| 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 |