loop0: detected capacity change from 0 to 64
hfs: new node 0 already hashed?
------------[ cut here ]------------
1
WARNING: fs/hfs/bnode.c:520 at hfs_bnode_create.cold+0x41/0x49 fs/hfs/bnode.c:520, CPU#1: syz.0.17/6006
Modules linked in:
CPU: 1 UID: 0 PID: 6006 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
RIP: 0010:hfs_bnode_create.cold+0x41/0x49 fs/hfs/bnode.c:520
Code: b5 d3 50 0a e9 d7 4e ca 01 e8 7b 79 df 00 4c 89 f7 e8 a3 d3 50 0a e8 6e 79 df 00 89 ee 48 c7 c7 a0 11 b1 8b e8 80 e1 fa ff 90 <0f> 0b 90 e9 d9 51 ca 01 e8 52 79 df 00 e8 4d 98 4d 00 e9 35 54 ca
RSP: 0018:ffffc90003d2f838 EFLAGS: 00010282
RAX: 000000000000001f RBX: ffff888030269100 RCX: 0000000000000000
RDX: 000000000000001f RSI: ffffffff81e5b709 RDI: fffff520007a5ef8
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff888031ba2000 R14: ffff888031ba20e0 R15: 0000000000000000
FS:  0000555588982500(0000) GS:ffff8881246dc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000000 CR3: 000000007922d000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 hfs_bmap_alloc+0x5a7/0x6b0 fs/hfs/btree.c:326
 hfs_bnode_split+0xda/0xf30 fs/hfsplus/brec.c:245
 hfs_brec_insert+0x2da/0xc20 fs/hfs/brec.c:102
 hfs_cat_create+0x477/0x980 fs/hfs/catalog.c:118
 hfs_mkdir+0x6f/0xe0 fs/hfs/dir.c:232
 vfs_mkdir+0x729/0xb50 fs/namei.c:5139
 do_mkdirat+0x435/0x590 fs/namei.c:5173
 __do_sys_mkdirat fs/namei.c:5195 [inline]
 __se_sys_mkdirat fs/namei.c:5193 [inline]
 __x64_sys_mkdirat+0x112/0x170 fs/namei.c:5193
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xc9/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff1b819aeb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fffe8a11c28 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007ff1b8415fa0 RCX: 00007ff1b819aeb9
RDX: 0000000000000000 RSI: 0000200000000000 RDI: ffffffffffffff9c
RBP: 00007ff1b8208c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff1b8415fac R14: 00007ff1b8415fa0 R15: 00007ff1b8415fa0
 </TASK>