]> Git Repo - J-linux.git/blob - tools/testing/selftests/bpf/progs/bpf_iter_test_kern5.c
Merge tag 'vfs-6.13-rc7.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
[J-linux.git] / tools / testing / selftests / bpf / progs / bpf_iter_test_kern5.c
1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (c) 2020 Facebook */
3 #include <vmlinux.h>
4 #include <bpf/bpf_helpers.h>
5 #include <bpf/bpf_tracing.h>
6
7 char _license[] SEC("license") = "GPL";
8
9 struct key_t {
10         int a;
11         int b;
12         int c;
13 };
14
15 struct {
16         __uint(type, BPF_MAP_TYPE_HASH);
17         __uint(max_entries, 3);
18         __type(key, struct key_t);
19         __type(value, __u64);
20 } hashmap1 SEC(".maps");
21
22 __u32 key_sum = 0;
23
24 SEC("iter/bpf_map_elem")
25 int dump_bpf_hash_map(struct bpf_iter__bpf_map_elem *ctx)
26 {
27         void *key = ctx->key;
28
29         if (key == (void *)0)
30                 return 0;
31
32         /* out of bound access w.r.t. hashmap1 */
33         key_sum += *(__u32 *)(key + sizeof(struct key_t));
34         return 0;
35 }
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