cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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test_map_in_map_invalid.c (552B)

      1// SPDX-License-Identifier: GPL-2.0
      2/* Copyright (c) 2021 Isovalent, Inc. */
      3#include <linux/bpf.h>
      4#include <bpf/bpf_helpers.h>
      5
      6struct inner {
      7	__uint(type, BPF_MAP_TYPE_ARRAY);
      8	__type(key, __u32);
      9	__type(value, int);
     10	__uint(max_entries, 4);
     11};
     12
     13struct {
     14	__uint(type, BPF_MAP_TYPE_ARRAY_OF_MAPS);
     15	__uint(max_entries, 0); /* This will make map creation to fail */
     16	__type(key, __u32);
     17	__array(values, struct inner);
     18} mim SEC(".maps");
     19
     20SEC("xdp")
     21int xdp_noop0(struct xdp_md *ctx)
     22{
     23	return XDP_PASS;
     24}
     25
     26char _license[] SEC("license") = "GPL";