hfs: new node 0 already hashed?
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5062 at fs/hfs/bnode.c:422 hfs_bnode_create+0x3b6/0x440 fs/hfs/bnode.c:422
Modules linked in:
CPU: 0 PID: 5062 Comm: syz-executor174 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
RIP: 0010:hfs_bnode_create+0x3b6/0x440 fs/hfs/bnode.c:422
Code: 44 89 e6 e8 ac 7e ec 08 e9 78 fd ff ff e8 72 e4 18 ff 4c 89 ff e8 4a 45 fa 08 48 c7 c7 a0 49 c1 8b 44 89 e6 e8 8b 7e ec 08 90 <0f> 0b 90 eb af 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 83 fc ff ff 48
RSP: 0018:ffffc90003aaf758 EFLAGS: 00010246
RAX: 000000000000001f RBX: ffff88802b9f4e00 RCX: a4a1c99d4b333200
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff8175c06c R09: 1ffff92000755e8c
R10: dffffc0000000000 R11: fffff52000755e8d R12: 0000000000000000
R13: dffffc0000000000 R14: ffff888022e24000 R15: ffff888022e240e0
FS:  000055555f43b480(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056025e4c71b0 CR3: 0000000077a32000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 hfs_bmap_alloc+0x5a6/0x650 fs/hfs/btree.c:291
 hfs_bnode_split+0xde/0x1110 fs/hfsplus/brec.c:245
 hfs_brec_insert+0x389/0xbd0 fs/hfs/brec.c:102
 hfs_cat_create+0x3df/0x970 fs/hfs/catalog.c:118
 hfs_mkdir+0x6c/0xe0 fs/hfs/dir.c:232
 vfs_mkdir+0x2f9/0x4b0 fs/namei.c:4126
 do_mkdirat+0x264/0x3a0 fs/namei.c:4149
 __do_sys_mkdirat fs/namei.c:4164 [inline]
 __se_sys_mkdirat fs/namei.c:4162 [inline]
 __x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4162
 do_syscall_64+0xfb/0x240
 entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7f5ff0d25eb9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 17 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fffea68a378 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007fffea68a380 RCX: 00007f5ff0d25eb9
RDX: 0000000000000000 RSI: 0000000020000000 RDI: 00000000ffffff9c
RBP: 00007fffea68a388 R08: 00007fffea68a388 R09: 00007f5ff0cf1c90
R10: 00007fffea68a380 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffea68a5e8 R14: 0000000000000001 R15: 0000000000000001
 </TASK>