hfsplus: new node 0 already hashed?
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WARNING: fs/hfsplus/bnode.c:642 at hfsplus_bnode_create+0x45d/0x4f0 fs/hfsplus/bnode.c:642, CPU#0: syz-executor395/5603
Modules linked in:
CPU: 0 UID: 0 PID: 5603 Comm: syz-executor395 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:hfsplus_bnode_create+0x45d/0x4f0 fs/hfsplus/bnode.c:642
Code: 89 8b 89 ee e8 14 7b 79 fe e9 cf fc ff ff e8 9a ae 18 ff 4c 89 f7 e8 32 91 ab 08 48 c7 c7 c0 10 89 8b 89 ee e8 f4 7a 79 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:ffffc90004a075c0 EFLAGS: 00010246
RAX: 0000000000000023 RBX: dffffc0000000000 RCX: 67e1f9cc6c2eb800
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff52000940e69 R12: 0000000000000000
R13: ffff88803877e000 R14: ffff88803877e0d0 R15: ffff8880281af600
FS:  000055557b7514c0(0000) GS:ffff888125bcb000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000004571c000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 hfs_bnode_split+0xd2/0x1070 fs/hfsplus/brec.c:266
 hfsplus_brec_insert+0x3bb/0xde0 fs/hfsplus/brec.c:110
 hfsplus_create_cat+0x437/0x1240 fs/hfsplus/catalog.c:292
 hfsplus_mknod+0x184/0x3c0 fs/hfsplus/dir.c:532
 vfs_mknod+0x443/0x610 fs/namei.c:5269
 filename_mknodat+0x3cf/0x670 fs/namei.c:-1
 __do_sys_mknod fs/namei.c:5356 [inline]
 __se_sys_mknod+0x3a/0x150 fs/namei.c:5353
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f048c0433e9
Code: c0 79 93 eb d5 48 8d 7c 1d 00 eb 99 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 d8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc01126368 EFLAGS: 00000246 ORIG_RAX: 0000000000000085
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f048c0433e9
RDX: 0000000000000701 RSI: 0000000000001000 RDI: 0000200000000400
RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc011263a0
R10: 00007ffc01126370 R11: 0000000000000246 R12: 00007ffc011263a0
R13: 0000000000000002 R14: 431bde82d7b634db R15: 00007f048c0a204b
 </TASK>