| // SPDX-License-Identifier: GPL-2.0 |
| /* Copyright (c) 2020 Facebook */ |
| #include "bpf_iter.h" |
| #include <bpf/bpf_helpers.h> |
| #include <bpf/bpf_tracing.h> |
| |
| char _license[] SEC("license") = "GPL"; |
| |
| struct key_t { |
| int a; |
| int b; |
| int c; |
| }; |
| |
| struct { |
| __uint(type, BPF_MAP_TYPE_HASH); |
| __uint(max_entries, 3); |
| __type(key, struct key_t); |
| __type(value, __u64); |
| } hashmap1 SEC(".maps"); |
| |
| __u32 key_sum = 0; |
| |
| SEC("iter/bpf_map_elem") |
| int dump_bpf_hash_map(struct bpf_iter__bpf_map_elem *ctx) |
| { |
| void *key = ctx->key; |
| |
| if (key == (void *)0) |
| return 0; |
| |
| /* out of bound access w.r.t. hashmap1 */ |
| key_sum += *(__u32 *)(key + sizeof(struct key_t)); |
| return 0; |
| } |
