// SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2020 Facebook */ #include <vmlinux.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; }