hfsplus: new node 0 already hashed?
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1
WARNING: fs/hfsplus/bnode.c:634 at hfsplus_bnode_create+0x45d/0x4f0 fs/hfsplus/bnode.c:634, CPU#0: syz.2.556/11017
Modules linked in:
CPU: 0 UID: 0 PID: 11017 Comm: syz.2.556 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:hfsplus_bnode_create+0x45d/0x4f0 fs/hfsplus/bnode.c:634
Code: 87 8b 89 ee e8 44 2f 7f fe e9 cf fc ff ff e8 6a 02 1d ff 4c 89 f7 e8 02 8d 9b 08 48 c7 c7 a0 bc 87 8b 89 ee e8 24 2f 7f fe 90 <0f> 0b 90 49 c7 c5 ef ff ff ff eb a9 44 89 f9 80 e1 07 80 c1 03 38
RSP: 0018:ffffc900038c75e0 EFLAGS: 00010246
RAX: 0000000000000023 RBX: dffffc0000000000 RCX: db0620017cf76200
RDX: ffffc900047e9000 RSI: 0000000000001087 RDI: 0000000000001088
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff52000718e6d R12: 0000000000000000
R13: ffff88801b318000 R14: ffff88801b3180d0 R15: ffff88802b4a7400
FS:  00007f31f4e166c0(0000) GS:ffff888125c4c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe70c5f598 CR3: 000000003cc16000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 hfs_bnode_split+0xd2/0x1070 fs/hfsplus/brec.c:248
 hfsplus_brec_insert+0x3bb/0xde0 fs/hfsplus/brec.c:100
 hfsplus_create_cat+0xa7e/0x1240 fs/hfsplus/catalog.c:308
 hfsplus_symlink+0x13c/0x390 fs/hfsplus/dir.c:482
 vfs_symlink+0x18b/0x330 fs/namei.c:5660
 filename_symlinkat+0x1cd/0x420 fs/namei.c:5685
 __do_sys_symlink fs/namei.c:5712 [inline]
 __se_sys_symlink+0x4d/0x2b0 fs/namei.c:5708
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f31f6bbde59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f31f4e16028 EFLAGS: 00000246 ORIG_RAX: 0000000000000058
RAX: ffffffffffffffda RBX: 00007f31f6e45fa0 RCX: 00007f31f6bbde59
RDX: 0000000000000000 RSI: 0000200000001bc0 RDI: 0000200000000200
RBP: 00007f31f6c53e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f31f6e46038 R14: 00007f31f6e45fa0 R15: 00007ffd19d16688
 </TASK>