loop0: detected capacity change from 0 to 1024
hfsplus: trying to free free bnode 0(1)
hfsplus: b-tree write err: -5, ino 2
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.0.0/5317
Modules linked in:
CPU: 0 UID: 0 PID: 5317 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 94 56 79 fe e9 cf fc ff ff e8 4a 37 17 ff 4c 89 f7 e8 12 5c 03 09 48 c7 c7 e0 aa e7 8b 89 ee e8 74 56 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:ffffc9000e28eee0 EFLAGS: 00010246
RAX: 0000000000000023 RBX: dffffc0000000000 RCX: e27e010dff23bc00
RDX: ffffc9000ec02000 RSI: 0000000000000b5b RDI: 0000000000000b5c
RBP: 0000000000000000 R08: ffffc9000e28ec67 R09: 1ffff92001c51d8c
R10: dffffc0000000000 R11: fffff52001c51d8d R12: 0000000000000000
R13: ffff888042660000 R14: ffff8880426600e0 R15: ffff888033ad4d00
FS:  00007fca8706a6c0(0000) GS:ffff88808ca5b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000563ef1189370 CR3: 000000001cbf8000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 hfsplus_bmap_alloc+0x747/0xb00 fs/hfsplus/btree.c:421
 hfs_btree_inc_height+0x10c/0xb80 fs/hfsplus/brec.c:475
 hfsplus_brec_insert+0x13f/0xd70 fs/hfsplus/brec.c:75
 hfsplus_create_attr_nolock+0x1cb/0x5e0 fs/hfsplus/attributes.c:238
 hfsplus_create_attr+0x213/0x3a0 fs/hfsplus/attributes.c:279
 __hfsplus_setxattr+0x681/0x2610 fs/hfsplus/xattr.c:366
 hfsplus_setxattr+0x124/0x340 fs/hfsplus/xattr.c:461
 hfsplus_trusted_setxattr+0x40/0x60 fs/hfsplus/xattr_trusted.c:30
 __vfs_setxattr+0x43c/0x480 fs/xattr.c:200
 __vfs_setxattr_noperm+0x12d/0x660 fs/xattr.c:234
 vfs_setxattr+0x163/0x360 fs/xattr.c:321
 do_setxattr fs/xattr.c:636 [inline]
 filename_setxattr+0x296/0x630 fs/xattr.c:664
 path_setxattrat+0x3eb/0x440 fs/xattr.c:708
 __do_sys_setxattr fs/xattr.c:742 [inline]
 __se_sys_setxattr fs/xattr.c:738 [inline]
 __x64_sys_setxattr+0xbc/0xe0 fs/xattr.c:738
 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: 0033:0x7fca8619c629
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:00007fca8706a028 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 00007fca86415fa0 RCX: 00007fca8619c629
RDX: 0000200000000840 RSI: 0000200000000800 RDI: 00002000000007c0
RBP: 00007fca86232b39 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000018 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fca86416038 R14: 00007fca86415fa0 R15: 00007ffdb64401b8
 </TASK>