hfsplus: new node 0 already hashed?
------------[ cut here ]------------
WARNING: CPU: 1 PID: 6489 at fs/hfsplus/bnode.c:573 hfsplus_bnode_create+0x3b6/0x440 fs/hfsplus/bnode.c:573
Modules linked in:
CPU: 1 PID: 6489 Comm: syz-executor.0 Not tainted 6.8.0-rc6-syzkaller-00024-ge326df53af00 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
RIP: 0010:hfsplus_bnode_create+0x3b6/0x440 fs/hfsplus/bnode.c:573
Code: 44 89 e6 e8 0c 61 e4 08 e9 78 fd ff ff e8 32 54 1c ff 4c 89 ff e8 4a 22 f2 08 48 c7 c7 80 f6 c0 8b 44 89 e6 e8 eb 60 e4 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:ffffc9000374ee78 EFLAGS: 00010246
RAX: 0000000000000023 RBX: ffff8880295aa400 RCX: d0bc00546f355900
RDX: ffffc90004b01000 RSI: 0000000000014e50 RDI: 0000000000014e51
RBP: 0000000000000000 R08: ffffffff81753e5c R09: 1ffff920006e9d70
R10: dffffc0000000000 R11: fffff520006e9d71 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88807df4a000 R15: ffff88807df4a0e0
FS:  00007f8a30f2e6c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31639000 CR3: 0000000011d62000 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_btree_inc_height+0x11e/0xdc0 fs/hfsplus/brec.c:475
 hfsplus_brec_insert+0x166/0xde0 fs/hfsplus/brec.c:75
 __hfsplus_ext_write_extent+0x36b/0x5c0 fs/hfsplus/extents.c:107
 __hfsplus_ext_cache_extent+0x84/0xe10 fs/hfsplus/extents.c:186
 hfsplus_ext_read_extent fs/hfsplus/extents.c:218 [inline]
 hfsplus_file_extend+0x48c/0x1b70 fs/hfsplus/extents.c:461
 hfsplus_get_block+0x406/0x14f0 fs/hfsplus/extents.c:245
 get_more_blocks fs/direct-io.c:647 [inline]
 do_direct_IO fs/direct-io.c:935 [inline]
 __blockdev_direct_IO+0x1d6d/0x49b0 fs/direct-io.c:1248
 blockdev_direct_IO include/linux/fs.h:3117 [inline]
 hfsplus_direct_IO+0xf8/0x1e0 fs/hfsplus/inode.c:130
 generic_file_direct_write+0x1e7/0x400 mm/filemap.c:3855
 __generic_file_write_iter+0x129/0x230 mm/filemap.c:4011
 generic_file_write_iter+0xaf/0x310 mm/filemap.c:4051
 call_write_iter include/linux/fs.h:2087 [inline]
 new_sync_write fs/read_write.c:497 [inline]
 vfs_write+0xa81/0xcb0 fs/read_write.c:590
 ksys_write+0x1a0/0x2c0 fs/read_write.c:643
 do_syscall_64+0xf9/0x240
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f8a3027dda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8a30f2e0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8a303abf80 RCX: 00007f8a3027dda9
RDX: 000000000003fe00 RSI: 0000000020000200 RDI: 0000000000000006
RBP: 00007f8a302ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f8a303abf80 R15: 00007ffe080cd8f8
 </TASK>