27 lines · c
1// SPDX-License-Identifier: GPL-2.0-only2#include <stddef.h>3#include <linux/bpf.h>4#include <bpf/bpf_helpers.h>5#include "bpf_misc.h"6 7struct S {8 int x;9};10 11__noinline int foo(const struct S *s)12{13 if (s)14 return bpf_get_prandom_u32() < s->x;15 16 return 0;17}18 19SEC("cgroup_skb/ingress")20__failure __msg("Caller passes invalid args into func#1")21int global_func13(struct __sk_buff *skb)22{23 const struct S *s = (const struct S *)(0xbedabeda);24 25 return foo(s);26}27