hfsplus: new node 0 already hashed?
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1
WARNING: fs/hfsplus/bnode.c:634 at hfsplus_bnode_create+0x45d/0x4f0 fs/hfsplus/bnode.c:634, CPU#1: syz.4.74/6300
Modules linked in:
CPU: 1 UID: 0 PID: 6300 Comm: syz.4.74 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:hfsplus_bnode_create+0x45d/0x4f0 fs/hfsplus/bnode.c:634
Code: 87 8b 89 ee e8 f4 7e 7e fe e9 cf fc ff ff e8 7a f4 1c ff 4c 89 f7 e8 22 ee 9d 08 48 c7 c7 e0 cc 87 8b 89 ee e8 d4 7e 7e 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:ffffc90006b86f80 EFLAGS: 00010246
RAX: 0000000000000023 RBX: dffffc0000000000 RCX: 9adfd348fdf96000
RDX: ffffc9001238d000 RSI: 00000000000015db RDI: 00000000000015dc
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff52000d70da1 R12: 0000000000000000
R13: ffff8880349ac000 R14: ffff8880349ac0d0 R15: ffff88803a645200
FS:  00007f52789246c0(0000) GS:ffff888125d3e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffcf7c64ff0 CR3: 000000002d5ae000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 hfs_btree_inc_height+0xf9/0xb50 fs/hfsplus/brec.c:483
 hfsplus_brec_insert+0x13f/0xde0 fs/hfsplus/brec.c:75
 hfsplus_create_attr_nolock+0x1d5/0x690 fs/hfsplus/attributes.c:250
 hfsplus_create_attr+0x213/0x3a0 fs/hfsplus/attributes.c:292
 __hfsplus_setxattr+0x706/0x2800 fs/hfsplus/xattr.c:453
 hfsplus_initxattrs+0x1ae/0x280 fs/hfsplus/xattr_security.c:59
 security_inode_init_security+0x29b/0x3e0 security/security.c:1370
 hfsplus_mknod+0x1de/0x3c0 fs/hfsplus/dir.c:536
 lookup_open fs/namei.c:4508 [inline]
 open_last_lookups fs/namei.c:4608 [inline]
 path_openat+0x1344/0x3850 fs/namei.c:4860
 do_file_open+0x23e/0x4a0 fs/namei.c:4892
 do_sys_openat2+0x115/0x200 fs/open.c:1368
 do_sys_open fs/open.c:1374 [inline]
 __do_sys_openat fs/open.c:1390 [inline]
 __se_sys_openat fs/open.c:1385 [inline]
 __x64_sys_openat+0x138/0x170 fs/open.c:1385
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f527a70e019
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:00007f5278924028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f527a996180 RCX: 00007f527a70e019
RDX: 0000000000143041 RSI: 0000200000000040 RDI: ffffffffffffff9c
RBP: 00007f527a7a500c R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000002a R11: 0000000000000246 R12: 0000000000000000
R13: 00007f527a996218 R14: 00007f527a996180 R15: 00007ffc7036a888
 </TASK>