1 // SPDX-License-Identifier: GPL-2.0-only 2 #include <stddef.h> 3 #include <linux/bpf.h> 4 #include <bpf/bpf_helpers.h> 5 #include "bpf_misc.h" 6 7 struct S; 8 9 __noinline int foo(const struct S *s) 10 { 11 if (s) 12 return bpf_get_prandom_u32() < *(const int *) s; 13 14 return 0; 15 } 16 17 SEC("cgroup_skb/ingress") 18 __failure __msg("reference type('FWD S') size cannot be determined") 19 int global_func14(struct __sk_buff *skb) 20 { 21 22 return foo(NULL); 23 } 24