hfsplus: new node 0 already hashed?
------------[ cut here ]------------
WARNING: CPU: 0 PID: 6927 at fs/hfsplus/bnode.c:573 hfsplus_bnode_create+0x3b6/0x440 fs/hfsplus/bnode.c:573
Modules linked in:
CPU: 0 UID: 0 PID: 6927 Comm: syz.3.130 Not tainted 6.14.0-rc5-syzkaller-00023-gbb2281fb05e5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:hfsplus_bnode_create+0x3b6/0x440 fs/hfsplus/bnode.c:573
Code: 44 89 e6 e8 ac e3 83 fe e9 78 fd ff ff e8 62 b0 1e ff 4c 89 ff e8 ca 45 60 09 48 c7 c7 80 08 41 8c 44 89 e6 e8 8b e3 83 fe 90 <0f> 0b 90 eb af 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 83 fc ff ff 48
RSP: 0018:ffffc90004efecf8 EFLAGS: 00010246
RAX: 0000000000000023 RBX: ffff888071f06a00 RCX: 4cc963cbadd2cb00
RDX: ffffc9000d63c000 RSI: 000000000002be24 RDI: 000000000002be25
RBP: 0000000000000000 R08: ffffffff81a124cc R09: 1ffff920009dfd3c
R10: dffffc0000000000 R11: fffff520009dfd3d R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88803519c000 R15: ffff88803519c0e0
FS:  00007f4f531f66c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbd40fa6070 CR3: 000000007c46c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 hfsplus_bmap_alloc+0x59a/0x640 fs/hfsplus/btree.c:415
 hfs_btree_inc_height+0x11e/0xdc0 fs/hfsplus/brec.c:475
 hfsplus_brec_insert+0x166/0xde0 fs/hfsplus/brec.c:75
 hfsplus_create_attr+0x341/0x3d0 fs/hfsplus/attributes.c:252
 __hfsplus_setxattr+0x6fe/0x2310 fs/hfsplus/xattr.c:354
 hfsplus_initxattrs+0x1af/0x270 fs/hfsplus/xattr_security.c:59
 security_inode_init_security+0x29c/0x480 security/security.c:1852
 hfsplus_fill_super+0x143a/0x1be0 fs/hfsplus/super.c:568
 get_tree_bdev_flags+0x48c/0x5c0 fs/super.c:1636
 vfs_get_tree+0x90/0x2b0 fs/super.c:1814
 do_new_mount+0x2be/0xb40 fs/namespace.c:3560
 do_mount fs/namespace.c:3900 [inline]
 __do_sys_mount fs/namespace.c:4111 [inline]
 __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4088
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4f5538e90a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007f4f531f5e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f4f531f5ef0 RCX: 00007f4f5538e90a
RDX: 00004000000000c0 RSI: 0000400000000980 RDI: 00007f4f531f5eb0
RBP: 00004000000000c0 R08: 00007f4f531f5ef0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000400000000980
R13: 00007f4f531f5eb0 R14: 00000000000006b6 R15: 0000400000000240
 </TASK>