hfs: new node 4 already hashed?
------------[ cut here ]------------
1
WARNING: fs/hfs/bnode.c:520 at hfs_bnode_create+0x45a/0x4e0 fs/hfs/bnode.c:520, CPU#1: syz.1.86/6363
Modules linked in:
CPU: 1 UID: 0 PID: 6363 Comm: syz.1.86 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: 67 8b 89 ee e8 37 a0 7e fe e9 d6 fc ff ff e8 3d 33 1c ff 4c 89 ef e8 b5 9d 79 08 48 c7 c7 e0 e4 67 8b 89 ee e8 17 a0 7e 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:ffffc900081cf408 EFLAGS: 00010246
RAX: 000000000000001f RBX: ffff8880322b8000 RCX: 70d46f9e30a0e800
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff52001039e31 R12: 0000000000000004
R13: ffff8880322b80d0 R14: ffff88802881be00 R15: dffffc0000000000
FS:  00007f6bd05e56c0(0000) GS:ffff888126250000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32404ff8 CR3: 000000002572e000 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_create+0x78/0xe0 fs/hfs/dir.c:196
 lookup_open fs/namei.c:4508 [inline]
 open_last_lookups fs/namei.c:4608 [inline]
 path_openat+0x1344/0x3850 fs/namei.c:4856
 do_file_open+0x23e/0x4a0 fs/namei.c:4888
 do_sys_openat2+0x115/0x200 fs/open.c:1395
 do_sys_open fs/open.c:1401 [inline]
 __do_sys_openat fs/open.c:1417 [inline]
 __se_sys_openat fs/open.c:1412 [inline]
 __x64_sys_openat+0x138/0x170 fs/open.c:1412
 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: 0033:0x7f6bd23ace59
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:00007f6bd05e5028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f6bd2626090 RCX: 00007f6bd23ace59
RDX: 0000000000042042 RSI: 0000200000000080 RDI: ffffffffffffff9c
RBP: 00007f6bd2442e6f R08: 0000000000000000 R09: 0000000000000000
R10: 00000000000001cb R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6bd2626128 R14: 00007f6bd2626090 R15: 00007fffd7281208
 </TASK>