hfsplus: new node 0 already hashed?
------------[ cut here ]------------
WARNING: CPU: 1 PID: 7483 at fs/hfsplus/bnode.c:573 hfsplus_bnode_create+0x3b6/0x440 fs/hfsplus/bnode.c:573
Modules linked in:
CPU: 1 PID: 7483 Comm: syz-executor.2 Not tainted 6.9.0-rc4-next-20240418-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:hfsplus_bnode_create+0x3b6/0x440 fs/hfsplus/bnode.c:573
Code: 44 89 e6 e8 dc 35 02 09 e9 78 fd ff ff e8 22 7c 15 ff 4c 89 ff e8 aa 16 10 09 48 c7 c7 40 60 e1 8b 44 89 e6 e8 bb 35 02 09 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:ffffc9000adff078 EFLAGS: 00010246
RAX: 0000000000000023 RBX: ffff8880220b3b00 RCX: 2963efed78a43f00
RDX: ffffc90012a45000 RSI: 00000000000052b9 RDI: 00000000000052ba
RBP: 0000000000000000 R08: ffffffff8176de9c R09: 1ffff920015bfdb0
R10: dffffc0000000000 R11: fffff520015bfdb1 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff8880629e8000 R15: ffff8880629e80e0
FS:  00007f4c3e1f96c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2e627000 CR3: 000000002aa96000 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:3505 [inline]
 open_last_lookups fs/namei.c:3574 [inline]
 path_openat+0x1425/0x3280 fs/namei.c:3804
 do_filp_open+0x235/0x490 fs/namei.c:3834
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1405
 do_sys_open fs/open.c:1420 [inline]
 __do_sys_open fs/open.c:1428 [inline]
 __se_sys_open fs/open.c:1424 [inline]
 __x64_sys_open+0x225/0x270 fs/open.c:1424
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4c3d47dea9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4c3e1f90c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f4c3d5ac050 RCX: 00007f4c3d47dea9
RDX: 0000000000000000 RSI: 0000000000006842 RDI: 00000000200000c0
RBP: 00007f4c3d4ca4a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f4c3d5ac050 R15: 00007ffcd7180ce8
 </TASK>