The "faulty address" ffffffffffffffc8 corresponds to -0x38.
AFAICT, the instruction
124: 48 8b 43 c8 mov -0x38(%rbx),%rax
correponds to raw_diag.c:
```
sk_nulls_for_each(sk, hnode, hlist) {
struct inet_sock *inet = inet_sk(sk);
>> if (!net_eq(sock_net(sk), net))
continue;
```
hnode == %rbx.
sk == %rbx-0x68
&sk->sk_net == %rbx-0x38
So hnode is nullptr.