hfsplus: new node 0 already hashed?
------------[ cut here ]------------
WARNING: CPU: 1 PID: 5060 at fs/hfsplus/bnode.c:573 hfsplus_bnode_create+0x14c/0x530 fs/hfsplus/bnode.c:573
Modules linked in:
CPU: 1 PID: 5060 Comm: syz-executor789 Not tainted 6.7.0-rc4-syzkaller-00358-gf2e8a57ee903 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
RIP: 0010:hfsplus_bnode_create+0x14c/0x530 fs/hfsplus/bnode.c:573
Code: 36 2e ff 45 39 fc 75 9e e8 f1 3b 2e ff 4c 89 f7 e8 d9 86 2a 08 e8 e4 3b 2e ff 44 89 e6 48 c7 c7 c0 c1 e7 8a e8 f5 16 11 ff 90 <0f> 0b 90 e8 cc 3b 2e ff 48 89 d8 48 83 c4 18 5b 5d 41 5c 41 5d 41
RSP: 0018:ffffc900033df2b0 EFLAGS: 00010286
RAX: 0000000000000023 RBX: ffff88801c942000 RCX: ffffffff81697219
RDX: 0000000000000000 RSI: ffffffff8169f6c2 RDI: 0000000000000005
RBP: ffff88802107c000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000001 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88802107c0e0 R15: 0000000000000000
FS:  000055555712b380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002000f000 CR3: 00000000166bb000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 hfsplus_bmap_alloc+0x728/0x830 fs/hfsplus/btree.c:415
 hfs_btree_inc_height.isra.0+0x100/0x8b0 fs/hfsplus/brec.c:475
 hfsplus_brec_insert+0x9fe/0xc50 fs/hfsplus/brec.c:75
 __hfsplus_ext_write_extent+0x49c/0x5e0 fs/hfsplus/extents.c:107
 __hfsplus_ext_cache_extent+0x98/0x9d0 fs/hfsplus/extents.c:186
 hfsplus_ext_read_extent+0x1fc/0x240 fs/hfsplus/extents.c:218
 hfsplus_file_extend+0x695/0x1090 fs/hfsplus/extents.c:461
 hfsplus_get_block+0x1ae/0x9e0 fs/hfsplus/extents.c:245
 __block_write_begin_int+0x3c0/0x1560 fs/buffer.c:2119
 __block_write_begin fs/buffer.c:2168 [inline]
 block_write_begin+0xb1/0x490 fs/buffer.c:2227
 cont_write_begin+0x530/0x730 fs/buffer.c:2582
 hfsplus_write_begin+0x87/0x140 fs/hfsplus/inode.c:52
 generic_perform_write+0x278/0x600 mm/filemap.c:3918
 __generic_file_write_iter+0x1f9/0x240 mm/filemap.c:4013
 generic_file_write_iter+0xe3/0x350 mm/filemap.c:4039
 call_write_iter include/linux/fs.h:2020 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x64f/0xdf0 fs/read_write.c:584
 ksys_write+0x12f/0x250 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fe17e5f8639
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:00007ffc578a7208 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007ffc578a73d8 RCX: 00007fe17e5f8639
RDX: 0000000000029000 RSI: 0000000020000040 RDI: 0000000000000004
RBP: 00007fe17e66b610 R08: 0000000000000000 R09: 00007ffc578a73d8
R10: 0000000000000642 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffc578a73c8 R14: 0000000000000001 R15: 0000000000000001
 </TASK>