hfsplus: new node 0 already hashed?
------------[ cut here ]------------
WARNING: CPU: 0 PID: 7556 at fs/hfsplus/bnode.c:584 hfsplus_bnode_create+0x3dd/0x460 fs/hfsplus/bnode.c:583
Modules linked in:
CPU: 1 PID: 7556 Comm: syz.9.582 Not tainted 5.15.176-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:hfsplus_bnode_create+0x3dd/0x460 fs/hfsplus/bnode.c:584
Code: 8a 44 89 e6 e8 a4 eb fb 07 e9 4c fd ff ff e8 aa 7d 3e ff 4c 89 ef e8 72 b5 06 08 48 c7 c7 a0 81 bf 8a 44 89 e6 e8 83 eb fb 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:ffffc90002f8f510 EFLAGS: 00010246
RAX: 0000000000000023 RBX: ffff88801ede4600 RCX: 928ec55f24d9a000
RDX: ffffc90016804000 RSI: 000000000001b256 RDI: 000000000001b257
RBP: 0000000000000000 R08: ffffffff8166aa6c R09: ffffed10171c67a8
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: ffff8880788360e0 R14: ffff888078836000 R15: dffffc0000000000
FS:  00007f510e0216c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002001b000 CR3: 00000000625da000 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+0xeea/0x1ba0 fs/hfsplus/catalog.c:308
 hfsplus_symlink+0x132/0x260 fs/hfsplus/dir.c:453
 vfs_symlink+0x247/0x3d0 fs/namei.c:4429
 do_symlinkat+0x1fd/0x600 fs/namei.c:4458
 __do_sys_symlink fs/namei.c:4480 [inline]
 __se_sys_symlink fs/namei.c:4478 [inline]
 __x64_sys_symlink+0x7a/0x90 fs/namei.c:4478
 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: 0033:0x7f51101d1d29
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:00007f510e021038 EFLAGS: 00000246 ORIG_RAX: 0000000000000058
RAX: ffffffffffffffda RBX: 00007f51103c2080 RCX: 00007f51101d1d29
RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000020000440
RBP: 00007f511024db08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f51103c2080 R15: 00007ffdbe5d1578
 </TASK>