option from the mount to silence this warning. ======================================================= hfsplus: new node 0 already hashed? ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5062 at fs/hfsplus/bnode.c:573 hfsplus_bnode_create+0x14c/0x530 fs/hfsplus/bnode.c:573 Modules linked in: CPU: 0 PID: 5062 Comm: syz-executor286 Not tainted 6.8.0-rc1-syzkaller-00049-g6098d87eaf31 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 RIP: 0010:hfsplus_bnode_create+0x14c/0x530 fs/hfsplus/bnode.c:573 Code: 65 29 ff 45 39 fc 75 9e e8 61 6a 29 ff 4c 89 f7 e8 d9 e6 32 08 e8 54 6a 29 ff 44 89 e6 48 c7 c7 00 68 e8 8a e8 45 2d 0c ff 90 <0f> 0b 90 e8 3c 6a 29 ff 48 89 d8 48 83 c4 18 5b 5d 41 5c 41 5d 41 RSP: 0018:ffffc900043f7270 EFLAGS: 00010286 RAX: 0000000000000023 RBX: ffff88802db67000 RCX: ffffffff816afbf9 RDX: 0000000000000000 RSI: ffffffff816b80c2 RDI: 0000000000000005 RBP: ffff888021cb4000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 0000000000000001 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff888021cb40e0 R15: 0000000000000000 FS: 000055555557e380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020018000 CR3: 00000000732ed000 CR4: 0000000000350ef0 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+0x4fb/0x16e0 fs/buffer.c:2103 __block_write_begin fs/buffer.c:2152 [inline] block_write_begin+0xb1/0x490 fs/buffer.c:2211 cont_write_begin+0x530/0x730 fs/buffer.c:2565 hfsplus_write_begin+0x87/0x140 fs/hfsplus/inode.c:47 generic_perform_write+0x278/0x600 mm/filemap.c:3930 __generic_file_write_iter+0x1f9/0x240 mm/filemap.c:4025 generic_file_write_iter+0xe3/0x350 mm/filemap.c:4051 call_write_iter include/linux/fs.h:2085 [inline] new_sync_write fs/read_write.c:497 [inline] vfs_write+0x6d5/0x1100 fs/read_write.c:590 ksys_write+0x12f/0x250 fs/read_write.c:643 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f85573b2639 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:00007ffd40958658 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007ffd40958828 RCX: 00007f85573b2639 RDX: 00000000175d9003 RSI: 0000000020000200 RDI: 0000000000000004 RBP: 00007f8557425610 R08: 0000000000000000 R09: 00007ffd40958828 R10: 000000000000062f R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffd40958818 R14: 0000000000000001 R15: 0000000000000001 </TASK>