hfsplus: new node 0 already hashed?
------------[ cut here ]------------
WARNING: CPU: 0 PID: 6355 at fs/hfsplus/bnode.c:573 hfsplus_bnode_create+0x3b6/0x440 fs/hfsplus/bnode.c:573
Modules linked in:
CPU: 0 UID: 0 PID: 6355 Comm: syz.2.108 Not tainted 6.11.0-rc5-syzkaller-00057-g86987d84b968 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:hfsplus_bnode_create+0x3b6/0x440 fs/hfsplus/bnode.c:573
Code: 44 89 e6 e8 fc d0 2d 09 e9 78 fd ff ff e8 32 02 16 ff 4c 89 ff e8 ba e6 3a 09 48 c7 c7 00 be 01 8c 44 89 e6 e8 db d0 2d 09 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:ffffc9000398f078 EFLAGS: 00010246
RAX: 0000000000000023 RBX: ffff88801edcd000 RCX: ce96f5c37f92e300
RDX: ffffc9000dbb4000 RSI: 000000000000609b RDI: 000000000000609c
RBP: 0000000000000000 R08: ffffffff817400cc R09: 1ffff92000731db0
R10: dffffc0000000000 R11: fffff52000731db1 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88805f60a000 R15: ffff88805f60a0e0
FS:  00007f8f7e6d36c0(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8f73cb8000 CR3: 000000005fbf4000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 hfsplus_bmap_alloc+0x59a/0x640 fs/hfsplus/btree.c:415
 hfs_bnode_split+0xde/0x1110 fs/hfsplus/brec.c:245
 hfsplus_brec_insert+0x3a6/0xde0 fs/hfsplus/brec.c:100
 hfsplus_create_cat+0x49f/0x1b70 fs/hfsplus/catalog.c:292
 hfsplus_mknod+0x16a/0x2a0 fs/hfsplus/dir.c:494
 lookup_open fs/namei.c:3578 [inline]
 open_last_lookups fs/namei.c:3647 [inline]
 path_openat+0x1a9a/0x3470 fs/namei.c:3883
 do_filp_open+0x235/0x490 fs/namei.c:3913
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1416
 do_sys_open fs/open.c:1431 [inline]
 __do_sys_openat fs/open.c:1447 [inline]
 __se_sys_openat fs/open.c:1442 [inline]
 __x64_sys_openat+0x247/0x2a0 fs/open.c:1442
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8f7d979ef9
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:00007f8f7e6d3038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f8f7db15f80 RCX: 00007f8f7d979ef9
RDX: 0000000000040243 RSI: 000000002001f680 RDI: ffffffffffffff9c
RBP: 00007f8f7d9e793e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f8f7db15f80 R15: 00007ffd180036d8
 </TASK>