bpf_stackmap_copy  520 kernel/bpf/stackmap.c int bpf_stackmap_copy(struct bpf_map *map, void *key, void *value)
bpf_stackmap_copy  720 kernel/bpf/syscall.c int __weak bpf_stackmap_copy(struct bpf_map *map, void *key, void *value)