R13: 0000000000000000 R14: 00007f144df36160 R15: 00007fff8687a258
 </TASK>
hfs: new node 0 already hashed?
------------[ cut here ]------------
WARNING: CPU: 0 PID: 7299 at fs/hfs/bnode.c:422 hfs_bnode_create+0x3b6/0x440 fs/hfs/bnode.c:422
Modules linked in:
CPU: 0 UID: 0 PID: 7299 Comm: syz.4.294 Not tainted 6.12.0-syzkaller-09073-g9f16d5e6f220 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:hfs_bnode_create+0x3b6/0x440 fs/hfs/bnode.c:422
Code: 44 89 e6 e8 dc a7 45 09 e9 78 fd ff ff e8 02 0f 17 ff 4c 89 ff e8 0a 64 52 09 48 c7 c7 80 91 21 8c 44 89 e6 e8 bb a7 45 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:ffffc90004607058 EFLAGS: 00010246
RAX: 000000000000001f RBX: ffff888034d1cd00 RCX: eb41b50c7aa19500
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff8175719c R09: fffffbfff1cfa8a0
R10: dffffc0000000000 R11: fffffbfff1cfa8a0 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88804fcf8000 R15: ffff88804fcf80e0
FS:  00007f144eb746c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f144eb73f98 CR3: 000000005074e000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 hfs_bmap_alloc+0x5a6/0x650 fs/hfs/btree.c:291
 hfs_btree_inc_height+0x11e/0xd20 fs/hfs/brec.c:471
 hfs_brec_insert+0x723/0xbd0 fs/hfs/brec.c:148
 __hfs_ext_write_extent+0x2f2/0x4f0 fs/hfs/extent.c:124
 __hfs_ext_cache_extent+0x6a/0x990 fs/hfs/extent.c:174
 hfs_ext_read_extent fs/hfs/extent.c:202 [inline]
 hfs_extend_file+0x344/0x1450 fs/hfs/extent.c:401
 hfs_get_block+0x3e4/0xb60 fs/hfs/extent.c:353
 __block_write_begin_int+0x50e/0x1a70 fs/buffer.c:2116
 block_write_begin fs/buffer.c:2226 [inline]
 cont_write_begin+0x6e2/0x9d0 fs/buffer.c:2577
 hfs_write_begin+0x68/0xb0 fs/hfs/inode.c:52
 generic_perform_write+0x346/0x6d0 mm/filemap.c:4055
 generic_file_write_iter+0xae/0x310 mm/filemap.c:4182
 new_sync_write fs/read_write.c:586 [inline]
 vfs_write+0xaed/0xd30 fs/read_write.c:679
 ksys_write+0x18f/0x2b0 fs/read_write.c:731
 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: 0033:0x7f144dd7e819
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:00007f144eb74038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f144df36160 RCX: 00007f144dd7e819
RDX: 000000000000fcb8 RSI: 0000000020000140 RDI: 0000000000000009
RBP: 00007f144eb74090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 0000000000000000 R14: 00007f144df36160 R15: 00007fff8687a258
 </TASK>