hfsplus: new node 0 already hashed?
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1
WARNING: fs/hfsplus/bnode.c:631 at hfsplus_bnode_create+0x45d/0x4f0 fs/hfsplus/bnode.c:631, CPU#1: syz.9.1156/20612
Modules linked in:
CPU: 1 UID: 0 PID: 20612 Comm: syz.9.1156 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:hfsplus_bnode_create+0x45d/0x4f0 fs/hfsplus/bnode.c:631
Code: 46 8b 89 ee e8 64 ca 88 fe e9 cf fc ff ff e8 ba 83 24 ff 4c 89 f7 e8 c2 18 76 08 48 c7 c7 20 e5 46 8b 89 ee e8 44 ca 88 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:ffffc900066c7500 EFLAGS: 00010246
RAX: 0000000000000023 RBX: dffffc0000000000 RCX: 9c0f90e01a30f700
RDX: ffffc90017ba9000 RSI: 0000000000002f8c RDI: 0000000000002f8d
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff52000cd8e51 R12: 0000000000000000
R13: ffff8880327b4000 R14: ffff8880327b40d0 R15: ffff88805e8ed200
FS:  00007f8b6619e6c0(0000) GS:ffff888126695000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555799a24e8 CR3: 0000000032bc8000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 hfsplus_bmap_alloc+0x747/0xb00 fs/hfsplus/btree.c:421
 hfs_bnode_split+0xd4/0x1090 fs/hfsplus/brec.c:245
 hfsplus_brec_insert+0x3bc/0xd70 fs/hfsplus/brec.c:100
 hfsplus_create_cat+0x426/0x11c0 fs/hfsplus/catalog.c:292
 hfsplus_mknod+0x16a/0x2b0 fs/hfsplus/dir.c:532
 vfs_create+0x2d3/0x470 fs/namei.c:4176
 filename_mknodat+0x3ec/0x670 fs/namei.c:5142
 __do_sys_mknod fs/namei.c:5179 [inline]
 __se_sys_mknod+0x3a/0x150 fs/namei.c:5176
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8b67f4c629
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:00007f8b6619e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000085
RAX: ffffffffffffffda RBX: 00007f8b681c5fa0 RCX: 00007f8b67f4c629
RDX: 0000000000000713 RSI: 0000000000000800 RDI: 0000200000000500
RBP: 00007f8b67fe2b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8b681c6038 R14: 00007f8b681c5fa0 R15: 00007fff9938a228
 </TASK>