hfs: new node 4 already hashed?
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1
WARNING: fs/hfs/bnode.c:478 at hfs_bnode_create+0x45a/0x4e0 fs/hfs/bnode.c:478, CPU#0: syz.0.0/5327
Modules linked in:
CPU: 0 UID: 0 PID: 5327 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:hfs_bnode_create+0x45a/0x4e0 fs/hfs/bnode.c:478
Code: 2a 8c 89 ee e8 f7 c7 6b fe e9 d6 fc ff ff e8 fd 06 0c ff 4c 89 ef e8 e5 b6 2f 09 48 c7 c7 c0 14 2a 8c 89 ee e8 d7 c7 6b fe 90 <0f> 0b 90 eb b0 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c dd fb ff ff
RSP: 0018:ffffc9000ddc7448 EFLAGS: 00010246
RAX: 000000000000001f RBX: ffff888040ac8000 RCX: 4dd95c3ab1009c00
RDX: 0000000000000000 RSI: 8000000000000000 RDI: 0000000000000000
RBP: 0000000000000004 R08: ffffc9000ddc71c7 R09: 1ffff92001bb8e38
R10: dffffc0000000000 R11: fffff52001bb8e39 R12: 0000000000000004
R13: ffff888040ac80d8 R14: ffff888033e19a00 R15: dffffc0000000000
FS:  00007f7fef4f26c0(0000) GS:ffff88808c2bc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000c380 CR3: 000000000e906000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 hfs_bnode_split+0xd4/0x1070 fs/hfsplus/brec.c:-1
 hfs_brec_insert+0x3a4/0xc80 fs/hfs/brec.c:102
 hfs_cat_create+0x537/0x870 fs/hfs/catalog.c:131
 hfs_create+0x78/0xe0 fs/hfs/dir.c:196
 lookup_open+0xc0d/0x1a40 fs/namei.c:4567
 open_last_lookups fs/namei.c:4767 [inline]
 path_openat+0x677/0x1d60 fs/namei.c:4997
 do_file_open+0x23e/0x4a0 fs/namei.c:5029
 do_sys_openat2+0x115/0x200 fs/open.c:1417
 do_sys_open fs/open.c:1423 [inline]
 __do_sys_openat fs/open.c:1439 [inline]
 __se_sys_openat fs/open.c:1434 [inline]
 __x64_sys_openat+0x138/0x170 fs/open.c:1434
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7fee59e159
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:00007f7fef4f1fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f7fee826180 RCX: 00007f7fee59e159
RDX: 0000000000020842 RSI: 000020000000c380 RDI: ffffffffffffff9c
RBP: 00007f7fee63506b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7fee826218 R14: 00007f7fee826180 R15: 00007ffc44b05d38
 </TASK>