1 // SPDX-License-Identifier: GPL-2.0
2 // Copyright (c) 2020 Facebook
3
4 #include "vmlinux.h"
5 #include <bpf/bpf_helpers.h>
6 #include <bpf/bpf_tracing.h>
7
8 SEC("freplace/btf_unreliable_kprobe")
9 /* context type is what BPF verifier expects for kprobe context, but target
10 * program has `stuct whatever *ctx` argument, so freplace operation will be
11 * rejected with the following message:
12 *
13 * arg0 replace_btf_unreliable_kprobe(struct pt_regs *) doesn't match btf_unreliable_kprobe(struct whatever *)
14 */
15 int replace_btf_unreliable_kprobe(bpf_user_pt_regs_t *ctx)
16 {
17 return 0;
18 }
19
20 char _license[] SEC("license") = "GPL";
21
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