hfsplus: new node 0 already hashed?
------------[ cut here ]------------
WARNING: CPU: 1 PID: 5059 at fs/hfsplus/bnode.c:573 hfsplus_bnode_create+0x3b6/0x440 fs/hfsplus/bnode.c:573
Modules linked in:
CPU: 1 PID: 5059 Comm: syz-executor428 Not tainted 6.8.0-rc4-syzkaller-00034-g8d3dea210042 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
RIP: 0010:hfsplus_bnode_create+0x3b6/0x440 fs/hfsplus/bnode.c:573
Code: 44 89 e6 e8 0c ba e3 08 e9 78 fd ff ff e8 12 5d 1c ff 4c 89 ff e8 3a 7b f1 08 48 c7 c7 c0 f5 c0 8b 44 89 e6 e8 eb b9 e3 08 90 <0f> 0b 90 eb af 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 83 fc ff ff 48
RSP: 0018:ffffc9000421f078 EFLAGS: 00010246
RAX: 0000000000000023 RBX: ffff88801b2c2cc0 RCX: 226504912bdb6700
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff81753d4c R09: 1ffff92000843db0
R10: dffffc0000000000 R11: fffff52000843db1 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff888026282000 R15: ffff8880262820e0
FS:  0000555556527380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055834a972c88 CR3: 0000000024e2e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 hfsplus_bmap_alloc+0x59a/0x640 fs/hfsplus/btree.c:415
 hfs_bnode_split+0xde/0x1110 fs/hfsplus/brec.c:245
 hfsplus_brec_insert+0x3a6/0xde0 fs/hfsplus/brec.c:100
 hfsplus_create_cat+0xef5/0x1b60 fs/hfsplus/catalog.c:308
 hfsplus_mknod+0x16a/0x2a0 fs/hfsplus/dir.c:494
 lookup_open fs/namei.c:3496 [inline]
 open_last_lookups fs/namei.c:3565 [inline]
 path_openat+0x1424/0x3240 fs/namei.c:3795
 do_filp_open+0x234/0x490 fs/namei.c:3825
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1404
 do_sys_open fs/open.c:1419 [inline]
 __do_sys_openat fs/open.c:1435 [inline]
 __se_sys_openat fs/open.c:1430 [inline]
 __x64_sys_openat+0x247/0x2a0 fs/open.c:1430
 do_syscall_64+0xf9/0x240
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f4618ea2779
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:00007fffbb09ddc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fffbb09dfa8 RCX: 00007f4618ea2779
RDX: 000000000000275a RSI: 0000000020000000 RDI: 00000000ffffff9c
RBP: 00007f4618f16610 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fffbb09df98 R14: 0000000000000001 R15: 0000000000000001
 </TASK>