24 lines
407 B
C
24 lines
407 B
C
// SPDX-License-Identifier: GPL-2.0
|
|
/* Copyright (c) 2021 Facebook */
|
|
|
|
#include <linux/bpf.h>
|
|
#include <bpf/bpf_helpers.h>
|
|
|
|
int a[4];
|
|
const volatile int off = 4000;
|
|
|
|
SEC("raw_tp/sys_enter")
|
|
int good_prog(const void *ctx)
|
|
{
|
|
a[0] = (int)(long)ctx;
|
|
return a[1];
|
|
}
|
|
|
|
SEC("raw_tp/sys_enter")
|
|
int bad_prog(const void *ctx)
|
|
{
|
|
/* out of bounds access */
|
|
return a[off];
|
|
}
|
|
|
|
char _license[] SEC("license") = "GPL";
|