hfsplus: new node 0 already hashed?
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1
WARNING: fs/hfsplus/bnode.c:631 at hfsplus_bnode_create+0x45d/0x4f0 fs/hfsplus/bnode.c:631, CPU#0: syz.2.45/6196
Modules linked in:
CPU: 0 UID: 0 PID: 6196 Comm: syz.2.45 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:hfsplus_bnode_create+0x45d/0x4f0 fs/hfsplus/bnode.c:631
Code: 46 8b 89 ee e8 64 ca 88 fe e9 cf fc ff ff e8 ba 83 24 ff 4c 89 f7 e8 c2 18 76 08 48 c7 c7 20 e5 46 8b 89 ee e8 44 ca 88 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:ffffc90005be7060 EFLAGS: 00010246
RAX: 0000000000000023 RBX: dffffc0000000000 RCX: 1e7fd8a86361f300
RDX: ffffc9000dfc3000 RSI: 00000000000059af RDI: 00000000000059b0
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff52000b7cdbd R12: 0000000000000000
R13: ffff888038a60000 R14: ffff888038a600d0 R15: ffff88802a68a200
FS:  00007f744e5be6c0(0000) GS:ffff888126595000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fae93c4c000 CR3: 000000003ed3a000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 hfsplus_bmap_alloc+0x747/0xb00 fs/hfsplus/btree.c:421
 hfs_bnode_split+0xd4/0x1090 fs/hfsplus/brec.c:245
 hfsplus_brec_insert+0x3bc/0xd70 fs/hfsplus/brec.c:100
 hfsplus_create_cat+0xa7d/0x11c0 fs/hfsplus/catalog.c:308
 hfsplus_mknod+0x16a/0x2b0 fs/hfsplus/dir.c:532
 lookup_open fs/namei.c:4483 [inline]
 open_last_lookups fs/namei.c:4583 [inline]
 path_openat+0x13b4/0x38a0 fs/namei.c:4827
 do_file_open+0x23e/0x4a0 fs/namei.c:4859
 do_sys_openat2+0x113/0x200 fs/open.c:1366
 do_sys_open fs/open.c:1372 [inline]
 __do_sys_creat fs/open.c:1450 [inline]
 __se_sys_creat fs/open.c:1444 [inline]
 __x64_sys_creat+0x8f/0xc0 fs/open.c:1444
 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: 0033:0x7f745036bf79
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:00007f744e5be028 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 00007f74505e5fa0 RCX: 00007f745036bf79
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000200000000dc0
RBP: 00007f74504027e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f74505e6038 R14: 00007f74505e5fa0 R15: 00007ffcb5ca4a08
 </TASK>