loop0: detected capacity change from 0 to 1024
hfsplus: new node 0 already hashed?
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5463 at fs/hfsplus/bnode.c:630 hfsplus_bnode_create+0x461/0x4f0 fs/hfsplus/bnode.c:630
Modules linked in:
CPU: 0 UID: 0 PID: 5463 Comm: syz.0.17 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:630
Code: 82 8b 89 ee e8 20 c6 89 fe e9 cf fc ff ff e8 a6 47 22 ff 4c 89 ef e8 6e 2a ad 08 48 c7 c7 80 14 82 8b 89 ee e8 00 c6 89 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:ffffc90002acf500 EFLAGS: 00010246
RAX: 0000000000000023 RBX: ffff8880116da000 RCX: e89896e72be99200
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffc90002acf227 R09: 1ffff92000559e44
R10: dffffc0000000000 R11: fffff52000559e45 R12: 0000000000000000
R13: ffff8880116da0e0 R14: ffff88803309f100 R15: dffffc0000000000
FS:  000055557a632500(0000) GS:ffff88808d730000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f14fab1e090 CR3: 0000000012378000 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
 hfsplus_mkdir+0x2c/0x40 fs/hfsplus/dir.c:529
 vfs_mkdir+0x306/0x510 fs/namei.c:4453
 do_mkdirat+0x247/0x590 fs/namei.c:4486
 __do_sys_mkdirat fs/namei.c:4503 [inline]
 __se_sys_mkdirat fs/namei.c:4501 [inline]
 __x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4501
 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: 0033:0x7f7bf638de17
Code: 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 02 01 00 00 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:00007fffa8da1748 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007fffa8da17d0 RCX: 00007f7bf638de17
RDX: 00000000000001ff RSI: 0000200000000e80 RDI: 00000000ffffff9c
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000000e80
R13: 00007fffa8da1790 R14: 0000000000000000 R15: 0000000000000000
 </TASK>