hfsplus: new node 0 already hashed?
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5415 at fs/hfsplus/bnode.c:573 hfsplus_bnode_create+0x3b6/0x440 fs/hfsplus/bnode.c:573
Modules linked in:
CPU: 0 UID: 0 PID: 5415 Comm: syz.3.13 Not tainted 6.12.0-rc1-syzkaller-00165-g360c1f1f24c6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:hfsplus_bnode_create+0x3b6/0x440 fs/hfsplus/bnode.c:573
Code: 44 89 e6 e8 dc 20 36 09 e9 78 fd ff ff e8 52 40 11 ff 4c 89 ff e8 1a e8 42 09 48 c7 c7 c0 1a 22 8c 44 89 e6 e8 bb 20 36 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:ffffc9000451f078 EFLAGS: 00010246
RAX: 0000000000000023 RBX: ffff888031a35600 RCX: 9b0951b355108b00
RDX: ffffc90009ec9000 RSI: 000000000000330e RDI: 000000000000330f
RBP: 0000000000000000 R08: ffffffff81749ebc R09: 1ffff920008a3dac
R10: dffffc0000000000 R11: fffff520008a3dad R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88807ca3a000 R15: ffff88807ca3a0e0
FS:  00007f2846fdc6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020007f82 CR3: 000000006d2fe000 CR4: 00000000003526f0
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+0xef5/0x1b70 fs/hfsplus/catalog.c:308
 hfsplus_mknod+0x16a/0x2a0 fs/hfsplus/dir.c:494
 lookup_open fs/namei.c:3595 [inline]
 open_last_lookups fs/namei.c:3694 [inline]
 path_openat+0x1c03/0x3590 fs/namei.c:3930
 do_filp_open+0x235/0x490 fs/namei.c:3960
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1415
 do_sys_open fs/open.c:1430 [inline]
 __do_sys_openat fs/open.c:1446 [inline]
 __se_sys_openat fs/open.c:1441 [inline]
 __x64_sys_openat+0x247/0x2a0 fs/open.c:1441
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f284617dff9
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:00007f2846fdc038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f2846335f80 RCX: 00007f284617dff9
RDX: 000000000000275a RSI: 0000000020000280 RDI: ffffffffffffff9c
RBP: 00007f28461f0296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f2846335f80 R15: 00007ffe9241b928
 </TASK>