26 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 return bpf_get_prandom_u32() < s->x;14}15 16SEC("cgroup_skb/ingress")17__failure __msg("invalid mem access 'mem_or_null'")18int global_func12(struct __sk_buff *skb)19{20 const struct S s = {.x = skb->len };21 22 foo(&s);23 24 return 1;25}26