d3280e0 R14: ffff88807d328000 R15: dffffc0000000000
FS:  00007fede53b76c0(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fedddf96000 CR3: 00000000651e4000 CR4: 00000000003506e0
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+0x498/0x1ba0 fs/hfsplus/catalog.c:292
 hfsplus_mknod+0x166/0x2a0 fs/hfsplus/dir.c:494
 lookup_open fs/namei.c:3462 [inline]
 open_last_lookups fs/namei.c:3532 [inline]
 path_openat+0x130a/0x2f20 fs/namei.c:3739
 do_filp_open+0x21c/0x460 fs/namei.c:3769
 do_sys_openat2+0x13b/0x4f0 fs/open.c:1253
 do_sys_open fs/open.c:1269 [inline]
 __do_sys_creat fs/open.c:1343 [inline]
 __se_sys_creat fs/open.c:1337 [inline]
 __x64_sys_creat+0x11f/0x160 fs/open.c:1337
 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: 0033:0x7fede6f599f9
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:00007fede53b7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 00007fede70e8058 RCX: 00007fede6f599f9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000580
RBP: 00007fede6fc78ee R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fede70e8058 R15: 00007ffdfeb26088
 </TASK>