root/tools/testing/selftests/bpf/progs/test_get_stack_rawtp_err.c
// SPDX-License-Identifier: GPL-2.0

#include <linux/bpf.h>
#include <bpf/bpf_helpers.h>

#define MAX_STACK_RAWTP 10

SEC("raw_tracepoint/sys_enter")
int bpf_prog2(void *ctx)
{
        __u64 stack[MAX_STACK_RAWTP];
        int error;

        /* set all the flags which should return -EINVAL */
        error = bpf_get_stack(ctx, stack, 0, -1);
        if (error < 0)
                goto loop;

        return error;
loop:
        while (1) {
                error++;
        }
}

char _license[] SEC("license") = "GPL";