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.0.0/5338
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:hfsplus_bnode_create+0x461/0x4f0 fs/hfsplus/bnode.c:631
Code: a2 8b 89 ee e8 00 c8 85 fe e9 cf fc ff ff e8 46 de 1f ff 4c 89 ef e8 ce 6b be 08 48 c7 c7 00 97 a2 8b 89 ee e8 e0 c7 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:ffffc9000a3774e0 EFLAGS: 00010246
RAX: 0000000000000023 RBX: ffff888033d28000 RCX: cd906d602fde1000
RDX: ffffc90020802000 RSI: 0000000000003ab1 RDI: 0000000000003ab2
RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bfae28 R12: 0000000000000000
R13: ffff888033d280e0 R14: ffff88801f15f200 R15: dffffc0000000000
FS:  00007f65786c46c0(0000) GS:ffff88808d22a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055b07a979a19 CR3: 000000001fc6e000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 hfsplus_bmap_alloc+0x746/0xaf0 fs/hfsplus/btree.c:421
 hfs_bnode_split+0xcc/0x1080 fs/hfsplus/brec.c:245
 hfsplus_brec_insert+0x3b6/0xd70 fs/hfsplus/brec.c:100
 hfsplus_create_cat+0x9a9/0x10d0 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+0x512/0x5b0 fs/namei.c:5130
 do_mkdirat+0x276/0x4b0 fs/namei.c:5164
 __do_sys_mkdir fs/namei.c:5191 [inline]
 __se_sys_mkdir fs/namei.c:5189 [inline]
 __x64_sys_mkdir+0x6c/0x80 fs/namei.c:5189
 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: 0033:0x7f657778f7c9
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:00007f65786c4038 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007f65779e5fa0 RCX: 00007f657778f7c9
RDX: 0000000000000000 RSI: 0000000000000044 RDI: 00002000000003c0
RBP: 00007f6577813f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f65779e6038 R14: 00007f65779e5fa0 R15: 00007ffed9cf7af8
 </TASK>