// 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; __noinline int foo(const struct S *s) { if (s) return bpf_get_prandom_u32() < *(const int *) s; return 0; } SEC("cgroup_skb/ingress") __failure __msg("reference type('FWD S') size cannot be determined") int global_func14(struct __sk_buff *skb) { return foo(NULL); }