syzbot

loop0: detected capacity change from 0 to 1024
hfsplus: trying to free free bnode 0(1)
hfsplus: new node 0 already hashed?
------------[ cut here ]------------
WARNING: CPU: 1 PID: 4305 at fs/hfsplus/bnode.c:642 hfsplus_bnode_create+0x3d1/0x450 fs/hfsplus/bnode.c:641
Modules linked in:
CPU: 1 PID: 4305 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:hfsplus_bnode_create+0x3d1/0x450 fs/hfsplus/bnode.c:642
Code: 7f 3f 8a 89 ee e8 bf c1 83 07 e9 57 fd ff ff e8 25 62 4b ff 4c 89 ef e8 cd d6 97 07 48 c7 c7 60 7f 3f 8a 89 ee e8 9f c1 83 07 <0f> 0b eb b7 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 63 fc ff ff 4c
RSP: 0018:ffffc9000307f050 EFLAGS: 00010246
RAX: 0000000000000023 RBX: ffff88807ebb0000 RCX: 2c52ddceb24bc400
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff8880b9133d7f R09: 1ffff110172267af
R10: dffffc0000000000 R11: ffffed10172267b0 R12: 0000000000000000
R13: ffff88807ebb00e0 R14: ffff888073098800 R15: dffffc0000000000
FS:  0000555577d9d500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30f63fff CR3: 0000000029ba0000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 hfsplus_bmap_alloc+0x698/0xa70 fs/hfsplus/btree.c:420
 hfs_btree_inc_height+0x109/0xb80 fs/hfsplus/brec.c:475
 hfsplus_brec_insert+0x13b/0xcc0 fs/hfsplus/brec.c:75
 hfsplus_create_attr+0x47c/0x620 fs/hfsplus/attributes.c:252
 __hfsplus_setxattr+0x702/0x1f90 fs/hfsplus/xattr.c:358
 __vfs_setxattr+0x3e0/0x420 fs/xattr.c:182
 __vfs_setxattr_noperm+0x129/0x5e0 fs/xattr.c:216
 vfs_setxattr+0x167/0x2e0 fs/xattr.c:303
 do_setxattr fs/xattr.c:588 [inline]
 setxattr+0x36c/0x390 fs/xattr.c:611
 path_setxattr+0x147/0x290 fs/xattr.c:630
 __do_sys_setxattr fs/xattr.c:646 [inline]
 __se_sys_setxattr fs/xattr.c:642 [inline]
 __x64_sys_setxattr+0xb7/0xd0 fs/xattr.c:642
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fd4a3c49629
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:00007ffffae0d6f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 00007fd4a3ec2fa0 RCX: 00007fd4a3c49629
RDX: 0000000000000000 RSI: 00002000000000c0 RDI: 0000200000000040
RBP: 00007fd4a3cdfb39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd4a3ec2fac R14: 00007fd4a3ec2fa0 R15: 00007fd4a3ec2fa0
 </TASK>