RSP: 002b:00007ffecc9460a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007ffecc9460d0 RCX: 00007f368e8d11e9
RDX: 00000000000ffe00 RSI: 0000000020004200 RDI: 0000000000000004
RBP: 0000000000000001 R08: 00007ffecc945e47 R09: 00007ffecc9460f0
R10: 0000000000000001 R11: 0000000000000246 R12: 00007ffecc9460cc
R13: 0000000000000024 R14: 431bde82d7b634db R15: 00007ffecc946110
 </TASK>
hfs: new node 0 already hashed?
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5067 at fs/hfs/bnode.c:422 hfs_bnode_create+0x3b1/0x440 fs/hfs/bnode.c:421
Modules linked in:
CPU: 0 PID: 5067 Comm: syz-executor175 Not tainted 6.6.0-rc1-syzkaller-00115-g9fdfb15a3dbf #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
RIP: 0010:hfs_bnode_create+0x3b1/0x440 fs/hfs/bnode.c:422
Code: 8b 44 89 e6 e8 d0 db 5e 08 e9 7c fd ff ff e8 96 2b 25 ff 4c 89 ff e8 9e 49 6b 08 48 c7 c7 e0 5f 20 8b 44 89 e6 e8 af db 5e 08 <0f> 0b eb b5 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 89 fc ff ff 48 89
RSP: 0018:ffffc90004196fd8 EFLAGS: 00010246
RAX: 000000000000001f RBX: ffff88801d04fb00 RCX: d0fd58c6c1641800
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff8170bdac R09: 1ffff92000832d68
R10: dffffc0000000000 R11: fffff52000832d69 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88807d71c000 R15: ffff88807d71c0e0
FS:  0000555556430380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020008000 CR3: 0000000078be1000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 hfs_bmap_alloc+0x5a6/0x640 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+0x344/0x1440 fs/hfs/extent.c:401
 hfs_get_block+0x3e4/0xb60 fs/hfs/extent.c:353
 __block_write_begin_int+0x555/0x1a40 fs/buffer.c:2107
 __block_write_begin fs/buffer.c:2157 [inline]
 block_write_begin+0x9b/0x1e0 fs/buffer.c:2216
 cont_write_begin+0x643/0x880 fs/buffer.c:2573
 hfs_write_begin+0x8a/0xd0 fs/hfs/inode.c:58
 generic_perform_write+0x31b/0x630 mm/filemap.c:3942
 generic_file_write_iter+0xaf/0x310 mm/filemap.c:4063
 call_write_iter include/linux/fs.h:1985 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x782/0xaf0 fs/read_write.c:584
 ksys_write+0x1a0/0x2c0 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f368e8d11e9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 18 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:00007ffecc9460a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007ffecc9460d0 RCX: 00007f368e8d11e9
RDX: 00000000000ffe00 RSI: 0000000020004200 RDI: 0000000000000004
RBP: 0000000000000001 R08: 00007ffecc945e47 R09: 00007ffecc9460f0
R10: 0000000000000001 R11: 0000000000000246 R12: 00007ffecc9460cc
R13: 0000000000000024 R14: 431bde82d7b634db R15: 00007ffecc946110
 </TASK>