loop0: detected capacity change from 0 to 1024
hfsplus: new node 0 already hashed?
------------[ cut here ]------------
WARNING: fs/hfsplus/bnode.c:631 at hfsplus_bnode_create+0x461/0x4f0 fs/hfsplus/bnode.c:631, CPU#0: syz.0.0/5344
Modules linked in:
CPU: 0 UID: 0 PID: 5344 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~bpo12+1 04/01/2014
RIP: 0010:hfsplus_bnode_create+0x461/0x4f0 fs/hfsplus/bnode.c:631
Code: 82 8b 89 ee e8 e0 46 87 fe e9 cf fc ff ff e8 46 f9 20 ff 4c 89 ef e8 6e 5b b0 08 48 c7 c7 80 86 82 8b 89 ee e8 c0 46 87 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:ffffc9000d4570e0 EFLAGS: 00010246
RAX: 0000000000000023 RBX: ffff8880356f2000 RCX: 008fa780de458d00
RDX: ffffc90020001000 RSI: 00000000000017e5 RDI: 00000000000017e6
RBP: 0000000000000000 R08: ffffc9000d456e07 R09: 1ffff92001a8adc0
R10: dffffc0000000000 R11: fffff52001a8adc1 R12: 0000000000000000
R13: ffff8880356f20e0 R14: ffff8880362b3500 R15: dffffc0000000000
FS:  00007f3afa63d6c0(0000) GS:ffff88808d68a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000006ac0 CR3: 0000000011fee000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 hfsplus_bmap_alloc+0x71a/0xad0 fs/hfsplus/btree.c:421
 hfs_bnode_split+0xcc/0x1060 fs/hfsplus/brec.c:245
 hfsplus_brec_insert+0x3b6/0xd30 fs/hfsplus/brec.c:100
 hfsplus_create_cat+0xa01/0x1120 fs/hfsplus/catalog.c:308
 hfsplus_mknod+0x16a/0x290 fs/hfsplus/dir.c:494
 lookup_open fs/namei.c:4440 [inline]
 open_last_lookups fs/namei.c:4540 [inline]
 path_openat+0x18bb/0x3dd0 fs/namei.c:4784
 do_filp_open+0x1fa/0x410 fs/namei.c:4814
 do_sys_openat2+0x121/0x200 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+0xfa/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3af978f7c9
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:00007f3afa63d038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f3af99e5fa0 RCX: 00007f3af978f7c9
RDX: 000000000000275a RSI: 0000200000000340 RDI: ffffffffffffff9c
RBP: 00007f3af9813f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3af99e6038 R14: 00007f3af99e5fa0 R15: 00007fffd66b06a8
 </TASK>