loop0: detected capacity change from 0 to 1024
hfsplus: new node 0 already hashed?
------------[ cut here ]------------
1
WARNING: fs/hfsplus/bnode.c:631 at hfsplus_bnode_create+0x45d/0x4f0 fs/hfsplus/bnode.c:631, CPU#0: syz.0.0/5323
Modules linked in:
CPU: 0 UID: 0 PID: 5323 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:hfsplus_bnode_create+0x45d/0x4f0 fs/hfsplus/bnode.c:631
Code: e7 8b 89 ee e8 b4 70 79 fe e9 cf fc ff ff e8 ca 4d 17 ff 4c 89 f7 e8 32 f6 02 09 48 c7 c7 20 ab e7 8b 89 ee e8 94 70 79 fe 90 <0f> 0b 90 49 c7 c5 ef ff ff ff eb a9 44 89 f9 80 e1 07 80 c1 03 38
RSP: 0018:ffffc9000e0ef380 EFLAGS: 00010246
RAX: 0000000000000023 RBX: dffffc0000000000 RCX: 8ffa59510331ee00
RDX: ffffc9000ec42000 RSI: 0000000000005773 RDI: 0000000000005774
RBP: 0000000000000000 R08: ffffc9000e0ef107 R09: 1ffff92001c1de20
R10: dffffc0000000000 R11: fffff52001c1de21 R12: 0000000000000000
R13: ffff888043414000 R14: ffff8880434140e0 R15: ffff8880447c6500
FS:  00007f89c26bc6c0(0000) GS:ffff88808ca5e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f89c194c700 CR3: 0000000011d48000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 hfsplus_bmap_alloc+0x747/0xb00 fs/hfsplus/btree.c:421
 hfs_bnode_split+0xd4/0x1090 fs/hfsplus/brec.c:245
 hfsplus_brec_insert+0x3bc/0xd70 fs/hfsplus/brec.c:100
 hfsplus_create_cat+0xa65/0x11b0 fs/hfsplus/catalog.c:308
 hfsplus_link+0x414/0x8a0 fs/hfsplus/dir.c:345
 vfs_link+0x518/0x6e0 fs/namei.c:5746
 filename_linkat+0x273/0x600 fs/namei.c:5814
 __do_sys_link fs/namei.c:5847 [inline]
 __se_sys_link+0x55/0x2c0 fs/namei.c:5843
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f89c179c139
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:00007f89c26bc028 EFLAGS: 00000246 ORIG_RAX: 0000000000000056
RAX: ffffffffffffffda RBX: 00007f89c1a15fa0 RCX: 00007f89c179c139
RDX: 0000000000000000 RSI: 0000200000000240 RDI: 0000200000000940
RBP: 00007f89c18327e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f89c1a16038 R14: 00007f89c1a15fa0 R15: 00007fffdee99cc8
 </TASK>