hfs: new node 4 already hashed?
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1
WARNING: fs/hfs/bnode.c:520 at hfs_bnode_create+0x45a/0x4e0 fs/hfs/bnode.c:520, CPU#1: syz.2.157/6924
Modules linked in:
CPU: 1 UID: 0 PID: 6924 Comm: syz.2.157 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:hfs_bnode_create+0x45a/0x4e0 fs/hfs/bnode.c:520
Code: 47 8b 89 ee e8 07 f1 80 fe e9 d6 fc ff ff e8 4d 6c 1e ff 4c 89 ef e8 a5 b0 73 08 48 c7 c7 e0 be 47 8b 89 ee e8 e7 f0 80 fe 90 <0f> 0b 90 eb b0 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c dd fb ff ff
RSP: 0018:ffffc90008af7748 EFLAGS: 00010246
RAX: 000000000000001f RBX: ffff88803543a000 RCX: 0fef60d02f24bd00
RDX: ffffc900056f9000 RSI: 00000000000009b6 RDI: 00000000000009b7
RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff5200115ee99 R12: 0000000000000004
R13: ffff88803543a0d0 R14: ffff88805d069c00 R15: dffffc0000000000
FS:  00007fc5d2ca66c0(0000) GS:ffff888126491000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe37d36cf0 CR3: 0000000033328000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 hfs_bmap_alloc+0x5bd/0x650 fs/hfs/btree.c:326
 hfs_bnode_split+0xd4/0x1070 fs/hfsplus/brec.c:-1
 hfs_brec_insert+0x3a4/0xc80 fs/hfs/brec.c:102
 hfs_cat_create+0x50c/0x810 fs/hfs/catalog.c:131
 hfs_mkdir+0x79/0xe0 fs/hfs/dir.c:232
 vfs_mkdir+0x402/0x620 fs/namei.c:5272
 filename_mkdirat+0x289/0x520 fs/namei.c:5305
 __do_sys_mkdir fs/namei.c:5332 [inline]
 __se_sys_mkdir+0x34/0x150 fs/namei.c:5329
 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: 0033:0x7fc5d4a4ce59
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:00007fc5d2ca6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007fc5d4cc5fa0 RCX: 00007fc5d4a4ce59
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00002000000000c0
RBP: 00007fc5d4ae2d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc5d4cc6038 R14: 00007fc5d4cc5fa0 R15: 00007ffda5272aa8
 </TASK>