24 lines
419 B
C
24 lines
419 B
C
|
// SPDX-License-Identifier: GPL-2.0-only
|
||
|
|
#include <stddef.h>
|
||
|
|
#include <linux/bpf.h>
|
||
|
|
#include <bpf/bpf_helpers.h>
|
||
|
|
#include "bpf_misc.h"
|
||
|
|
|
||
|
|
struct S {
|
||
|
|
int x;
|
||
|
|
};
|
||
|
|
|
||
|
|
__noinline int foo(const struct S *s)
|
||
|
|
{
|
||
|
|
return bpf_get_prandom_u32() < s->x;
|
||
|
|
}
|
||
|
|
|
||
|
|
SEC("cgroup_skb/ingress")
|
||
|
|
__failure __msg("invalid mem access 'mem_or_null'")
|
||
|
|
int global_func12(struct __sk_buff *skb)
|
||
|
|
{
|
||
|
|
const struct S s = {.x = skb->len };
|
||
|
|
|
||
|
|
return foo(&s);
|
||
|
|
}
|