loop0: detected capacity change from 0 to 1024
hfsplus: new node 0 already hashed?
------------[ cut here ]------------
WARNING: CPU: 0 PID: 6050 at fs/hfsplus/bnode.c:630 hfsplus_bnode_create+0x461/0x4f0 fs/hfsplus/bnode.c:630
Modules linked in:
CPU: 0 UID: 0 PID: 6050 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:hfsplus_bnode_create+0x461/0x4f0 fs/hfsplus/bnode.c:630
Code: 82 8b 89 ee e8 d0 5f 8b fe e9 cf fc ff ff e8 26 d2 23 ff 4c 89 ef e8 8e c4 ac 08 48 c7 c7 00 03 82 8b 89 ee e8 b0 5f 8b fe 90 <0f> 0b 90 eb b0 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c d6 fb ff ff
RSP: 0018:ffffc90003bcf560 EFLAGS: 00010246
RAX: 0000000000000023 RBX: ffff888023c32000 RCX: d2d63474af496e00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffc90003bcf287 R09: 1ffff92000779e50
R10: dffffc0000000000 R11: fffff52000779e51 R12: 0000000000000000
R13: ffff888023c320e0 R14: ffff888024db3500 R15: dffffc0000000000
FS:  0000555563826500(0000) GS:ffff88812613b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32363fff CR3: 000000007e5aa000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 hfsplus_bmap_alloc+0x71a/0xad0 fs/hfsplus/btree.c:421
 hfs_btree_inc_height+0xf6/0xb60 fs/hfsplus/brec.c:475
 hfsplus_brec_insert+0x12e/0xd30 fs/hfsplus/brec.c:75
 __hfsplus_ext_write_extent+0x353/0x5b0 fs/hfsplus/extents.c:107
 __hfsplus_ext_cache_extent+0x89/0xe30 fs/hfsplus/extents.c:186
 hfsplus_file_truncate+0x467/0xc70 fs/hfsplus/extents.c:596
 hfsplus_setattr+0x1c4/0x270 fs/hfsplus/inode.c:266
 notify_change+0xc1a/0xf40 fs/attr.c:546
 do_truncate+0x1a4/0x220 fs/open.c:68
 do_ftruncate+0x489/0x540 fs/open.c:195
 do_sys_ftruncate fs/open.c:210 [inline]
 __do_sys_ftruncate fs/open.c:215 [inline]
 __se_sys_ftruncate fs/open.c:213 [inline]
 __x64_sys_ftruncate+0x92/0xf0 fs/open.c:213
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7effdfb8f6c9
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:00007ffc4754f5f8 EFLAGS: 00000246 ORIG_RAX: 000000000000004d
RAX: ffffffffffffffda RBX: 00007effdfde5fa0 RCX: 00007effdfb8f6c9
RDX: 0000000000000000 RSI: 000000000000c17a RDI: 0000000000000004
RBP: 00007effdfc11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007effdfde5fa0 R14: 00007effdfde5fa0 R15: 0000000000000002
 </TASK>