loop0: detected capacity change from 0 to 64
hfs: new node 0 already hashed?
------------[ cut here ]------------
WARNING: fs/hfs/bnode.c:520 at hfs_bnode_create+0x461/0x4f0 fs/hfs/bnode.c:520, CPU#0: syz.0.0/5338
Modules linked in:
CPU: 0 UID: 0 PID: 5338 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:hfs_bnode_create+0x461/0x4f0 fs/hfs/bnode.c:520
Code: 82 8b 89 ee e8 a0 16 85 fe e9 cf fc ff ff e8 16 74 1e ff 4c 89 ef e8 2e 95 bb 08 48 c7 c7 80 c7 82 8b 89 ee e8 80 16 85 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:ffffc9000a7a7740 EFLAGS: 00010246
RAX: 000000000000001f RBX: ffff888032d22000 RCX: 593eec96b847d000
RDX: ffffc90020c12000 RSI: 0000000000000a85 RDI: 0000000000000a86
RBP: 0000000000000000 R08: ffffc9000a7a74c7 R09: 1ffff920014f4e98
R10: dffffc0000000000 R11: fffff520014f4e99 R12: 0000000000000000
R13: ffff888032d220e0 R14: ffff888011399900 R15: dffffc0000000000
FS:  00007fe87dd966c0(0000) GS:ffff88808d416000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe87d1d6400 CR3: 0000000032b9c000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 hfs_bmap_alloc+0x5bb/0x640 fs/hfs/btree.c:326
 hfs_bnode_split+0xcc/0x1080 fs/hfsplus/brec.c:245
 hfs_brec_insert+0x39b/0xc80 fs/hfs/brec.c:102
 hfs_cat_create+0x365/0x770 fs/hfs/catalog.c:118
 hfs_mkdir+0x6c/0xe0 fs/hfs/dir.c:232
 vfs_mkdir+0x512/0x5b0 fs/namei.c:5130
 do_mkdirat+0x276/0x4b0 fs/namei.c:5164
 __do_sys_mkdirat fs/namei.c:5186 [inline]
 __se_sys_mkdirat fs/namei.c:5184 [inline]
 __x64_sys_mkdirat+0x87/0xa0 fs/namei.c:5184
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe87cf8f7c9
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:00007fe87dd96038 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007fe87d1e5fa0 RCX: 00007fe87cf8f7c9
RDX: 00000000000001c0 RSI: 00002000000001c0 RDI: ffffffffffffff9c
RBP: 00007fe87d013f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe87d1e6038 R14: 00007fe87d1e5fa0 R15: 00007ffe61f4c768
 </TASK>