1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (c) 2022 Meta Platforms, Inc. and affiliates. */
3 
4 #include <vmlinux.h>
5 #include <bpf/bpf_tracing.h>
6 #include <bpf/bpf_helpers.h>
7 #include <bpf/bpf_core_read.h>
8 #include "bpf_experimental.h"
9 
10 /* BTF load should fail as bpf_rb_root __contains this type and points to
11  * 'node', but 'node' is not a bpf_rb_node
12  */
13 struct node_data {
14 	int key;
15 	int data;
16 	struct bpf_list_node node;
17 };
18 
19 static bool less(struct bpf_rb_node *a, const struct bpf_rb_node *b)
20 {
21 	struct node_data *node_a;
22 	struct node_data *node_b;
23 
24 	node_a = container_of(a, struct node_data, node);
25 	node_b = container_of(b, struct node_data, node);
26 
27 	return node_a->key < node_b->key;
28 }
29 
30 #define private(name) SEC(".data." #name) __hidden __attribute__((aligned(8)))
31 private(A) struct bpf_spin_lock glock;
32 private(A) struct bpf_rb_root groot __contains(node_data, node);
33 
34 SEC("tc")
35 long rbtree_api_add__wrong_node_type(void *ctx)
36 {
37 	struct node_data *n;
38 
39 	n = bpf_obj_new(typeof(*n));
40 	if (!n)
41 		return 1;
42 
43 	bpf_spin_lock(&glock);
44 	bpf_rbtree_first(&groot);
45 	bpf_spin_unlock(&glock);
46 	return 0;
47 }
48 
49 char _license[] SEC("license") = "GPL";
50