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.4.65/6141
Modules linked in:
CPU: 0 UID: 0 PID: 6141 Comm: syz.4.65 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:hfs_bnode_create+0x45a/0x4e0 fs/hfs/bnode.c:478
Code: 89 8b 89 ee e8 a7 e7 79 fe e9 d6 fc ff ff e8 ed 81 18 ff 4c 89 ef e8 25 eb a1 08 48 c7 c7 c0 26 89 8b 89 ee e8 87 e7 79 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:ffffc9000675f828 EFLAGS: 00010246
RAX: 000000000000001f RBX: ffff88803e692000 RCX: 4cd37722bf445700
RDX: ffffc9000e8f2000 RSI: 0000000000000a60 RDI: 0000000000000a61
RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff52000cebeb5 R12: 0000000000000004
R13: ffff88803e6920d0 R14: ffff888029aee000 R15: dffffc0000000000
FS:  00007f7d25d666c0(0000) GS:ffff888125c0d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2ea2f0 CR3: 00000000250f4000 CR4: 00000000003526f0
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_mkdir+0x73/0xe0 fs/hfs/dir.c:226
 vfs_mkdir+0x408/0x620 fs/namei.c:5410
 filename_mkdirat+0x289/0x520 fs/namei.c:5443
 __do_sys_mkdirat fs/namei.c:5464 [inline]
 __se_sys_mkdirat+0x35/0x150 fs/namei.c:5461
 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: 0033:0x7f7d27b0e0d9
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:00007f7d25d66028 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f7d27d95fa0 RCX: 00007f7d27b0e0d9
RDX: 00000000000001ff RSI: 0000200000000200 RDI: ffffffffffffff9c
RBP: 00007f7d27ba5024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7d27d96038 R14: 00007f7d27d95fa0 R15: 00007fffac12f298
 </TASK>