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.0.0/5318
Modules linked in:
CPU: 0 UID: 0 PID: 5318 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 64 bf 78 fe e9 cf fc ff ff e8 ea d2 16 ff 4c 89 f7 e8 c2 72 05 09 48 c7 c7 a0 ba e7 8b 89 ee e8 44 bf 78 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:ffffc9000c85f4e0 EFLAGS: 00010246
RAX: 0000000000000023 RBX: dffffc0000000000 RCX: bd4ac290a5032b00
RDX: ffffc9000efba000 RSI: 000000000000387f RDI: 0000000000003880
RBP: 0000000000000000 R08: ffffc9000c85f267 R09: 1ffff9200190be4c
R10: dffffc0000000000 R11: fffff5200190be4d R12: 0000000000000000
R13: ffff888037dc0000 R14: ffff888037dc00e0 R15: ffff888032869400
FS:  00007f43654796c0(0000) GS:ffff88808ca49000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4358551000 CR3: 000000001fd0c000 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_mknod+0x16a/0x2b0 fs/hfsplus/dir.c:532
 vfs_mknod+0x447/0x610 fs/namei.c:5098
 filename_mknodat+0x3cb/0x660 fs/namei.c:-1
 __do_sys_mknod fs/namei.c:5185 [inline]
 __se_sys_mknod+0x3a/0x150 fs/namei.c:5182
 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: 0033:0x7f436459c819
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:00007f4365478fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000085
RAX: ffffffffffffffda RBX: 00007f4364815fa0 RCX: 00007f436459c819
RDX: 0000000000000700 RSI: 0000000000001000 RDI: 0000200000000380
RBP: 00007f4364632c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4364816038 R14: 00007f4364815fa0 R15: 00007ffeb192a0d8
 </TASK>