18b08807dSDmitrii Banshchikov // SPDX-License-Identifier: GPL-2.0-only 28b08807dSDmitrii Banshchikov #include <stddef.h> 38b08807dSDmitrii Banshchikov #include <linux/bpf.h> 48b08807dSDmitrii Banshchikov #include <bpf/bpf_helpers.h> 5*95ebb376SAndrii Nakryiko #include "bpf_misc.h" 68b08807dSDmitrii Banshchikov foo(unsigned int * v)78b08807dSDmitrii Banshchikov__noinline int foo(unsigned int *v) 88b08807dSDmitrii Banshchikov { 98b08807dSDmitrii Banshchikov if (v) 108b08807dSDmitrii Banshchikov *v = bpf_get_prandom_u32(); 118b08807dSDmitrii Banshchikov 128b08807dSDmitrii Banshchikov return 0; 138b08807dSDmitrii Banshchikov } 148b08807dSDmitrii Banshchikov 158b08807dSDmitrii Banshchikov SEC("cgroup_skb/ingress") 16*95ebb376SAndrii Nakryiko __failure __msg("At program exit the register R0 has value") global_func15(struct __sk_buff * skb)17*95ebb376SAndrii Nakryikoint global_func15(struct __sk_buff *skb) 188b08807dSDmitrii Banshchikov { 198b08807dSDmitrii Banshchikov unsigned int v = 1; 208b08807dSDmitrii Banshchikov 218b08807dSDmitrii Banshchikov foo(&v); 228b08807dSDmitrii Banshchikov 238b08807dSDmitrii Banshchikov return v; 248b08807dSDmitrii Banshchikov } 25