hfs: new node 0 already hashed?
------------[ cut here ]------------
WARNING: CPU: 0 PID: 8576 at fs/hfs/bnode.c:438 hfs_bnode_create+0x3d1/0x450 fs/hfs/bnode.c:437
Modules linked in:
CPU: 0 PID: 8576 Comm: syz.0.654 Not tainted 5.15.185-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:hfs_bnode_create+0x3d1/0x450 fs/hfs/bnode.c:438
Code: 74 1f 8a 89 ee e8 4f 21 6a 07 e9 57 fd ff ff e8 65 f4 4a ff 4c 89 ef e8 6d fd 7d 07 48 c7 c7 a0 74 1f 8a 89 ee e8 2f 21 6a 07 <0f> 0b eb b7 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 63 fc ff ff 4c
RSP: 0018:ffffc900039df3b0 EFLAGS: 00010246
RAX: 000000000000001f RBX: ffff888078c98000 RCX: 95985d48cf242000
RDX: ffffc9000e79b000 RSI: 000000000000527c RDI: 000000000000527d
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed10172067a8
R10: ffffed10172067a8 R11: 1ffff110172067a7 R12: 0000000000000000
R13: ffff888078c980e0 R14: ffff888029acd700 R15: dffffc0000000000
FS:  00007fbb58bd56c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8388052000 CR3: 000000005382e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 hfs_bmap_alloc+0x5b2/0x660 fs/hfs/btree.c:288
 hfs_btree_inc_height+0xf3/0xac0 fs/hfs/brec.c:471
 hfs_brec_insert+0x73e/0xbc0 fs/hfs/brec.c:148
 hfs_cat_create+0x4e7/0x8d0 fs/hfs/catalog.c:131
 hfs_create+0x62/0xd0 fs/hfs/dir.c:202
 lookup_open fs/namei.c:3462 [inline]
 open_last_lookups fs/namei.c:3532 [inline]
 path_openat+0x11e1/0x2f30 fs/namei.c:3739
 do_filp_open+0x1b3/0x3e0 fs/namei.c:3769
 do_sys_openat2+0x142/0x4a0 fs/open.c:1253
 do_sys_open fs/open.c:1269 [inline]
 __do_sys_openat fs/open.c:1285 [inline]
 __se_sys_openat fs/open.c:1280 [inline]
 __x64_sys_openat+0x135/0x160 fs/open.c:1280
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fbb5ad6d929
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fbb58bd5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fbb5af94fa0 RCX: 00007fbb5ad6d929
RDX: 0000000000101442 RSI: 00002000000000c0 RDI: ffffffffffffff9c
RBP: 00007fbb5adefb39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fbb5af94fa0 R15: 00007ffc8e7aa698
 </TASK>