hfs: new node 4 already hashed?
------------[ cut here ]------------
WARNING: CPU: 1 PID: 6033 at fs/hfs/bnode.c:520 hfs_bnode_create+0x37a/0x400 fs/hfs/bnode.c:519
Modules linked in:
CPU: 1 PID: 6033 Comm: syz.2.275 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:hfs_bnode_create+0x37a/0x400 fs/hfs/bnode.c:520
Code: 98 a2 8a 89 ee e8 b6 86 c5 07 e9 ab fd ff ff e8 5c 97 39 ff 48 89 df e8 d4 a9 da 07 48 c7 c7 40 99 a2 8a 89 ee e8 96 86 c5 07 <0f> 0b eb b7 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c b7 fc ff ff 4c
RSP: 0018:ffffc90004c5f7c0 EFLAGS: 00010246
RAX: 000000000000001f RBX: ffff88804d00c0e0 RCX: 5563de56a1aa5300
RDX: ffffc9000cd19000 RSI: 0000000000010c5e RDI: 0000000000010c5f
RBP: 0000000000000004 R08: dffffc0000000000 R09: fffff5200098be99
R10: fffff5200098be99 R11: 1ffff9200098be98 R12: 0000000000000004
R13: ffff88804d00c000 R14: ffff88805c03dd00 R15: dffffc0000000000
FS:  00007f00817676c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f74affcd000 CR3: 000000001d709000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 hfs_bmap_alloc+0x537/0x5c0 fs/hfs/btree.c:291
 hfs_bnode_split+0xc9/0xee0 fs/hfsplus/brec.c:245
 hfs_brec_insert+0x374/0xbc0 fs/hfs/brec.c:102
 hfs_cat_create+0x4e7/0x8d0 fs/hfs/catalog.c:131
 hfs_mkdir+0x68/0xe0 fs/hfs/dir.c:232
 vfs_mkdir+0x387/0x570 fs/namei.c:4114
 do_mkdirat+0x1d0/0x430 fs/namei.c:4139
 __do_sys_mkdirat fs/namei.c:4154 [inline]
 __se_sys_mkdirat fs/namei.c:4152 [inline]
 __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4152
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f008098f749
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:00007f0081767038 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f0080be5fa0 RCX: 00007f008098f749
RDX: 00000000000001c0 RSI: 0000200000000540 RDI: ffffffffffffff9c
RBP: 00007f0080a13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0080be6038 R14: 00007f0080be5fa0 R15: 00007ffd372fa348
 </TASK>