loop0: detected capacity change from 0 to 64
hfs: walked past end of dir
hfs: new node 1 already hashed?
------------[ cut here ]------------
1
WARNING: fs/hfs/bnode.c:520 at hfs_bnode_create+0x461/0x4f0 fs/hfs/bnode.c:520, CPU#0: syz.0.0/5329
Modules linked in:
CPU: 0 UID: 0 PID: 5329 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:hfs_bnode_create+0x461/0x4f0 fs/hfs/bnode.c:520
Code: c7 8b 89 ee e8 80 99 7c fe e9 cf fc ff ff e8 26 6f 19 ff 4c 89 ef e8 de 91 f0 08 48 c7 c7 e0 9e c7 8b 89 ee e8 60 99 7c 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:ffffc9000c7ff340 EFLAGS: 00010246
RAX: 000000000000001f RBX: ffff888040928000 RCX: 9280bd80c502cc00
RDX: ffffc90020802000 RSI: 000000000000099d RDI: 000000000000099e
RBP: 0000000000000001 R08: ffffc9000c7ff0c7 R09: 1ffff920018ffe18
R10: dffffc0000000000 R11: fffff520018ffe19 R12: 0000000000000001
R13: ffff8880409280e0 R14: ffff88801edbf800 R15: dffffc0000000000
FS:  00007f28783236c0(0000) GS:ffff88808ccea000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056365dc98ef0 CR3: 000000003456b000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 hfs_bmap_alloc+0x5c1/0x650 fs/hfs/btree.c:326
 hfs_bnode_split+0xd4/0x1090 fs/hfsplus/brec.c:245
 hfs_brec_insert+0x3a1/0xc90 fs/hfs/brec.c:102
 hfs_cat_create+0x3af/0x800 fs/hfs/catalog.c:118
 hfs_create+0x66/0xe0 fs/hfs/dir.c:202
 lookup_open fs/namei.c:4449 [inline]
 open_last_lookups fs/namei.c:4549 [inline]
 path_openat+0x18dd/0x3e20 fs/namei.c:4793
 do_filp_open+0x22d/0x490 fs/namei.c:4823
 do_sys_openat2+0x12f/0x220 fs/open.c:1430
 do_sys_open fs/open.c:1436 [inline]
 __do_sys_openat fs/open.c:1452 [inline]
 __se_sys_openat fs/open.c:1447 [inline]
 __x64_sys_openat+0x138/0x170 fs/open.c:1447
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f287739aeb9
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:00007f2878323028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f2877615fa0 RCX: 00007f287739aeb9
RDX: 0000000000143042 RSI: 0000200000000040 RDI: ffffffffffffff9c
RBP: 00007f2877408c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2877616038 R14: 00007f2877615fa0 R15: 00007fff533c1bf8
 </TASK>