1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
|
// SPDX-License-Identifier: GPL-2.0
#include "vmlinux.h"
#include <bpf/bpf_tracing.h>
#include <bpf/bpf_helpers.h>
#include "bpf_misc.h"
char _license[] SEC("license") = "GPL";
int bpf_sock_destroy(struct sock_common *sk) __ksym;
SEC("tp_btf/tcp_destroy_sock")
__failure __msg("calling kernel function bpf_sock_destroy is not allowed")
int BPF_PROG(trace_tcp_destroy_sock, struct sock *sk)
{
/* should not load */
bpf_sock_destroy((struct sock_common *)sk);
return 0;
}
|
