1 // SPDX-License-Identifier: GPL-2.0
2 
3 #include <linux/bpf.h>
4 #include <bpf/bpf_helpers.h>
5 
6 #define MAX_STACK_RAWTP 10
7 
8 SEC("raw_tracepoint/sys_enter")
9 int bpf_prog2(void *ctx)
10 {
11 	__u64 stack[MAX_STACK_RAWTP];
12 	int error;
13 
14 	/* set all the flags which should return -EINVAL */
15 	error = bpf_get_stack(ctx, stack, 0, -1);
16 	if (error < 0)
17 		goto loop;
18 
19 	return error;
20 loop:
21 	while (1) {
22 		error++;
23 	}
24 }
25 
26 char _license[] SEC("license") = "GPL";
27