loop0: detected capacity change from 0 to 1024
hfsplus: new node 0 already hashed?
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5338 at fs/hfsplus/bnode.c:630 hfsplus_bnode_create+0x461/0x4f0 fs/hfsplus/bnode.c:630
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:hfsplus_bnode_create+0x461/0x4f0 fs/hfsplus/bnode.c:630
Code: 61 8b 89 ee e8 20 85 8b fe e9 cf fc ff ff e8 96 6e 22 ff 4c 89 ef e8 8e b1 a0 08 48 c7 c7 80 fe 61 8b 89 ee e8 00 85 8b 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:ffffc9000f5873a0 EFLAGS: 00010246
RAX: 0000000000000023 RBX: ffff88801e7a0000 RCX: d91d6e119a696500
RDX: ffffc9000dc9a000 RSI: 000000000000d6cb RDI: 000000000000d6cc
RBP: 0000000000000000 R08: ffffc9000f5870c7 R09: 1ffff92001eb0e18
R10: dffffc0000000000 R11: fffff52001eb0e19 R12: 0000000000000000
R13: ffff88801e7a00e0 R14: ffff888035dc7e00 R15: dffffc0000000000
FS:  00007fcc004186c0(0000) GS:ffff88808d96d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000000425ce000 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_link+0x3eb/0x6a0 fs/hfsplus/dir.c:342
 vfs_link+0x4ea/0x6e0 fs/namei.c:4941
 do_linkat+0x272/0x560 fs/namei.c:5011
 __do_sys_link fs/namei.c:5045 [inline]
 __se_sys_link fs/namei.c:5043 [inline]
 __x64_sys_link+0x82/0x90 fs/namei.c:5043
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcbff58eec9
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:00007fcc00418038 EFLAGS: 00000246 ORIG_RAX: 0000000000000056
RAX: ffffffffffffffda RBX: 00007fcbff7e5fa0 RCX: 00007fcbff58eec9
RDX: 0000000000000000 RSI: 0000200000000bc0 RDI: 0000200000001240
RBP: 00007fcbff611f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fcbff7e6038 R14: 00007fcbff7e5fa0 R15: 00007ffda44c6188
 </TASK>